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Clinical Imaging

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https://www.readbyqxmd.com/read/28334618/is-there-a-role-of-magnetic-resonance-imaging-in-deciding-to-stop-anti-tumor-necrosis-factor-treatment-in-ileal-crohn-s-disease
#1
Jose C Gallego, Ana Echarri
PURPOSE: This study was performed to assess the ability of magnetic resonance enterography to predict the evolution of patients in whom anti-tumor necrosis factor-α therapy was suspended. METHODS: A prospective study of patients with ileal Crohn's disease was performed. RESULTS: Twenty-nine patients were included. Patients who later relapsed showed higher magnetic resonance scores than those who did not relapse (4.2 vs. 2.5, respectively; p<0...
March 16, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28324714/association-between-nephrolithiasis-and-fatty-liver-detected-on-non-enhanced-ct-for-clinically-suspected-renal-colic
#2
Abdel-Rauf Zeina, Limor Goldenberg, Alicia Nachtigal, Rabea Hasadia, Walid Saliba
PURPOSE: To estimate a direct association between nephrolithiasis and hepatosteatosis in patients referred to CT due to clinical suspicion of renal colic. METHODS: A 508 non-contrast CT scans were examined for calculi in the kidneys or urinary tract, including measurements of liver attenuation, spleen attenuation, thickness of visceral and subcutaneous fat. Logistic regression examined the association of nephrolithiasis and hepatosteatosis findings. RESULTS: Nephrolithiasis was found in 421 (83...
March 16, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28334616/comparison-of-mri-grading-for-cervical-neural-foraminal-stenosis-based-on-axial-and-oblique-sagittal-images-concordance-and-reliability-study
#3
Wooil Kim, Kyung-Sik Ahn, Chang Ho Kang, Woo Young Kang, Kyung-Sook Yang
The aim of this study was to assess the concordance between magnetic resonance imaging (MRI) grading for cervical neural foraminal stenosis (CNFS) based on axial and oblique sagittal images and evaluate the reliability of each grading plane. CNFS was graded at C2-3 to C7-T1 levels based on axial and oblique sagittal images separately by three radiologists. The concordance between CNFS grading based on axial and oblique sagittal images was strong for all three observers (Kendall's W=0.80, 0.79, and 0.82), despite the tendency of higher grading with oblique sagittal images...
March 15, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28324715/assessment-of-clinical-and-radiologic-differences-between-small-and-large-adrenal-pheochromocytomas
#4
Dong Won Kim, Seong Kuk Yoon, Sang Hyeon Kim, Eun Ju Kang, Hee Jin Kwon
OBJECTIVE: To evaluate differences in clinical and radiologic features of small and large pheochromocytomas. MATERIALS AND METHODS: This study included 39 patients with adrenal pheochromocytomas. Several clinical and radiologic features were statistically analyzed and compared between small and large pheochromocytomas. RESULTS: No significant differences were found in clinical features between them. Small pheochromocytomas had more relatively homogeneous attenuation although large pheochromocytomas had more cystic or necrotic changes...
March 10, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28314200/contrast-reaction-training-in-us-radiology-residencies-a-blinded-study
#5
Christina A LeBedis, Andrew B Rosenkrantz, Hansel J Otero, Summer J Decker, Robert J Ward
OBJECTIVE: To perform a survey-based assessment of current contrast reaction training in US diagnostic radiology residency programs. METHODS: An electronic survey was distributed to radiology residency program directors from 9/2015-11/2015. RESULTS: 25.7% of programs responded. 95.7% of those who responded provide contrast reaction management training. 89.4% provide didactic lectures (occurring yearly in 71.4%). 37.8% provide hands-on simulation training (occurring yearly in 82...
March 10, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28319866/contrast-enhanced-ultrasound-and-computed-tomography-findings-of-granulomatosis-with-polyangiitis-presenting-with-multiple-intrarenal-microaneurysms-a-case-report
#6
Youe Ree Kim, Young Hwan Lee, Jong-Ho Lee, Kwon-Ha Yoon
Granulomatosis with polyangiitis (GPA) is a systemic disorder that affects small- and medium- sized vessels in many organs. Although the kidneys are the second most commonly involved organ in patients with GPA, its manifestation as multiple intrarenal aneurysms is rare. We report an unusual manifestation of GPA with multiple intrarenal microaneurysms, as demonstrated by contrast-enhanced ultrasound and computed tomography.
March 9, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28314199/unusual-ultrasound-appearance-of-small-bowel-intussusception-and-secondary-bowel-obstruction-in-a-child-with-peutz-jeghers-syndrome
#7
Lei Wu, Ramesh S Iyer, George T Drugas, A Luana Stanescu
Small bowel intussusception (SBI) in pediatric patients resolves spontaneously in the majority of cases. Pathologic small bowel intussusception with a lead point is rare in children. Ultrasound (US) is the preferred initial imaging study for the diagnosis of intussusception. We report a case of long-segment SBI and secondary bowel obstruction caused by a large hamartomatous polyp. This case emphasizes unique, atypical ultrasound findings that may be encountered in small bowel intussusception, with correlative radiographic, CT (computed tomography) and intra-operative findings...
March 9, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28314197/use-of-hepatobiliary-phase-images-in-gd-eob-dtpa-enhanced-mri-of-breast-cancer-hepatic-metastasis-to-predict-response-to-chemotherapy
#8
Hyun Ji Lee, Chang Hee Lee, Jeong Woo Kim, Yang Shin Park, Jongmee Lee, Kyeong Ah Kim
OBJECTIVES: To determine the prognostic value of Gd-EOB-DTPA MRI findings of liver metastasis from breast cancer. METHODS: 29 metastatic lesions from 12 breast cancer patients who received chemotherapy were retrospectively reviewed. We evaluated hepatobiliary phase of the lesions and classified them as a "target" or "non-target" appearance. The relationship of appearance or SI ratio with tumor response was analyzed. RESULTS: A non-target appearance was more frequent in disease control group than in non-control group [14/18 (77...
March 9, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28334617/comparison-of-two-dimensional-synthesized-mammogram-2dsm-and-conventional-full-field-digital-mammogram-ffdm-for-evaluation-of-breast-cancer
#9
Gayoung Choi, Ok Hee Woo, Hye Seon Shin, Seonah Jang, Kyu Ran Cho, Bo Kyoung Seo
PURPOSE: To compare the diagnostic efficacy of 2DSM and FFDM for evaluation of breast cancer. MATERIALS AND METHODS: A retrospective observer performance study was done by 3 breast radiologists. The diagnostic accuracy, image quality, and detailed lesion characterization of each 2DSM and FFDM were evaluated blindly to determine superior modality. RESULTS: The diagnostic accuracy was not significantly different between two modalities. The image quality was superior in 2DSM (p-value 0...
March 8, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28324716/postnatal-mri-for-cdh-a-pictorial-review-of-late-presenting-and-recurrent-diaphragmatic-defects
#10
REVIEW
Wendy Kim, Jesse Courtier, Cara Morin, Narendra Shet, Eric Strauch, Jane S Kim
Late-presenting or recurrent diaphragmatic defects can pose a diagnostic challenge due to varying clinical presentations. Current diagnostic approaches include plain film radiograph for initial assessment, with other imaging modalities such as fluoroscopy, ultrasound, CT and MRI mainly utilized for troubleshooting. As a radiation-free modality, MRI can provide a more definitive diagnosis in particular cases due to its ability to visualize discontinuity of the diaphragm, distinguishing it from eventration. MRI can also accurately characterize hernia contents, defect location and size...
March 8, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28292712/mr-imaging-of-intestinal-angioedema-related-to-angiotensin-converting-enzyme-inhibitors-report-of-three-cases-and-review-of-literature
#11
Michael R Savino, Pardeep K Mittal, Frank H Miller
Angioedema is a condition in which an increase in vascular permeability leads to the swelling of body tissues. There are both hereditary and acquired forms of the disease, with the latter often associated with the administration of angiotensin-converting enzyme inhibitor medication. Involvement of the intestinal tract is a rare manifestation of angioedema, and can present with abdominal pain, nausea, and vomiting. It is critical for radiologists to be aware of this entity, as they may have the only opportunity to make the diagnosis...
March 8, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28314198/automated-segmentation-of-mr-imaging-to-determine-normative-central-nervous-system-cerebrospinal-fluid-volumes-in-healthy-volunteers
#12
J Levi Chazen, Jonathan P Dyke, Robert W Holt, Laura Horky, Rachel A Pauplis, Jacob Y Hesterman, P David Mozley, Ajay Verma
An accurate non-invasive method to determine total body cerebrospinal fluid volume has a number of potential diagnostic and therapeutic applications. Herein we describe a technique for automated segmentation of total body MRI data to determine cranial and spinal CSF volume in 15 healthy adults. These in vivo estimates of CSF volume exceed the standard reported volume of 150mL in human adults and provide normative data for diagnosis of disease states such as hydrocephalus and therapy including pharmacologic dosimetry...
March 2, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28282598/unenhanced-computed-tomography-for-normal-appendix-detection-comparison-of-low-dose-with-statistical-iterative-reconstruction-and-regular-dose-with-filtered-back-projection
#13
Hwi Ryong Park, Sung Bin Park, Eun Sun Lee, Hyun Jeong Park, Jong Beum Lee, Yang Soo Kim
PURPOSE: To evaluate the differences in visualization of a normal appendix between regular-dose (RD) and low-dose (LD) unenhanced CT. MATERIAL AND METHODS: 179 patients underwent both RDCT and LDCT for urolithiasis. Two reviewers evaluated the appendiceal visualization on a three-point scale. Sensitivities and interobserver agreement were measured. RESULTS: There were no significant differences between RDCT and LDCT in sensitivity, regardless of the reviewer...
March 1, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28278445/no-catheter-angiography-is-needed-in-patients-with-an-obscure-acute-gastrointestinal-bleed-and-negative-cta
#14
Pratik A Shukla, Adam Zybulewski, Marcin K Kolber, Erik Berkowitz, James Silberzweig, Morris Hayim
PURPOSE: To evaluate the negative predictive power of computed tomography angiography (CTA) for the identification of obscure acute gastrointestinal (GI) bleeding (GI bleeding not visualized/treated by endoscopy) on subsequent mesenteric angiography (MA) with the intention to treat. MATERIALS AND METHODS: A retrospective chart review of patients was performed who underwent mesenteric angiography for the evaluation/treatment of acute GI bleeding between November 2012 and July 2016...
March 1, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28278446/fluorocholine-pet-ct-predicts-skeletal-progression-skeletal-event-and-cancer-specific-survival-in-patients-with-biochemical-relapse-for-prostate-cancer
#15
Fabio Zattoni, Emanuela Agostini, Francesco Cattaneo, Marco Maruzzo, Umberto Basso, Filiberto Zattoni, Laura Evangelista
PURPOSE: The aim of our study is to evaluate the prognostic impact of (18)F-Choline (FCh) positron emission tomography (PET)/computed tomography (CT), CT alone and methylene diphophonate bone scan (MDP-BS) in prostate cancer (PCa) patients with biochemical relapse. METHODS: We retrospectively selected 58 patients who underwent, between June 2010 and February 2013, both FCh-PET/CT and MDP-BS within a maximum time interval of 5months. All patients had a biochemical PCa recurrence after radical prostatectomy and/or radiation therapy...
February 24, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28273653/unusual-migration-of-fractured-ercp-guidewire-a-case-report
#16
Christy B Pomeranz, Natasha E Wehrli, Amy Tyberg, Lily M Belfi
Endoscopic retrograde cholangiopancreatography (ERCP) routinely uses hydrophilic guidewires to cannulate ducts and traverse stenoses. Fracture of these guidewires have been reported, however, migration of these fractured fragments is an extremely rare occurrence that has yet to be reported in the literature. We present a case of a fractured ERCP guidewire with extensive migration in the retroperitoneal and lower extremity soft tissues and vasculature with radiologic correlation across multiple modalities-MRI, CT, and radiographs-as well as pathologic correlation...
February 22, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28273652/potential-of-gadolinium-as-contrast-material-in-second-generation-dual-energy-computed-tomography-an-ex-vivo-phantom-study
#17
Malte N Bongers, Christoph Schabel, Bernhard Krauss, Claus D Claussen, Konstantin Nikolaou, Christoph Thomas
PURPOSE: To evaluate the potential of gadolinium (Gd) as contrast material (CM) in second generation dual energy computed tomography (DECT). MATERIAL AND METHODS: In a phantom model, DECT post-processing was used to increase Gd attenuation using advanced monoenergetic extrapolation (MEI), to create virtual non-contrast images (Gd-VNC) and Gd maps and to quantify Gd content. Dilutions of Gd and iodinated CM (7-296 HU) were filled in syringes, placed in an attenuation phantom and scanned with standard DECT protocols (80 &100/Sn140 kV)...
February 22, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28259031/follicular-lymphoma-transforming-into-diffuse-large-b-cell-lymphoma-in-spleen-simultaneous-appearance-of-both-on-18-f-fdg-pet-ct-and-histology
#18
William Makis, Anthony Ciarallo, Tina Petrogiannis-Haliotis, Arthur Rosenberg, Stephan Probst
Low grade lymphoma may transform into a more aggressive lymphoma and this transformation is usually associated with a poor outcome. A 65year old man presented with two metabolically active splenic lesions on a staging [18F] fluoro-2-deoxy-d-glucose ((18)F-FDG) positron emission tomography/computed tomography (PET/CT). Histologic evaluation post splenectomy confirmed the presence of two clonally related lymphomas: a follicular lymphoma (FL) and a diffuse large B-cell lymphoma (DLBCL). Molecular genetic studies confirmed that the DLBCL lesions arose from a pre-existing FL...
February 21, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28242555/imaging-prevalence-of-nasal-septal-perforation-in-an-urban-population
#19
Menachem Gold, Issac Boyack, Nicholas Caputo, Aaron Pearlman
OBJECTIVE: To determine the prevalence of nasal septal perforation (NSP) on CT imaging in an urban hospital setting. METHODS: Facial bone CT scans from 3708 consecutive patients were reviewed for the presence of NSP. Size of the perforation was measured in two dimensions. Medical records were reviewed for possible risk factors. RESULTS: The prevalence of NSP was 2.05%. The most common risk factor was a history of drug abuse. Cocaine was the most prevalent drug used...
February 20, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28273654/cost-effectiveness-of-diagnostic-evaluation-strategies-for-individuals-with-stable-chest-pain-syndrome-and-suspected-coronary-artery-disease
#20
James K Min, Amanda Gilmore, Erica C Jones, Daniel S Berman, Wijnand J Stuijfzand, Leslee J Shaw, Ken O'Day, Ibrahim Danad
PURPOSE: To determine lifetime cost-effectiveness of diagnostic evaluation strategies for individuals with stable chest pain and suspected coronary artery disease (CAD). METHODS: Exercise treadmill testing (ETT), stress echocardiography (SE), myocardial perfusion scintigraphy (MPS), coronary computed tomographic angiography (CCTA), and invasive coronary angiography (ICA) were assessed alone, or in succession to each other. RESULTS: Initial ETT followed by imaging wherein ETT was equivocal or unable to be performed appeared more cost-effective than any strategy employing initial testing by imaging...
February 10, 2017: Clinical Imaging
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