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Clinical Imaging

Masafumi Toyoshima, Keita Tsuji, Shogo Shigeta, Hideki Tokunaga, Kiyoshi Ito, Yoh Watanabe, Kosuke Yoshinaga, Takeo Otsuki, Hitoshi Niikura, Nobuo Yaegashi
Leptomeningeal metastasis (LM) is rarely observed in gynecologic cancers. As gadolinium-enhanced magnetic resonance imaging (Gd-MRI) is highly effective for diagnosing LM, the aim of this study is to describe the clinical behaviors and outcomes of LM patients who were diagnosed by Gd-MRI. After securing institutional review board approvals, we retrospectively reviewed patient records. Eight patients were found to have LM from gynecological malignancies. Primary tumors included three ovarian cancers, one tubal cancer, one peritoneal cancer, two endometrial cancers, and one cervical cancer...
September 30, 2016: Clinical Imaging
Michael V Friedman, J Derek Stensby, Jeremiah R Long, Stephen A Currie, Travis J Hillen
PURPOSE: Review the MRI appearance of different bursae located throughout the pelvis, including the pertinent osseous and musculotendinous anatomy. MATERIALS AND METHODS: Bursae are potential spaces that reduce friction between opposed moving components which can become inflamed, clinically mimicking internal derangement. RESULTS: This series illustrates the most common as well as lesser-known pelvic bursae. Common causes of bursitis including overuse, trauma, and infection are presented...
September 28, 2016: Clinical Imaging
Mari Sakuragi, Aki Kido, Yuki Himoto, Yusuke Onishi, Kaori Togashi
PURPOSE: To investigate specific MRI findings for the prompt diagnosis of tubal torsion by reviewing 12 cases. METHODS: The MRI findings presenting surgically and pathologically proven isolated tubal torsion were evaluated. RESULTS: Key specific findings, including whirlpool sign and plicae tubaliae, were frequently associated with the diseases and were grouped for three types. CONCLUSION: Knowledge of specific MRI findings and the types of tubal torsion may lead to a correct and prompt diagnosis, resulting in preservation of fertility...
September 28, 2016: Clinical Imaging
Semra Duran, Mehtap Cavusoglu, Onur Kocadal, Bulent Sakman
This study aimed to compare trochlear morphology seen in magnetic resonance imaging between patients with chondromalacia patella and age-matched control patients without cartilage lesion. Trochlear morphology was evaluated using the lateral trochlear inclination, medial trochlear inclination, sulcus angle and trochlear angle on the axial magnetic resonance images. Consequently, an association between abnormal trochlear morphology and chondromalacia patella was identified in women. In particular, women with flattened lateral trochlea are at an increased risk of patellar cartilage structural damage...
September 28, 2016: Clinical Imaging
Zehour AlSabban, Peter Church, Rahim Moineddin, Oscar M Navarro, Mary-Louise Greer, Thomas Walters, Govind B Chavhan
PURPOSE: To determine interobserver agreement (IOA) and accuracy of conventional MR enterography (MRE), qualitative diffusion, and apparent diffusion coefficient (ADC) values for detecting clinically active inflammation. METHODS: MREs in 57 consecutive children with suspected inflammatory bowel disease were retrospectively reviewed. RESULTS: Substantial IOA for conventional MRE (kappa=0.65) and qualitative diffusion (kappa=0.64), but fair to good IOA for ADC, (intra-class coefficient=0...
September 28, 2016: Clinical Imaging
Nicola Guglielmo, Brice Malgras, Vinciane Place, Youcef Guerrache, Karine Pautrat, Marc Pocard, Philippe Soyer
Torsion of a uterine leiomyoma is a rare complication that can be life threatening because of ischemia or necrosis. This condition may also lead to gastrointestinal complications such as obstruction or, more rarely, small bowel volvulus. Its diagnosis is difficult and can be facilitated with the use of computed tomography or magnetic resonance imaging. Treatment is based on emergency surgical resection of the twisted uterine leiomyoma and detorsion of the small bowel volvulus.
September 28, 2016: Clinical Imaging
Mansi R Shah, Milana Flusberg, Viktoriya Paroder, Alla M Rozenblit, Victoria Chernyak
PURPOSE: The purpose was to compare hepatic arterial phase (HAP) respiratory motion artifact (RMA) between gadoxetate, gadobutrol, gadopentetate, and gadobenate. MATERIALS/METHODS: Two hundred cases of each gadolinium agent were included. RMA was assigned using 5-point Likert scale (1=no motion, 5=extreme motion) on precontrast and HAP. RMA increase (increase ≥1 on HAP from precontrast) was the outcome in logistic regression. RESULTS: Odds of RMA increase for gadoxetate were 5...
September 13, 2016: Clinical Imaging
Jay Karajgikar, Gregory Grimaldi, Barak Friedman, John Hines
Rosai-Dorfman disease is a rare disorder of unknown etiology caused by the proliferation of histiocytes within lymph nodes, predominantly in the cervical chain. Extranodal sites may be involved as well, with involvement of nearly every organ system described in the literature. Abdominal and pelvic manifestations of Rosai-Dorfman disease are extremely rare. We present four cases of abdominal and pelvic involvement by Rosai-Dorfman disease, specifically within the biliary tract, pancreas, spleen, and presacral space...
September 13, 2016: Clinical Imaging
Mehmet Öztürk, Ahmet Sığırcı, Serkan Ünlü
PURPOSE: This study aimed to determine differences according to age groups and gender in the parameters of aqueductal cerebrospinal fluid (CSF) flow in childhood using phase-contrast cine magnetic resonance imaging (MRI) method. MATERIALS AND METHODS: This prospective study included 47 boys and 36 girls for a total of 83 healthy children. The cases were divided into three groups depending on age as infants (1-12 months), children (12-120 months), and adolescents (120-204 months)...
September 13, 2016: Clinical Imaging
Nicole Berger, Sibylle Dubach Schwizer, Zsuzsanna Varga, Christoph Rageth, Thomas Frauenfelder, Andreas Boss
OBJECTIVES: The objective was to determine if digital tomosynthesis of the breast (DBT) assesses the extension of ductal carcinoma in situ (DCIS) with higher precision than mammography (MG). MATERIAL AND METHODS: The local ethics committee approved this retrospective study including 26 patients with DCIS, which were rated by three radiologists. Statistics were performed using intraclass correlation (ICC) for interreader agreement and the Pearson correlation for correlation of MG and DBT...
September 13, 2016: Clinical Imaging
Jan Hering, Frederik Bernd Laun, Wolfgang Lederer, Heidi Daniel, Tristan Anselm Kuder, Anne Stieber, Stefan Delorme, Klaus H Maier-Hein, Heinz-Peter Schlemmer, Sebastian Bickelhaupt
INTRODUCTION: To evaluate the feasibility and accuracy of a semiautomatic, three-dimensional volume of interest (3D sphere) for measuring the apparent diffusion coefficient (ADC) in suspicious breast lesions compared to conventional single-slice two-dimensional regions of interest (2D ROIs). METHOD: This institutional-review-board-approved study included 56 participants with Breast Imaging Reporting and Data System 4/5 lesion. All received diffusion-weighted imaging magnetic resonance imaging prior to biopsy (b=0-1500 s/mm(2))...
September 4, 2016: Clinical Imaging
Daniella F Pinho, Naama Lev-Cohain, Haitham Awdeh, Yin Xi, Gaurav Khatri, Takeshi Yokoo, Ivan Pedrosa
PURPOSE: To compare a protocol with higher concentration macrocyclic gadolinium-based contrast agent (GBCA) [study group] to the traditional protocol with lower-concentration linear GBCAs [control group] for breath-held arterial phase magnetic resonance imaging. MATERIAL AND METHODS: A total of 136 patients were quantitatively evaluated for image quality (IQ), breathing artifacts (BA), and timing of the arterial phase (Tap). Quantitative analysis was also performed...
September 4, 2016: Clinical Imaging
Zhiye Wang, Meizhu Zheng, Shuang Xia
Carcinomas of external auditory canal (EAC) are rare. Radiological imaging particular in computed tomography (CT) and magnetic resonance imaging (MRI) plays an important role in the staging, treatment planning and follow up of the patients with malignant EAC tumor. This article aims to review the role of CT and MRI in the describing different tumor growth pattern, tumor staging, treatment planning, follow up and predicting the prognosis of malignant tumors of EAC.
September 4, 2016: Clinical Imaging
Shigeru Matsushima, Takeshi Sato, Hideyuki Nishiofuku, Yozo Sato, Shinichi Murata, Yasutomi Kinosada, Seiichi Era, Yoshitaka Inaba
PURPOSE: To evaluate and compare the usefulness of equivalent cross-relaxation rate (ECR) imaging (ECRI) and diffusion-weighted imaging (DWI) in the early prediction of the response of bevacizumab-containing treatments of colorectal liver metastases. METHODS AND MATERIAL: Seven patients received bevacizumab-containing treatments for colorectal liver metastases. Serial magnetic resonance imaging was performed to evaluate responses before and 2 weeks after starting chemotherapy...
August 30, 2016: Clinical Imaging
Yun Hee Kang, Geon Park
PURPOSE: To assess the characteristics of 18F-fluorodeoxyglucose (FDG) uptake in persisting anastomotic sinus and fistula following rectal cancer surgery. METHODS: Eight patients with anastomotic sinus and fistula were retrospectively studied. RESULTS: A total of 13 anastomotic sinuses (n=11) and fistulas (n=2) were observed. Sixteen FDG-positron emission tomography/computed tomography studies for 13 lesions performed and 26 uptake patterns were evaluated...
August 26, 2016: Clinical Imaging
Toshiki Dodo, Tomohisa Okada, Akira Yamamoto, Mitsunori Kanagaki, Yasutaka Fushimi, Tsutomu Okada, Akihiko Sakata, Yoshiki Arakawa, Susumu Miyamoto, Kaori Togashi
PURPOSE: This study aims to investigate difference between magnetization-prepared rapid gradient-echo imaging (MPRAGE) and spin-echo (SE) imaging for evaluating glioma on pre-contrast-enhanced (CE) and post-CE T1-weighted images at 3 T. MATERIALS AND METHODS: We retrospectively assessed pre-CE and post-CE T1-weighted images for tumor contrast in 64 consecutive glioma patients. RESULTS: In the nonenhancing tumors, the contrast was significantly clearer in MPRAGE than SE...
August 26, 2016: Clinical Imaging
Panagiotis A Sideras, John Matthews, S M Nazmus Sakib, Franka Ofikwu, Vadim Spektor
Neurolymphomatosis is a rare neurological syndrome in lymphomas. It is reported as infiltration of peripheral nerves by lymphoma. It is important to distinguish neurolymphomatosis from other types of neuropathies, particularly infectious and inflammatory conditions. However, it is difficult to isolate a cancer-related inflammatory vasculitis and mononeuritis multiplex without definitive histopathologic examination. In this report, we describe a case of non-Hodgkin's lymphoma involving the peroneal nerve and presenting as neurolymphomatosis...
August 26, 2016: Clinical Imaging
Mittul Gulati, Suzanne L Palmer, Michael Y Im, Hossein Jadvar, Yasir A Qazi, Umer Fazli, Edward G Grant
PURPOSE: This study aims to determine a velocity threshold in the main renal vein (MRV) of renal transplants and evaluate the cause and clinical significance of elevated velocity. METHODS: Maximum MRV velocity from 331 consecutive renal transplant Doppler ultrasounds in 170 patients was recorded. A priori, twice the median MRV velocity was selected as the threshold for elevation. Ultrasounds were divided into "early" and "late" periods based on time after transplantation...
August 26, 2016: Clinical Imaging
Binghu Jiang, Huaijun Liu, Dan Zhou
OBJECTIVE: This study aims to perform a metaanalysis to assess the diagnostic performance and clinical utility of the dynamic magnetic resonance imaging (MRI) in discrimination of benign and malignant pulmonary nodules. MATERIALS AND METHODS: We searched PubMed, EMBASE, and Cochrane Library from January 1995 to May 2015 for studies evaluating the diagnostic accuracy of dynamic MRI in discriminating benign from malignant pulmonary nodules. Methodological quality was assessed by the Quality Assessment of Diagnostic Accuracy Studies-2...
August 26, 2016: Clinical Imaging
Piero Boraschi, Francescamaria Donati, Massimiliano Rossi, Davide Ghinolfi, Franco Filipponi, Fabio Falaschi
PURPOSE: This study aims to assess the role of multidetector computed tomography (MDCT) for detecting early abdominal complications after orthotopic liver transplantation. MATERIALS AND METHODS: We retrospectively enrolled 170 subjects with clinical laboratory and/or echo-color Doppler abnormalities who underwent MDCT within the first 90 days after transplantation. All images were reviewed by two radiologists in conference and imaging results were correlated with digital subtraction angiography, conventional cholangiography, surgery, clinical laboratory, and/or imaging follow-up...
August 26, 2016: Clinical Imaging
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