Comparison of Contrast-Enhanced SPACE and CISS in Evaluating Cavernous Sinus Invasion by Pituitary Macroadenomas on 3-T Magnetic Resonance
Purpose: SPACE (sampling perfection with application-optimized contrasts by using different flip angle evolutions) and CISS (constructive interference in steady state) are 3-dimensional sequences that can increase the signal intensity of cavernous sinus. The purpose of this study was to determine whether contrast-enhanced (CE) SPACE and CE CISS can well demonstrate cavernous sinus invasion (CSI) by pituitary macroadenoma and which one performed better. Methods: In 56 cavernous sinuses from 28 patients with pituitary macroadenoma, CSI grades and image quality were assessed by using CE SPACE and CISS. The assessment results ...
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Neuroimaging Source Type: research

The Active Extravasation of Contrast (Spot Sign) Depicted on Multidetector Computed Tomography Angiography Might Predict Structural Vascular Etiology and Mortality in Secondary Intracranial Hemorrhage
Conclusions: Spot sign was correlated with vascular etiology and was a predictor of mortality in our series of patients. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Neuroimaging Source Type: research

Influence of Leptomeningeal Collateral Pattern on the Prognostic Value of Mismatch in Acute Anterior Circulation Stroke
Conclusions: This study suggests that the predictive value of computed tomography perfusion-estimated mismatch is not influenced by the degree of leptomeningeal collateral flow. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Neuroimaging Source Type: research

Assessment of Single-Bolus Contrast Administration Technique Using Hybrid Dual-Source ECG-Gated Thoracic and Dual-Source Non–ECG-Gated High-Pitch Abdominopelvic CT Acquisitions for Procedural Planning Before Transcatheter Aortic Valve Replacement
Conclusions: Procedural planning for transcatheter aortic valve replacement can be achieved using a single-injection bolus contrast protocol in combination with a 2-part multidetector computed tomographic image acquisition technique with optimal opacification of major arterial structures. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Cardiovascular Imaging Source Type: research

CTCA Image Quality Improvement by Using Snapshot Freeze Technique Under Prospective and Retrospective Electrocardiographic Gating
Conclusions: Snapshot freeze could improve the image quality and interpretability of CCTA with prospective and retrospective ECG gating. Especially, SSF could improve the image quality on right coronary artery by using the 45% R-R interval as the central phase with retrospective ECG gating. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Cardiovascular Imaging Source Type: research

Effects of Model-Based Iterative Reconstruction on Image Quality for Low-Dose Computed Tomographic Angiography of the Thoracic Aorta in a Swine Model
Conclusions: Model-based iterative reconstruction reduces relative noise and improves CNR compared with ASIR and FBP at all kVp and mA settings, which were significantly greater at lower mA settings. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Cardiovascular Imaging Source Type: research

Anomalous Origin of the Left Coronary Artery From the Pulmonary Artery in Infants: Imaging Findings and Clinical Implications of Cardiac Computed Tomography
Conclusions: Cardiac CT can provide fast and accurate depiction of complex coronary arteries, particularly in unstable and fragile patients with ALCAPA, and according to cardiac CT, surgical strategies can be decided. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Cardiovascular Imaging Source Type: research

Right Ventricular Stress-Induced Perfusion Defects and Late Gadolinium Enhancement in Coronary Artery Disease
Conclusions: Proximal right coronary artery and left anterior descending artery stenoses are positively associated, whereas left circumflex artery stenoses are negatively associated with RV stress-induced perfusion defects. Right ventricular LGE was associated with mortality, but further study is needed to determine whether this is independent of left ventricular LGE. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Cardiovascular Imaging Source Type: research

Magnetic Resonance Imaging of Intraductal Papillomas: Typical Findings and Differential Diagnosis
Objective: Even upon core biopsy, accurate classification of benign intraductal papillomas (IPs) can be difficult. Accordingly, IPs are still frequently surgically resected. Therefore, accurate classification of IP by magnetic resonance mammography (MRM) would potentially optimize patient management. However, the few investigations assessing MRM of IP included small patient collectives, and overall accuracy is still unknown. We performed this investigation to analyze the morphologic and dynamic MRM profiles of IP in more detail and to identify the overall accuracy of MRM for differential diagnosis of IP versus malignant br...
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Thoracic and Breast Imaging Source Type: research

Quantitative Emphysema Assessment of Pulmonary Function Impairment by Computed Tomography in Chronic Obstructive Pulmonary Disease
The objective of this study was to determine the capability of quantitative emphysema by computed tomography (CT) to assess pulmonary function impairment in a population of current smokers with and without airflow limitation. Methods: Seventy-six subjects (30 normal smokers; 8 with mild obstruction; 17 with moderate obstruction; 13 with severe obstruction; 8 with very severe obstruction) underwent CT examinations and pulmonary function tests. For the quantitative assessment, percentages of low attenuation volume (%LAVs) of whole lung, right lung, left lung, and each lobe were obtained. Computed tomography measurements were...
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Thoracic and Breast Imaging Source Type: research

Nonsevere Acute Pulmonary Embolism: Prognostic CT Pulmonary Angiography Findings
Conclusions: In clinically nonsevere PE patients, the sPESI and significant parenchymal findings were the CT parameters related to 1-month mortality. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Thoracic and Breast Imaging Source Type: research

Use of Computed Tomography and Positron Emission Tomography/Computed Tomography for Staging of Local Extent in Patients With Malignant Pleural Mesothelioma
Conclusions: Positron emission tomography/CT is more accurate and has a lower interobserver variability for clinical intrathoracic staging of MPM compared with CT. Nevertheless PET/CT underestimated tumor stage in a substantial number of cases, showing the need for a more accurate imaging technology or approach. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Thoracic and Breast Imaging Source Type: research

Morphological Disease Progression of Combined Pulmonary Fibrosis and Emphysema: Comparison With Emphysema Alone and Pulmonary Fibrosis Alone
This study involved 42 patients with CPFE, 45 patients with emphysema alone, and 35 patients with fibrosis alone who underwent computed tomography scans twice (initial and 5 years after the initial scan). The extent of emphysematous lesions was obtained by calculating the percentage of low attenuation area (%LAA) lower than −950 Hounsfield units. Fibrotic lesion was defined as a high attenuation area (HAA) using thresholds with pixels between 0 and −700 Hounsfield units, and the extent of fibrosis was obtained by calculating the mean percentage of HAA (%HAA). For the quantitative evaluation of the total area of...
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Thoracic and Breast Imaging Source Type: research

Downhill Esophageal Varices: A Prevalent Complication of Superior Vena Cava Obstruction From Benign and Malignant Causes
Conclusions: Downhill esophageal varices can be seen in 30% of patients with SVC obstruction. They have several patterns and are mostly systemic-to-systemic collaterals. The most common etiology associated with DEV is renal failure. Downhill esophageal varices are of small caliber, this may in part account for less frequent bleeding compared to uphill varices. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Thoracic and Breast Imaging Source Type: research

Sarcoid-Like Reaction—Computed Tomography Features in 12 Patients
Conclusions: Imaging features of patients with sarcoid-like reaction include lymphadenopathy, small nodules, and ultrafine nodules with confluence, mimicking GGO. Ultrafine nodules with confluence mimicking GGO were unexpectedly common in this series. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Thoracic and Breast Imaging Source Type: research

Procedure-Oriented Sectional Anatomy of the Foot
This article reviews the anatomy of the foot and its relationship to procedures in the clinical setting with or without ultrasound guidance. Anatomically correct axial schematics allow injections to be envisioned relative to clinically important anatomy for common forefoot procedures. Cross-sectional schematics for the ankle were drawn as they appear in imaging projections. The levels and planes of cross section were selected to highlight important anatomic landmarks for injection. It is hoped that these schematics allow for safer and more accurate needle procedures in the foot area. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Graphic Anatomy Source Type: research

Material Characterization of Dual-Energy Computed Tomographic Data Using Polar Coordinates
Abstract: The purpose of this study was to evaluate a new dual-energy computed tomographic postprocessing approach on the basis of the transformation of dual-energy radiodensity data into polar coordinates. Given 2 corresponding dual-energy computed tomographic images, the attenuation data D(U1), D(U2) in Hounsfield units of both tube voltages (U1,U2) were transformed for each voxel to polar coordinates: r (distance to the radiodensity coordinate origin) is an approximate measure of electron density and φ (angle to the abscissa) differentiates between materials. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Technical Developments Source Type: research

Myocardial and Hepatic Iron Overload Assessment by Region-Based and Pixel-Wise T2* Mapping Analysis: Technical Pitfalls and Clinical Warnings
Objective: The aim of this study was to compare myocardial T2* assessment with region-based (RB) T2* multiecho technique (CMRtools) with the pixel-wise (PW) inline myocardial T2* mapping (Siemens) in patients with thalassemia major for myocardial iron characterization. Materials and Methods: Forty-three thalassemia major patients were examined on a 1.5-T scanner using conventional gradient multiecho sequence. All the images were analyzed using both RB and PW T2* mapping. Coefficients of reproducibility (CRs) were used to assess the interoperator and intraobserver variability of each software. Results: The mean (SD) myocard...
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Technical Developments Source Type: research

Ghost in the Left Ventricle on Electrocardiogram-Gated Cardiac Computed Tomography by Turbulent Flow
We report on an extremely rare case of a fake lesion in the left ventricle on electrocardiogram-gated cardiac computed tomography simulating thrombus or tumor by turbulent flow in a 14-year-old boy. Cardiac magnetic resonance imaging with contrast-enhanced myocardial perfusion and delayed enhancement images were helpful in excluding true thrombus or tumor. Awareness of this potential pitfall is critical in order to avoid unnecessary anticoagulation or surgery. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Radiation Dose Reduction at Coronary Artery Calcium Scoring by Using a Low Tube Current Technique and Hybrid Iterative Reconstruction
Conclusions: The radiation dose for CACS can be reduced at a low tube current and hIR without affecting the calcium score. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Coronary Computed Tomographic Angiography in Coronary Artery Bypass Grafts: Comparison Between Low-Concentration Iodixanol 270 and Iohexol 350
Conclusions: Low-concentration iso-osmolar Iodixanol 270 provides image quality comparable with that of Iohexol 350, allowing diagnostic CCTA follow-up of patients with CABGs. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Prevalence and Significance of Incidentally Noted Dilation of the Ascending Aorta on Routine Chest Computed Tomography in Older Patients
Conclusions: Current guidelines for yearly surveillance imaging of aortic dilation could be revised to increase the follow-up interval and/or improve risk stratification to better identify the small subset of patients most likely to have disease progression. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Lung Cancer Associated With Cystic Airspaces
Conclusions: Progressive wall thickening or appearance/increase of a nodule inside or outside a cystic airspace should raise suspicion of lung cancer irrespective of FDG uptake. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Breast Ultrasound Elastography and Magnetic Resonance Imaging of Fibrotic Changes of Breast Disease: Correlations Between Elastography Findings and Pathologic and Short Tau Inversion Recovery Imaging Results, Including the Enhancement Ratio and Apparent Diffusion Coefficient
Conclusions: The ES and L/M ratio are correlated significantly with each other, and they are correlated with the fibrosis. These results suggest that they will provide the information on the fibrosis and may help the diagnosis of breast lesions. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Relationship Between the Position of the Mental Foramen and the Anterior Loop of the Inferior Alveolar Nerve as Determined by Cone Beam Computed Tomography Combined With Mimics
Conclusions: A relationship was observed between the location of the mental foramen and the presence of the anterior loop of the inferior alveolar nerve. We highlight the effectiveness of cone beam computed tomography and 3D reconstruction in the identification of important anatomical structures relevant for preoperative assessment for surgical procedures in the anterior region of the mandible. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Head and Neck Radiology Source Type: research

Three-Dimensional Measurement of Femoral Neck Anteversion and Neck Shaft Angle
We present a three-dimensional measurement technique for femoral neck anteversion and neck shaft angles which do not require alignment of the femoral and scanner axes. Two assessors performed the measurements on 11 patients (22 femurs). Repeatability between assessors was 2.7 degrees for femoral neck anteversion and 4.8 degrees for neck shaft angle. Measurements compared with an alternative single slice method were different by 2 degrees (3 degrees) in average. The method was repeatable and appropriate for clinical practice. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Musculoskeletal Imaging Source Type: research

Anatomic-Functional (Perfusion-Based) Magnetic Resonance Imaging Follow-up in Patients With Rheumatoid Arthritis Treated With Anti–Interleukin 6 Antibodies: A Comparison With Clinical Scores and Serologic Data
Conclusions: Considering the temporal change of perfusion-derived MRI parameters (transfer constant, blood plasma volume fraction, relative enhancement, and rate of early enhancement) as well as morphologic MRI parameters (synovial volume measurements), a quantifiable assessment of response to TCZ therapy in rheumatoid arthritis seems possible at an even earlier time point compared with clinical assessment scores, whereas serologic biomarkers proved nonspecific in this respect. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Musculoskeletal Imaging Source Type: research

Malignant Bone Tumor Intramedullary Invasion: Evaluation With Dual-Energy Computed Tomography in a Rabbit Model
Purpose: The aim of this study was to investigate the usefulness of dual-energy computed tomography (CT) spectral imaging for differentiating intramedullary microscopic invasion from simple marrow edema in a rabbit VX2 carcinoma model. Methods: VX2 tumors were implanted into the right tibiae of 30 New Zealand white rabbits. After 4 weeks, single-source dual-energy spectral CT was performed, and tumor specimens were cut into sagittal sections and partitioned into pathological slices. Multiplanar reconstruction images corresponding to the sagittal sections were selected for dot-to-dot comparisons to determine the macroscopic...
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Musculoskeletal Imaging Source Type: research

Comparison of Quantitative and Semiquantitative Dynamic Contrast-Enhanced MRI With Respect to Their Correlation to Delayed Gadolinium-Enhanced MRI of the Cartilage in Patients With Early Rheumatoid Arthritis
Conclusions: Semiquantitative and quantitative analyses of perfusion are applicable to show that cartilage damage correlates with the inflammation activity despite the absence of joint space narrowing. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Musculoskeletal Imaging Source Type: research

The Anteromedial Tibial Rim Sign: An Indicator of Patellotibial Impaction in Acute Anterior Cruciate Ligament Tears
Objective: We have encountered unexplained anteromedial tibial rim edema in acute anterior cruciate ligament (ACL) tears. Our goal was to determine the incidence, internal derangements, and mechanism of injury in patients with anteromedial tibial rim edema (rim sign). Materials and Methods: A retrospective review of ACL tears diagnosed by magnetic resonance imaging over 7 years was performed. Patients were dichotomized into those with and without a rim sign. Results: There were 132 acute ACL tears. Individuals with a rim sign (31, 23%) had more contusions, fractures, ligament tears (P
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Musculoskeletal Imaging Source Type: research

Subtrochanteric Femur Fractures: Review of the Complete Pathologic Spectrum With Emphasis on Distinguishing Imaging Features
Abstract: Subtrochanteric femur fractures result from a variety of mechanisms of injury and underlying pathologies. Radiologists can play a pivotal role by differentiating the etiology of a subtrochanteric femur fracture, which assists the orthopedic surgeon in choosing the correct method of treatment. To provide this valuable service, one must be familiar with the characteristic radiologic features of the numerous causative etiologies, ranging from Paget disease to underlying bone lesions to iatrogenic fractures. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Musculoskeletal Imaging Source Type: research

Rhabdoid Tumor: An Aggressive Renal Medullary Tumor of Childhood
We present a case of a renal rhabdoid tumor in a 2-month-old girl. Rhabdoid tumors are rare primary renal tumors in children, but they have characteristic features—medullary sinus invasion and subcapsular fluid collections—which enable a specific diagnosis. The classic imaging characteristics of this tumor compared to other more common primary pediatric renal tumors will be reviewed. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Extracapsular Extension of Prostate Cancer: Diagnostic Value of Combined Multiparametric Magnetic Resonance Imaging and Isovoxel 3-Dimensional T2-Weighted Imaging at 1.5 T
The objective of this study was to assess whether adding isovoxel 3-dimensional T2-weighted imaging (volume isotropic T2-weighted acquisition [VISTA]) to multiparametric magnetic resonance imaging (mp-MRI) improves the ability to diagnose the extracapsular extension (ECE) of prostate cancer. Methods: Two radiologists independently evaluated ECE on images acquired with mp-MRI only (method A) and mp-MRI plus VISTA (method B) in 50 men who had undergone prostatectomy. We also compared the signal-to-noise ratio of the tumor on T2WI and VISTA scans. Results: Sensitivity, specificity, and accuracy were higher with method B. For ...
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Magnetic Resonance Imaging Findings in Atypical Polypoid Adenomyoma
Conclusions: Differentiating APAM from other malignant polypoid uterine endometrial tumors may still pose difficulties, especially when the tumor seems to invade the myometrium on MRI. Comprehensive clinical information about the patient including age, pathological assessment of the endometrium, and MRI findings should be essential to provide indication for a diagnosis of APAM. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Diagnostic Efficiency of Split-Bolus Dual-Energy Computed Tomography for Patients With Suspected Urinary Stones
Conclusions: Virtual noncontrast image displays high accuracy for detecting urinary stones, regardless of body mass index. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Clinical Impact of 3-Dimensional Balanced Turbo-Field-Echo Magnetic Resonance Cholangiopancreatography at 3 T: Prospective Intraindividual Comparison With 3-Dimensional Turbo-Spin-Echo Magnetic Resonance Cholangiopancreatography
The objective of this study was to evaluate the clinical utility of 3-dimensional (3D) balanced turbo-field-echo (BTFE) magnetic resonance cholangiopancreatography (MRCP) with gate and track acquisition at 3 T. Methods: Using a 3-T unit, we subjected 52 consecutive patients to 3D BTFE MRCP with the navigator-gated technique and 3D turbo-spin-echo volume isotropic T2-weighted acquisition (VISTA) MRCP with the navigator-triggered technique. Two radiologists independently rated the image quality and visibility of the right and left hepatic duct, cystic duct, common bile duct, gallbladder, and main pancreatic duct using a 4-po...
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Dynamic Contrast-Enhanced Magnetic Resonance Imaging for Pancreatic Ductal Adenocarcinoma at 3.0-T Magnetic Resonance: Correlation With Histopathology
Conclusions: The parameters of QDCE-MRI of PDA can be used to evaluate the degrees of tumor fibrosis and the expressions of VEGF and Ki67. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Arterial Pseudoaneurysms Complicating Pancreatitis: Literature Review
Abstract: Arterial pseudoaneurysm formation of visceral arteries as a vascular complication of pancreatitis, either acute or chronic, is an uncommon phenomenon. This review article discusses the incidence, pathophysiology, imaging, treatment strategies, and prognosis of mesenteric pseudoaneurysms complicating pancreatitis. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Review of Visceral Aneurysms and Pseudoaneurysms
Abstract: Abdominal aneurysms and pseudoaneurysms represent an important finding every emergency radiologist must detect. True aneurysms are usually incidental to the presenting complaint, whereas pseudoaneurysms are nearly always symptomatic. We review the demographics, pathophysiology, clinical presentation, computed tomographic appearance, treatment approaches, and prognosis of visceral aneurysms and pseudoaneurysms involving splenic, gastroduodenal, hepatic, superior mesenteric, and renal arteries. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Effectiveness of Additional Diagnostic Parameters in Magnetic Resonance Mammography: A Comparative Study with the BI-RADS Classification and Scoring System
Conclusions: Additional parameters can improve the specificity of MR imaging. T2-weighted signal features, adjacent vessel sign, unilateral-focal edema, and hook sign were considered as effective parameters. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2014 Category: Radiology Tags: Thoracic and Breast Imaging Source Type: research

Quantitative Computed Tomography Assessment of Air Trapping in Relapsing Polychondritis: Correlations With Spirometric Values
This study included 23 patients with RP who underwent both CT and PFTs. In each patient, the mean lung density (MLD) was obtained by averaging CT attenuation of the lung parenchyma on both inspiratory and expiratory CT. The ratio of expiratory MLD to inspiratory MLD (E/I ratio) was also calculated. Correlations between those quantitative CT measurements and the results of PFTs were evaluated using Spearman rank correlation. Results: The expiratory MLD and E/I ratio were significantly correlated with forced expiratory volume in 1 second (FEV1) %predicted, ratio of FEV1 to FVC (FEV1/FVC), and the mid expiratory phase of forc...
Source: Journal of Computer Assisted Tomography - November 1, 2014 Category: Radiology Tags: Thoracic and Breast Imaging Source Type: research

The Cost of Screening Esophageal Varices: Traditional Endoscopy Versus Computed Tomography
Conclusion: Computed tomography has been shown to be sensitive in detecting esophageal varices and now less costly to implement in screening. The cost of esophageal rupture in endoscopy and the less costly risk of contrast reaction as well as radiation exposure in CT of the abdomen should be considered when developing a screening paradigm. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2014 Category: Radiology Tags: Thoracic and Breast Imaging Source Type: research

Diagnostic Quality of Dual-Source Coronary CT Examinations Performed Without Heart Rate Control: Importance of Obesity and Heart Rate on Image Quality
Objectives: For dual-source cardiac computed tomography (CT) scans without heart rate (HR) control, the influence of body habitus on quality is uncertain. We evaluated study quality across a range of HRs and body size. Methods: One hundred sixty subjects were randomly selected for 4 HR groups ( (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2014 Category: Radiology Tags: Cardiac Imaging Source Type: research

Diffusion-Weighted Magnetic Resonance Neurography for Parapharyngeal Schwannomas: Preoperative Determination of the Originating Nerves
Conclusions: The DW-MRN is a feasible approach for determining an originating nerve. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2014 Category: Radiology Tags: Neuroradiology Source Type: research

A Histogram-Based Similarity Measure for Quantitative Magnetic Resonance Imaging: Application in Acute Mild Traumatic Brain Injury
Conclusions: Our results show that HSM is more sensitive than the standard mean values in detecting brain tissue changes. Future studies on brain tissue properties using quantitative magnetic resonance imaging should consider the use of HSM to properly capture any tissue changes. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2014 Category: Radiology Tags: Neuroradiology Source Type: research

Neuroendocrine Tumors: Beyond the Abdomen
Abstract: Several classification systems for neuroendocrine tumors (NETs) exist, which use variable terminology and criteria for grading and staging. This variability in terminology can cause confusion and difficulty in recognizing which tumors are, in fact, members of this heterogeneous group of malignancies. The largest group of NETs, the gastroenteropancreatic NETs, has been well described and characterized; however, there are less-recognized extra-abdominal NETs that can arise from nearly any organ in the body. In this article, the clinical features and imaging appearances of the extra-abdominal NETs will be reviewed, ...
Source: Journal of Computer Assisted Tomography - November 1, 2014 Category: Radiology Tags: Neuroradiology Source Type: research

Magnetic Resonance Imaging Manifestations of Decidualized Endometriotic Cysts: Comparative Study With Ovarian Cancers Associated With Endometriotic Cysts
Conclusions: In pregnant subjects, the presence of endometriotic cysts with low-height solid component showing high signal intensities on T2-weighted imaging is highly indicative of decidualization. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2014 Category: Radiology Tags: Abdominal Imaging Source Type: research

Intrapancreatic Accessory Spleen: Possibilities of Computed Tomography in Differentiation From Nonfunctioning Pancreatic Neuroendocrine Tumor
Conclusions: CT can be used to differentiate between IPAS and PanNET with good specificity and sensitivity. The IPAS mirrors the spleen’s enhancement and is usually located along the dorsal surface of the pancreas. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2014 Category: Radiology Tags: Abdominal Imaging Source Type: research

Isolated Pelvic Fluid in Males on Outpatient Magnetic Resonance Imaging Examinations: Differences in Incidence Based on Age
Purpose: Determine the incidence and amount of isolated pelvic fluid in males, stratified by age, on outpatient pelvic magnetic resonance imaging (MRI) examinations performed for lower back or extremity pain. Methods: After institutional review board approval, 161 pelvic MRIs performed on males for musculoskeletal or neurologic indications over an 18-month period were retrospectively reviewed for isolated pelvic fluid by 2 radiologists. Patients with a potential etiology for the fluid were excluded. Volume and maximal 2-dimensional measurements of fluid were calculated. Statistical analysis included logistic regression, Wi...
Source: Journal of Computer Assisted Tomography - November 1, 2014 Category: Radiology Tags: Abdominal Imaging Source Type: research

Choosing the Best Reconstruction Technique in Abdominal Computed Tomography: A Systematic Approach
Conclusions: This study indicates that the preferred choice for reconstruction of CT liver examinations performed with the Toshiba Aquilion ONE should be the FC18 filter with IR, although the IR technique did not significantly improve lesion detectability and did not compensate for the dose reduction in this study. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2014 Category: Radiology Tags: Abdominal Imaging Source Type: research