Improved Visualization and Identification of the Right Adrenal Vein in 70-kVp Contrast-Enhanced Computed Tomography
Objective The aim of this study was to assess the utility of 70-kilovoltage-peak (kVp) contrast-enhanced computed tomography (CECT) for visualization and identification of the right adrenal vein (RAV) in comparison with that of conventional 120-kVp CECT. Methods This retrospective study included patients who underwent adrenal venous sampling with concurrent biphasic 120-kVp (120-kVp group, n = 43) or 70-kVp (70-kVp group, n = 47) CECT. Signal-to-noise ratios, contrast-to-noise ratios, longitudinal lengths, conspicuity scores, RAV detection rates, and size-specific dose estimates were compared between the 2 groups. Re...
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Abdominal and Whole Body Imaging Source Type: research

Gastrointestinal Air Motion Artifact Which Can Be Mistaken for Active Gastrointestinal Bleeding in Multidetector Computed Tomography: Phantom and Clinical Study
Conclusion Knowing the radiologic features of GIAMA can assists radiologists in identifying active gastrointestinal bleeding sites accurately. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Abdominal and Whole Body Imaging Source Type: research

Semiautomated Renal Cortex Volumetry in Spectral Computed Tomography: Effect of Monoenergetic Reconstructions on Measurement Precision and Interobserver Variability
Objective The aim of this study was to determine the influence of virtual monoenergetic images (vMEIs) on renal cortex volumetry (RCV) and estimation of split-renal function. Methods Twenty-five patients (mean ± SD, 64.7 ± 9.9 years) underwent a contrast-enhanced dual-layer spectral detector computed tomography. Images were reconstructed with a reference standard (iterative model reconstruction, IMRRef), a newly spectral detector computed tomography algorithm (SPcon) and vMEI at 40, 60, 80, 100, and 120 keV. Two blinded independent readers performed RCV on all data sets with a semiautomated tool. Result...
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Abdominal and Whole Body Imaging Source Type: research

Multidetector Computed Tomography Findings of Adhesive Internal Hernias
Conclusions This study illustrates specific MDCT findings of IHs, and these observations may help guide early clinical management of the condition. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Abdominal and Whole Body Imaging Source Type: research

Spectrum of Early Postoperative Multidetector Computed Tomography Findings Following Cytoreductive Surgery With Hyperthermic Intraperitoneal Chemotherapy
Conclusions Multidetector computed tomography is an excellent imaging modality to identify common postoperative findings as well as complications following CRS + HIPEC. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Abdominal and Whole Body Imaging Source Type: research

Interobserver Agreement of Magnetic Resonance Imaging of Liver Imaging Reporting and Data System Version 2018
Conclusion MR imaging of LI-RADS v2018 is a reliable imaging modality and reporting system that may be used for standard interpretation of hepatic focal lesions. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Abdominal and Whole Body Imaging Source Type: research

The Diagnostic Accuracy of PET(CT) in Patients With Neuroblastoma: A Meta-Analysis and Systematic Review
Conclusions This study provides a systematic review and meta-analysis of diagnostic accuracy studies of PET(CT) for NB. The results indicated that PET(CT) is a highly accurate diagnostic tool for NB. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Abdominal and Whole Body Imaging Source Type: research

The Diagnostic Accuracy of Magnetic Resonance Imaging in Restaging of Rectal Cancer After Preoperative Chemoradiotherapy: A Meta-Analysis and Systematic Review
Conclusions This study provides a systematic review and meta-analysis of diagnostic accuracy studies of MRI for rectal cancer. The results indicate that MRI is a highly accurate diagnostic tool for rectal cancer T3–T4 staging and N staging but sensitivity and specificity are not high. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Abdominal and Whole Body Imaging Source Type: research

Image Quality Measured From Ultra-Low Dose Chest Computed Tomography Examination Protocols Using 6 Different Iterative Reconstructions From 4 Vendors, a Phantom Study
Conclusion This study shows the importance of evaluating IR when introduced clinically. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Thoracic Imaging Source Type: research

Computed Tomography–Based Radiomic Features for Diagnosis of Indeterminate Small Pulmonary Nodules
Conclusions Computed tomography–based radiomic features showed good discriminative power for benign and malignant indeterminate small pulmonary nodules. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Thoracic Imaging Source Type: research

Magnetic Resonance Imaging Texture Analysis in Differentiating Benign and Malignant Breast Lesions of Breast Imaging Reporting and Data System 4: A Preliminary Study
Rationale and Objectives This novel study aims to investigate texture parameters in distinguishing malignant and benign breast lesions classified as Breast Imaging Reporting and Data System 4 in dynamic contrast-enhanced magnetic resonance imaging (MRI). Materials and Methods This retrospective study included 203 patients with 136 breast cancer and 67 benign lesions who underwent breast MRI between November 23, 2016, and August 27, 2018. Co-occurrence matrix-based texture features were extracted from each lesion on T1-weighted contrast-enhanced MRI using MatLab software. The association between texture parameters and ...
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Breast Imaging Source Type: research

Usefulness of Virtual Monochromatic Dual-Layer Computed Tomographic Imaging for Breast Carcinoma
Conclusion Both qualitative and quantitative analyses showed that the image quality of VMIs at 40 keV was significantly higher than that of conventional CT images. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Breast Imaging Source Type: research

Computed Tomography Perfusion Data for Acute Ischemic Stroke Evaluation Using Rapid Software: Pitfalls of Automated Postprocessing
Computed tomography perfusion (CTP) is increasingly used to determine treatment eligibility for acute ischemic stroke patients. Automated postprocessing of raw CTP data is routinely used, but it can fail. In reviewing 176 consecutive acute ischemic stroke patients, failures occurred in 20 patients (11%) during automated postprocessing by the RAPID software. Failures were caused by motion (n = 11, 73%), streak artifacts (n = 2, 13%), and poor contrast bolus arrival (n = 2, 13%). Stroke physicians should review CTP results with care before they are being integrated in their decision-making process. (Source: Journal of Comput...
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Neuroradiology Source Type: research

The Specific Magnetic Resonance Imaging Indicators in Predicting Clear-Cell Renal Cell Carcinoma Metastatic to the Sinonasal Region
Conclusions A hypervascular mass with the characteristic type 4 TIC in the sinonasal region is highly suggestive of a metastatic cc-RCC. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Neuroradiology Source Type: research

Postnatal Intracranial Findings Following Fetal Repair of Spinal Dysraphisms
Conclusions Normally positioned or minimally descended, oftentimes hypoplastic tonsils in the presence of a posterior fossa configuration typical of Chiari II, was the most common presentation. An additional documented feature was an outpouching of the dorsal thecal sac between the opisthion and the posterior arch of C1. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Neuroradiology Source Type: research

Normal Pressure Hydrocephalus: Clinical Symptoms, Cerebrospinal Fluid Flow Metrics and White Matter Changes
Conclusions Patients with NPH, regardless of stages of the diseases, have increased ASV values and could benefit from shunting. Decreasing ASV values of patients with FG 3 comparing with those with FG 2 support the hypothesis of decreasing compliance of brain with aging and increasing severity of small-vessel disease. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Neuroradiology Source Type: research

Contribution of Reformatted Multislice Temporal Computed Tomography Images in the Planes of Stenvers and Pöschl to the Diagnosis of Superior Semicircular Canal Dehiscence
Objective In the diagnosis of superior semicircular canal dehiscence (SSCD), computed tomography (CT) is the only imaging method. The aims of the study were to show that reformat images are more accurate than standard planes for diagnosis of SSCD and to determine the prevalence of SSCD. Methods The retrospective review yielded 1309 temporal CTs performed in our radiology department for any reason. Two radiologist interpreted CTs in standard planes collaboratively. Patients with SSCD were reinterpreted in Pöschl and Stenvers planes by 2 radiologists separately. Results Statistical analysis was made by accepting...
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Neuroradiology Source Type: research

Role of Diffusional Kurtosis Imaging in Differentiating Neuromyelitis Optica–Related and Multiple Sclerosis–Related Acute Optic Neuritis: Comparison With Diffusion-Weighted Imaging
Purpose The discrimination between neuromyelitis optica (NMO)– and multiple sclerosis (MS)–related acute optic neuritis (ON) after the first presentation is difficult in clinical practice. Through a comparison with diffusion-weighted imaging using readout-segmented echo-planar imaging (RESOLVE-DWI), our aim was to determine the feasibility of diffusional kurtosis imaging (DKI) for differential diagnosis. Materials and Methods Orbital DKI and RESOLVE-DWI in a 3.0-T scanner were performed on 37 patients with acute ON (15 NMO-related and 22 MS-related). The mean kurtosis (MK), axial kurtosis (AK), radial kurt...
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Neuroradiology Source Type: research

Hippocampal Sulcus Remnant: Common Finding in Nonelderly Adults on Ultra-High-Resolution 7T Magnetic Resonance Imaging
Conclusions Hippocampal sulcus remnants are commonly seen in healthy nonelderly adults using 7T MR imaging. Accurate diagnosis of HSR based on the microanatomy of hippocampus makes it easier to differentiate them from lesions, and it may help prevent unnecessary treatment. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Neuroradiology Source Type: research

Machine Learning to Predict the Rapid Growth of Small Abdominal Aortic Aneurysm
Conclusions Machine learning is an effective method for the prediction of expansion risk of AAA. Abdominal aortic aneurysm area and major axis of AAA are the important factors to reflect AAA expansion. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Cardiovascular Imaging Source Type: research

Effect of Ultra High-Resolution Computed Tomography and Model-Based Iterative Reconstruction on Detectability of Simulated Submillimeter Artery
Objective To evaluate the effect of ultra high-resolution computed tomography (UHRCT) and model-based iterative reconstruction (MBIR) on the detectability of simulated submillimeter artery. Methods A small vessel phantom ranging from 0.4 to 2.0 mm in diameter and edge phantoms of low to high attenuation values were scanned by UHRCT (super-high-resolution mode and normal-resolution-mode) and conventional CT, and data were reconstructed by MBIR and filtered back projection (FBP). Vessel detectability was assessed subjectively and the effective size at which 50% of response was achieved (ES50 [mm]) was calculated. Modula...
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Cardiovascular Imaging Source Type: research

Patient Based Bull's Eye Map Display of Coronary Artery and Ventricles From Coronary Computed Tomography Angiography
Coronary computed tomography angiography is widely used in clinical practice. Although 3-dimensional (D) volume rendering is useful for interpretation of coronary path and territory, 2D output is common for image interpretation. Most picture archiving and communication system is incapable of manipulating 3D due to insufficient graphic specification. Thus, 2D bull's eye map display is frequently used in cardiac imaging. We developed a bull's eye map which emulated the anatomical information of individual coronary path and dominancy. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Cardiovascular Imaging Source Type: research

Quantitative Analysis of Lower Leg Muscle Enhancement Measured From Dynamic Computed Tomographic Angiography for Diagnosis of Peripheral Arterial Occlusive Disease
Objectives The purpose of this study was to evaluate whether quantitative analysis of lower leg muscle enhancement measured from dynamic computed tomographic angiography (dyn-CTA) could be used for diagnosis of peripheral arterial occlusive disease. Methods Patients (N = 35) with known peripheral arterial occlusive disease underwent the dyn-CTA of calves first. Five minutes later, standard CTA of the peripheral runoff from the diaphragm to the toes was performed. A runoff score was assigned by radiologists as a reference standard for each of 4 lower leg artery segments. The lower leg muscle enhancement measured from t...
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Cardiovascular Imaging Source Type: research

Computed Tomography Angiography Combined With Knowledge-Based Iterative Algorithm for Transcatheter Aortic Valve Implantation Planning: Image Quality and Radiation Dose Exposure With Low-kV and Low-Contrast-Medium Protocol
Objective To evaluate image quality and radiation dose exposure of low-kV setting and low-volume contrast medium (CM) computed tomography angiography (CTA) protocol for transcatheter aortic valve implantation (TAVI) planning in comparison with standard CTA protocol. Methods Sixty-patients were examined with 256-row MDCT for TAVI planning: 32 patients (study group) were evaluated using 80-kV electrocardiogram-gated protocol with 60 mL of CM and IMR reconstruction; 28 patients underwent a standard electrocardiogram-gated CTA study (100 kV; 80 mL of CM; iDose4 reconstruction). Subjective and objective image quality was e...
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Cardiovascular Imaging Source Type: research

Low Radiation Dose and High Image Quality of 320-Row Coronary Computed Tomography Angiography Using a Small Dose of Contrast Medium and Refined Scan Timing Prediction
Objective The aim of the study was to investigate the feasibility of coronary computed tomography (CT) angiography with a low kilovoltage peak scan and a refined scan timing prediction using a small contrast medium (CM) dose. Methods In protocol A, 120-kVp scanning and a standard CM dose were used. The scan timing was fixed. In protocol B, 80 kVp and a 60% CM dose were used. The scan timing was determined according to the interval from the CM arrival to the peak time in the ascending aorta. We measured the CT number and recorded the radiation dose. Results Higher CT numbers were observed in the left circumflex (pro...
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Cardiovascular Imaging Source Type: research

Assessment of the Relationship Between the Coronary Venous and Arterial Systems Using 256-Slice Computed Tomography
Objectives To investigate the coronary venous system (CVS) and its spatial relationship with coronary arteries by using 256-slice computed tomography (CT). Methods One hundred one patients underwent coronary CT angiography by using a 256-slice CT. In each patient, the CVS and its spatial relationship with coronary arteries were analyzed. We measured the diameters and angulations of the coronary sinus (CS), great cardiac vein, anterior interventricular vein (AIV), left marginal vein, posterior vein of the left ventricle (PVLV), and posterior interventricular vein (PIV), and the distances, respectively, from the CS osti...
Source: Journal of Computer Assisted Tomography - January 1, 2020 Category: Radiology Tags: Cardiovascular Imaging Source Type: research

Elbow Injuries Detected on Magnetic Resonance Imaging in Athletes Participating in the Rio de Janeiro 2016 Summer Olympic Games
Conclusion Magnetic resonance imaging–detected elbow injuries during the 2016 Summer Olympics affected mainly the ulnar collateral ligament and the common flexor tendon, with the highest occurrence in weight lifting and judo. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Musculoskeletal Imaging Source Type: research

Extrapelvic Sciatic Nerve Endometriosis, the Role of Magnetic Resonance Imaging: Case Report and Systematic Review
We report a case of an endometrioma located in the right SN with a systematic review of the literature. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Neuro/Head and Neck Imaging Source Type: research

Value of Dual-Energy Computed Tomography for Diagnosing Cervical Lymph Node Metastasis in Patients With Papillary Thyroid Cancer
Conclusions The DECT quantitative parameters NIC and λHU can be an additional tool to diagnose cervical lymph node metastasis. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Neuro/Head and Neck Imaging Source Type: research

Magnetic Resonance Imaging Characteristics of Papillary Thyroid Carcinoma for the Prediction of Cervical Central Compartment Lymph Node Metastasis
This study was to assess magnetic resonance imaging (MRI) characteristics for predicting cervical LNM in PTC. Materials and Methods A total of 119 patients with 154 PTC examined by MRI were assessed. According to inclusion and exclusion criteria, 78 subjects (78 tumors) were included in the final analysis. Conventional MRI findings and apparent diffusion coefficient were recorded. Descriptive statistics for LNM, sensitivity, specificity, and accuracy of various features were obtained. Multivariate logistic regression was performed for identifying independent variables for predicting LNM. Receiver operating characteristi...
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Neuro/Head and Neck Imaging Source Type: research

The Influence of Contrast-to-Noise Ratio on the Discrimination Between Cortical and Juxtacortical Lesions in Multiple Sclerosis
Conclusions Discrimination between CLs and JCs is affected from the sharp visualization of the WM-GM boundary, which is directly related to CNRWM-GM. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Neuro/Head and Neck Imaging Source Type: research

Sciatic Nerve Variants in Patients Diagnosed With Sciatica: Is There a Correlation?
Purpose Compression of the sciatic nerve in its path along the piriformis muscle can produce sciatica-like symptoms. There are 6 predominant types of sciatic nerve variations with type 1 being the most common (84.2%), followed by type 2 (13.9%). However, there is scarce literature on the prevalence of sciatic nerve variation in those diagnosed with sciatica. Materials and Methods The charts of 95 patients clinically diagnosed with sciatica who had a magnetic resonance imaging of the pelvis/hip were retrospectively studied. All patients had T1-weighted axial, coronal, and sagittal images. Magnetic resonance imagings we...
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Neuro/Head and Neck Imaging Source Type: research

Application of Monochromatic Imaging and Metal Artifact Reduction Software in Computed Tomography Angiography after Treatment of Cerebral Aneurysms
This study aimed to evaluate the image quality and degree of metal artifact reduction using the new-generation gemstone spectral imaging (GSI) and metal artifact reduction software (MARs) and to demonstrate the optimal monochromatic energy level for dual-energy cerebral computed tomography angiography (CTA) in patients with intracranial aneurysm after endovascular treatment. Material and Methods A total of 20 patients with cerebral aneurysms treated with coils or clips underwent CTA using gemstone spectral computed tomography. Artifact index was calculated at each energy level with and without MARs. Signal-to-noise (SNR...
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Neuro/Head and Neck Imaging Source Type: research

Comparison of Time-of-Flight–Magnetic Resonance Angiography From Silent Scan Magnetic Resonance Angiography in Depiction of Arteriovenous Malformation of the Brain
Conclusions Silent MRA visualized feeders and drainers in AVMs significantly better than did TOF-MRA. Interrater agreement was also better in silent MRA. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Neuro/Head and Neck Imaging Source Type: research

Surveillance Magnetic Resonance Imaging in Detecting the Second Breast Cancer in Women With a Personal History of Breast Cancer
The objective of this study was to evaluate the diagnostic performance of magnetic resonance imaging (MRI) in detecting the secondary breast cancer among women with a personal history of the lesion. Materials and Methods We retrospectively reviewed breast MRI examinations performed between 2007 and 2011. A total of 798 women with a history of breast cancer were included in the study. Cancer detection rate, positive predictive value (PPV), recall rate, sensitivity, and specificity were assed. Cancer detection rate was stratified by interval after surgery of the primary breast cancer. Also, we derived 1 comparison group f...
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Breast Imaging Source Type: research

Associations Between Apparent Diffusion Coefficient Values and the Prognostic Factors of Breast Cancer
Conclusions Apparent diffusion coefficient values were shown to be correlated with many proven or possible prognostic factors of breast cancer. In particular, ADCdiff can reflect tumor heterogeneity and showed higher correlation. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Breast Imaging Source Type: research

Accuracy of Pulmonary Nodule Volumetry at Different Exposure Parameters in Low-Dose Computed Tomography: A Phantom Study
Objective To explore the exposure parameters with minimized radiation dose for accurate pulmonary nodule volumetry using low-dose computed tomography (LDCT). Methods An anthropomorphic chest phantom with 11 pulmonary nodules (6 solid nodules and 5 ground-glass opacities) was scanned using 256-slice multidetector computed tomography scanner at various tube voltage and current (combinations of 80, 100 and 120 kV with 10 to 30 mAs). Raw data sets were reconstructed using the hybrid iterative reconstruction method and nodule volume was calculated by a semiautomatic software. The absolute percentage error (APE) of nodule v...
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Three-Dimensional Free-Breathing Whole-Heart Coronary Magnetic Resonance Angiography at 1.5 T: Gadobutrol-Enhanced Gradient-Echo Acquisition Sequence Versus Non–Contrast-Enhanced Steady-State Free Precession Sequence
The objective of this study was to compare gadobutrol-enhanced gradient-echo sequence (GRE) acquisition with T2-prepared non–contrast-enhanced steady-state free precession (SSFP) in coronary magnetic resonance angiography at 1.5 T. Methods Twenty-one subjects successfully completed GRE and SSFP acquisition. Signal-to-noise ratio (SNR), contrast-to-noise ratio, image quality, sharpness, visibility, length, and lumen diameter of vessels were analyzed by 2 experienced radiologists. Results The SNR at whole left circumflex artery, left main artery, and proximal left descending artery (LAD) was significantly higher ...
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Computed Tomography Findings Associated With 30-Day Mortality in Patients With Malignant Superior Vena Cava Syndrome
Conclusions Selected clinical and radiological variables are associated with early death in malignant SVCS. These factors may identify a subgroup of patients who may benefit from treatment escalation. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Imaging of Pulmonary Atresia With Ventricular Septal Defect
The aim of this article was to review computed tomography angiography and magnetic resonance angiography of pulmonary atresia with ventricular septal defect. This disorder is a rare complex congenital heart disease. Preoperative imaging of pulmonary atresia with ventricular septal defect with computed tomography angiography and magnetic resonance angiography is important for complete anatomical delineation and planning for treatment. Preoperative imaging used for assessment of the main pulmonary artery (its size, valve, and confluence), aortopulmonary collaterals (its origin, insertion, course, and size), presence of paten...
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Interstitial Lung Disease: Update on the Role of Computed Tomography in the Diagnosis of Idiopathic Pulmonary Fibrosis
Idiopathic pulmonary fibrosis is the commonest interstitial lung disease. Radiologists play an essential role in making an accurate diagnosis, and this is necessary given its prognostic implications and potential use of antifibrotic therapies. This review highlights the radiologic features and imaging classification of fibrosis with reference to recently updated international guidelines and emphasizing the importance of the multidisciplinary team in idiopathic pulmonary fibrosis diagnosis and, in particular, when pathological sampling is required. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Impact of Preprocedure Time-Out Checklist for Computed Tomography–Guided Procedures on Workflow and Patient Safety
The objective of this study was to assess the impact of preprocedural time-out on workflow and patient safety in computed tomography (CT)–guided procedures. Methods In this institutional review board–approved, Health Insurance Portability and Accountability Act–compliant study, preprocedure time-out was assessed by an independent observer in CT-guided procedures performed from January 16, 2018, to May 15, 2018. Anonymous survey of 302 radiology team members involved in image-guided procedures about preprocedure time-out was performed using REDCap. Results Preprocedure time-out for 100 CT-guided proc...
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Abdominal Imaging Source Type: research

Gastric Hepatoid Adenocarcinoma: Differentiation From Gastric Adenocarcinoma With Dynamic Contrast-Enhanced Computed Tomographic Findings
This study aimed to describe the computed tomographic (CT) findings of gastric hepatoid adenocarcinoma (GHA) and determine features distinguishing it from gastric adenocarcinoma (GA). Methods Computed tomographic images of pathologically verified GHA (n = 11) and GA (n = 38) were retrospectively reviewed. α-Fetoprotein (AFP), carcinoembryonic antigen (CEA), and CT findings were assessed in our study. Computed tomographic findings included the location, distribution, growth pattern, ulceration, thickness of gastric wall, enhancement pattern, and the ratio of lesion attenuation to aorta CT attenuation. Short diamete...
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Abdominal Imaging Source Type: research

Nonhemorrhagic Adrenal Infarction in Pregnancy: Magnetic Resonance Imaging and Computed Tomography Evaluation
We present the case of unilateral nonhemorrhagic adrenal infarct in a 29-week pregnant 21-year-old woman. The patient presented with right upper quadrant pain, nausea, and vomiting. Ultrasonography of the right upper quadrant and appendix was negative for pathology. Magnetic resonance imaging of the abdomen demonstrated a right nonhemorrhagic adrenal infarct, subsequently confirmed with limited computed tomography of the upper abdomen. This case discusses the clinical presentation and pertinent imaging findings of adrenal infarction in pregnancy. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Abdominal Imaging Source Type: research

Effective Radiation Dose Reduction in Computed Tomography With Iterative Reconstruction in Patients With Urinary Stone
This study aimed to prospectively compare the image quality and visibility of urinary stone on computed tomographic (CT) images at multiple radiation exposure levels from the same patient reconstructed with sinogram-affirmed iterative reconstruction (SAFIRE). Methods This study included 760 patients with urinary stone who underwent CT with simultaneous acquisition at 6 exposures per patient (100% filtered back projection, 75%, 50%, 37.5%, 25%, and 12.5% SAFIRE). Two radiologists independently assessed overall image quality, noise, and stone visibility by using a 5-point scale. Quantitative measurements, including the CT...
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Abdominal Imaging Source Type: research

Whole-Body Computed Tomography Using Low-Dose Biphasic Injection Protocol With Adaptive Statistical Iterative Reconstruction V: Assessment of Dose Reduction and Image Quality in Trauma Patients
This study aimed to evaluate potential dose savings on a revised protocol for whole-body computed tomography and image quality after implementing Adaptive Statistical Iterative Reconstruction V (ASiR-V) algorism for trauma patients and compare it with routine protocol. Materials and Methods One hundred trauma patients were classified into 2 groups using 2 different scanning protocols. Group A (n = 50; age, 32.48 ± 8.09 years) underwent routine 3-phase protocol. Group B (n = 50; age, 35.94 ± 13.57 years) underwent biphasic injection protocol including unenhanced scan for the brain and cervical spines, follo...
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Abdominal Imaging Source Type: research

Imaging Features of Sclerosing Angiomatoid Nodular Transformation in Spleen
Conclusions Imaging features on CT and MR have a high diagnostic value for SANT, especially when CT combined with MR examination. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Abdominal Imaging Source Type: research

Monoexponential and Biexponential Fitting of Diffusional Magnetic Resonance Imaging Signal Analysis for Prediction of Liver Fibrosis Severity
The objective of this study is to compare the value of monoexponential and biexponential approach to the diffusion-weighted magnetic resonance imaging signal in the prediction of the liver fibrosis. Methods Forty patients with hepatitis C were included. Quantification of the apparent diffusion coefficient (ADC) and pure molecular diffusion (D), pseudodiffusion (D*), and perfusion fraction (f) was performed using 9 b values (b = 0, 20, 50, 100, 200, 400, 600, 800, 1000 s/mm2). Results Significant fibrosis was found in 14 subjects. Monoexponentally derived ADC parameters were significantly correlated. Apparent diffusio...
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Abdominal Imaging Source Type: research

Combined Qualitative and Quantitative Assessment of Low-Attenuation Renal Lesions Improves Identification of Renal Malignancy on Noncontrast Computed Tomography
Conclusion Qualitative and quantitative assessments have relatively good performance, but the combination can nearly eliminate renal cell carcinomas being missed on NCT. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Abdominal Imaging Source Type: research

Von Meyenburg Complex: Current Concepts and Imaging Misconceptions
The objective of the review is to provide up-to-date information about the embryopathogenesis of von Meyenburg complexes, their imaging appearances, diagnostic pitfalls, and clinical significance. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2019 Category: Radiology Tags: Abdominal Imaging Source Type: research