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https://www.readbyqxmd.com/read/28911220/contrast-enhanced-ultrasound-ceus-liver-imaging-reporting-and-data-system-li-rads-2017-a-review-of-important-differences-compared-to-the-ct-mri-system
#1
Tae Kyoung Kim, Seung Yeon Noh, Stephanie R Wilson, Yuko Kono, Fabio Piscaglia, Hyun-Jung Jang, Andrej Lyshchik, Christoph F Dietrich, Juergen K Willmann, Alexander Vezeridis, Claude B Sirlin
Medical imaging plays an important role in the diagnosis and management of hepatocellular carcinoma (HCC). The Liver Imaging Reporting and Data System (LI-RADS) was initially created to standardize the reporting and data collection of CT and MR imaging for patients at risk for HCC. As contrast-enhanced ultrasound (CEUS) has been widely used in clinical practice, it has recently been added to the LI-RADS. While CEUS LI-RADS shares fundamental concepts with CT/MRI LI-RADS, there are key differences between the modalities reflecting dissimilarities in the underlying methods of image acquisition and types of contrast material...
September 15, 2017: Clinical and Molecular Hepatology
https://www.readbyqxmd.com/read/28905201/assessment-of-intratumor-heterogeneity-in-mesenchymal-uterine-tumor-by-an-18-f-fdg-pet-ct-texture-analysis
#2
Tetsuya Tsujikawa, Makoto Yamamoto, Kunihiro Shono, Shizuka Yamada, Hideaki Tsuyoshi, Yasushi Kiyono, Hirohiko Kimura, Hidehiko Okazawa, Yoshio Yoshida
OBJECTIVE: The aim of this study was to retrospectively evaluate the clinical significance of (18)F-FDG PET/CT textural features for discriminating uterine sarcoma from leiomyoma. METHODS: Fifty-five patients with suspected uterine sarcoma based on ultrasound and MRI findings who underwent pretreatment (18)F-FDG PET/CT were included. Fifteen patients were histopathologically proven to have uterine sarcoma, 14 patients by surgical operation and one by biopsy, and 40 patients were diagnosed with leiomyoma by surgical operation or in a follow-up for at least 2 years...
September 13, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28905091/added-value-of-dedicated-axillary-hybrid-18f-fdg-pet-mri-for-improved-axillary-nodal-staging-in-clinically-node-positive-breast-cancer-patients-a-feasibility-study
#3
Thiemo J A van Nijnatten, B Goorts, S Vöö, M de Boer, L F S Kooreman, E M Heuts, J E Wildberger, F M Mottaghy, M B I Lobbes, M L Smidt
PURPOSE: To investigate the feasibility and potential added value of dedicated axillary 18F-FDG hybrid PET/MRI, compared to standard imaging modalities (i.e. ultrasound [US], MRI and PET/CT), for axillary nodal staging in clinically node-positive breast cancer. METHODS: Twelve patients with clinically node-positive breast cancer underwent axillary US and dedicated axillary hybrid 18F-FDG PET/MRI. Nine of the 12 patients also underwent whole-body PET/CT. Maximum standardized uptake values (SUVmax) were measured for the primary breast tumor and the most FDG-avid axillary lymph node...
September 14, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28904658/prenatal-diagnosis-of-caudal-regression-syndrome-and-omphalocele-in-a-fetus-of-a-diabetic-mother
#4
Haifa Bouchahda, Houda El Mhabrech, Hechmi Ben Hamouda, Sobhi Ghanmi, Rim Bouchahda, Habib Soua
The caudal regression syndrome is defined as total or partial agenesis of the sacrum and lumbar spine, frequently associated with other developmental malformations (orthopedic, neurological, genito-urinary, gastrointestinal…). Prenatal diagnosis is possible through fetal ultrasound (US) and magnetic resonance imaging (MRI). A case of fetal caudal regression syndrome with omphalocele from a diabetic mother is presented, demonstrating the sonographic, MRI, CT and X-Ray features diagnostic. We will also discuss neonatal findings, risk factors and prognosis of this condition...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28901055/phantom-based-image-quality-test-methods-for-photoacoustic-imaging-systems
#5
William C Vogt, Congxian Jia, Keith A Wear, Brian S Garra, T Joshua Pfefer
As photoacoustic imaging (PAI) technologies advance and applications arise, there is increasing need for standardized approaches to provide objective, quantitative performance assessment at various stages of the product development and clinical translation process. We have developed a set of performance test methods for PAI systems based on breast-mimicking tissue phantoms containing embedded inclusions. Performance standards for mature imaging modalities [magnetic resonance imaging (MRI), computed tomography (CT), and ultrasound] were used to guide selection of critical PAI image quality characteristics and experimental methods...
September 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/28894327/detection-of-distant-metastases-in-patients-with-locally-advanced-breast-cancer-role-of-18-f-fluorodeoxyglucose-positron-emission-tomography-computed-tomography-and-conventional-imaging-with-computed-tomography-scans
#6
Almir Galvão Vieira Bitencourt, Wesley Pereira Andrade, Rodrigo Rodrigues da Cunha, Jorge Luis Fonseca de Acioli Conrado, Eduardo Nóbrega Pereira Lima, Paula Nicole Vieira Pinto Barbosa, Rubens Chojniak
OBJECTIVE: To evaluate positron emission tomography/computed tomography (PET/CT) and conventional imaging tests for the detection of distant metastases in patients with locally advanced breast cancer. MATERIALS AND METHODS: We included 81 patients with breast cancer who had undergone (18)F-fluorodeoxyglucose (FDG) PET/CT before treatment. Conventional imaging included the following: bone scintigraphy; chest X-ray (in 14.5%) or CT (in 85.5%); and abdominal ultrasound (in 10...
July 2017: Radiologia Brasileira
https://www.readbyqxmd.com/read/28892976/diagnosis-and-treatment-of-duodenal-lipoma-a-systematic-review-and-a-case-report
#7
REVIEW
Mao Wei Pei, Ming Rong Hu, Wen Bin Chen, Chao Qin
INTRODUCTION: Duodenal lipoma is very rare with limited case reports present in literature. Owing to recent advances in endoscopy and modern imaging techniques, more cases are being diagnosed and treated. However, no systematic study of duodenal lipomas has been reported. AIM: To study the diagnosis and treatment of duodenal lipoma in a female patient and review the relative literatures to enhance the knowledge of it. MATERIALS AND METHODS: A literature search for 'duodenal lipoma' was performed on PubMed...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28889228/intraosseous-migration-of-tendinous-calcifications-two-case-reports
#8
A Marinetti, M Sessa, A Falzone, S W Della Sala
Calcific tendinopathy of the rotator cuff is a common cause of shoulder pain. Inflammation of the rotator cuff tendons may be complicated by adjacent bone erosion and subsequent migration of calcific deposits within the bone resulting in marrow inflammation. Bone marrow involvement is not readily visible using X-ray and ultrasound (US) and further testing is necessary. Magnetic resonance imaging (MRI) is a highly sensitive technique that can detect a focal bone T1 and T2-weighted hypointensity with bone marrow edema-like signal and cortical erosion...
September 9, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28888228/transperineal-cryotherapy-for-unresectable-muscle-invasive-bladder-cancer-preliminary-experience-with-7-male-patients
#9
Qing Zhang, Shiwei Zhang, Shun Zhang, Wei Wang, Xiaozhi Zhao, Yongming Deng, Huibo Lian, Hongqian Guo
BACKGROUND: Radical cystectomy (RC) with pelvic lymph node dissection (PLND) and urinary diversion (UD) is considered the standard treatment for muscle invasive bladder cancer (MIBC). In a part of patients, RC procedure is aborted due to unresectable disease, other followed treatment like systemic chemotherapy, radiotherapy or cryotherapy may be a better option. The aim of present study was to report the preliminary results of transperineal cryotherapy for unresectable muscle invasive bladder cancer...
September 9, 2017: BMC Urology
https://www.readbyqxmd.com/read/28886025/robust-phase-retrieval-based-x-ray-tomography-for-morphological-assessment-of-early-hepatic-echinococcosis-infection-in-rats
#10
Huiqiang Liu, Chuanshan Zhang, Xiaoxi Fan, Yingni Duan, Tiqiao Xiao, Guohao Du, Yanan Fu, Haigang Liu, Hao Wen
Propagation-based phase-contrast computed micro-tomography (PPCT) dominates the non-destructive, three-dimensional inner-structure measurement in synchrotron-based biomedical research due to its simple experimental setup. To quantitatively visualize tiny density variations in soft tissues and organs closely related to early pathological morphology, an experimental study of synchrotron-based X-ray PPCT combined with generalized phase and attenuation duality (PAD) phase retrieval was implemented with the hepatic echinococcosis (HE) infection rat model at different stages...
2017: PloS One
https://www.readbyqxmd.com/read/28885205/reduced-microperfusion-due-to-portal-vein-thrombosis-impact-on-the-outcome-of-percutaneous-thermal-tumor-ablation
#11
B Pregler, L P Beyer, I Wiesinger, M Haimerl, C Stroszczynski, E M Jung, P Wiggermann
PURPOSE: To determine the influence of pre-interventionally existing portal vein thrombosis on the ablation success of percutaneous tumor ablation of HCC. MATERIALS AND METHODS: 15 patients with HCC and pre-existing portal vein thrombosis underwent thermal tumor ablation. We retrospectively analyzed the pre- and post-interventionally performed CT and MRI scans in terms of technical success as well as the complication rate. The portal vein thrombosis was classified into segmental, lobar and central thrombus...
September 4, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28872701/natural-history-of-pancreatic-cystic-lesions-a-multicenter-prospective-observational-study-for-evaluating-the-risk-of-pancreatic-cancer
#12
Eizaburo Ohno, Yoshiki Hirooka, Hiroki Kawashima, Takuya Ishikawa, Akira Kanamori, Hideki Ishikawa, Yoji Sasaki, Koji Nonogaki, Kazuo Hara, Senju Hashimoto, Hiroshi Matsubara, Takanori Hirai, Hajime Sumi, Hiroyuki Sugimoto, Hidemi Goto
BACKGROUD AND AIM: To elucidate the natural history of pancreatic cystic lesions (PCLs), including branch-duct intraductal papillary mucinous neoplasm (BD-IPMN), via mid-term follow-up analysis of a multicenter prospective observational study (NSPINAL study). METHODS: From July 2011 to October 2016, 881 patients with PCLs were enrolled in NSPINAL study, and 664 patients with >12 months of follow-up were analysed. Every patient was asymptomatic, and endoscopic ultrasound (EUS) was performed at the initial diagnosis to exclude high-risk individuals...
September 5, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28872552/pancreatoblastoma-with-metastatic-retroperitoneal-lymph-node-and-pet-ct
#13
Giuseppe Corrias, Monica Ragucci, Olca Basturk, Luca Saba, Lorenzo Mannelli
A previously healthy 4-year-old girl presented with petechial rash and low platelet count. There were no other symptoms. On abdominal ultrasound, a 4.7-cm heterogeneous mass was demonstrated anterior to the left kidney. An abdominal MRI subsequently performed demonstrated a heterogeneously enhancing mass at the same location extending to the pancreas and spleen. A surgical biopsy of the mass was obtained. Pathology reported a malignant epithelioid neoplasm consistent with pancreatoblastoma. The mass demonstrated intense FDG uptake on PET and an FDG avid retrocaval lymph node...
September 1, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28870430/uncommon-liver-lesions-with-multimodality-imaging-and-pathology-correlation
#14
REVIEW
A K Ho, S Girgis, G Low
Uncommon liver lesions pose a diagnostic challenge because of unfamiliar imaging findings. For simplification, these lesions can be divided into four broad categories based on the dominant imaging feature in each: hypervascular, hypovascular, fat-containing, or cystic lesions. In this review, we profile the radiological features of uncommon liver lesions on multimodality imaging including ultrasound (US), computed tomography (CT), magnetic resonance imaging (MRI), and nuclear medicine.
September 1, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28867377/ultrasound-induced-mild-hyperthermia-improves-the-anticancer-efficacy-of-both-taxol%C3%A2-and-paclitaxel-loaded-nanocapsules
#15
Tanguy Boissenot, Alexandre Bordat, Benoît Larrat, Mariana Varna, Hélène Chacun, Angelo Paci, Vianney Poinsignon, Elias Fattal, Nicolas Tsapis
We study the influence of ultrasound on paclitaxel-loaded nanocapsules in vitro and in vivo. These nanocapsules possess a shell of poly(dl-lactide-co-glycolide)-poly(ethylene glycol) (PLGA-PEG) and a liquid core of perfluorooctyl bromide (PFOB). In vitro experiments show that mechanical effects such as cavitation are negligible for nanocapsules due to their small size and thick and rigid shell. As the mechanical effects were unable to increase paclitaxel delivery, we focused on the thermal effects of ultrasound in the in vivo studies...
September 1, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28861704/multimodal-image-registration-based-on-binary-gradient-angle-descriptor
#16
Dongsheng Jiang, Yonghong Shi, Demin Yao, Yifeng Fan, Manning Wang, Zhijian Song
PURPOSE: Multimodal image registration plays an important role in image-guided interventions/therapy and atlas building, and it is still a challenging task due to the complex intensity variations in different modalities. METHODS: The paper addresses the problem and proposes a simple, compact, fast and generally applicable modality-independent binary gradient angle descriptor (BGA) based on the rationale of gradient orientation alignment. The BGA can be easily calculated at each voxel by coding the quadrant in which a local gradient vector falls, and it has an extremely low computational complexity, requiring only three convolutions, two multiplication operations and two comparison operations...
August 31, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28861631/unenhanced-magnetic-resonance-imaging-immediately-after-radiofrequency-ablation-of-liver-malignancy-preliminary-results
#17
Mirko D'Onofrio, Nicolò Cardobi, Andrea Ruzzenente, Simone Conci, Valentina Ciaravino, Alfredo Guglielmi, Roberto Pozzi Mucelli
PURPOSE: To assess the accuracy of unenhanced magnetic resonance imaging (MRI) immediately after the percutaneous ultrasound-guided radiofrequency ablation (RFA) of liver malignancy in predicting treatment efficacy at CT follow-up. MATERIALS AND METHODS: Percutaneous ablation was prospectively performed in 23 liver malignancies (20 hepatocarcinomas and 3 metastases). After the procedure in the same day all patients were studied with unenhanced MRI. The best sequence to detect the coagulative necrosis was visually established...
August 31, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28861424/cystic-adventitial-disease-case-series-and-review-of-literature
#18
Shuo Li, Brian N King, Noel Velasco, Yogesh Kumar, Nishant Gupta
Cystic adventitial disease (CAD) is a rare vascular disorder that involves the arteries and rarely the veins, most commonly found in the popliteal artery of male patients. Etiology of CAD is uncertain and currently without a consensus agreement. Clinically, the most common presenting symptom is claudication. Diagnosis requires a strong clinical suspicion in patients with intermittent claudication, but without other risk factors for atherosclerotic disease. Angiography, ultrasound (US), computed tomography (CT) and magnetic resonance imaging (MRI) can all be used for diagnosis...
August 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28858276/-surgical-treatment-of-patients-with-arteriovenous-head-and-neck-angiodisplasia
#19
I V Stepanov, M S Olshanskiy, D Yu Kharitonov, E S Stepanova
The aim of the study was to assess the results of surgical treatment in 74 patients with extensive arteriovenous angiodisplasia in the head and neck area. All patients underwent complex examination including ultrasound, CT and MRI with contrast and selective carotid angiography. The lesions excision was performed after endovascular embolization and soft tissue defects were restored by various methods selected according to prevalent vascular lesion type (arterial, arteriovenous, venous, capillary) and blood flow values (high flow, low flow, mixed)...
2017: Stomatologii︠a︡
https://www.readbyqxmd.com/read/28852812/pediatric-providers-and-radiology-examinations-knowledge-and-comfort-levels-regarding-ionizing-radiation-and-potential-complications-of-imaging
#20
Benjamin Wildman-Tobriner, Victoria M Parente, Charles M Maxfield
BACKGROUND: Pediatric providers should understand the basic risks of the diagnostic imaging tests they order and comfortably discuss those risks with parents. Appreciating providers' level of understanding is important to guide discussions and enhance relationships between radiologists and pediatric referrers. OBJECTIVE: To assess pediatric provider knowledge of diagnostic imaging modalities that use ionizing radiation and to understand provider concerns about risks of imaging...
August 29, 2017: Pediatric Radiology
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