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Clinical Imaging

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https://www.readbyqxmd.com/read/28095361/axial-traction-magnetic-resonance-imaging-mri-of-the-glenohumeral-joint-in-healthy-volunteers-initial-experience
#1
Elisabeth R Garwood, Richard B Souza, Amy Zhang, Alan L Zhang, C Benjamin Ma, Thomas M Link, Daria Motamedi
OBJECTIVE: Evaluate technical feasibility and potential applications of glenohumeral (GH) joint axial traction magnetic resonance imaging (MRI) in healthy volunteers. MATERIALS AND METHODS: Eleven shoulders were imaged in neutral and with 4kg axial traction at 3T. Quantitative measurements were assessed. RESULTS: Axial traction was well tolerated. There was statistically significant widening of the superior GH joint space (p=0.002) and acromial angle (p=0...
January 3, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28068586/preliminary-investigation-of-whole-pancreas-3d-histogram-adc-metrics-for-predicting-progression-of-acute-pancreatitis
#2
Amir K Iranmahbook, Andrea S Kierans, Chenchan Huang, Justin M Ream, Andrew B Rosenkrantz
PURPOSE: To evaluate whole-pancreas 3D-histogram ADC metrics in acute pancreatitis. METHODS: In 41 patients with acute pancreatitis undergoing MRI/MRCP with DWI, 3D-volumes-of-interest encompassing the entire pancreas were placed to derive whole-pancreas histogram ADC metrics. RESULTS: There were trends toward higher 0-10th percentile ADC, higher 10-25th percentile ADC, lower skewness, and higher kurtosis in patients with new complications (p=0...
December 21, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/28012358/cystic-metastatic-lymph-nodes-in-malignant-melanoma-a-case-report
#3
Eralda Mema, Emma Cho, Richard Ha, Bret Taback
Melanoma is a rare type of skin cancer with a high mortality rate. Local invasion and metastatic spread are primarily responsible for the morbidity and mortality of melanoma. While metastatic lesions vary from cystic to solid, cystic metastases can be challenging to diagnose. Up to date, there are only a few published studies that describe cystic metastases in melanoma and other conditions such as lymphoma, squamous cell carcinoma and thyroid papillary carcinoma. We describe a case of cystic metastatic axillary lymph nodes in a patient with subungual acral lentiginous melanoma and the challenges to reaching an accurate diagnosis...
December 15, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/28012357/comparison-of-2d-single-shot-turbo-spin-echo-and-spin-echo-echo-planar-diffusion-weighted-brain-mri-at-3-0-tesla-preliminary-experience-in-children
#4
Amber L Pokorney, Jeffrey H Miller, Houchun H Hu
PURPOSE: To qualitatively compare a 2D single-shot turbo-spin-echo (ssTSE) diffusion-weighted imaging MRI technique with a spin-echo echo-planar imaging (SE-EPI) approach in pediatric neuroimaging. METHODS: Images were acquired at 3T in 15 patients (10.6±6.0years). A neuroradiologist rated the data based on the severity of image artifacts from air-tissue interfaces and devices such as ventriculoperitoneal shunts and orthodontia, and whether their presence affected diagnostic image quality...
December 15, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/27955982/corrigendum-to-sonographic-evaluation-of-inguinal-lesions-clin-imaging-40-2016-949-955
#5
Hwi Ryong Park, Sung Bin Park, Eun Sun Lee, Hyun Jeong Park
No abstract text is available yet for this article.
December 9, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/27987478/relevance-of-focal-osseous-uptake-on-fdg-pet-with-or-without-ct-changes-in-oncology-patients
#6
Gunjan Garg, Raphaella DaSilva, Mimi Kim, Charito Love, Tony Abraham
OBJECTIVE: To assess significance of focal FDG uptake in osseous structures, with and without CT correlate, in patients undergoing FDG PET/CT for oncological indications. METHODS: 57 patients with focally increased FDG activity in bones and a definite follow up were included. RESULTS: 85.2% of lesions without changes were found to be malignant. Sensitivity and PPV of a CT correlate in metastatic lesions was expectedly high, 62.9% and 86.7% respectively, however, the NPV was only 14...
December 7, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/28064140/reduced-radiation-dose-and-improved-image-quality-using-a-mini-mobile-digital-imaging-system-in-a-neonatal-intensive-care-unit
#7
Tae-Hoon Kim, Jong-Hyun Ryu, Chang-Won Jeong, Hong Young Jun, Dong-Woon Heo, Seung Hyun Lee, Yeon Kyun Oh, Mi-Jung Lee, Kwon-Ha Yoon
This study was aimed to assess the radiation dose and image quality of a mini-mobile digital imaging (mini-DI) system for neonatal chest radiography and compared to conventional digital radiography (DR). A total of 64 neonates were examined and anatomical landmarks were assessed. The entrance surface dose of mini DI and conventional DR was 26.64±0.15 μGy and 49.11±1.46 μGy, respectively (p<0.001). The mean SNR values for mini-DI and DR were 233.2±5.1 and 31.6±1.2, and 10% MTF values were 131 and 161μm...
December 6, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/28063355/orbital-oncocytoma-evaluation-with-dynamic-contrast-enhanced-magnetic-resonance-imaging-using-a-time-signal-intensity-curve-and-positive-enhancement-integral-images
#8
Nutchawan Jittapiromsak, Ping Hou, Michelle D Williams, T Linda Chi
Oncocytomas, which are benign epithelial tumors filled with abundant mitochondria, arise from ductal cells. Oncocytomas rarely occur in the orbit. We present a case of pathologically proven orbital oncocytoma of the lacrimal gland studied by dynamic contrast-enhanced magnetic resonance imaging (DCE MRI). DCE MRI has potential as an adjunct to conventional MRI in the differential diagnosis and tumor margin delineation of orbital oncocytoma. Simple assessments of the time-signal intensity curve, semiquantitative parameters, and post-processing positive enhancement integral images should be considered in the evaluation of orbital masses found on MRI...
December 6, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/27951458/clinical-applicability-and-relevance-of-fibroglandular-tissue-segmentation-on-routine-t1-weighted-breast-mri
#9
Akshat C Pujara, Artem Mikheev, Henry Rusinek, Harikrishna Rallapalli, Jerzy Walczyk, Yiming Gao, Chloe Chhor, Kristine Pysarenko, James S Babb, Amy N Melsaether
PURPOSE: To evaluate clinical applicability of fibroglandular tissue (FGT) segmentation on routine T1 weighted breast MRI and compare FGT quantification with radiologist assessment. METHODS: FGT was segmented on 232 breasts and quantified, and was assessed qualitatively by four breast imagers. RESULTS: FGT segmentation was successful in all 232 breasts. Agreement between radiologists and quantified FGT was moderate to substantial (kappa=0...
December 6, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/27936419/unexplained-gastrointestinal-bleed-due-to-arteriobiliary-fistula-after-percutaneous-liver-biopsy
#10
John Smirniotopoulos, Paul Barone, Marc Schiffman
We represent a case of a 54-year-old male who presented to the emergency department with right upper quadrant abdominal pain and melena three weeks after percutaneous liver biopsy. He was found to have anemia secondary to an upper gastrointestinal hemorrhage, unresponsive to multiple blood transfusions. Angiography later revealed an arteriobiliary fistula with contrast extravasation entering the duodenum. The fistula was successfully embolized and the patient was discharged without complication. This report demonstrates the importance in considering a vascular intrahepatic fistula in patients with right upper quadrant abdominal pain after remote liver biopsy...
December 5, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/27951457/radiologic-assessment-of-fetal-tracheal-balloon-occlusion
#11
Eric J Jordan, Vickie A Feldstein, Willieford Moses, Andrew S Phelps
Fetal endoscopic tracheal occlusion (FETO) is a novel technique to treat cases of isolated severe congenital diaphragmatic hernia (CDH). Although there are benefits of MRI over ultrasound in assessing lung volumes, it is unknown whether there are benefits of MRI for localizing the tracheal balloon. This is a retrospective study reviewing the imaging characteristics of FETO in patients who underwent both MRI and ultrasound exams done to localize tracheal balloons.
December 1, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/28012356/radiogenomic-evaluation-of-lung-cancer-are-there-imaging-characteristics-associated-with-lung-adenocarcinomas-harboring-braf-mutations
#12
Darragh F Halpenny, Andrew Plodkowski, Gregory Riely, Junting Zheng, Anya Litvak, Chaya Moscowitz, Michelle S Ginsberg
INTRODUCTION: We studied computed tomography (CT) features associated with BRAF mutated lung cancer. MATERIALS AND METHODS: CT features of BRAF mutated lung cancers were compared to stage matched lesions without BRAF mutation. RESULTS: 47 (25%) patients with BRAF mutation and 141 (75%) without BRAF mutation were included. BRAF lesions were most frequently solid 37 (84%), spiculated 22 (50%), and peripheral 37 (84%). No feature of the primary tumor was significantly different between BRAF and non-BRAF groups...
November 30, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/27936420/myofibroblastoma-of-the-male-breast-a-rare-entity-with-radiologic-pathologic-correlation
#13
John D Comer, Xiaoyan Cui, Carolyn Sharyn Eisen, Genevieve Abbey, Elizabeth Kagan Arleo
A 73-year old man with a history of multiple genitourinary malignancies was found to have a left retroareolar soft tissue mass on CT assessment of disease, and dedicated breast imaging was recommended. Diagnostic mammography and ultrasonography confirmed a solid mass, for which biopsy was recommended. Pathologic analysis demonstrated a spindle cell neoplasm with an immunoreactivity pattern consistent with myofibroblastoma. While this entity is benign, nonspecific imaging features necessitate tissue sampling for pathologic diagnosis, and, given pathologic rarity, open communication between the radiologist and pathologist is important to establish the correct diagnosis and to recommend appropriate management...
November 30, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/27951459/fdg-pet-mr-in-initial-staging-of-sarcoma-initial-experience-and-comparison-with-conventional-imaging
#14
Ivan Platzek, Bettina Beuthien-Baumann, Georg Schramm, Jens Maus, Michael Laniado, Jörg Kotzerke, Jörg van den Hoff, Markus Schuler
OBJECTIVE: To assess the feasibility of positron emission tomography/magnetic resonance imaging (PET/MR) with 18F-fluordeoxyglucose (FDG) for initial staging of sarcoma. MATERIALS AND METHODS: Twenty-nine patients with sarcoma were included in this study. Weighted kappa (κ) was used to assess the agreement between PET/MR and conventional imaging (CT and MR). The accuracy of PET/MR and conventional imaging for distant metastases was compared using receiver operating characteristic (ROC) analysis...
November 29, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/27936421/catheter-directed-endovascular-application-of-thrombin-report-of-3-cases-and-review-of-the-literature
#15
Majid Maybody, David C Madoff, Raymond H Thornton, Steven A Morales, Chaya S Moskowitz, Meier Hsu, Lynn A Brody, Karen T Brown, Anne M Covey
PURPOSE: To report 3 new cases of catheter-directed endovascular application of thrombin and explore trends by analysis of published case series. MATERIALS AND METHODS: Institutional Review Board approved this retrospective study. All cases of non-tumoral arterial embolization performed from January 2003 to January 2015 at our institution were retrospectively reviewed. Thrombin was used in 7 of 589 cases. In 3 cases intra arterial thrombin was injected via catheter to treat active hemorrhage...
November 29, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/27919009/successful-percutaneous-ct-guided-microwave-ablation-of-adrenal-gland-for-ectopic-cushing-syndrome
#16
Rebecca Zener, Andrew Zaleski, Stan H Van Uum, Daryl K Gray, Amol Mujoomdar
Adrenocorticotropic hormone production by pancreatic neuroendocrine tumor (PNET) is rare and results in hyperstimulation of the adrenal gland to produce ectopic Cushing syndrome. Our case showcases the safety and effectiveness of percutaneous CT-guided microwave ablation of the adrenal gland in a 49-year-old female with PNET and hepatic metastases who presented with ectopic Cushing syndrome despite surgical resection of the primary pancreatic tumor and left adrenal gland. Prior to ablation, the right adrenal gland measured 4...
November 29, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/27894010/a-magnetic-resonance-imaging-study-of-abnormalities-of-the-patella-and-patellar-tendon-that-predispose-children-to-acute-patellofemoral-dislocation
#17
Barış Yılmaz, Esin Derin Çiçek, Evrim Şirin, Güzelali Özdemir, Özgün Karakuş, Hasan Hilmi Muratlı
This study compared 20 children hospitalised with acute patellofemoral dislocation with an age-matched healthy control group with no history of knee problems or patellar dislocation. The following morphological parameters were significantly different between the groups: the mean patellar width and length, mean sulcus depth, mean patellar tendon width and total patellar volume. The magnetic resonance imaging findings of this study suggested that structurally smaller than normal patella and patellar tendon volumes are predisposing factors for acute patellofemoral dislocation...
November 17, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/27889679/radiographic-assessment-of-the-postoperative-knee
#18
REVIEW
Yara Younan, Philip Kin-Wai Wong, Jean Jose, Ty Subhawong, Michael Baraga, Monica Umpierrez, Adam Daniel Singer
Radiologists often encounter postoperative knee radiographs lacking any adjunct clinical data which might hinder accurate image interpretation. Surgical techniques are constantly evolving with new devices being used which make it sometimes challenging for the radiologist to deduce the performed procedure and to look for associated complications. This article reviews commonly performed surgical procedures of the knee, highlights their expected postoperative radiographic appearance and describes the appearance of certain postoperative complications...
November 17, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/27886609/utility-of-virtual-touch-quantification-in-the-diagnosis-of-pancreatic-ductal-adenocarcinoma
#19
Takumi Onoyama, Masahiko Koda, Yuki Fujise, Tomoaki Takata, Soichiro Kawata, Toshiaki Okamoto, Kennichi Miyoshi, Tomomitsu Matono, Takaaki Sugihara, Kazuya Matsumoto, Koichiro Kawaguchi, Kenichi Harada, Kazuo Yashima, Hajime Isomoto
This study aimed to compare the tissue stiffness of pancreatic ductal adenocarcinoma (PDAC) with that of pancreatic parenchyma using virtual touch quantification (VTQ). SWV was measured in 34 PDAC lesions and in pancreatic parenchyma of both controls and patients. SWVs in PDAC lesions were significantly higher than in pancreatic parenchyma in both healthy controls and in patients with PDAC. The area under the ROC for diagnosis of PDAC was 0.94 for pancreatic parenchyma in healthy controls, and 0.85 for pancreatic parenchyma in patients with PDAC...
November 17, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/27875762/review-of-clinical-studies-and-first-clinical-experiences-with-a-commercially-available-cone-beam-breast-ct-in-europe
#20
REVIEW
Susanne Wienbeck, Joachim Lotz, Uwe Fischer
The dedicated cone-beam breast computed tomography (CBBCT) is a new and promising imaging modality which provides isotropic, 3D images of the breast with high spatial and contrast resolution. Non-contrast and contrast-enhanced CBBCT (CE-CBBCT) was superior to mammography for the visualization of breast masses, especially in patients with dense breast tissue. CE-CBBCT accurately detects DCIS and distinguishes it from benign causes of microcalcifications when compared with non-contrast CBBCT and mammography. The purpose of this report is to describe the technology and its possible indications, and to present the first results from recent clinical studies, illustrating these with our own image examples...
November 17, 2016: Clinical Imaging
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