Intra-arterial interleukin-12 gene delivery combined with chemoembolization: anti-tumor effect in a rabbit hepatocellular carcinoma (HCC) model.
Abstract BackgroundInterleukin-12 (IL-12), a cytokine naturally secreted by activated dendritic cells and monocytes/macrophages, is known as a key anti-tumor agent in many tumor models, including hepatocellular carcinoma (HCC) models.PurposeTo evaluate the anti-tumor effect of intra-arterial IL-12 gene delivery alone and in combination with transcatheter arterial chemoembolization (TACE) in rabbit VX2 liver cancer model.Material and MethodsRabbits with VX2 liver tumors were randomized into four groups, eight in each group. After laparotomy and insertion of a 30-gauge needle into the proper hepatic artery, the foll...
Source: Acta Radiologica - March 18, 2013 Category: Radiology Authors: Xia X, Li X, Feng G, Zheng C, Liang H, Zhou G Tags: Acta Radiol Source Type: research

Right bronchopleural fistula treated with a novel, Y-shaped, single-plugged, covered, metallic airway stent.
ConclusionThe placement of Y-shaped, single-plugged, covered, self-expandable metallic airway stents seems to be a feasible and safe method for the treatment of bronchopleural fistulas involving the right main bronchus. This stent is a promising therapeutic alternative for bronchopleural fistulas involving the right main bronchus. PMID: 23507935 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - March 18, 2013 Category: Radiology Authors: Wu G, Li ZM, Han XW, Wang ZG, Lu HB, Zhu M, Ren KW Tags: Acta Radiol Source Type: research

Hybrid SPECT/CT imaging of sentinel nodes in esophageal cancer: first results.
n R Abstract BackgroundSentinel node (SN) biopsy in esophageal cancer has the potential of becoming an important tool for ruling out the presence of lymph node metastases in patients opted for less extensive surgery without neoadjuvant treatment.PurposeTo investigate preoperative SN imaging in esophageal cancer using hybrid single photon emission computed tomography (SPECT)/CT.Material and MethodsEight patients with esophageal cancer scheduled for thoracoabdominal esophagectomy after neoadjuvant treatment, underwent endoscopic submucosal injection of (99m)Tc-nanocoll the day before surgery, followed by imaging wit...
Source: Acta Radiologica - March 18, 2013 Category: Radiology Authors: Tsai JA, Celebioglu F, Lindblad M, Lörinc E, Nilsson M, Olsson A, Lundell L, Axelsson R Tags: Acta Radiol Source Type: research

Hypertrophic olivary degeneration after surgical resection of brain tumors.
ConclusionHOD can be caused after neurosurgical intervention of brain tumors involving the Guillain-Mollaret triangle. It is important for radiologists to distinguish HOD from tumor recurrence. PMID: 23486559 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - March 13, 2013 Category: Radiology Authors: Shinohara Y, Kinoshita T, Kinoshita F, Kaminou T, Watanabe T, Ogawa T Tags: Acta Radiol Source Type: research

Relationship between the use of new or used computed tomography scanners and image retake rates in South Korea.
ConclusionThe quality control associated with import of used CT scanners should be improved. Moreover, regular and detailed quality inspections of used CT scanners currently operating in healthcare institutions are necessary. PMID: 23486560 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - March 13, 2013 Category: Radiology Authors: Hong JS, Kang HC Tags: Acta Radiol Source Type: research

An imaging protocol for dynamic contrast-enhanced breast MRI with 3.0T: using sagittal sequence interleaved between axial sequences.
Abstract BackgroundB1 transmission-field inhomogeneity has been reported at 3.0 Tesla (T) breast imaging. Enhancement measurements of breast cancers at 3.0T may be insufficient for some patients and improvements in imaging protocols are needed.PurposeTo quantify B1 inhomogeneities in normal tissue and malignant masses at 3.0T breast MR imaging and to evaluate effect of an imaging protocol using an interleaved sagittal sequence in dynamic contrast-enhanced MRI (DCE-MRI).Material and MethodsA total of 76 patients were included who underwent DCE-MRI of the breast at 3.0T with an imaging protocol consisting of 1st, 2n...
Source: Acta Radiologica - March 13, 2013 Category: Radiology Authors: Park JE, Lee JE, Hwang JY, Cha ES Tags: Acta Radiol Source Type: research

Accuracy of four-dimensional phase-contrast velocity mapping for blood flow visualizations: a phantom study.
ConclusionPathline visualizations can be significantly affected by background phase errors, highlighting the importance of dedicated and robust phase correction methods. Our results show that pathline deviation can be substantial if adequate phase background errors are not minimized. PMID: 23486562 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - March 13, 2013 Category: Radiology Authors: Nilsson A, Bloch KM, Töger J, Heiberg E, Ståhlberg F Tags: Acta Radiol Source Type: research

Incidence of delayed and missed diagnoses in whole-body multidetector CT in patients with multiple injuries after trauma.
ConclusionIn multiple traumas, only a few missed injuries in initial WBCT reading are clinically relevant. However, as the vast majority of these injuries are detectable, the radiologist has to be alert for commonly missed findings to avoid a delayed diagnosis. PMID: 23481653 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - March 12, 2013 Category: Radiology Authors: Geyer LL, Körner M, Linsenmaier U, Huber-Wagner S, Kanz KG, Reiser MF, Wirth S Tags: Acta Radiol Source Type: research

Brain volumetry in Parkinson's disease with and without dementia: where are the differences?
Abstract BackgroundCognitive dysfunction is well documented in Parkinson's disease (PD). However, association between regional brain volume change and cognitive decline of PD is uncertain.PurposeTo compare regional brain volume difference between PD without dementia (PDND) and PD with dementia (PDD).Material and MethodsWe enrolled 16 normal controls (mean ± SD: 69.5 ± 6.31) and 32 sex-, age-matched patients with PD (16 PDND and 16 PDD patients with Hoehn & Yahr stage II or III). Cognitive function was assessed using mini-mental status examination (MMSE). Intracranial volume (ICV) and the hippocam...
Source: Acta Radiologica - March 10, 2013 Category: Radiology Authors: Lee SH, Kim SS, Tae WS, Lee SY, Lee KU, Jhoo J Tags: Acta Radiol Source Type: research

Volumetric evaluation of dual-energy perfusion CT by the presence of intrapulmonary clots using a 64-slice dual-source CT.
This study was approved by the local ethics committee.ResultsPA pressure and D-dimer were significantly higher in the patients who had IPCs. In the patients with IPCs, V15, V10, V5, %V15, %V10, and %V5 were also significantly higher than those without IPC (P ≤ 0.001). %V5 had a better correlation with D-dimer (r = 0.30, P
Source: Acta Radiologica - March 10, 2013 Category: Radiology Authors: Okada M, Nakashima Y, Kunihiro Y, Nakao S, Morikage N, Sano Y, Suga K, Matsunaga N Tags: Acta Radiol Source Type: research

Improvement of SNR and acquisition acceleration using a 32-channel head coil compared to a 12-channel head coil at 3T.
ConclusionThe 32-channel head coil provided superior SNR both with and without PAT compared with a 12-channel head coil, especially close to the brain surface. Using PAT, the unavoidable noise enhancement is diminished up to acceleration factors of 6 for the 32-channel head coil. Therefore, the 32-channel head coil is considered as a preferable tool for high-resolution neuroradiological imaging. PMID: 23474767 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - March 10, 2013 Category: Radiology Authors: Reiss-Zimmermann M, Gutberlet M, Köstler H, Fritzsch D, Hoffmann KT Tags: Acta Radiol Source Type: research

Patient dose and image quality in low-dose abdominal CT: a comparison between iterative reconstruction and filtered back projection.
Abstract BackgroundIn computed tomography (CT), there is increasing concern for potential CT radiation hazards. Several raw-data-based iterative reconstruction techniques attempt to facilitate low-dose imaging without compromising image quality, which raises the question whether these techniques may allow further dose reduction.PurposeTo compare image quality of iterative reconstruction and filtered back projection in low-dose abdominal CT and study the potential for further dose reduction.Material and MethodsForty-five patients underwent CT of the abdomen twice: with standard low-dose technique and with 30% reduc...
Source: Acta Radiologica - March 10, 2013 Category: Radiology Authors: Kataria B, Smedby O Tags: Acta Radiol Source Type: research

Animal experimental evaluation of a new sealing device for indwelling arterial catheters.
ConclusionOur preliminary in-vivo results demonstrate a safe and convenient vascular sealing system for endovascular catheters. No acute or chronic complications were observed. PMID: 23474769 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - March 10, 2013 Category: Radiology Authors: Isfort P, Urban U, Mahnken AH, Penzkofer T, Bruners P, Pfeffer J, Steinseifer U, Günther RW, Schmitz-Rode T Tags: Acta Radiol Source Type: research

Anisotropic phantom measurements for quality assured use of diffusion tensor imaging in clinical practice.
ConclusionPhantom QA is necessary before using DTI for novel procedures to identify the uncertainties associated with DTI data. It is important to remember that the results are software-dependent and that representation of the tracts may vary between software products. We therefore recommend caution with regard to the application of fiber tracking results intraoperatively when dealing with abnormal fiber tract anatomy. PMID: 23474770 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - March 10, 2013 Category: Radiology Authors: Berberat J, Eberle B, Rogers S, Boxheimer L, Lutters G, Merlo A, Bodis S, Remonda L Tags: Acta Radiol Source Type: research

Concomitant findings and clinical significance of a fluid crescent between the iliacus muscle and iliac bone on MRI.
Abstract BackgroundSome routine magnetic resonance imaging (MRI) examinations show a thin line of fluid signal intensity along the iliac crest ("fluid crescent") between the iliacus muscle and the iliac bone. This fluid crescent has not been described before.PurposeTo evaluate the clinical context and significance of the fluid crescent.Material and MethodsMRI examinations of the abdomen and pelvis performed over 1 year were retrospectively reviewed twice for the presence of a fluid crescent. The relationship between the presence of a fluid crescent and associated abnormal findings, including ascites, ili...
Source: Acta Radiologica - March 10, 2013 Category: Radiology Authors: Eshed I, Liberman B, Inbar Y, Amitai M, Portnoy O, Hertz M, Apter S Tags: Acta Radiol Source Type: research

An implementation of time-efficient respiratory-gated PET acquisition by repeated breath-holds.
ConclusionThe instruction to perform repeated breath-holds was well understood by patients and they cooperated satisfactorily. When the new procedure is used the duration of the data acquisition may typically be reduced by a factor of 4 compared to conventional respiratory-gated protocols where the patient breathes freely. PMID: 23463858 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - March 5, 2013 Category: Radiology Authors: Skretting A, Revheim ME, Knudtsen IS, Johnsrud K, Bogsrud TV Tags: Acta Radiol Source Type: research

Clinical and radiological features of invasive Klebsiella pneumoniae liver abscess syndrome.
ConclusionIKPLAS has significantly worse prognosis than non-metastatic KP abscess patients. In patients with KP liver abscess, liver abscess ≤5.8 cm can be used as an independent predictor of IKPLAS and altered mentality as a very specific feature in diagnosing IKPLAS. PMID: 23463859 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - March 5, 2013 Category: Radiology Authors: Shin SU, Park CM, Lee Y, Kim EC, Kim SJ, Goo JM Tags: Acta Radiol Source Type: research

Treatment of postoperative main portal vein and superior mesenteric vein thrombosis with balloon angioplasty and/or stent placement.
ConclusionBalloon angioplasty and/or stent placement without thrombolysis or thrombectomy may be a safe and effective treatment modality for postoperative main portal vein and superior mesenteric vein thrombosis. PMID: 23463860 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - March 5, 2013 Category: Radiology Authors: Cao G, Ko GY, Sung KB, Yoon HK, Gwon D, Kim JH Tags: Acta Radiol Source Type: research

MRI findings with arthroscopic correlation for tear of discoid lateral meniscus: comparison between children and adults.
ConclusionComplex tears were more commonly found in adults than children and peripheral tears were more commonly found in children than adults. MRI has a high PPV for diagnosing the type of tear in discoid lateral meniscus for horizontal tears in children and adults and for complex tears in adults. PMID: 23463861 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - March 5, 2013 Category: Radiology Authors: Jung JY, Choi SH, Ahn JH, Lee SA Tags: Acta Radiol Source Type: research

Cross-camera comparison of ROI-based semi-quantitative 123I-IBZM SPECT data in healthy volunteers using an anthropomorphic phantom for calibration.
ConclusionThe conformity of uptake ratios in attenuation corrected (123)I-IBZM images derived from the two different cameras was improved by using an anthropomorphic phantom for calibration. PMID: 23463862 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - March 5, 2013 Category: Radiology Authors: Mo SJ, Larsson A, Johansson L, Stenlund H, Forsgren L, Riklund K Tags: Acta Radiol Source Type: research

Value of true whole-body FDG-PET/CT scanning protocol in oncology: optimization of its use based on primary diagnosis.
ConclusionWB FOV detects additional sites of disease compared to the limited WB FOV, and although these lesions rarely change stage, some of these lesions may change clinical management. PMID: 23463863 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - March 5, 2013 Category: Radiology Authors: Sebro R, Mari-Aparici C, Hernandez-Pampaloni M Tags: Acta Radiol Source Type: research

Coronary artery abnormalities in Kawasaki disease: comparison between CT and MR coronary angiography.
Abstract BACKGROUND: Although CT coronary angiography (CTCA) and MR coronary angiography (MRCA) are increasingly used in patients with Kawasaki disease, comparison of coronary artery assessibility and diagnostic performance between the two imaging modalities has been rarely performed. PURPOSE: To investigate which imaging modality, CTCA or MRCA, is better for evaluating coronary artery abnormalities in patients with Kawasaki disease. MATERIAL AND METHODS: Between 2003 and 2011, 56 patients (38 boys/men; age range, 1-24 years) with Kawasaki disease underwent CTCA or MRCA (group A). Of these, 17 underwent ...
Source: Acta Radiologica - March 1, 2013 Category: Radiology Authors: Kim JW, Goo HW Tags: Acta Radiol Source Type: research

Ultrasound-guided percutaneous laser and ethanol ablation of rabbit VX2 liver tumors.
CONCLUSION: Combined therapy of PEI immediately followed by PLA can coagulate significantly larger volumes of tumor and reduce residual tumor. PMID: 23482351 [PubMed - indexed for MEDLINE] (Source: Acta Radiologica)
Source: Acta Radiologica - March 1, 2013 Category: Radiology Authors: Zou X, Liu Q, Zhou X, He G, Yu M, Han Z, Meng X, Su H Tags: Acta Radiol Source Type: research

Percutaneous radiofrequency ablation of renal cell carcinomas in patients with von Hippel Lindau disease: indications, techniques, complications, and outcomes.
Abstract Renal cell carcinoma (RCC) in patients with von Hippel Lindau (VHL) disease tends to be multifocal, bilateral, and recur or develop new tumors after removal. These characteristics make treating hereditary RCCs difficult for urologists or radiologists compared to treating a sporadic RCC. Radiofrequency ablation (RFA) is a minimally-invasive treatment for small hereditary RCCs associated with a low complication rate and a minimal decrease in renal function.No RFA guidelines have been established about what to treat and when and how to ablate RCCs in patients with VHL disease. Besides, reports on complicatio...
Source: Acta Radiologica - February 27, 2013 Category: Radiology Authors: Park BK, Kim CK, Park SY, Shen SH Tags: Acta Radiol Source Type: research

Damage to pig bile duct caused by intraluminal brachytherapy using a 125I ribbon.
ConclusionThis study demonstrated the safety of ILBT using a 125I ribbon in the pig bile duct. 125I seed ribbons may be used in the treatment of MOJ in humans. PMID: 23446746 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - February 27, 2013 Category: Radiology Authors: Chen Y, Wang XL, Yan ZP, Wang JH, Cheng JM, Gong GQ, Li GP Tags: Acta Radiol Source Type: research

Enhancement characteristics of retroperitoneal lymphomatous lymph nodes.
ConclusionThe comparison of enhancement curves of retroperitoneal LLN with retroperitoneal control nodes showed a marked similarity with and substantiates our previous findings in lymph nodes of the neck and of the mediastinum. The best diagnostic accuracy was achieved by combining the parameters peak contrast value and time to peak and adjusting these values to the body weight. Peak enhancement of the retroperitoneal LLN was higher and arrived earlier than that of the mediastinal nodes from the previous investigation. PMID: 23446747 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - February 27, 2013 Category: Radiology Authors: Hagtvedt T, Aaløkken TM, Smith HJ, Graff BA, Holte H, Kolbenstvedt A Tags: Acta Radiol Source Type: research

The multislice CT findings of renal carcinoma associated with XP11.2 translocation/TFE gene fusion and collecting duct carcinoma.
Abstract BackgroundRenal cell carcinoma associated with Xp11.2 translocation and TFE gene fusion (Xp11.2/TFE RCC), and collecting duct carcinoma (CDC) are uncommon subtypes of renal cell carcinomas.PurposeTo investigate the multislice CT (MSCT) characteristics of these two tumor types.Material and MethodsNine patients with Xp11.2/TFE RCC and 10 patients with CDC were studied retrospectively. MSCT was undertaken to investigate differences in tumor characteristics and enhancement patterns.ResultsAll patients had single tumors centered in the renal medulla. Two patients with each tumor type had lymph node involvement...
Source: Acta Radiologica - February 27, 2013 Category: Radiology Authors: Zhu QQ, Wang ZQ, Zhu WR, Chen WX, Wu JT Tags: Acta Radiol Source Type: research

Changes in renal Doppler ultrasonographic parameters in patients managed with rigid ureteroscopy.
foglu I Abstract BackgroundThere has been no study evaluating the intrarenal hemodynamic changes after ureteroscopy in the published literature.PurposeTo determine preoperative and postoperative intrarenal vascular parameters such as resistive index (RI), pulsatility index (PI), peak systolic velocity (PSV), end-diastolic velocity (EDV), measure changes on these values (ΔRI, ΔPI, ΔPSV, ΔEDV) after ureteroscopy (URS) and compare the outcomes with the results of normal contralateral kidneys, and finally investigate possible parameters that would affect renal vascular resistance changes.Materi...
Source: Acta Radiologica - February 27, 2013 Category: Radiology Authors: Tokgöz O, Tokgöz H, Unal I, Voyvoda N, Serifoglu I Tags: Acta Radiol Source Type: research

MDCT coronary angiography - postprocessing, reading, and reporting: last but not least.
Abstract Significant literature on MDCT coronary angiography (MDCT-CA) has emerged in the last decade concerning patient's selection, technical aspects of different generations of CT equipment, ECG gating, contrast material and beta-blockade administration, acquisition parameters, and radiation dose. However, the literature regarding postprocessing, reading, and reporting is not so extensive. This review highlights the main elements of MDCT-CA data analysis, thereby allowing the radiologist to take full advantage of this technology and enable a structured report to be generated, promoting best practice with high-q...
Source: Acta Radiologica - February 27, 2013 Category: Radiology Authors: Marano R, Savino G, Merlino B, Verrillo G, Silvestri V, Tricarico F, Meduri A, Natale L, Bonomo L Tags: Acta Radiol Source Type: research

Pediatric computed tomography imaging guideline.
Abstract The use of computed tomography (CT) in pediatric diagnostic imaging is demanding generally, but when coupled with an awareness to limit the radiation dose associated with this imaging modality, the procedure becomes challenging. Although new techniques have been developed in line with the introduction of faster multidetector computed tomography (MDCT) scanners to aid radiation reduction, it still remains the responsibility of the clinical practitioner to ensure each examination request is justified and the scanning protocol and parameters selected are optimized to the individual patient's requirement. It ...
Source: Acta Radiologica - February 23, 2013 Category: Radiology Authors: Young C, Owens CM Tags: Acta Radiol Source Type: research

Application value of 3T 1H-magnetic resonance spectroscopy in diagnosing breast tumors.
ConclusionThe combined use of (1)H-MRS and DCE-MRI found to have improved diagnostic performance in the assessment of equivocal breast lesions. (1)H-MRS can be used as a useful adjunct during lesion characterization in clinical routine in cases classified as BI-RADS 3 and 4. PMID: 23436823 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - February 23, 2013 Category: Radiology Authors: Vassiou K, Tsougos I, Kousi E, Vlychou M, Athanasiou E, Theodorou K, Arvanitis DL, Fezoulidis IV Tags: Acta Radiol Source Type: research

Congenital lung malformations: radiological findings and clues for differential diagnosis.
cute;quez G Abstract Congenital lung malformations encompass a wide spectrum of conditions with a broadly varying clinical presentation. They are often a source of morbidity in infants and children. Their management depends on the type of malformation and its clinical presentation. Usually, the diagnosis requires an imaging evaluation. Classifications of bronchopulmonary malformations have undergone significant revision in recent years and several theories have attempted to explain their confusing pathogenesis. There are considerable degrees of overlapping and hybrid conditions are common, with interrelated malfor...
Source: Acta Radiologica - February 23, 2013 Category: Radiology Authors: Garcia-Peña P, Coma A, Enríquez G Tags: Acta Radiol Source Type: research

Conventional MRI findings for predicting submandibular pleomorphic adenoma.
ConclusionAlthough non-specific, submandibular pleomorphic adenomas usually have hyperintense areas on T2-weighted images and well-defined margins. In addition, crescent-shaped compression of the ipsilateral normal gland seems to represent a highly specific sign. PMID: 23436825 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - February 23, 2013 Category: Radiology Authors: Kashiwagi N, Murakami T, Nakanishi K, Maenishi O, Okajima K, Takahashi H, Sakai M, Tomita Y, Terao K, Tomiyama N Tags: Acta Radiol Source Type: research

Evaluation of the growth pattern of carcinoma of colon and rectum by MDCT.
ConclusionThe tumor growth doubling time of colorectal cancer has a very broad aspect. The initial wall thickness of the tumor on MDCT appears to be the most powerful parameter showing correlation with the volume growth rate. PMID: 23436826 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - February 23, 2013 Category: Radiology Authors: Choi SJ, Kim HS, Ahn SJ, Jeong YM, Choi HY Tags: Acta Radiol Source Type: research

Evaluation of contrast-enhanced MR angiography in the follow-up of visceral arterial aneurysms after coil embolization.
ConclusionCE-MRA at 3T provides high-quality images equivalent to DSA for the evaluation of VAAs after coil embolization. We suggest that CE-MRA at 3T might be used as the primary method for follow-up of VAAs after coil embolization. PMID: 23436827 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - February 23, 2013 Category: Radiology Authors: Iryo Y, Ikushima I, Hirai T, Yonenaga K, Yamashita Y Tags: Acta Radiol Source Type: research

X-ray dose delivered during a longitudinal micro-CT study has no adverse effect on cardiac and pulmonary tissue in C57BL/6 mice.
ConclusionThis study demonstrated that a 5 Gy X-ray dose accumulated over 6 weeks during a longitudinal micro-CT study had no significant effects on the pulmonary and myocardial tissue of C57BL/6 mice. As a result, the many advantages of micro-CT imaging, including rapid acquisition of high-resolution, isotropic images in free-breathing mice, can be taken advantage of in longitudinal studies without concern for negative dose-related effects. PMID: 23436828 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - February 23, 2013 Category: Radiology Authors: Detombe SA, Dunmore-Buyze J, Petrov IE, Drangova M Tags: Acta Radiol Source Type: research

Lumbar pain with intracranial origin.
Abstract A 48-year-old woman presented low-back pain radiating to the lower right leg. Magnetic resonance imaging (MRI) of the lumbar spine revealed a L4-L5 subacute subdural hematoma (SDH). The patient had no general or local cause for this lumbar SDH, such as coagulation disorder, trauma, surgery, or lumbar puncture. She had a history of post-traumatic bilateral hemorrhagic contusions of the brain and intracranial SDH because of a fall occurring several months before the current problems. A downward migration of the cerebral SDH was found as only potential explanation of the lumbar SDH. The association between t...
Source: Acta Radiologica - February 23, 2013 Category: Radiology Authors: Perlepe V, Haenecour L, Duprez T, Omoumi P, Vande Berg BC, Lecouvet FE Tags: Acta Radiol Source Type: research

Intra- and inter-observer repeatability of radiographic measurements for previously slipped capital femoral epiphysis at skeletal maturity.
ConclusionCommon radiographic measurements for the assessment of a previously slipped capital femoral epiphysis are relatively inaccurate in skeletal mature adolescents, in particular between observers (inter-observer), but also for the same observer (intra-observer). Our results underscore the importance of thorough standardization for both image and measurement technique when used in a clinical setting. PMID: 23436830 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - February 23, 2013 Category: Radiology Authors: Lehmann TG, Vetti N, Laborie LB, Engesæter IO, Engesæter LB, Rosendahl K Tags: Acta Radiol Source Type: research

MRI for occult physeal fracture detection in children and adolescents.
ConclusionThe frequency of occult fracture, as detected by MRI, was 34.8%. Thus, MRI is a useful additional imaging method for the detection of occult fractures when radiography is negative. PMID: 23436831 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - February 23, 2013 Category: Radiology Authors: Gufler H, Schulze CG, Wagner S, Baumbach L Tags: Acta Radiol Source Type: research

Pertinent reportable incidental cardiac findings on chest CT without electrocardiography gating: review of 268 consecutive cases.
ConclusionDetection of pertinent reportable cardiac findings on routine chest CT examinations without ECG gating is possible. The high volume of chest CT examinations without ECG gating represents an opportunity for radiologists to comment on the presence or absence of cardiac disease which may influence future clinical decisions. PMID: 23436832 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - February 23, 2013 Category: Radiology Authors: Choy G, Kröpil P, Scherer A, El-Sherief AH, Chung J, Rojas CA, Abbara S Tags: Acta Radiol Source Type: research

Perfusion MRI at rest in subacute and chronic myocardial infarct.
th HJ Abstract BackgroundPerfusion magnetic resonance imaging (MRI) and delayed contrast-enhanced MRI (DE-MRI) serve as tools for tissue characterization.PurposeTo assess and compare semi-quantitative parameters of myocardial infarct (MI) in the subacute and chronic phase, and to correlate these parameters with qualitative enhancement analysis.Material and MethodsPerfusion MRI at rest and DE-MRI were performed in 63 patients with anterior wall MI at 2-3 weeks after revascularization and repeated after 6 months. Descriptive enhancement parameters of contrast arrival time, initial upslope, enhancement at normal tiss...
Source: Acta Radiologica - February 11, 2013 Category: Radiology Authors: Hopp E, Bjørnerud A, Lunde K, Solheim S, Aakhus S, Arnesen H, Forfang K, Edvardsen T, Smith HJ Tags: Acta Radiol Source Type: research

Reversed halo sign in acute pulmonary embolism and infarction.
Conclusion: The reversed halo sign very likely corresponds to pulmonary infarction in patients with acute PE. Its recognition may have important clinical implications. PMID: 23395814 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - February 10, 2013 Category: Radiology Authors: Casullo J, Semionov A Tags: Acta Radiol Source Type: research

Incidental detection of clinically unexpected breast lesions by computed tomography.
Conclusion: Unexpected breast lesions can be identified as a mass or non-mass-like lesion on conventional chest CT scans. Among these, breast cancers that are not clinically apparent occur with considerable prevalence. We suggest that careful interpretation of the breast should be a routine part of CT examinations. PMID: 23395815 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - February 10, 2013 Category: Radiology Authors: Monzawa S, Tetsuo W, Yasuoka R, Mitsuo M, Kadotani Y, Hanioka K Tags: Acta Radiol Source Type: research

Trends in pediatric cardiovascular magnetic resonance imaging.
Trends in pediatric cardiovascular magnetic resonance imaging. Acta Radiol. 2013 Feb 6; Authors: Ntsinjana H, Tann O, Taylor AM Abstract Cardiac magnetic resonance (CMR) imaging has significantly evolved over the last decade, becoming an integral part of the contemporary assessment of both congenital and acquired pediatric heart disease. Recent trends show that there is a growing interest in clinical applications and research in this field. An attempt to discuss the evolving technologies, techniques, and applications of CMR in pediatrics is not complete...
Source: Acta Radiologica - February 6, 2013 Category: Radiology Authors: Ntsinjana H, Tann O, Taylor AM Tags: Acta Radiol Source Type: research

Acute cholecystitis: quantitative and qualitative evaluation with 64-section helical CT.
Conclusion: Acute cholecystitis is associated with myriad suggestive findings on 64-section helical CT. It can be anticipated that familiarity with these findings would result in more confident diagnosis of acute cholecystitis at 64-section helical CT. PMID: 23390157 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - February 6, 2013 Category: Radiology Authors: Soyer P, Hoeffel C, Dohan A, Gayat E, Eveno C, Malgras B, Pautrat K, Boudiaf M Tags: Acta Radiol Source Type: research

Bronchiectasis in active tuberculosis.
Conclusion: Bronchiectasis can be seen within active inflammation in one-fourth of active TB on CT. In association with active inflammation, bronchiectasis is mostly cylindrical with focal erosions, occasionally accompanied by the feeding bronchus sign. PMID: 23390158 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - February 6, 2013 Category: Radiology Authors: Ko JM, Kim KJ, Park SH, Park HJ Tags: Acta Radiol Source Type: research

MRI: how to perform a pediatric scan.
Abstract Magnetic resonance imaging (MRI) is rich in diagnostic information but requires optimization for use in children. The main problems are motion artifacts and poor signal-to-noise ratio (SNR). SNR is proportional to voxel volume, which must therefore not be too small, however, usually needs to be reduced compared to adult imaging to account for the finer anatomy of the child. The use of multi-channel coils with element sizes appropriate for the anatomy of interest ensures optimal baseline SNR. Longer acquisition time increases SNR (with a ...
Source: Acta Radiologica - February 6, 2013 Category: Radiology Authors: Olsen OE Tags: Acta Radiol Source Type: research

Accuracy of routine fat-suppressed FLAIR and diffusion-weighted images in detecting clinically evident optic neuritis.
Conclusion:Being more specific, but not as sensitive, as dedicated CET1WI in acute ON, axial fat-suppressed FLAIR likely has additional value in evaluating for acute ON in "routine" brain MR protocols evaluating for demyelinating disease, while DWI may be hampered by artifacts. PMID: 23386735 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - February 5, 2013 Category: Radiology Authors: McKinney AM, Lohman BD, Sarikaya B, Benson M, Benson MT, Lee MS Tags: Acta Radiol Source Type: research

MR imaging of primary sclerosing cholangitis: additional value of diffusion-weighted imaging and ADC measurement.
ConclusionMR with MRCP is a necessary diagnostic procedure for diagnosis of PSC and evaluation of disease severity. Moreover, DWI could be used in continuation with standard MR sequences for the evaluation of liver fibrosis stage and distribution. PMID: 23386736 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - February 5, 2013 Category: Radiology Authors: Kovac J Tags: Acta Radiol Source Type: research

The effect of gadolinium chelate contrast agent on diffusion-weighted imaging of pancreatic ductal adenocarcinoma.
Conclusion: With increasing SI and SNR of PDA, intravenous contrast administration does not result in a significant difference in quantitative ADC measurements when comparing precontrast to postcontrast DWI when acquired approximately 6-7 min after administration. PMID: 23386737 [PubMed - as supplied by publisher] (Source: Acta Radiologica)
Source: Acta Radiologica - February 5, 2013 Category: Radiology Authors: Liu K Tags: Acta Radiol Source Type: research