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Celebrating 35 Years of the AJNR: January 1983 edition [other]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Tags: other Source Type: research

Imaging Appearances and Pathologic Characteristics of Spinal Epidural Meningioma [SPINE]
CONCLUSIONS: Epidural meningioma has 3 different growth patterns. Dural thickening, calcification, invasion, and epidural mass formation are characteristic features of epidural meningioma. Regular follow-up imaging is required to detect recurrence. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Zhang, L. H., Yuan, H. S. Tags: SPINE Source Type: research

Long-Term Effectiveness of Direct CT-Guided Aspiration and Fenestration of Symptomatic Lumbar Facet Synovial Cysts [SPINE]
CONCLUSIONS: CT-guided direct lumbar facet synovial cyst aspiration and fenestration procedures are safe, effective, and minimally invasive for symptomatic treatment of lumbar synovial facet cysts. This procedure obviates an operation in a substantial number of patients, even at long-term follow-up, and should be considered before surgical intervention. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Shah, V. N., von Fischer, N. D., Chin, C. T., Yuh, E. L., Amans, M. R., Dillon, W. P., Hess, C. P. Tags: SPINE Source Type: research

Spinal Cord Gray Matter Atrophy in Amyotrophic Lateral Sclerosis [SPINE]
This study aimed to quantify cervical spinal gray matter atrophy in amyotrophic lateral sclerosis and investigate its association with clinical disability at baseline and after 1 year. MATERIALS AND METHODS: Twenty-nine patients with amyotrophic lateral sclerosis and 22 healthy controls were scanned with 3T MR imaging. Standard functional scale was recorded at the time of MR imaging and after 1 year. MR imaging data were processed automatically to measure the spinal cord, gray matter, and white matter cross-sectional areas. A statistical analysis assessed the difference in cross-sectional areas between patients with amyot...
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Paquin, M.- E., El Mendili, M. M., Gros, C., Dupont, S. M., Cohen-Adad, J., Pradat, P.- F. Tags: SPINE Source Type: research

Gadolinium DTPA Enhancement Characteristics of the Rat Sciatic Nerve after Crush Injury at 4.7T [SPINE]
This study was performed to determine whether acutely crushed rat sciatic nerves demonstrate Gd-DTPA enhancement and, if so, to evaluate whether enhancement is affected by crush severity. MATERIALS AND METHODS: In 26 rats, the sciatic nerve was crushed with either surgical forceps (6- to 20-N compressive force) or a microvascular/microaneurysm clip (0.1–0.6 N). Animals were longitudinally imaged at 4.7T for up to 30 days after injury. T1WI, T2WI, and T1WI with Gd-DTPA were performed. RESULTS: Forceps crush injury caused robust enhancement between days 3 and 21, while clip crush injury resulted in minimal-to-no enha...
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Hill, B. J., Padgett, K. R., Kalra, V., Marcillo, A., Bowen, B., Pattany, P., Dietrich, D., Quencer, R. Tags: SPINE Source Type: research

MR Imaging of the Superior Cervical Ganglion and Inferior Ganglion of the Vagus Nerve: Structures That Can Mimic Pathologic Retropharyngeal Lymph Nodes [PERIPHERAL NERVOUS SYSTEM]
BACKGROUND AND PURPOSE: The superior cervical ganglion and inferior ganglion of the vagus nerve can mimic pathologic retropharyngeal lymph nodes. We studied the cross-sectional anatomy of the superior cervical ganglion and inferior ganglion of the vagus nerve to evaluate how they can be differentiated from the retropharyngeal lymph nodes. MATERIALS AND METHODS: This retrospective study consists of 2 parts. Cohort 1 concerned the signal intensity of routine neck MR imaging with 2D sequences, apparent diffusion coefficient, and contrast enhancement of the superior cervical ganglion compared with lymph nodes with or without ...
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Yokota, H., Mukai, H., Hattori, S., Yamada, K., Anzai, Y., Uno, T. Tags: PERIPHERAL NERVOUS SYSTEM Source Type: research

Role of MR Neurography for the Diagnosis of Peripheral Trigeminal Nerve Injuries in Patients with Prior Molar Tooth Extraction [PERIPHERAL NERVOUS SYSTEM]
CONCLUSIONS: MR neurography can be reliably used for the diagnosis of injuries to the peripheral trigeminal nerve related to molar tooth extractions, with good to excellent correlation of imaging with clinical findings and surgical results. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Dessouky, R., Xi, Y., Zuniga, J., Chhabra, A. Tags: PERIPHERAL NERVOUS SYSTEM Source Type: research

Patterns of Sonographically Detectable Echogenic Foci in Pediatric Thyroid Carcinoma with Corresponding Histopathology: An Observational Study [HEAD & NECK]
CONCLUSIONS: Sonographically detectable echogenic foci in malignant pediatric thyroid nodules can be reliably classified on the basis of American College of Radiology Thyroid Imaging, Reporting and Data System, with punctate echogenic foci composing the most common subtype. These echogenic foci do not represent psammomatous calcifications most of the time; instead, more than half of the malignant thyroid nodules with echogenic foci contained stromal calcifications or sticky colloid. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Erdem Toslak, I., Martin, B., Barkan, G. A., Kılıc, A. I., Lim-Dunham, J. E. Tags: HEAD & amp; NECK Source Type: research

Effect of an Arm Traction Device on Image Quality and Radiation Exposure during Neck CT: A Prospective Study [HEAD & NECK]
BACKGROUND AND PURPOSE: The image quality of neck CT is frequently disturbed by streak artifact from the shoulder girdles. Our aim was to determine the effects of an arm traction device on image quality and radiation exposure in neck CT. MATERIALS AND METHODS: Patients with lymphoma with complete remission who were scheduled to undergo 2 consecutive follow-up neck CT scans for surveillance within a 1-year interval were enrolled in this prospective study. They underwent 2 consecutive neck CT scans (intervention protocol: patients with an arm traction device; standard protocol: no positioning optimization) on the same CT sy...
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Choi, Y. J., Lee, J. H., Yoon, D. H., Kim, H. J., Seo, K. J., Do, K.- H., Baek, J. H. Tags: HEAD & amp; NECK Source Type: research

Diffusion-Weighted Imaging of the Head and Neck: Influence of Fat-Suppression Technique and Multishot 2D Navigated Interleaved Acquisitions [HEAD & NECK]
BACKGROUND AND PURPOSE: DWI of the head and neck can reveal valuable information, but the effects of fat suppression and multishot acquisition on image quality have not been thoroughly investigated. We aimed to comprehensively compare the quality of head and neck DWI at 3T using 2 fat-suppression techniques, STIR, and spectral presaturation with inversion recovery, which were used with both single- and multishot EPI. MATERIALS AND METHODS: Sixty-five study participants underwent 3 DWI sequences of single-shot EPI–STIR, single-shot EPI–spectral presaturation with inversion recovery, and multishot EPI–spec...
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Bae, Y. J., Choi, B. S., Jeong, H.- K., Sunwoo, L., Jung, C., Kim, J. H. Tags: HEAD & amp; NECK Source Type: research

Dynamic Contrast-Enhanced MRI-Derived Intracellular Water Lifetime ({tau}i): A Prognostic Marker for Patients with Head and Neck Squamous Cell Carcinomas [HEAD & NECK]
BACKGROUND AND PURPOSE: Shutter-speed model analysis of dynamic contrast-enhanced MR imaging allows estimation of mean intracellular water molecule lifetime (a measure of cellular energy metabolism) and volume transfer constant (a measure of hemodynamics). The purpose of this study was to investigate the prognostic utility of pretreatment mean intracellular water molecule lifetime and volume transfer constant in predicting overall survival in patients with squamous cell carcinomas of the head and neck and to stratify p16-positive patients based upon survival outcome. MATERIALS AND METHODS: A cohort of 60 patients underwen...
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Chawla, S., Loevner, L. A., Kim, S. G., Hwang, W.- T., Wang, S., Verma, G., Mohan, S., LiVolsi, V., Quon, H., Poptani, H. Tags: HEAD & amp; NECK Source Type: research

CT Attenuation Analysis of Carotid Intraplaque Hemorrhage [EXTRACRANIAL VASCULAR]
CONCLUSIONS: The results of this preliminary study suggest that CT can be used to identify the presence of intraplaque hemorrhage according to the attenuation. A threshold of 25 HU in the volume acquired after the administration of contrast medium is associated with an optimal sensitivity and specificity. Special care should be given to the correct identification of the ROI. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Saba, L., Francone, M., Bassareo, P. P., Lai, L., Sanfilippo, R., Montisci, R., Suri, J. S., De Cecco, C. N., Faa, G. Tags: EXTRACRANIAL VASCULAR Source Type: research

Lower Arterial Cross-Sectional Area of Carotid and Vertebral Arteries and Higher Frequency of Secondary Neck Vessels Are Associated with Multiple Sclerosis [ADULT BRAIN]
In this study, 193 patients with MS and 193 age- and sex-matched healthy controls underwent 2D TOF venography at 3T. The main arterial (carotid and vertebral), venous (internal jugular), and secondary neck vessels were examined at 4 separate cervical levels (C2/3, C4, C5/6, and C7/T1). The ANCOVA adjusted for age, body mass index, smoking status, hypertension, and heart disease was used to compare the differences between patients with MS and healthy controls. RESULTS: After controlling for all confounding factors, patients with MS had significantly lower cross-sectional areas of the carotid arteries at the C2/3 (P = .03),...
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Belov, P., Jakimovski, D., Krawiecki, J., Magnano, C., Hagemeier, J., Pelizzari, L., Weinstock-Guttman, B., Zivadinov, R. Tags: ADULT BRAIN Source Type: research

Hemodynamic Changes Caused by Multiple Stenting in Vertebral Artery Fusiform Aneurysms: A Patient-Specific Computational Fluid Dynamics Study [INTERVENTIONAL]
CONCLUSIONS: Stent placement modifies hemodynamic patterns in vertebral artery fusiform aneurysms, which might favor thrombosis formation in the aneurysmal sac. This effect is amplified with the number of stents deployed. However, a potential risk of rupture or recanalization exists and should be considered when planning to use the multiple stent placement technique in vertebral artery fusiform aneurysms. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Lv, N., Cao, W., Larrabide, I., Karmonik, C., Zhu, D., Liu, J., Huang, Q., Fang, Y. Tags: INTERVENTIONAL Source Type: research

Two-Center Experience in the Endovascular Treatment of Ruptured and Unruptured Intracranial Aneurysms Using the WEB Device: A Retrospective Analysis [INTERVENTIONAL]
CONCLUSIONS: The WEB device offers a safe and effective treatment option for broad-based intracranial aneurysms without the need for dual antiplatelet therapy. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Popielski, J., Berlis, A., Weber, W., Fischer, S. Tags: INTERVENTIONAL Source Type: research

Posttreatment Infarct Volumes when Compared with 24-Hour and 90-Day Clinical Outcomes: Insights from the REVASCAT Randomized Controlled Trial [INTERVENTIONAL]
BACKGROUND AND PURPOSE: Endovascular therapy has become the standard of care for patients with disabling anterior circulation ischemic stroke due to proximal intracranial thrombi. Our aim was to determine whether the beneficial effect of endovascular treatment on functional outcome could be explained by a reduction in posttreatment infarct volume in the Endovascular Revascularization With Solitaire Device Versus Best Medical Therapy in Anterior Circulation Stroke Within 8 Hours (REVASCAT) trial. MATERIALS AND METHODS: The REVASCAT trial was a multicenter randomized open-label trial with blinded outcome evaluation. Among 2...
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Al-Ajlan, F. S., Al Sultan, A. S., Minhas, P., Assis, Z., de Miquel, M. A., Millan, M., San Roman, L., Tomassello, A., Demchuk, A. M., Jovin, T. G., Cuadras, P., Davalos, A., Goyal, M., Menon, B. K., for the REVASCAT Investigators Tags: INTERVENTIONAL Source Type: research

Time for a Time Window Extension: Insights from Late Presenters in the ESCAPE Trial [INTERVENTIONAL]
CONCLUSIONS: Patients with an extended time window could potentially benefit from endovascular treatment. Ongoing randomized controlled trials using imaging to identify late presenters with favorable brain physiology will help cement the paradigm of using time windows to select the population for acute imaging and imaging to select individual patients for therapy. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Evans, J. W., Graham, B. R., Pordeli, P., Al-Ajlan, F. S., Willinsky, R., Montanera, W. J., Rempel, J. L., Shuaib, A., Brennan, P., Williams, D., Roy, D., Poppe, A. Y., Jovin, T. G., Devlin, T., Baxter, B. W., Krings, T., Silver, F. L., Frei, D. F., Fanal Tags: INTERVENTIONAL Source Type: research

Association of Developmental Venous Anomalies with Demyelinating Lesions in Patients with Multiple Sclerosis [ADULT BRAIN]
We present 5 cases of demyelination in patients diagnosed with multiple sclerosis that are closely associated with a developmental venous anomaly. Although the presence of a central vein is a known phenomenon with multiple sclerosis plaques, demyelination occurring around developmental venous anomalies is an underreported phenomenon. Tumefactive demyelination can cause a diagnostic dilemma because of its overlapping imaging findings with central nervous system neoplasm. The relationship of a tumefactive plaque with a central vein can be diagnostically useful, and we suggest that if such a lesion is closely associated with ...
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Rogers, D. M., Peckham, M. E., Shah, L. M., Wiggins, R. H. Tags: ADULT BRAIN Source Type: research

Spatial Correlation of Pathology and Perfusion Changes within the Cortex and White Matter in Multiple Sclerosis [ADULT BRAIN]
BACKGROUND AND PURPOSE: The spatial correlation between WM and cortical GM disease in multiple sclerosis is controversial and has not been previously assessed with perfusion MR imaging. We sought to determine the nature of association between lobar WM, cortical GM, volume and perfusion. MATERIALS AND METHODS: Nineteen individuals with secondary-progressive multiple sclerosis, 19 with relapsing-remitting multiple sclerosis, and 19 age-matched healthy controls were recruited. Quantitative MR perfusion imaging was used to derive CBF, CBV, and MTT within cortical GM, WM, and T2-hyperintense lesions. A 2-step multivariate line...
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Mulholland, A. D., Vitorino, R., Hojjat, S.- P., Ma, A. Y., Zhang, L., Lee, L., Carroll, T. J., Cantrell, C. G., Figley, C. R., Aviv, R. I. Tags: ADULT BRAIN Source Type: research

Can Arterial Spin-Labeling with Multiple Postlabeling Delays Predict Cerebrovascular Reserve? [ADULT BRAIN]
BACKGROUND AND PURPOSE: The effect of delayed transit time is the main source of error in the quantitative measurement of CBF in arterial spin-labeling. In the present study, we evaluated the usefulness of the transit time–corrected CBF and arterial transit time delay from multiple postlabeling delays arterial spin-labeling compared with basal/acetazolamide stress technetium Tc99m-hexamethylpropylene amineoxime (Tc99m-HMPAO) SPECT in predicting impairment in the cerebrovascular reserve. MATERIALS AND METHODS: Transit time–corrected CBF maps and arterial transit time maps were acquired in 30 consecutive patient...
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Choi, H. J., Sohn, C.- H., You, S.- H., Yoo, R.- E., Kang, K. M., Yun, T. J., Choi, S. H., Kim, J.- H., Cho, W.- S., Kim, J. E. Tags: ADULT BRAIN Source Type: research

Do Fluid-Attenuated Inversion Recovery Vascular Hyperintensities Represent Good Collaterals before Reperfusion Therapy? [ADULT BRAIN]
CONCLUSIONS: In patients eligible for reperfusion therapy, FLAIR vascular hyperintensity extent was associated with good collaterals, as assessed by the pretreatment hypoperfusion intensity ratio. The ASPECTS assessment of FLAIR vascular hyperintensities could be used to rapidly identify patients more likely to benefit from reperfusion therapy. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Mahdjoub, E., Turc, G., Legrand, L., Benzakoun, J., Edjlali, M., Seners, P., Charron, S., Ben Hassen, W., Naggara, O., Meder, J.- F., Mas, J.- L., Baron, J.- C., Oppenheim, C. Tags: ADULT BRAIN Source Type: research

Perivascular Spaces in Old Age: Assessment, Distribution, and Correlation with White Matter Hyperintensities [ADULT BRAIN]
BACKGROUND AND PURPOSE: The visual rating scales for perivascular spaces vary considerably. We sought to develop a new scale for visual assessment of perivascular spaces and to further describe their distribution and association with white matter hyperintensities in old age. MATERIALS AND METHODS: This population-based study included 530 individuals who did not have dementia and were not institutionalized (age, ≥60 years or older; mean age, 70.7 years; 58.9% women) who were living in central Stockholm, Sweden. A semiquantitative visual rating scale was developed to score the number and size of visible perivascular spac...
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Laveskog, A., Wang, R., Bronge, L., Wahlund, L.- O., Qiu, C. Tags: ADULT BRAIN Source Type: research

Semiautomated Evaluation of the Primary Motor Cortex in Patients with Amyotrophic Lateral Sclerosis at 3T [ADULT BRAIN]
BACKGROUND AND PURPOSE: Amyotrophic lateral sclerosis is a neurodegenerative disease involving the upper and lower motor neurons. In amyotrophic lateral sclerosis, pathologic changes in the primary motor cortex include Betz cell depletion and the presence of reactive iron-loaded microglia, detectable on 7T MR images as atrophy and T2*-hypointensity. Our purposes were the following: 1) to investigate the signal hypointensity-to-thickness ratio of the primary motor cortex as a radiologic marker of upper motor neuron involvement in amyotrophic lateral sclerosis with a semiautomated method at 3T, 2) to compare 3T and 7T result...
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Donatelli, G., Retico, A., Caldarazzo Ienco, E., Cecchi, P., Costagli, M., Frosini, D., Biagi, L., Tosetti, M., Siciliano, G., Cosottini, M. Tags: ADULT BRAIN Source Type: research

Brain Structural Changes following HIV Infection: Meta-Analysis [ADULT BRAIN]
CONCLUSIONS: While published studies of HIV effects on brain structure had substantial variations that are likely to result from changes in HIV treatment practice during the study period, quantitative neurostructural measures can reliably detect the effects of HIV infection during treatment, serving as reliable biomarkers. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: O'Connor, E. E., Zeffiro, T. A., Zeffiro, T. A. Tags: ADULT BRAIN Source Type: research

Reproducibility of Deep Gray Matter Atrophy Rate Measurement in a Large Multicenter Dataset [ADULT BRAIN]
BACKGROUND AND PURPOSE: Precise in vivo measurement of deep GM volume change is a highly demanded prerequisite for an adequate evaluation of disease progression and new treatments. However, quantitative data on the reproducibility of deep GM structure volumetry are not yet available. In this paper we aim to investigate this reproducibility using a large multicenter dataset. MATERIALS AND METHODS: We have assessed the reproducibility of 2 automated segmentation software packages (FreeSurfer and the FMRIB Integrated Registration and Segmentation Tool) by quantifying the volume changes of deep GM structures by using back-to-...
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Meijerman, A., Amiri, H., Steenwijk, M. D., Jonker, M. A., van Schijndel, R. A., Cover, K. S., Vrenken, H., for the Alzheimer's Disease Neuroimaging Initiative Tags: ADULT BRAIN Source Type: research

Improved Spatiotemporal Resolution of Dynamic Susceptibility Contrast Perfusion MRI in Brain Tumors Using Simultaneous Multi-Slice Echo-Planar Imaging [ADULT BRAIN]
SUMMARY: DSC perfusion MR imaging in brain tumors requires a trade-off between spatial and temporal resolution, resulting in less spatial coverage to meet the temporal resolution requirements for accurate relative CBV estimation. DSC-MR imaging could potentially benefit from the advantages associated with simultaneous multi-slice imaging, including increased spatiotemporal resolution. In the current article, we demonstrate how simultaneous multi-slice EPI can be used to improve DSC-MR imaging spatiotemporal resolution in patients with glioblastoma. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Chakhoyan, A., Leu, K., Pope, W. B., Cloughesy, T. F., Ellingson, B. M. Tags: ADULT BRAIN Source Type: research

Prediction of IDH1-Mutation and 1p/19q-Codeletion Status Using Preoperative MR Imaging Phenotypes in Lower Grade Gliomas [ADULT BRAIN]
CONCLUSIONS: Preoperative MR imaging phenotypes are different according to the molecular markers of lower grade gliomas, and they may be helpful in predicting the IDH1-mutation status. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Park, Y. W., Han, K., Ahn, S. S., Bae, S., Choi, Y. S., Chang, J. H., Kim, S. H., Kang, S.- G., Lee, S.- K. Tags: ADULT BRAIN Source Type: research

MR Elastography Analysis of Glioma Stiffness and IDH1-Mutation Status [ADULT BRAIN]
BACKGROUND AND PURPOSE: Our aim was to noninvasively evaluate gliomas with MR elastography to characterize the relationship of tumor stiffness with tumor grade and mutations in the isocitrate dehydrogenase 1 (IDH1) gene. MATERIALS AND METHODS: Tumor stiffness properties were prospectively quantified in 18 patients (mean age, 42 years; 6 women) with histologically proved gliomas using MR elastography from 2014 to 2016. Images were acquired on a 3T MR imaging unit with a vibration frequency of 60 Hz. Tumor stiffness was compared with unaffected contralateral white matter, across tumor grade, and by IDH1-mutation status. The...
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Pepin, K. M., McGee, K. P., Arani, A., Lake, D. S., Glaser, K. J., Manduca, A., Parney, I. F., Ehman, R. L., Huston, J. Tags: ADULT BRAIN Source Type: research

Deep Brain Nuclei T1 Shortening after Gadobenate Dimeglumine in Children: Influence of Radiation and Chemotherapy [PATIENT SAFETY]
BACKGROUND AND PURPOSE: Intrinsic T1-hyperintense signal has recently been reported in the deep gray nuclei on brain MR imaging after multiple doses of gadolinium-based contrast agents. Most reports have included adult patients and excluded those undergoing radiation or chemotherapy. We investigated whether T1 shortening is also observed in children and tried to determine whether radiochemotherapy is a risk factor for this phenomenon. MATERIALS AND METHODS: In this single-center retrospective study, we reviewed clinical charts and images of all patients 18 years of age or younger with ≥4 gadobenate dimeglumine–en...
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Kinner, S., Schubert, T. B., Bruce, R. J., Rebsamen, S. L., Diamond, C. A., Reeder, S. B., Rowley, H. A. Tags: PATIENT SAFETY Source Type: research

Influences for Gender Disparity in Academic Neuroradiology [research-article]
CONCLUSIONS: Neuroradiology faculty members follow the same male predominance seen in many other specialties of medicine. In this study, issues such as mentoring, role models, opportunities to engage in leadership/research activities, funding opportunities, and mindfulness regarding research productivity are explored. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Ahmadi, M., Khurshid, K., Sanelli, P. C., Jalal, S., Chahal, T., Norbash, A., Nicolaou, S., Castillo, M., Khosa, F. Tags: research-article Source Type: research

Health Care Economics: A Study Guide for Neuroradiology Fellows, Part 2 [review-article]
SUMMARY: In this second article, we continue the review of current health care economics as it relates to radiologists, specifically framed by topics defined by the Accreditation Council for Graduate Medical Education in the evaluation of neuroradiology fellows. The discussion in this article is focused on topics pertaining to levels 4 and 5, which are the more advanced levels of competency defined by the Accreditation Council for Graduate Medical Education Neuroradiology Milestones on Health Care Economics and System Based Practice. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Weiner, S. L., Tu, R., Javan, R., Taheri, M. R. Tags: review-article Source Type: research

Erratum [ERRATA]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Tags: ERRATA Source Type: research

Reply: [LETTERS]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Thakur, S. K., Serulle, Y., Miskin, N. P., Rusinek, H., Golomb, J., George, A. E. Tags: LETTERS Source Type: research

Does the Volume of CSF Removed Affect the Response to a Tap in Normal Pressure Hydrocephalus? [LETTERS]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Onder, H., Hanalioglu, S. Tags: LETTERS Source Type: research

Heinz First to Routinely Catheterize Carotid and Vertebral Arteries in America [LETTERS]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Heinz, E. R. Tags: LETTERS Source Type: research

Health Care Economics: A Study Guide for Neuroradiology Fellows, Part 1 [review-article]
SUMMARY: Few resources are available in the medical literature for a comprehensive review of current health care economics as it relates to radiologists, specifically framed by topics defined by the Accreditation Council for Graduate Medical Education in the evaluation of neuroradiology fellows. Therefore, we present a comprehensive review article as a study guide for fellows to learn from and gain competence in the Accreditation Council for Graduate Medical Education neuroradiology milestones on health care economics. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Weiner, S. L., Tu, R., Javan, R., Taheri, M. R. Tags: review-article Source Type: research

Bipolar Radiofrequency Ablation of Spinal Tumors: The Effect of the Posterior Vertebral Cortex Defect on Temperature Distribution in the Spinal Canal [LETTERS]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Zhang, C., Han, X., Douglas, P., Dai, Y., Wang, G. Tags: LETTERS Source Type: research

[other]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - January 11, 2018 Category: Radiology Authors: Peker, T. Tags: other Source Type: research

Advantages of 70-kV CT Angiography for the Visualization of the Adamkiewicz Artery: Comparison with 120-kV Imaging [SPINE]
This study aimed to compare 70-kV CTA with conventional 120-kV CTA for the identification of the Adamkiewicz artery, examining differences in radiation dose and image quality. MATERIALS AND METHODS: We retrospectively analyzed 2 equal groups of 60 patients who had undergone 70-kV or 120-kV CTA to detect the Adamkiewicz artery before aortic repair. Size-specific dose estimate, the CT number of the aorta, and the contrast-to-noise ratio of the anterior spinal artery to the spinal cord were recorded. Furthermore, detectability of the Adamkiewicz artery was evaluated by using a 4-point continuity score (3, definite to 0, unde...
Source: American Journal of Neuroradiology - December 15, 2017 Category: Radiology Authors: Shimoyama, S., Nishii, T., Watanabe, Y., Kono, A. K., Kagawa, K., Takahashi, S., Sugimura, K. Tags: SPINE Source Type: research

Predictive Models in Differentiating Vertebral Lesions Using Multiparametric MRI [SPINE]
CONCLUSIONS: Our study shows that multiparametric MRI differentiates various vertebral lesions, and we established prediction models for the same. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - December 15, 2017 Category: Radiology Authors: Rathore, R., Parihar, A., Dwivedi, D. K., Dwivedi, A. K., Kohli, N., Garg, R. K., Chandra, A. Tags: SPINE Source Type: research

Anterior Mesencephalic Cap Dysplasia: Novel Brain Stem Malformative Features Associated with Joubert Syndrome [PEDIATRICS]
SUMMARY: In Joubert syndrome, the "molar tooth" sign can be associated with several additional supra- and infratentorial malformations. Here we report on 3 subjects (2 siblings, 8–14 years of age) with Joubert syndrome, showing an abnormal thick bulging of the anterior profile of the mesencephalon causing a complete obliteration of the interpeduncular fossa. DTI revealed that the abnormal tissue consisted of an ectopic white matter tract with a laterolateral transverse orientation. Tractographic reconstructions support the hypothesis of impaired axonal guidance mechanisms responsible for the malformation. T...
Source: American Journal of Neuroradiology - December 15, 2017 Category: Radiology Authors: Arrigoni, F., Romaniello, R., Peruzzo, D., De Luca, A., Parazzini, C., Valente, E. M., Borgatti, R., Triulzi, F. Tags: PEDIATRICS Source Type: research

Basion-Cartilaginous Dens Interval: An Imaging Parameter for Craniovertebral Junction Assessment in Children [PEDIATRICS]
CONCLUSIONS: The basion–cartilaginous dens interval is a novel imaging parameter to assess cranioverterbral junction integrity in children, which includes the nonossified cartilage in the measurement. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - December 15, 2017 Category: Radiology Authors: Singh, A. K., Fulton, Z., Tiwari, R., Zhang, X., Lu, L., Altmeyer, W. B., Tantiwongkosi, B. Tags: PEDIATRICS Source Type: research

Gestational Age at Birth and Brain White Matter Development in Term-Born Infants and Children [PEDIATRICS]
BACKGROUND AND PURPOSE: Studies on infants and children born preterm have shown that adequate gestational length is critical for brain white matter development. Less is known regarding how variations in gestational age at birth in term infants and children affect white matter development, which was evaluated in this study. MATERIALS AND METHODS: Using DTI tract-based spatial statistics methods, we evaluated white matter microstructures in 2 groups of term-born (≥37 weeks of gestation) healthy subjects: 2-week-old infants (n = 44) and 8-year-old children (n = 63). DTI parameters including fractional anisotropy, mean dif...
Source: American Journal of Neuroradiology - December 15, 2017 Category: Radiology Authors: Ou, X., Glasier, C. M., Ramakrishnaiah, R. H., Kanfi, A., Rowell, A. C., Pivik, R. T., Andres, A., Cleves, M. A., Badger, T. M. Tags: PEDIATRICS Source Type: research

Quantitative Synthetic MRI in Children: Normative Intracranial Tissue Segmentation Values during Development [PEDIATRICS]
CONCLUSIONS: A pediatric data base of normal intracranial tissue volumes using a single sequence and rapid software analysis has been compiled and correlates with previously published data. This provides a framework for clinical interpretation of quantitative synthetic MR images during development. Improved age-based segmentation algorithms in young children are needed. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - December 15, 2017 Category: Radiology Authors: McAllister, A., Leach, J., West, H., Jones, B., Zhang, B., Serai, S. Tags: PEDIATRICS Source Type: research

Head and Neck MRI Findings in CHARGE Syndrome [HEAD & NECK]
SUMMARY: Coloboma of the eye, Heart defects, Atresia of the choanae, Retardation of growth and/or development, Genital and/or urinary abnormalities, and Ear abnormalities and deafness (CHARGE) syndrome is a disorder with multiple congenital anomalies seen on imaging. A retrospective review of 10 patients with CHARGE syndrome who underwent MR imaging of the brain as part of a preoperative evaluation for cochlear implantation was conducted. Structural abnormalities of the entire MR imaging of the head were evaluated, including the auditory system, olfactory system, face, skull base, and central nervous system. The most frequ...
Source: American Journal of Neuroradiology - December 15, 2017 Category: Radiology Authors: Hoch, M. J., Patel, S. H., Jethanamest, D., Win, W., Fatterpekar, G. M., Roland, J. T., Hagiwara, M. Tags: HEAD & amp; NECK Source Type: research

Efficacy and Safety of Ethanol Ablation for Branchial Cleft Cysts [INTERVENTIONAL]
This study evaluated the efficacy and safety of ethanol ablation as an alternative treatment to surgery for branchial cleft cyst. MATERIALS AND METHODS: Between September 2006 and October 2016, ethanol ablation was performed in 22 patients who refused an operation for a second branchial cleft cyst. After the exclusion of 2 patients who were lost to follow-up, the data of 20 patients were retrospectively evaluated. All index masses were confirmed as benign before treatment. Sonography-guided aspiration of the cystic fluid was followed by injection of absolute ethanol (99%) into the lesion. The injected volume of ethanol wa...
Source: American Journal of Neuroradiology - December 15, 2017 Category: Radiology Authors: Ha, E. J., Baek, S. M., Baek, J. H., Shin, S. Y., Han, M., Kim, C.- H. Tags: INTERVENTIONAL Source Type: research

Optimization of Quantitative Dynamic Postgadolinium MRI Technique Using Normalized Ratios for the Evaluation of Temporomandibular Joint Synovitis in Patients with Juvenile Idiopathic Arthritis [HEAD & NECK]
CONCLUSIONS: We provide a robust, reproducible, dynamic gadolinium-enhanced MR imaging technique for the quantitative assessment of temporomandibular joint synovitis in patients with juvenile idiopathic arthritis. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - December 15, 2017 Category: Radiology Authors: Caruso, P., Buch, K., Rincon, S., Hakimelahi, R., Peacock, Z. S., Resnick, C. M., Foster, C., Guidoboni, L., Donahue, T., Macdonald, R., Rothermel, H., Curtin, H. D., Kaban, L. B. Tags: HEAD & amp; NECK Source Type: research

CT Texture Analysis: Defining and Integrating New Biomarkers for Advanced Oncologic Imaging in Precision Medicine: A Comment on "CT Texture Analysis Potentially Predicts Local Failure in Head and Neck Squamous Cell Carcinoma Treated with Chemoradiotherapy" [article-commentary]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - December 15, 2017 Category: Radiology Authors: Becker, M. Tags: article-commentary Source Type: research

CT Texture Analysis Potentially Predicts Local Failure in Head and Neck Squamous Cell Carcinoma Treated with Chemoradiotherapy [HEAD & NECK]
CONCLUSIONS: Independent primary tumor CT texture analysis parameters are associated with local failure in patients with head and neck squamous cell carcinoma treated with chemoradiotherapy. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - December 15, 2017 Category: Radiology Authors: Kuno, H., Qureshi, M. M., Chapman, M. N., Li, B., Andreu-Arasa, V. C., Onoue, K., Truong, M. T., Sakai, O. Tags: HEAD & amp; NECK Source Type: research

Preoperative Cerebral Oxygen Extraction Fraction Imaging Generated from 7T MR Quantitative Susceptibility Mapping Predicts Development of Cerebral Hyperperfusion following Carotid Endarterectomy [ADULT BRAIN]
CONCLUSIONS: Preoperative oxygen extraction fraction imaging generated from 7T MR quantitative susceptibility mapping identifies patients at risk for cerebral hyperperfusion following carotid endarterectomy. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - December 15, 2017 Category: Radiology Authors: Nomura, J.- i., Uwano, I., Sasaki, M., Kudo, K., Yamashita, F., Ito, K., Fujiwara, S., Kobayashi, M., Ogasawara, K. Tags: ADULT BRAIN Source Type: research