Clinical Imaging | Page 2

Susan C Lee, Christian S Geannette, Darryl B Sneag
OBJECTIVE: Long thoracic neuropathy results in serratus anterior muscle denervation and presents with scapular winging. Previously published studies have been unable to identify the long thoracic nerve on MRI; instead, secondary imaging features of serratus anterior muscle denervation are used to infer nerve injury. Our study's purpose was to evaluate the ability of high-resolution MRI to depict the long thoracic nerve. MATERIALS AND METHODS: In this HIPAA-compliant, IRB-approved retrospective study, two musculoskeletal radiologists reviewed the brachial plexus MRI exans of 24 subjects performed for clinical suspicion of long thoracic neuropathy...
April 25, 2020: Clinical Imaging
Mahinur Cerit, Halit Nahit Şendur, Emetullah Cindil, Gonca Erbaş, Mehmet Muhittin Yalçın, Ethem Turgay Cerit, Seriyye Allahverdiyeva, Suna Özhan Oktar, Cem Yücel
PURPOSE: To evaluate the efficacy of attenuation measurement function (ATT), a newly developed quantitative ultrasonography(US) method based on measurement of the attenuation coefficient, using unenhanced computerized tomography(CT) attenuation values as a reference standard, for the detection and measurement of hepatosteatosis. MATERIAL AND METHODS: A total of 98 patients were analyzed. The diagnostic ability of ATT was evaluated using receiver operating characteristic (ROC) curve analysis, and the correlation between liver attenuation index (LAI), the liver-to-spleen attenuation ratio (CTL/S ), liver attenuation value (CTL ), and ATT was determined...
April 25, 2020: Clinical Imaging
Dae-Hwan Kim, Seong-Jang Kim
PURPOSE: Although ultrasonography (US) is a standard technique for the assessment of cervical lymph node (LN) metastasis, the role of F-18 fluorodeoxyglucose (FDG) positron emission tomography-computed tomography (PET-CT) is increasingly reported. The purpose of this study is to assess the diagnostic accuracy of F-18 FDG PET-CT for detection of cervical LN metastasis in thyroid cancer (TCa) patients through a meta-analysis. PATIENTS AND METHODS: The PubMed, Cochrane Database, and Embase from the earliest available date of indexing through September 31, 2019, were searched for studies evaluating the diagnostic performance of F-18 FDG PET-CT for detection of LN metastasis in TCa...
April 25, 2020: Clinical Imaging
Chen Lin, Zixian Chen, Bin Xie, Zhujian Sun, Yuxiao Ding, Xiaogang Li, Meng Niu, Shunlin Guo, Junqiang Lei
The purpose of this case report is to describe the radiographic and clinical features of a COVID-19 pneumonia patient without clear epidemiological history outside Wuhan, China.
April 24, 2020: Clinical Imaging
Simukayi Mutasa, Shawn Sun, Richard Ha
Artificial intelligence (AI) is a broad umbrella term used to encompass a wide variety of subfields dedicated to creating algorithms to perform tasks that mimic human intelligence. As AI development grows closer to clinical integration, radiologists will need to become familiar with the principles of artificial intelligence to properly evaluate and use this powerful tool. This series aims to explain certain basic concepts of artificial intelligence, and their applications in medical imaging starting with a concept of overfitting...
April 23, 2020: Clinical Imaging
Vibhor Wadhwa, Osman Ahmed, Mark L Lessne, Robert K Ryu, Premal S Trivedi
No abstract text is available yet for this article.
April 22, 2020: Clinical Imaging
Lele Huang, Jian Jiang, Xiaoping Li, Yonghuai Zhou, Mingjun Xu, Junlin Zhou
The objective of this report is to better understand the initial CT imaging spectrum and the relationship between clinical characteristics and initial CT imaging features of an imported family cluster cases involving 7 laboratory-confirmed COVID-19 patients. We find that initial CT findings of 4 patients were positive within one week after the onset of symptoms and 1 patient was negative before the onset of symptoms. Two asymptomatic patients had typical CT abnormalities. The initial CT imaging manifestations are mainly peripheral or subpleural ground-glass opacities and ground-glass with consolidation...
April 22, 2020: Clinical Imaging
Isaac Levine, Kevin Kalisz, Daniel A Smith, Sree Harsha Tirumani, Nikhil H Ramaiya, Francesco Alessandrino
Recent advances in the management of Hodgkin lymphoma, due to new staging and response assessment systems as well as new therapies, have redefined the role of imaging for this disease. The purpose of this article is to provide radiologists with an update on the current role of imaging in Hodgkin lymphoma from diagnosis to assessment of treatment response, in view of the new staging and response assessment system and current treatment strategies.
April 22, 2020: Clinical Imaging
Daniel M O'Mara, Alexandra J Berges, Jan Fritz, Clifford R Weiss
PURPOSE: Venous malformations (VMs) are low-flow vascular anomalies that are commonly treated with image-guided percutaneous sclerotherapy. Although many VMs can be safely accessed and treated using ultrasonography and fluoroscopy, some lesions may be better treated with magnetic resonance imaging (MRI)-guided sclerotherapy. The aim of this study is to evaluate the feasibility, efficiency, and outcomes of MRI-guided sclerotherapy of VMs using a 3T MRI system. METHODS: Six patients with VMs in the neck (n = 2), chest (n = 1), and extremities (n = 3) underwent sclerotherapy with 3T MRI guidance...
April 22, 2020: Clinical Imaging
Mirjan M Nadrljanski, Zorica C Milosevic
PURPOSE: Texture analysis (TA) parameters (variance of SI, mean of gradient, variance of gradient, kurtosis of SI, and entropy) in patients with invasive ductal carcinoma (IDC) contribute to objective assessment of neoadjuvant chemotherapy (NACT) activity. The objective was to assess TA parameters in early identification of non-responders (NR) in NACT, after the 2nd cycle of NACT. MATERIAL AND METHODS: Fifty patients (N = 50) were included in the retrospective analysis of baseline and MRI following the 2nd cycle of NACT...
April 21, 2020: Clinical Imaging
Maha Ibrahim Metwally, Nader Ali Alayouty, Mohammad Abd Alkhalik Basha
Ear malformations represent 50% of ear, nose and throat malformations. Ear malformations cause conductive hearing loss (CHL) and/or sensorineural hearing loss (SNHL) with a significant childhood disability worldwide. Early accurate diagnosis and treatment are mandatory to enhance language and speech development. Understanding the embryology of the ear explains the outcome of ototoxic prenatal insult according to the affected gestational age and the incidence of association among inner, middle, and external ear malformations...
April 20, 2020: Clinical Imaging
Lu Li, Gang Liu, Li Zhu, Tao Li
We present a rare case of primary diffuse large B-cell lymphoma of the thoracic vertebra in a patient with metastatic lung cancer.
April 20, 2020: Clinical Imaging
Agata Durawa, Katarzyna Dziadziuszko, Małgorzata Jelitto-Górska, Edyta Szurowska
Emphysema is one of three main lung pathologies in Chronic Obstructive Pulmonary Disease, along with chronic bronchitis and small airway obstruction. The diagnosis is based on detection of low attenuation areas in lung tissue on chest Computed Tomography, either visual by a radiologist, or automatic by the applied Computed Tomography software. Results of the studies on the association between emphysema and lung cancer incidence are mixed. Many studies have demonstrated, that chronic lung diseases, like Chronic Obstructive Pulmonary Disease, are associated with lung cancer morbidity...
April 20, 2020: Clinical Imaging
Omar S Al-Kadi
PURPOSE: To investigate whether the FD of non-small cell lung cancer (NSCLC) on CT predicts tumor stage and uptake on 18 F-fluorodeoxyglucose positron emission tomography. MATERIAL AND METHODS: The FD within a tumor region was determined using a box counting algorithm and compared to the lymph node involvement (NI) and metastatic involvement (MI) and overall stage as determined from PET. A Mann-Whitney U test was applied to the extracted FD features for the NI and the MI...
April 20, 2020: Clinical Imaging
Justin T Stowell, Jennifer R Buckley, Gautam Balakrishnan, Gary A Salzman, James R Stewart, Lawrence R Ricci, Stephanie A Scott
No abstract text is available yet for this article.
April 19, 2020: Clinical Imaging
Kris Tantillo, R Joshua Dym, Victoria Chernyak, Meir H Scheinfeld, Benjamin H Taragin
Upper gastrointestinal obstruction (UGIO), obstruction occurring at the level of the stomach or duodenum, represents only about 5% of bowel obstructions. As with other bowel obstructions, timely diagnosis is necessary to prevent complications including ischemia and death. Because the presenting symptoms of UGIO can be vague and nonspecific, the diagnosis may not be suspected clinically. The radiologist therefore provides immense value as the diagnosis and often the etiology of the obstruction can be ascertained through imaging...
April 19, 2020: Clinical Imaging
Rahul Chaturvedi, Grace Y Lin, Wilbur Wang, Edward Smitaman
Osteochondromas, the most common benign bone tumor, are typically asymptomatic and discovered incidentally by imaging. Most frequently, osteochondromas occur at the metaphyses of long bones, and rarely involve the head and neck. We report the first case of a symptomatic osteochondroma of the temporal styloid process causing facial nerve paralysis.
April 19, 2020: Clinical Imaging
Steven R Horbal, Andrea H Rossman, Edward Brown, Nidhi V Shah, Brian E Ross, Aurelian Bidulescu, June A Sullivan, Grace L Su, Stewart C Wang
BACKGROUND: Screening of cardiovascular risk is essential in preventing cardiac events and quantifying asymptomatic risk. Coronary artery calcium (CAC) scores are a well-established in predicting cardiovascular risk, but require specialized computed tomography (CT) scans. Given the relationship of aortic calcification with cardiovascular risk, we sought to determine whether aortic calcification measures from incidental CT scans may approximate CAC. STUDY DESIGN: Retrospective CT scans and corresponding volumetric CAC scores were obtained from patients at the University of Michigan...
April 18, 2020: Clinical Imaging
Ciara M O'Brien, Amy C O'Brien, Laura Gleeson, Kevin Conlon, John Feeney, Dermot E Malone
OBJECTIVES: To review the imaging of patients with Genetically-Mediated Pancreatitis (GMP), identify common imaging findings in this cohort and assess phenotypical characteristics of specific genotypes. MATERIALS AND METHODS: Retrospective review of the databases of the Irish National Surgical Centre for Pancreatic Cancer (NSCPC) and Cystic Fibrosis (CF) from November 2010 to January 2018. Retrospective imaging and chart review for the patients with positive genetics for GMP...
April 18, 2020: Clinical Imaging
Vinay Prabhu, Joanne M Rispoli, Chloe M Chhor, Cecilia L Mercado, Nancy R Fefferman
PURPOSE: Acclimating residents to radiology residency requires attention to new responsibilities, educational material, and social cohesion. To this end, we instituted a structured orientation week for incoming residents and assessed its impact. PROCEDURES: During the first weeks of July 2016 and 2017, first year residents attended a five day orientation free of clinical duties, consisting of didactics, hands-on training sessions, and social events. After two orientation cohorts, residents who completed orientation week, and two cohorts who had not, were given a voluntary, anonymous survey using Likert scale questions (1 [worst] to 5 [best]) regarding preparedness for responsibilities, learning, and social cohesion...
April 18, 2020: Clinical Imaging
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