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Journal of Computer Assisted Tomography

Kun Li, Ruiying Yan, Huan Ma, Da-Fu Zhang, Yingying Ding, Zhen-Hui Li
OBJECTIVE: The aim of the study was to assess the value of cinematic rendering (CR) from volumetric computed tomography data in evaluating the relationship between deep soft tissue sarcomas (STSs) of the extremities and the adjacent major vessels. METHODS: Preoperative contrast-enhanced axial imaging (CEAI) in the arterial phase with three-dimensional volume rendering (VR) and CR of contrast-enhanced computed tomography were used to assess adjacent vascular invasion in 43 cases of deep STSs of the extremities...
March 27, 2019: Journal of Computer Assisted Tomography
Gökhan Polat, Hayri Oğul, Ahmet Yalcin, Kutsi Tuncer, Serhat Kaya, Berhan Pirimoğlu, Recep Sade, Mecit Kantarci
OBJECTIVE: We investigated whether preglenoid fat thickness can be used as an ancillary sign for preliminary diagnosis of Bankart and its variants on nonarthrographic magnetic resonance imaging. MATERIALS AND METHODS: Sixty-eight anterior dislocation patients were included in this retrospective study. Forty-eight patients with Bankart and its variants, as detected by arthroscopy and magnetic resonance arthrography, were included in the study group. The study group was divided into osseous Bankart, labral Bankart, Perthes, and anterior labroligamentous periosteal sleeve avulsion subgroups...
March 25, 2019: Journal of Computer Assisted Tomography
Ailan Cheng, Rong Yao, Wenjun Cao, Hong Yu
OBJECTIVE: The aims of this study were to describe the brain magnetic resonance imaging (MRI) features of methylmalonic aciduria and homocystinuria and to evaluate the additional value of H-MRS. PATIENTS AND METHODS: Twenty-eight children with methylmalonic aciduria and homocystinuria were included in this study. The control group included 21 healthy children. All the cases underwent MRI and H-MRS before treatment. We measured the N-acetylaspartate (NAA), choline (Cho), creatine (Cr), and myoinositol (mI) peaks in the basal ganglia regions...
February 28, 2019: Journal of Computer Assisted Tomography
Maciej Guziński, Konrad Kubicki, Łukasz Waszczuk, Monika Morawska-Kochman, Andrzej Kochman, Marek Sąsiadek
PURPOSE: The aim of the study was to assess potential endoprosthesis loosening in patients after revision total hip arthroplasty, based on monochromatic dual-energy computed tomography (DECT) images obtained with and without metal artifact reduction software (MARS) and comparison with the clinical examination and hip function. MATERIALS AND METHODS: Twenty-five consecutive patients underwent DECT examinations. Two monochromatic data sets were generated: with MARS (75-keV MARS) and without MARS (140-keV non-MARS) and evaluated for signs of loosening, using a dedicated radiological score...
February 27, 2019: Journal of Computer Assisted Tomography
Mecit Kantarci, Hayri Ogul, Recep Sade, Enbiya Aksakal, Abdurrahim Colak, Ibrahim Halil Tanboga
OBJECTIVE: The purpose of this study was to assess the diagnostic performance of prone position cardiac multidetector computed tomography (MDCT) in the detection of left atrial appendage (LAA) thrombi and to make differentiate between thrombus and circulatory stasis using transesophageal echocardiography (TEE) as the criterion-standard imaging modality. METHODS: From December 2014 to April 2016, 53 consecutive patients were admitted to the hospital because of circulatory stasis or/and thrombus...
February 20, 2019: Journal of Computer Assisted Tomography
Nicolas Gillingham, Hersh Chandarana, Amita Kamath, Hiram Shaish, Nicole Hindman
OBJECTIVE: The aim of this study was to determine which apparent diffusion coefficient-derived texture features are associated with malignancy in Bosniak IIF and III renal cystic lesions. METHODS: Twenty benign and 7 malignant Bosniak IIF (22) or III (5) renal cysts, as evaluated with magnetic resonance imaging, were assessed for progression to pathology-confirmed malignancy. Whole-cyst volumes of interest were manually segmented from apparent diffusion coefficient maps...
February 20, 2019: Journal of Computer Assisted Tomography
Domenico Albano, Vito Chianca, Marcello Zappia, Raffaele Russo, Stefania Romano, Luca Maria Sconfienza, Francesco Di Pietto
Several complications may be encountered after rotator cuff (RC) repair. A thorough knowledge of surgical interventions, normal postoperative findings, and postoperative complications is crucial to provide a timely diagnosis, improving the clinical outcome of patients. Postoperative complications may involve RC, implanted device, osteochondral tissue, surgical-site infection, peripheral nerves, soft tissues, and vascular structures. In this review, we discuss the usual and unusual complications detectable after RC repair...
February 20, 2019: Journal of Computer Assisted Tomography
Delaram Shakoor, Nima Hafezi-Nejad, Arya Haj-Mirzaian, Jaimie T Shores, Scott D Lifchez, John N Morelli, Uma Thakur, Shadpour Demehri
PURPOSE: The aim of this study was to determine the normal measurement values and interobserver performance of the distal radioulnar joint during wrist pronation-supination using 4-dimensional computed tomography (CT). METHODS: Four-dimensional CT examinations were performed on the asymptomatic contralateral wrists of 10 patients with unilateral chronic wrist pain. Measurements were conducted using the modified radioulnar (mRU) line and epicenter (Epi) methods. Volar subluxation of the ulnar head was demonstrated with negative values...
February 11, 2019: Journal of Computer Assisted Tomography
Thibaut Dubreuil, Jérôme Mouly, Aïcha Ltaief-Boudrigua, Amanda Martinon, Stéphane Tilhet-Coartet, Karim Tazarourte, Jean-Baptiste Pialat
OBJECTIVES: The aims of this study were to evaluate the agreement between cone-beam computed tomography (CBCT) and multislice computed tomography for the characterization of extremity fractures and to compare image quality, radiation dose, and patient tolerance. METHODS: Thirty-six patients with suspected fracture affecting distal extremities or who required preoperative fracture assessment were enrolled prospectively. Each patient underwent CBCT and multislice computed tomography the same day...
February 11, 2019: Journal of Computer Assisted Tomography
Xin Li, Michael Enzerra, Daniel Arnold Smith, Amir Ata Rahnemai-Azar, Elias Kikano, Nikhil H Ramaiya
Until recently, the treatment of small cell lung cancer (SCLC), a malignancy classically described as having a robust response to first-line therapy with near-universal recurrence, has remained relatively unchanged. Advancements in the management of SCLC have lagged behind those seen for non-small cell lung cancers. As the era of precision medicine and targeted immunotherapy evolves, radiologists must be familiar with the modern treatment paradigms of SCLC and associated imaging patterns, including classic and nonclassic appearances of treatment complications...
February 11, 2019: Journal of Computer Assisted Tomography
Ahmed Abdel Khalek Abdel Razek, Mahmoud Thabet, Eman Abdel Salam
PURPOSE: This study aimed to assess apparent diffusion coefficient (ADC) of the placenta and fetal organs in intrauterine growth restriction (IUGR). MATERIALS AND METHODS: A prospective study of 30 consecutive pregnant women (aged 21-38 years with mean age of 31.5 years and a mean gestational week of 35 ± 2.3) with IUGR and 15 age-matched pregnant women was conducted. All patients and controls underwent diffusion-weighted magnetic resonance imaging. The ADCs of the placenta and fetal brain, kidney, and lung were calculated and correlated with neonates needing intensive care unit (ICU) admission...
February 11, 2019: Journal of Computer Assisted Tomography
Takanori Masuda, Takeshi Nakaura, Yoshinori Funama, Tomoyasu Sato, Tomokazu Okimoto, Noritaka Noda, Yoriaki Matsumoto, Yukari Yamashita, Naoyuki Imada, Kazuo Awai
OBJECTIVE: The aim of this study was to compare the diagnostic performance of 100- and 120-kVp coronary computed tomography (CT) angiography (CCTA) scans for the identification of coronary plaque components. METHODS: We included 116 patients with coronary plaques who underwent CCTA and integrated backscatter intravascular ultrasound studies. On 100-kVp scans, we observed 24 fibrous and 24 fatty/fibrofatty plaques; on 120-kVp scans, we noted 27 fibrous and 41 fatty/fibrofatty plaques...
February 11, 2019: Journal of Computer Assisted Tomography
Yixing Yu, Ximing Wang, Cen Shi, Su Hu, Hui Zhu, Chunhong Hu
OBJECTIVE: The aim of this study was to explore the value of spectral computed tomography (CT) imaging in differentiating lung cancer from inflammatory myofibroblastic tumor (IMT). METHODS: One hundred twelve patients with 96 lung cancers and 16 IMTs underwent spectral CT during arterial phase (AP) and venous phase (VP). The normalized iodine concentration in AP (NICAP) and VP (NICVP), slope of spectral Hounsfield unit curve in AP (λAP) and VP (λVP), and normalized iodine concentration difference between AP and VP (ICD) were calculated...
February 11, 2019: Journal of Computer Assisted Tomography
Amanda M Dimmitt, Jessica A Pelz, Megan E Albertson, Kaeli K Samson, Lyudmila M Muinov, Jennifer M Oliveto, Neil J Hansen
OBJECTIVE: The aim of the study was to evaluate diagnostic accuracy and readers' experience in the detection of focal liver lesions on computed tomography with Adaptive Statistical Iterative Reconstruction-V (ASIR-V) reconstruction compared with filtered back projection (FBP) scans. METHODS: Fifty-five patients with liver lesions had FBP and ASIR-V scans. Two radiologists independently reviewed both sets of computed tomography scans, identifying and characterizing liver lesions...
February 11, 2019: Journal of Computer Assisted Tomography
Aida Vehabovic-Delic, Marija Balic, Christopher Rossmann, Thomas Bauernhofer, Hannes A Deutschmann, Helmut Schoellnast
INTRODUCTION: The aim of this study was to assess the significance of volume computed tomography perfusion imaging of metastasizing renal cell carcinoma (mRCC) in the early period after the initiation of targeted therapy. METHODS: Blood flow (BF), blood volume, and clearance (CL) were calculated in 10 patients with histologically verified mRCC before and 1 month after initiation of targeted therapy using compartmental analysis algorithms. In addition, the longest diameter of tumor was measured for both time points and compared...
February 11, 2019: Journal of Computer Assisted Tomography
Bolun Lu, Hao Wang, Qing Lu, Zhengya Tang, Hongjing Dou, Tingting Dai, Shengli Li
OBJECTIVES: To assess the applicability of a novel hybrid dextran-gadolinium nanoparticles (NPs) as high-relaxivity T1 magnetic resonance imaging (MRI) contrast agent for mapping the sentinel lymph node (SLN). METHODS: Dextran-bis-acrylamide-polyacrylic acid (Dex-MBA-PAA) NPs were synthesized through a self-assembly assisted approach and complexed with multiple chelated gadolinium (Gd) (III) ions. After their characterization was validated, they were used to mapping SLNs by MRI in Wistar rats, and their biosafety was evaluated...
March 2019: Journal of Computer Assisted Tomography
Hong Seon Lee, Won Jun Kang, Nam Hoon Cho, Sung Yoon Park
PURPOSE: We evaluated patterns of thoracic recurrence from renal cell carcinoma (RCC) following nephrectomy as a pilot study. METHODS: Data of consecutive 39 patients who had recurrent RCC in the abdomen or thorax following curative nephrectomy were evaluated. Recurrence sites were analyzed with abdomen and chest computed tomography (CT), or positron emission tomography/CT. All patients had no metastasis before initial nephrectomy. Recurrence was classified into 3 types according to the site of initially detected recurrence: (a) abdomen-only type, (b) abdomen and thorax type, and (c) thorax-only type...
March 2019: Journal of Computer Assisted Tomography
Bo Bae Choi, Sung Hun Kim, InKyung Youn
OBJECTIVE: The aim of the study was to evaluate the magnetic resonance imaging findings associated with clinicopathologic factors in patients with triple-negative breast cancer. METHODS: One hundred one patients with surgically confirmed triple-negative breast cancer who underwent preoperative breast magnetic resonance imaging with diffusion-weighted imaging (DWI) were included in this study. Presence of rim enhancement on contrast-enhanced T1-weighted imaging and hyperintense rim on DWI were visually assessed...
January 17, 2019: Journal of Computer Assisted Tomography
Xin Xu, Xuening Zhang
OBJECTIVE: The aim of this study was to investigate the potential of intravoxel incoherent motion diffusion-weighted imaging in diagnosing hilar obstructive jaundice. METHODS: Fifty-nine patients diagnosed with hilar obstructive jaundice were enrolled in our hospital form January 2017 to January 2018. All the patients received scanning by a 3.0-T nuclear magnetic resonance scanner. The values of apparent diffusion coefficient (ADC)slow, ADCfast, and f were obtained and analyzed by 2 experienced radiologists...
January 17, 2019: Journal of Computer Assisted Tomography
Ruth P Lim, Susan G Singh, Emma Hornsey, Leighton Kearney, Leonid Churilov, Pippa Storey, Mark Begbie, Jennifer Shoobridge, Jian Xu, Melanie Rayner, George Matalanis, Gerard Smith
OBJECTIVE: The aim of this study was to evaluate agreement of measured thoracic aortic caliber in patients with aortic disease, using electrocardiographically-(ECG) and pulse-gated breath-hold noncontrast balanced steady-state free precession MRA (ECG-MRA, P-MRA) at 1.5 T, compared with ECG-gated computed tomographic angiography (CTA). METHODS: Thirty-one patients underwent ECG-MRA, P-MRA, and CTA. Two readers independently measured aortic caliber in 7 segments, with agreement between techniques and readers evaluated...
January 17, 2019: Journal of Computer Assisted Tomography
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