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Clinical Imaging

Elaine Schattner
No abstract text is available yet for this article.
April 4, 2019: Clinical Imaging
Andrew Zhang, Remy Lobo, Francisco Rivas-Rodriguez, Ashok Srinivasan
Retropharyngeal carotid arteries are a common clinically relevant anatomic variant. "Peripatetic" carotid arteries refer to change in position to and from a retropharyngeal location, and are a newly described finding. Knowledge of this phenomenon is important to avoid potential procedural complications as well as misdiagnosis. We present a unique case of a peripatetic carotid artery simulating a carotid artery dissection during a catheter angiogram and subsequent CT angiogram. To our knowledge, this has never been described in the medical literature...
March 30, 2019: Clinical Imaging
Ashwani Gore, Ranliang Hu, Dhruv Patel, Maria Braileanu, Daniel Hampton, Hena Joshi, Nikhar Kinger, Philip C Louden, John O'Keefe, Stanislav Poliashenko, Michael J Hoch
RATIONALE AND OBJECTIVES: Interpreting functional magnetic resonance imaging (fMRI) can be an overwhelming and challenging task for trainees, particularly when post processing, synthesizing and interpreting data from multiple language paradigms. Currently, there is no established best method for teaching fMRI interpretation to new trainees. The purpose of our study is to compare the use of combined task activation display (CTAD) and conventional display of fMRI language paradigms as an effective method to teach fMRI to the introductory learner...
March 29, 2019: Clinical Imaging
Tumay Bekci, Emre Unal, Ahmet Veysel Polat
PURPOSE: We aimed to describe "T2-hypointense dot sign" for the diagnosis of ovarian torsion and compare its diagnostic capability with whirlpool sign. METHODS: Pelvic MRIs of 31 patients with surgically proven ovarian torsion were used for the analysis. The control group was comprised of 30 patients with adnexal neoplasm and 15 patients with tubo-ovarian abscess. The MRIs of all 76 patients were retrospectively evaluated by two independent radiologists for the presence of T2-hypointense dot sign and whirlpool sign using a three-point scale...
March 26, 2019: Clinical Imaging
Chenguang Zhang, Jianke Li, Mengyue Sun, Shujing Li, Jingyu Li, Quanhai Li, Zhenlong Zhu
PURPOSE: To assess the relationships of subsolid nodules (SSNs) with peripheral vessels and aerated bronchi using computed tomography (CT), and to correlate the imaging features with the benign/malignant pathological diagnoses. METHODS: This study retrospectively analyzed data from 83 patients with a solitary SSN (January 2008 to December 2016). SSNs were imaged (LightSpeed 64-slice spiral CT, General Electric, USA), their mean diameter determined, and the relationship with peripheral vessels (types I-IV) and aerated bronchi (types I-V) were classified...
March 22, 2019: Clinical Imaging
Christoph A Agten, Christoph Metzler, Andrea B Rosskopf, Marco Zanetti, Christoph A Binkert, Elke Prentl, Christian W A Pfirrmann
PURPOSE: To compare changes in the pubic symphysis between women with vaginal delivery and women with caesarean sections within the first postpartum week. MATERIALS AND METHODS: After institutional review board approval 30 healthy women were prospectively examined with MRI (transverse STIR-sequence) three days after delivery. 17 women with vaginal delivery (mean age 33.2 ± 4 years) and 13 with caesarean delivery (35.2 ± 5.6 years) were compared by two musculoskeletal radiologists...
March 19, 2019: Clinical Imaging
Helen S Xu, Elaine Zhong, Jessica Rotman
Juvenile granulosa cell tumor (JGCT) is an extremely rare ovarian tumor that has been associated with Maffucci syndrome. It both secretes hormone and has been postulated to grow in response to hormone. We present a case of a 33-year-old G1P0 asymptomatic woman with a history of Maffucci syndrome found to have a left adnexal mass on routine ultrasonography at 13 weeks gestation. This case demonstrates the sonographic and magnetic resonance imaging (MRI) features of JGCT, as well as the natural progression of the tumor during pregnancy...
March 13, 2019: Clinical Imaging
Steven P Daniels, J Jacob Kazam, Katherine V Yao, Helen S Xu, Daniel B Green
We present two cases of atraumatic costal cartilage fracture secondary to violent coughing. Although costal cartilage fractures due to trauma and bony rib fractures due to violent coughing have been described, to our knowledge there have been no prior reported cases of cough-induced costal cartilage fracture. It is important for radiologists to consider costal cartilage fractures, which are often more subtle than osseous injuries, in patients with chest pain, and understand that they may not always be preceded by direct trauma...
March 13, 2019: Clinical Imaging
Chankue Park, Joon Woo Lee, Yongju Kim, Soyeon Ahn, Eugene Lee, Yusuhn Kang, Heung Sik Kang
OBJECTIVE: To determine the usefulness of adding contrast-enhanced (CE) magnetic resonance imaging (MRI) to conventional MRI for evaluation of spinal metastases. MATERIALS AND METHODS: One-hundred-and-two whole spine MR examinations, obtained for metastasis work-up within a 2-month period, from 65 men and 37 women (mean age, 64 years) with extra-spinal tumor, who also underwent CE-MRI, were retrospectively evaluated by three radiologists. The number of spine segments with bone marrow involvement was interpreted using a 3-point confidence scale (probable metastasis, equivocal, probably benign) during session 1 (conventional imaging) and session 2 (addition of CE-MRI to conventional imaging)...
March 11, 2019: Clinical Imaging
Kye Jin Park, Mi-Hyun Kim, Jeong Kon Kim, Kyoung-Sik Cho
OBJECTIVES: To determine the clinical and histopathologic characteristics of missed prostate cancers and their Prostate Imaging Reporting and Data System version 2 (PI-RADS v2) score on a pre-biopsy MRI and subsequent MR-ultrasound (US) fusion biopsy. METHODS: We analysed 59 prostate cancer patients who underwent a 3-T MRI prior to an MR-US fusion biopsy and subsequent radical prostatectomy. A radiologist initially reviewed these cases to correlate target lesions and pathology-proven lesions...
March 8, 2019: Clinical Imaging
Yonah B Esterson, Marian Gaballah, Gregory M Grimaldi, Micheal H Raj, John S Pellerito
Dermoid cysts, or mature cystic teratomas, are complicated by malignant degeneration in only 1-2% of cases. Rarely, dermoid cysts result in complications of small bowel obstruction or entero-ovarian fistula formation. In the current report we present the case of a 59-year-old female with a known dermoid cyst who presented with leukocytosis and was discovered to have a small bowel obstruction at the level of an ileo-ovarian fistula. The patient was taken to the operating room and was treated with total abdominal hysterectomy, bilateral salpingo-oopherectomy, and short segment small bowel resection...
March 8, 2019: Clinical Imaging
Brinda Rao Korivi, Silvana Faria, Asran Aly, Jia Sun, Madhavi Patnana, Corey T Jensen, Nicolaus Wagner-Bartak, Priya R Bhosale
OBJECTIVE: We assessed differences in primary sites and spread patterns of the intestinal and diffuse subtypes of gastric carcinoma. We also compared survival outcomes based on spread patterns. MATERIALS AND METHODS: For this retrospective IRB-approved study, our institutional imaging database was mined for patients with gastric cancer. We included 99 treatment-naïve patients. Patient demographics, pathologic data, tumor classification, primary tumor site, and metastasis sites were recorded...
March 3, 2019: Clinical Imaging
Yiqing Shen, Fajin Lv, Zhibo Xiao, Qiu Bi
OBJECTIVES: Lymphadenectomy is not recommended for low risk stage I endometrial carcinoma (EC) patients. This study was to investigate the predictive value of apparent diffusion coefficient (ADC) values in predicting patients with low risk EC, and to identify an optimum ADC measurement for preoperative assessment. MATERIALS AND METHODS: Eighty-one patients with stage I EC who underwent diffusion-weighted imaging (DWI) at 1.5T were included and divided into low group and intermediate-high risk group based on the ESMO-ESGO-ESTRO classification...
March 2, 2019: Clinical Imaging
William K Conaway, Ravi Agrawal, Mark R Nazal, John W Stelzer, Scott D Martin
A 54-year old woman with primary osteoarthritis and a tibial bone marrow lesion underwent subchondroplasty with injectable calcium phosphate. Post-operatively, the patient's symptoms worsened, and she lost the ability to bear weight. Follow-up MRI revealed previously absent, diffuse STIR hyperintensity in the tibia extending far beyond the surgical site. Twelve months post-operatively, symptoms spontaneously resolved. As the prevalence of subchondroplasty grows it will be important to recognize potential complications...
February 25, 2019: Clinical Imaging
Sarah Li Hui Tan, Mohamed Badawy, Michal Schneider, Kenneth K Lau, Keat Low, Peter Kutschera
INTRODUCTION: The purpose of this study was to evaluate the radiation dose and image quality of computed tomography urograms (CTU) using tin-filtration compared to conventional CTU (without tin-filtration) examinations in patients with suspected urolithiasis. METHODS: Group 1 consisted of 100 patients who were examined using the tin-filtered CTU protocols (Sn100kVp or Sn150kVp); Group 2 consisted of 100 patients who were examined using the same protocols but without tin-filtration (GE-NI41 or GE-NI43)...
February 22, 2019: Clinical Imaging
Christian A Barrera, Hansel J Otero, Helge D Hartung, David M Biko, Suraj D Serai
OBJECTIVE: To determine the optimal MRI protocol and sequences for liver and cardiac iron estimation in children. METHODS: We evaluated patients ≤18 years with cardiac and liver MRIs for iron content estimation. Liver T2 was determined by a third-party company. Cardiac and Liver T2* values were measured by an observer. Liver T2* values were calculated using the available liver parenchyma in the cardiac MRI. Linear correlations and Bland-Altman plots were run between liver T2 and T2*, cardiac T2* values; and liver T2* on dedicated cardiac and liver MRIs...
February 20, 2019: Clinical Imaging
Shari Friedman, Zina J Ricci, Marjorie W Stein, Ellen L Wolf, Tulay Ekinci, Fernanda S Mazzariol, Mariya Kobi
Colostomies are commonly created in conjunction with colorectal surgery performed for both malignant and benign indications. Familiarity with the different types of colostomies and their normal imaging appearance will improve radiologic detection and characterization of colostomy complications. The radiologist plays a large role in assessment of colostomy patients either via fluoroscopic technique or multidetector computed tomography (CT) in order to help identify ostomy complications or to aid the surgeon prior to colostomy reversal...
February 20, 2019: Clinical Imaging
Ali Er, Nail Uzunlulu, Tevfik Guzelbey, Sevgi Yavuz, Aysel Kiyak, Arda Kayhan
OBJECTIVE: Nutcracker Syndrome (NCS) is the extrinsic compression of the left renal vein by neighboring arterial, ligamentous, muscular, or osseous structures. Diagnosis is made by Doppler ultrasonography (US), multidetector computerized tomography (MDCT), magnetic resonance imaging (MRI), phlebography. The aim of the current study is to assess the value of MRI and compare the efficiency of different sequences in diagnosis and follow up of children with NCS. MATERIAL AND METHODS: A total of 40 children (female/male ratio 3:1) with NCS were included in this prospective study...
February 20, 2019: Clinical Imaging
Yuko Okabe, Takatoshi Aoki, Takashi Terasawa, Shunsuke Kinoshita, Shingo Nakayamada, Yoshiya Tanaka, Yukunori Korogi
BACKGROUND: With recent advances of biological disease-modifying antirheumatic drugs, chest CT has been increasingly performed in rheumatoid arthritis (RA) patients, and mediastinal/axillar lymphadenopathy is being detected. PURPOSE: To determine the prevalence of mediastinal and axillar lymph node enlargements on chest CT in RA patients at the initial diagnosis, and to assess its clinical significance. MATERIAL AND METHODS: We retrospectively reviewed the medical records and chest CT findings of 78 consecutive RA patients...
February 20, 2019: Clinical Imaging
Jeong Hyun Lee, Ji Hye Min, Young Kon Kim, Dong Ik Cha, Jisun Lee, Hyun Jeong Park, Soohyun Ahn
BACKGROUND: Accurate differentiation between pancreatic adenocarcinoma and focal pancreatitis is challenging. PURPOSE: To investigate the usefulness of non-contrast MRI by comparing with multidetector row CT (MDCT) and gadoxetic acid-enhanced MRI in the discrimination of pancreatic ductal adenocarcinoma (PDAC) and focal pancreatitis (FP). MATERIALS AND METHODS: This retrospective study included 187 patients (116 with PDACs and 71 with FP) who underwent gadoxetic acid-MRI and MDCT prior to surgical resection or biopsy...
February 20, 2019: Clinical Imaging
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