Radiation-Induced Myelitis: Initial and Follow-Up MRI and Clinical Features in Patients at a Single Tertiary Care Institution during 20 Years [SPINE]
SUMMARY: Myelitis is a rare complication of radiation exposure to the spinal cord and is often a diagnosis of exclusion. A retrospective review of clinical records and serial imaging was performed to identify subjects with documented myelitis and a history of prior radiation. Eleven patients fulfilled the inclusion criteria. All patients had longitudinally extensive cord involvement with homogeneous precontrast T1 hyperintense signal in the adjacent vertebrae, corresponding to the radiation field. T2 signal abnormalities involving the central two-thirds of the cord were seen in 6/11 patients (55%). The degree of cord expan...
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Khan, M., Ambady, P., Kimbrough, D., Shoemaker, T., Terezakis, S., Blakeley, J., Newsome, S. D., Izbudak, I. Tags: SPINE Source Type: research

Clinical Utility of a Novel Ultrafast T2-Weighted Sequence for Spine Imaging [SPINE]
CONCLUSIONS: We present a fast T2-weighted spine protocol using variable refocusing flip angles, including a single-shot variant. The sequences have better point spread function behavior than their constant flip angle counterparts and, being faster, should be less sensitive to patient motion, often seen in the longer TSE scans. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Keerthivasan, M. B., Winegar, B., Becker, J. L., Bilgin, A., Altbach, M. I., Saranathan, M. Tags: SPINE Source Type: research

C1 Posterior Arch Flare Point: A Useful Landmark for Fluoroscopically Guided C1-2 Puncture [SPINE]
CONCLUSIONS: The C1 posterior arch flare point accurately approximates the dorsal spinal cord margin on myelography. Targeting between the flare point and the spinolaminar line, at the mid-C1–2 interspace, allows safe and optimal needle positioning. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Peckham, M. E., Shah, L. M., Tsai, A. C., Quigley, E. P., Cramer, J., Hutchins, T. A. Tags: SPINE Source Type: research

Zonally Magnified Oblique Multislice and Non-Zonally Magnified Oblique Multislice DWI of the Cervical Spinal Cord [SPINE]
BACKGROUND AND PURPOSE: The zonally magnified oblique multislice EPI (ZOOM-EPI) diffusion-weighted sequence has been visually shown to provide superior MR diffusion image quality compared with the full-FOV single-shot EPI sequence (non-ZOOM-EPI) in the adult cervical spinal cord. The purpose of this study was to examine the diffusion tensor imaging indices in the normal human cervical spinal cord between ZOOMED and non-ZOOMED DTI acquisitions and determine whether DTI values are comparable between direct and indirect age-matched groups. MATERIALS AND METHODS: Fifty-four subjects 23–58 years of age (9 direct age-matc...
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Alizadeh, M., Poplawski, M. M., Fisher, J., Gorniak, R. J. T., Dresner, A., Mohamed, F. B., Flanders, A. E. Tags: SPINE Source Type: research

Detection of the Stellate and Thoracic Sympathetic Chain Ganglia with High-Resolution 3D-CISS MR Imaging [SPINE]
CONCLUSIONS: The thoracic sympathetic chain ganglia can be identified on precontrast 3D-CISS MR imaging. This technique may aid in the initial evaluation of stellate ganglion and/or sympathetic chain ganglia size and signal change for comparison in future studies. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Chaudhry, A., Kamali, A., Herzka, D. A., Wang, K. C., Carrino, J. A., Blitz, A. M. Tags: SPINE Source Type: research

The Bone Does Not Predict the Brain in Sturge-Weber Syndrome [PEDIATRICS]
BACKGROUND AND PURPOSE: It has been hypothesized that skull marrow signal alteration may represent an early disease manifestation of Sturge-Weber syndrome before development of its intracranial manifestations. We alternatively hypothesized that intraosseous changes are associated with the overlying port-wine stain rather than the intracranial stigmata of Sturge-Weber syndrome and hence are not a predictor of brain involvement. MATERIALS AND METHODS: MR imaging of children presenting with port-wine stain and/or Sturge-Weber syndrome between 1998 and 2017 was evaluated by 2 pediatric neuroradiologists for marrow signal abno...
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Warne, R. R., Carney, O. M., Wang, G., Bhattacharya, D., Chong, W. K., Aylett, S. E., Mankad, K. Tags: PEDIATRICS Source Type: research

Arterial Spin-Labeling in Children with Brain Tumor: A Meta-Analysis [PEDIATRICS]
BACKGROUND: The value of arterial spin-labeling in a pediatric population has not been assessed in a meta-analysis. PURPOSE: Our aim was to assess the diagnostic accuracy of arterial spin-labeling–derived cerebral blood flow to discriminate low- and high-grade tumors. DATA SOURCES: MEDLINE, EMBASE, the Web of Science Core Collection, and the Cochrane Library were used. STUDY SELECTION: Pediatric patients with arterial spin-labeling MR imaging with verified neuropathologic diagnoses were included. DATA ANALYSIS: Relative CBF and absolute CBF and tumor grade were extracted, including sequence-specific information. ...
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Delgado, A. F., De Luca, F., Hanagandi, P., van Westen, D., Delgado, A. F. Tags: PEDIATRICS Source Type: research

Assessing Corticospinal Tract Asymmetry in Unilateral Polymicrogyria [PEDIATRICS]
CONCLUSIONS: Visual assessment of corticospinal tract asymmetry in unilateral polymicrogyria involving the motor cortex is most reliable with T1WI and color-coded DTI maps at the level of the midbrain. Pronounced asymmetry predicts preserved motor function after hemispherectomy. DTI-based tractography can be used as a guidance tool to the motor cortex within polymicrogyria. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Foesleitner, O., Nenning, K.- H., Traub-Weidinger, T., Feucht, M., Bonelli, S., Czech, T., Dorfer, C., Prayer, D., Kasprian, G. Tags: PEDIATRICS Source Type: research

Thalamocortical Connections and Executive Function in Pediatric Temporal and Frontal Lobe Epilepsy [PEDIATRICS]
CONCLUSIONS: Our results give insight into vulnerable neural networks in pediatric focal epilepsy and suggest thalamocortical pathway damage as a potential mechanism of executive function impairment in temporal lobe epilepsy but not frontal lobe epilepsy. Identifying structure-function relations can help inform how we measure functional and cognitive/behavioral outcomes in these populations. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Law, N., Smith, M. L., Widjaja, E. Tags: PEDIATRICS Source Type: research

Neurodevelopmental Correlates of Fetal Motor Behavior Assessed Using Cine MR Imaging [PEDIATRICS]
CONCLUSIONS: The findings from this study demonstrate that a combined structural and functional imaging approach to the fetus will improve the characterization of early neurologic integrity, with the potential to inform postnatal outcome. This also lays the groundwork for further in vivo research as advanced imaging techniques are developed to study fetal neurologic development. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Hayat, T. T. A., Martinez-Biarge, M., Kyriakopoulou, V., Hajnal, J. V., Rutherford, M. A. Tags: PEDIATRICS Source Type: research

Ultrafast Brain MRI Can Be Used for Indications beyond Shunted Hydrocephalus in Pediatric Patients [PEDIATRICS]
CONCLUSIONS: These results suggest that ultrafast brain MRI is sufficient to evaluate ventriculomegaly, macrocephaly, or intracranial cyst. Ultrafast brain MRI is radiation- and sedation-free; therefore, we recommend its use as the primary screening neuroimaging study for these indications. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Tekes, A., Senglaub, S. S., Ahn, E. S., Huisman, T. A. G. M., Jackson, E. M. Tags: PEDIATRICS Source Type: research

Prognostic Implications of Gadolinium Enhancement of Skull Base Chordomas [HEAD & NECK]
BACKGROUND AND PURPOSE: Skull base chordomas often demonstrate variable MR imaging characteristics, and there has been limited prior research investigating the potential clinical relevance of this variability. The purpose of this retrospective study was to assess the prognostic implications of signal intensity on standard imaging techniques for the biologic behavior of skull base chordomas. MATERIALS AND METHODS: Medical records were retrospectively reviewed for 22 patients with pathologically confirmed skull base chordomas. Clinical data were recorded, including the degree of surgical resection, the presence or absence o...
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Lin, E., Scognamiglio, T., Zhao, Y., Schwartz, T. H., Phillips, C. D. Tags: HEAD & amp; NECK Source Type: research

Reversible Dilation of the Superior Ophthalmic Vein in Intubated Patients [HEAD & NECK]
This study evaluates the incidence of superior ophthalmic vein enlargement in intubated patients without pre-existing intracranial or intraorbital pathologies. MATERIALS AND METHODS: Two cohorts (patients with trauma and epilepsy patients undergoing stereotactic intracranial lead placement) who underwent CT while intubated and shortly following extubation and a cohort of 30 outpatients with a history of headache and normal head CT findings (healthy controls) were included. The superior ophthalmic vein diameter was measured on all scans. RESULTS: Seventy patients intubated for trauma and 45 patients with intraoperative CT...
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Nabavizadeh, S. A., Sundararajan, S. H., Schmitt, J. E., Loevner, L. A. Tags: HEAD & amp; NECK Source Type: research

Application of Reduced-FOV Diffusion-Weighted Imaging in Evaluation of Normal Pituitary Glands and Pituitary Macroadenomas [ADULT BRAIN]
This study evaluated the image quality and value of FOV optimized and constrained undistorted single-shot DWI in the evaluation of normal pituitary glands and pituitary macroadenomas. MATERIALS AND METHODS: Subjects with normal pituitary glands and patients with pituitary macroadenomas underwent FOV optimized and constrained undistorted single-shot and EPI DWI. Two neuroradiologists graded the image quality based on visualization of the pituitary stalk, pituitary gland, and pituitary macroadenoma. Intra- and interobserver agreements were assessed by statistics. Image quality and ADCs were compared between the 2 methods by...
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Wang, M., Liu, H., Wei, X., Liu, C., Liang, T., Zhang, X., Jin, C., Li, X., Sun, Q., Jiang, H., Yang, J. Tags: ADULT BRAIN Source Type: research

Preoperative Mapping of the Supplementary Motor Area in Patients with Brain Tumor Using Resting-State fMRI with Seed-Based Analysis [FUNCTIONAL]
BACKGROUND AND PURPOSE: The supplementary motor area can be a critical region in the preoperative planning of patients undergoing brain tumor resection because it plays a role in both language and motor function. While primary motor regions have been successfully identified using resting-state fMRI, there is variability in the literature regarding the identification of the supplementary motor area for preoperative planning. The purpose of our study was to compare resting-state fMRI to task-based fMRI for localization of the supplementary motor area in a large cohort of patients with brain tumors presenting for preoperative...
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Wongsripuemtet, J., Tyan, A. E., Carass, A., Agarwal, S., Gujar, S. K., Pillai, J. J., Sair, H. I. Tags: FUNCTIONAL Source Type: research

Primary Angioplasty without Stenting for Symptomatic, High-Grade Intracranial Stenosis with Poor Circulation [INTERVENTIONAL]
CONCLUSIONS: In this retrospective series, primary balloon angioplasty was an effective treatment option for symptomatic intracranial stenosis with a high risk of stroke. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Wang, Y., Ma, Y., Gao, P., Chen, Y., Yang, B., Jiao, L. Tags: INTERVENTIONAL Source Type: research

Impact of Focal White Matter Damage on Localized Subcortical Gray Matter Atrophy in Multiple Sclerosis: A 5-Year Study [ADULT BRAIN]
CONCLUSIONS: WM tract disruption accounts for a small percentage of atrophy in connected subcortical gray matter when controlling for overall disease burden and is not the primary driver in most cases. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Fuchs, T. A., Carolus, K., Benedict, R. H. B., Bergsland, N., Ramasamy, D., Jakimovski, D., Weinstock-Guttman, B., Kuceyeski, A., Zivadinov, R., Dwyer, M. G. Tags: ADULT BRAIN Source Type: research

Morphology-Specific Discrimination between MS White Matter Lesions and Benign White Matter Hyperintensities Using Ultra-High-Field MRI [ADULT BRAIN]
CONCLUSIONS: Nonconfluent lesions of>3 mm with ≥1 central vein were the most sensitive and specific differentiators between patients with MS and control subjects. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Hosseini, Z., Matusinec, J., Rudko, D. A., Liu, J., Kwan, B. Y. M., Salehi, F., Sharma, M., Kremenchutzky, M., Menon, R. S., Drangova, M. Tags: ADULT BRAIN Source Type: research

Detection and Characteristics of Temporal Encephaloceles in Patients with Refractory Epilepsy [ADULT BRAIN]
BACKGROUND AND PURPOSE: Temporal encephaloceles are increasingly visualized during neuroimaging assessment of individuals with refractory temporal lobe epilepsy, and their identification could indicate an intracranial abnormality that may be related to a potential seizure focus. Careful review by an experienced neuroradiologist may yield improved detection of TEs, and other clinical, neurophysiologic, and radiologic findings may predict their presence. MATERIALS AND METHODS: Data were reviewed retrospectively in patients at our institution who were presented at a multidisciplinary conference for refractory epilepsy betwee...
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Campbell, Z. M., Hyer, J. M., Lauzon, S., Bonilha, L., Spampinato, M. V., Yazdani, M. Tags: ADULT BRAIN Source Type: research

Comparative Study of MRI Biomarkers in the Substantia Nigra to Discriminate Idiopathic Parkinson Disease [ADULT BRAIN]
CONCLUSIONS: The combination of neuromelanin signal and volume changes with fractional anisotropy measurements in the substantia nigra showed excellent diagnostic accuracy. Moreover, the high diagnostic accuracy of visual assessment of substantia nigra changes using dorsolateral hyperintensity analysis or neuromelanin-sensitive signal changes indicates that these techniques are promising for clinical practice. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Pyatigorskaya, N., Magnin, B., Mongin, M., Yahia-Cherif, L., Valabregue, R., Arnaldi, D., Ewenczyk, C., Poupon, C., Vidailhet, M., Lehericy, S. Tags: ADULT BRAIN Source Type: research

Application of 3D Fast Spin-Echo T1 Black-Blood Imaging in the Diagnosis and Prognostic Prediction of Patients with Leptomeningeal Carcinomatosis [ADULT BRAIN]
BACKGROUND AND PURPOSE: Contrast-enhanced 3D fast spin-echo T1 black-blood imaging selectively suppresses the signal of blood flow and could provide a higher contrast-to-noise ratio compared with contrast-enhanced 3D ultrafast gradient recalled echo (contrast-enhanced gradient recalled echo) and 2D spin-echo T1WI (contrast-enhanced spin-echo). The purpose of our study was to evaluate whether black-blood imaging can improve the diagnostic accuracy for leptomeningeal carcinomatosis compared with contrast-enhanced gradient recalled-echo and contrast-enhanced spin-echo and, furthermore, to determine whether the grade of leptom...
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Oh, J., Choi, S. H., Lee, E., Shin, D. J., Jo, S. W., Yoo, R.- E., Kang, K. M., Yun, T. J., Kim, J.- h., Sohn, C.- H. Tags: ADULT BRAIN Source Type: research

MR Imaging Features of Anaplastic Pleomorphic Xanthoastrocytoma Mimicking High-Grade Astrocytoma [ADULT BRAIN]
CONCLUSIONS: Anaplastic pleomorphic xanthoastrocytomas often have more aggressive MR imaging features mimicking high-grade astrocytomas than pleomorphic xanthoastrocytomas. DWI and DSC-PWI might be useful in the characterization and differentiation of anaplastic pleomorphic xanthoastrocytoma and pleomorphic xanthoastrocytoma. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: She, D., Liu, J., Xing, Z., Zhang, Y., Cao, D., Zhang, Z. Tags: ADULT BRAIN Source Type: research

Clinically Relevant Imaging Features for MGMT Promoter Methylation in Multiple Glioblastoma Studies: A Systematic Review and Meta-Analysis [ADULT BRAIN]
CONCLUSIONS: MGMT promotor methylated glioblastoma is likely to show less aggressive imaging features than MGMT promotor unmethylated glioblastoma. Despite the variety of different MR imaging techniques used, MR imaging in patients with newly diagnosed glioblastoma was shown to have the potential to predict MGMT promoter methylation noninvasively. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Suh, C. H., Kim, H. S., Jung, S. C., Choi, C. G., Kim, S. J. Tags: ADULT BRAIN Source Type: research

Brain Perfusion Measurements Using Multidelay Arterial Spin-Labeling Are Systematically Biased by the Number of Delays [ADULT BRAIN]
CONCLUSIONS: The results of this study support the necessity of standardizing acquisition parameters in multidelay arterial spin-labeling and identifying basic parameters as a confounding factor in CBF quantification studies. Our findings conclude that multidelay arterial spin-labeling sequences with a high number of delays estimate higher CBF values than those with a lower number of delays. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: van der Thiel, M., Rodriguez, C., Giannakopoulos, P., Burke, M. X., Lebel, R. M., Gninenko, N., Van De Ville, D., Haller, S. Tags: ADULT BRAIN Source Type: research

Added Value of Spectroscopy to Perfusion MRI in the Differential Diagnostic Performance of Common Malignant Brain Tumors [ADULT BRAIN]
CONCLUSIONS: Spectroscopy yielded an added performance value to perfusion using optimal combined classifiers of these modalities, significantly increasing the differential diagnostic performances for these common brain tumors. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Vallee, A., Guillevin, C., Wager, M., Delwail, V., Guillevin, R., Vallee, J.- N. Tags: ADULT BRAIN Source Type: research

Clinical Value of Vascular Permeability Estimates Using Dynamic Susceptibility Contrast MRI: Improved Diagnostic Performance in Distinguishing Hypervascular Primary CNS Lymphoma from Glioblastoma [ADULT BRAIN]
BACKGROUND AND PURPOSE: A small subset of primary central nervous system lymphomas exhibits high cerebral blood volume, which is indistinguishable from that in glioblastoma on dynamic susceptibility contrast MR imaging. Our study aimed to test whether estimates of combined perfusion and vascular permeability metrics derived from DSC-MR imaging can improve the diagnostic performance in differentiating hypervascular primary central nervous system lymphoma from glioblastoma. MATERIALS AND METHODS: A total of 119 patients (with 30 primary central nervous system lymphomas and 89 glioblastomas) exhibited hypervascular foci usin...
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Lee, B., Park, J. E., Bjornerud, A., Kim, J. H., Lee, J. Y., Kim, H. S. Tags: ADULT BRAIN Source Type: research

Contextual Radiology Reporting: A New Approach to Neuroradiology Structured Templates [research-article]
SUMMARY: Structured reporting has many advantages over conventional narrative reporting and has been advocated for standard usage by radiologic societies and literature. Traditional structured reports though are often not tailored to the appropriate clinical situation, are generic, and can be overly constraining. Contextual reporting is an alternative method of structured reporting that is specifically related to the disease or examination indication. Herein, we create a library of 50 contextual structured reports for neuroradiologists and emphasize their clinical value over noncontextual structured reporting. These templa...
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Mamlouk, M. D., Chang, P. C., Saket, R. R. Tags: research-article Source Type: research

Noncontrast Head CT in Children: National Variation in Radiation Dose Indices in the United States [PEDIATRICS]
CONCLUSIONS: Considerable variation in the radiation dose index for pediatric head CT exists. Median dose indices and practice variations at pediatric facilities were both lower compared with other practice settings. Decreasing dose variability through proper management of CT parameters in pediatric populations using benchmarks generated by data from registries can potentially decrease population exposure to ionizing radiation. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Sadigh, G., Kadom, N., Karthik, P., Sengupta, D., Strauss, K. J., Frush, D., Applegate, K. E. Tags: PEDIATRICS Source Type: research

Resting-State Functional MRI: Everything That Nonexperts Have Always Wanted to Know [FUNCTIONAL]
SUMMARY: Resting-state fMRI was first described by Biswal et al in 1995 and has since then been widely used in both healthy subjects and patients with various neurologic, neurosurgical, and psychiatric disorders. As opposed to paradigm- or task-based functional MR imaging, resting-state fMRI does not require subjects to perform any specific task. The low-frequency oscillations of the resting-state fMRI signal have been shown to relate to the spontaneous neural activity. There are many ways to analyze resting-state fMRI data. In this review article, we will briefly describe a few of these and highlight the advantages and li...
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Lv, H., Wang, Z., Tong, E., Williams, L. M., Zaharchuk, G., Zeineh, M., Goldstein-Piekarski, A. N., Ball, T. M., Liao, C., Wintermark, M. Tags: FUNCTIONAL Source Type: research

Think A-Head Campaign of Image Gently: Shared Decision-Making in Pediatric Head Trauma [editorial]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Kadom, N., Vey, B. L., Frush, D. P., Broder, J. S., Applegate, K. E., Members of the Image Gently Think A-Head Campaign Committee Tags: editorial Source Type: research

[other]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Gordhan, A. Tags: other Source Type: research

Reply: [LETTERS]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Kuno, H., Sakai, O., Hayashi, R. Tags: LETTERS Source Type: research

Laryngeal Cartilage Invasion [LETTERS]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Ginsberg, L. E. Tags: LETTERS Source Type: research

Reply: [LETTERS]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Jia, Z. Y., Zhao, L. B., Lee, D. H. Tags: LETTERS Source Type: research

Regarding: "Localized Marked Elongation of the Distal Internal Carotid Artery with or without PHACE Syndrome: Segmental Dolichoectasia of the Distal Internal Carotid Artery" [LETTERS]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Brinjikji, W., Lanzino, G. Tags: LETTERS Source Type: research

Rapid-Sequence MRI of the Brain: A Distinct Imaging Study [LETTERS]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Pfeifer, C. M. Tags: LETTERS Source Type: research

Another Important Pitfall in the Diagnosis of Dural Sinus Thrombosis in Neonates [LETTERS]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Hakim, A., Wagner, F. Tags: LETTERS Source Type: research

Medullary Edema and Enhancement with a Straight Upper Border in Cases of Dural Arteriovenous Fistulas [LETTERS]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Byrne, D., Walsh, J. P., Lynch, T., Kavanagh, E. C. Tags: LETTERS Source Type: research

William G. Bradley Jr, MD, PhD, FACR [MEMORIAL]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - August 14, 2018 Category: Radiology Authors: Norbash, A. Tags: MEMORIAL Source Type: research

Celebrating 35 Years of the AJNR: July 1983 edition [other]
(Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - July 9, 2018 Category: Radiology Tags: other Source Type: research

Efficacy and Safety of Percutaneous Microwave Ablation and Cementoplasty in the Treatment of Painful Spinal Metastases and Myeloma [SPINE]
CONCLUSIONS: Microwave ablation is an effective and safe treatment technique for painful spinal metastases. Further studies may be helpful in determining the role of microwave ablation in locoregional control of metastases. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - July 9, 2018 Category: Radiology Authors: Khan, M. A., Deib, G., Deldar, B., Patel, A. M., Barr, J. S. Tags: SPINE Source Type: research

A Qualitative and Quantitative Correlation Study of Lumbar Intervertebral Disc Degeneration Using Glycosaminoglycan Chemical Exchange Saturation Transfer, Pfirrmann Grade, and T1-{rho} [SPINE]
In this study, we aimed to evaluate the usefulness of gagCEST imaging in the quantitative assessment of intervertebral disc degeneration in a comparison with Pfirrmann grade and T1- measurements. MATERIALS AND METHODS: Ninety-six lumbar intervertebral discs in 24 volunteers (36.0 ± 8.5 years of age, 21 men and 3 women) were examined with both gagCEST imaging and T1- measurements. The gagCEST imaging was performed at 3T with a saturation pulse with 1.0-second duration and the B1 amplitude of 0.8 μT followed by imaging by a 2D fast spin-echo sequence. The Z-spectra were obtained at 25 frequency offsets from &ndash...
Source: American Journal of Neuroradiology - July 9, 2018 Category: Radiology Authors: Togao, O., Hiwatashi, A., Wada, T., Yamashita, K., Kikuchi, K., Tokunaga, C., Keupp, J., Yoneyama, M., Honda, H. Tags: SPINE Source Type: research

MRI-Based Methods for Spinal Cord Atrophy Evaluation: A Comparison of Cervical Cord Cross-Sectional Area, Cervical Cord Volume, and Full Spinal Cord Volume in Patients with Aquaporin-4 Antibody Seropositive Neuromyelitis Optica Spectrum Disorders [SPINE]
This study investigated spinal cord atrophy measures in a cohort of healthy subjects and patients with aquaporin-4 antibody seropositive neuromyelitis optica spectrum disorders and evaluated the discriminatory performance of mean upper cervical cord cross-sectional area compared with cervical cord volume and total cord volume. MATERIALS AND METHODS: Mean upper cervical cord area, cervical cord volume, and total cord volume were measured using 3T MRIs from healthy subjects (n = 19) and patients with neuromyelitis optica spectrum disorders (n = 30). Group comparison and receiver operating characteristic analyses between hea...
Source: American Journal of Neuroradiology - July 9, 2018 Category: Radiology Authors: Chien, C., Brandt, A. U., Schmidt, F., Bellmann-Strobl, J., Ruprecht, K., Paul, F., Scheel, M. Tags: SPINE Source Type: research

Balanced Steady-State Free Precession Sequence (CISS/FIESTA/3D Driven Equilibrium Radiofrequency Reset Pulse) Increases the Diagnostic Yield for Spinal Drop Metastases in Children with Brain Tumors [SPINE]
BACKGROUND AND PURPOSE: Identification of spinal drop metastases is important in the staging and management of pediatric patients with primary brain tumors. Our aim was to assess the diagnostic utility of the balanced steady-state free precession (bSSFP) sequence (CISS/FIESTA/3D driven equilibrium radiofrequency reset pulse) for the detection of spinal drop metastases in pediatric patients with primary intracranial tumors. MATERIALS AND METHODS: This was a retrospective study of 44 pediatric patients with primary intracranial tumors undergoing MR imaging spine evaluation for drop metastases before radiation treatment. All...
Source: American Journal of Neuroradiology - July 9, 2018 Category: Radiology Authors: Buch, K., Caruso, P., Ebb, D., Rincon, S. Tags: SPINE Source Type: research

Global and Widespread Local White Matter Abnormalities in Juvenile Neuronal Ceroid Lipofuscinosis [PEDIATRICS]
BACKGROUND AND PURPOSE: Juvenile neuronal ceroid lipofuscinosis is a progressive neurodegenerative lysosomal storage disease of childhood. It manifests with loss of vision, seizures, and loss of cognitive and motor functions leading to premature death. Previous MR imaging studies have reported cerebral and cerebellar atrophy, progressive hippocampal atrophy, thalamic signal intensity alterations, and decreased white matter volume in the corona radiata. However, conventional MR imaging findings are usually normal at younger than 10 years of age. The purpose of our study was to investigate whether diffusion MR imaging could ...
Source: American Journal of Neuroradiology - July 9, 2018 Category: Radiology Authors: Roine, U., Roine, T. J., Hakkarainen, A., Tokola, A., Balk, M. H., Mannerkoski, M., Aberg, L. E., Lönnqvist, T., Autti, T. Tags: PEDIATRICS Source Type: research

Quantitative Assessment of Normal Fetal Brain Myelination Using Fast Macromolecular Proton Fraction Mapping [PEDIATRICS]
BACKGROUND AND PURPOSE: Fast macromolecular proton fraction mapping is a recently emerged MRI method for quantitative myelin imaging. Our aim was to develop a clinically targeted technique for macromolecular proton fraction mapping of the fetal brain and test its capability to characterize normal prenatal myelination. MATERIALS AND METHODS: This prospective study included 41 pregnant women (gestational age range, 18–38 weeks) without abnormal findings on fetal brain MR imaging performed for clinical indications. A fast fetal brain macromolecular proton fraction mapping protocol was implemented on a clinical 1.5T MR ...
Source: American Journal of Neuroradiology - July 9, 2018 Category: Radiology Authors: Yarnykh, V. L., Prihod'ko, I. Y., Savelov, A. A., Korostyshevskaya, A. M. Tags: PEDIATRICS Source Type: research

{beta}-Hydroxybutyrate Detection with Proton MR Spectroscopy in Children with Drug-Resistant Epilepsy on the Ketogenic Diet [PEDIATRICS]
CONCLUSIONS: Clinical MR spectroscopy in pediatric patients on the ketogenic diet demonstrated measurable β-hydroxybutyrate, with a strong correlation to β-hydroxybutyrate blood levels. These findings may serve as an effective tool for noninvasive monitoring of ketosis in this population. An inverse correlation between serum β-hydroxybutyrate levels and brain tissue N-acetylaspartate suggests that altered amino acid handling contributes to the antiepileptogenic effect of the ketogenic diet. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - July 9, 2018 Category: Radiology Authors: Wright, J. N., Saneto, R. P., Friedman, S. D. Tags: PEDIATRICS Source Type: research

Cerebral Perfusion Is Perturbed by Preterm Birth and Brain Injury [PEDIATRICS]
BACKGROUND AND PURPOSE: Early disturbances in systemic and cerebral hemodynamics are thought to mediate prematurity-related brain injury. However, the extent to which CBF is perturbed by preterm birth is unknown. Our aim was to compare global and regional CBF in preterm infants with and without brain injury on conventional MR imaging using arterial spin-labeling during the third trimester of ex utero life and to examine the relationship between clinical risk factors and CBF. MATERIALS AND METHODS: We prospectively enrolled preterm infants younger than 32 weeks' gestational age and
Source: American Journal of Neuroradiology - July 9, 2018 Category: Radiology Authors: Mahdi, E. S., Bouyssi-Kobar, M., Jacobs, M. B., Murnick, J., Chang, T., Limperopoulos, C. Tags: PEDIATRICS Source Type: research

MSVAT-SPACE-STIR and SEMAC-STIR for Reduction of Metallic Artifacts in 3T Head and Neck MRI [HEAD & NECK]
CONCLUSIONS: Regarding susceptibility artifacts and acquisition time, MSVAT-SPACE-STIR might be advantageous over SPACE-STIR for high-resolution and isotropic head and neck imaging. Only for materials with high-susceptibility differences to soft tissue, the use of SEMAC-STIR might be beneficial. Within limited acquisition times, SEMAC-STIR cannot exploit its full advantage over TSE-STIR regarding artifact suppression. (Source: American Journal of Neuroradiology)
Source: American Journal of Neuroradiology - July 9, 2018 Category: Radiology Authors: Hilgenfeld, T., Prager, M., Schwindling, F. S., Nittka, M., Rammelsberg, P., Bendszus, M., Heiland, S., Juerchott, A. Tags: HEAD & amp; NECK Source Type: research

Role of the Apparent Diffusion Coefficient as a Predictor of Tumor Progression in Patients with Chordoma [HEAD & NECK]
This study explores the prognostic role of the apparent diffusion coefficient in chordomas. MATERIALS AND METHODS: Sixteen patients with residual or recurrent chordoma were divided postoperatively into those with an aggressive tumor, defined as a growing tumor having a doubling time of
Source: American Journal of Neuroradiology - July 9, 2018 Category: Radiology Authors: Sasaki, T., Moritani, T., Belay, A., Capizzano, A. A., Sato, S. P., Sato, Y., Kirby, P., Ishitoya, S., Oya, A., Toda, M., Takahashi, K. Tags: HEAD & amp; NECK Source Type: research