Three-Dimensional Conformal Radiation Therapy in the Liver: MRI Findings Along a Time Continuum
This article discusses changes in the liver parenchyma and tumor after conformal radiation therapy focusing on magnetic resonance imaging. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Usefulness of 18F-fluorodeoxyglucose Positron Emission Tomography–Computed Tomography in Monitoring Adhesive Capsulitis After Breast Cancer Treatment
Conclusions: 18F-fluorodeoxyglucose PET/CT is useful in evaluating AC after breast cancer treatment. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Breast Imaging Source Type: research

3-T Breast Diffusion-Weighted MRI by Echo-Planar Imaging With Spectral Spatial Excitation or With Additional Spectral Inversion Recovery: An In Vivo Comparison of Image Quality
Conclusions: Enhanced DWI provided superior image quality and higher CNR and SNR on a lesion basis. Enhanced DWI can replace cDWI for 3-T breast DWI. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Breast Imaging Source Type: research

Inferior Displacement of the Lower Belly of the Lateral Pterygoid Muscle: A Sign of Temporomandibular Joint Lesions
Conclusions: Inferior displacement of the lower belly of the LPM is a useful radiologic sign to suggest that a lesion arises from the TMJ. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Neuroradiology Source Type: research

Repeatability Investigation of Reduced Field-of-View Diffusion-Weighted Magnetic Resonance Imaging on Thyroid Glands
Conclusions: This study demonstrated that rFOV DWI produced more superior-quality DWI images and more repeatable ADC measurements compared with fFOV DWI, thus providing a feasible quantitative imaging tool for investigating thyroid glands in clinical settings. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Neuroradiology Source Type: research

Three-Tesla Imaging of the Pituitary and Parasellar Region: T1-Weighted 3-Dimensional Fast Spin Echo Cube Outperforms Conventional 2-Dimensional Magnetic Resonance Imaging
Objective: We explored how a novel T1-weighted 3-dimensional (3D) fast spin echo (FSE) sequence (Cube; GE, Waukesha, Wis) might outperform conventional 2-dimensional (2D) FSE techniques for contrast-enhanced imaging of the pituitary and parasellar region. Methods: Ninety-one patients were imaged with 3D Cube and conventional 2D FSE on a 3.0-T magnetic resonance scanner. Two neuroradiologists independently assessed images for anatomical delineation (infundibulum, optic apparatus, and cavernous sinus), degree of artifact, and confidence in lesion definition or exclusion using a 5-point scale. In addition, the readers were as...
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Neuroradiology Source Type: research

Feasibility of 3-Dimensional Sampling Perfection With Application Optimized Contrast Sequence in the Evaluation of Patients With Hydrocephalus
This study aimed to investigate the effectiveness and additive value of T2W 3-dimensional sampling perfection with application optimized contrast (3D-SPACE) with variant flip-angle mode in imaging of all types of hydrocephalus. Our secondary objective was to assess the reliability of 3D-SPACE sequence and correspondence of the results with phase-contrast magnetic resonance imaging (PC-MRI)–based data. Materials and Methods: Forty-one patients with hydrocephalus have undergone 3-T MRI. T2W 3D-SPACE sequence has been obtained in addition to routine hydrocephalus protocol. Cerebrospinal fluid circulation, presence/type/...
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Neuroradiology Source Type: research

Characterization of Multiple Sclerosis Plaques Using Susceptibility-Weighted Imaging at 1.5 T: Can Perivenular Localization Improve Specificity of Imaging Criteria?
Background and Purpose: The purpose of this study was to determine if magnetic resonance (MR) susceptibility-weighted imaging (SWI) can increase the conspicuity of corticomedullary veins within the white matter lesions of multiple sclerosis (MS) and, thus, aid in distinguishing plaques from leukoaraiosis. Methods: We retrospectively reviewed MR examinations in 21 patients with a clinical diagnosis of MS and 18 patients with a clinical diagnosis of dementia. Examinations included fluid-attenuated inversion recovery (FLAIR) and SWI sequences obtained in the axial plane. Lesions greater than 5 mm in diameter on the axial FLAI...
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Neuroradiology Source Type: research

Hyperperfusion in Carotid Stenting Patients
This study aimed to define hyperperfusion in carotid stenting patients without excluding patients with stenosis on the contralateral side. Materials and Methods: A total of 32 patients were enrolled. Prestent computed tomography perfusions were performed within 1 week before stenting, poststent perfusions 3 days after stenting. Prestent relative cerebral blood volume, relative cerebral blood flow, and relative mean transient time (rMTT) were calculated by dividing measurements from ipsilateral stent sides to contralateral sides and prestent difference mean transit time (dMTT) by subtracting contralateral mean transient tim...
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Neuroradiology Source Type: research

Leptomeningeal Enhancement on Magnetic Resonance Imaging as a Predictor of Hemodynamic Insufficiency
The objective of this study was to evaluate the value of leptomeningeal enhancement on magnetic resonance imaging in relation to relative cerebral blood flow (rCBF) and cerebrovascular reserve. Methods: A retrospective analysis was performed for 31 patients with internal carotid artery or proximal middle cerebral artery occlusion without primary collateral flow, who underwent enhanced T1-weighted magnetic resonance imaging and acetazolamide-challenged perfusion computed tomography. They were graded into 3 groups in leptomeningeal enhancement on T1-weighted imaging. The rCBF and the percentage change of cerebral blood flow ...
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Neuroradiology Source Type: research

Subcutaneous Packing in Royal Egyptian Mummies Dated From 18th to 20th Dynasties
Conclusions: Subcutaneous packing procedure was used as part of mummification of royal Ancient Egyptians dated to 18th to 20th dynasties earlier than what was believed in archaeology. The Ancient Egyptian embalmers must have been skilled in dissection and possessed surgical tools that enabled them to perform this fine procedure. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Special Anthropology-Radiology Article Source Type: research

Reduction of Fetal Dose in Computed Tomography Using Anterior Shields
Conclusions: These shields reduce fetal radiation exposure early in pregnancy with acceptable image quality. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Technical Developments Source Type: research

Computed Tomographic–Guided Genitofemoral Nerve Block: A Simple Anterior Approach
We present a novel technique to blocking the genitofemoral nerve in males using an anterior approach with computed tomographic guidance. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Technical Developments Source Type: research

Multidisciplinary Sliding-Gantry CT: From Concept to Reality
Abstract: Sliding-gantry computed tomography offers an interesting variety of treatment options for emergency radiology and clinical routine. The Frankfurt 2-room installation provides an interdisciplinary, multifunctional, and cost-effective concept. It is based on a magnetically sealed rail system for the permanent movement of the gantry between 2 adjacent rooms with fixed-mounted tables. In case of emergency or intensive care patients, routine scanning can be performed in room 1 until computed tomography diagnosis is required in room 2 and can then be continued in room 1 again. Moreover, this concept allows the simultan...
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Technical Developments Source Type: research

X-ray Dark-Field Vector Radiography—A Novel Technique for Osteoporosis Imaging
Abstract: X-ray dark-field vector radiography (XVR) has emerged as an imaging technique which can efficiently yield dark-field scatter images of high quality, even with conventional X-ray tube sources. The XVR yields direction-dependent information about the X-ray scattering of the trabecular bone microstructure without the requirement of resolving the micrometer size structures directly causing the scattering. In this pilot study, we demonstrated that XVR-based degree of anisotropy correlated with femoral bone strength in the context of osteoporosis. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Technical Developments Source Type: research

Investigation of the Non-Gaussian Water Diffusion Properties in Bladder Cancer Using Diffusion Kurtosis Imaging: A Preliminary Study
The objective of this study was to investigate the non-Gaussian water diffusion properties in bladder cancer and assess the efficacy of diffusion kurtosis imaging for estimating the histological grade of bladder cancer. Methods: Twenty-one patients with bladder cancer (high-grade, 12; low-grade, 9) and 17 negative controls who underwent preoperative 3.0-T magnetic resonance imaging including multi–b value diffusion-weighted imaging (b values, 0, 500, 800, 1200, 1500, and 2000 s/mm2) were included. Besides apparent diffusion coefficient (ADC) maps, diffusion kurtosis imaging maps for diffusion coefficient (Dapp) and k...
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Magnetic Resonance Imaging Manifestations of Ovarian Mullerian Mixed Epithelial Borderline Tumors: Imaging and Histologic Features in Comparison With Mullerian Mucinous Borderline Tumors
Abstract: We illustrate the magnetic resonance imaging features of 3 cases of rare ovarian Mullerian mixed epithelial borderline tumor (MEBT) and identify important diagnostic clues based on their detailed histologic, morphologic, and clinical features. Mullerian mixed epithelial borderline tumor has good prognosis, and adequate management is essential. In order to avoid unnecessary aggressive treatment, radiologists should become familiar with the imaging findings of MEBT. To the best of our knowledge, no articles have described the detailed images of MEBT. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Primary Fallopian Tube Carcinoma: Correlation Between Magnetic Resonance and Diffuse Weighted Imaging Characteristics and Histopathologic Findings
Conclusions: The PFTC has some characteristic MR imaging features. The DW imaging, ADC maps, and ADC values are helpful for the detection and differentiation of PFTC from other pelvic masses. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

CAIPIRINHA-VIBE and GRAPPA-VIBE for Liver MRI at 1.5 T: A Comparative In Vivo Patient Study
Objective: Three-dimensional T1-weighted (T1W) gradient recall echo volumetric interpolated breath-hold examination (VIBE) using generalized autocalibrating partially parallel acquisitions (GRAPPA) is one of the key sequences in liver magnetic resonance imaging (MRI) and is used for precontrast, dynamic postcontrast, and delayed postcontrast imaging. The purpose of this study is to compare image quality and liver lesion detection (LLD) on a shorter-duration T1W VIBE sequence using the controlled aliasing in parallel imaging results in higher acceleration (CAIPIRINHA) technique with the conventional T1W GRAPPA-VIBE sequence...
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Lateral Meniscocapsular Separation in Patients With Tibial Plateau Fractures: Detection With Magnetic Resonance Imaging
This study aimed to retrospectively evaluate magnetic resonance imaging findings for the detection of lateral meniscocapsular separation (LMCS) in patients with tibial plateau fractures. We hypothesize that patients with LMCS have greater perimeniscal abnormal signal or greater distance between the lateral meniscus (LM) and the lateral collateral ligament (LCL) than patients without LMCS. Methods: The study group included 16 patients with LMCS and 11 patients with normal LMCS who underwent surgery due to tibial plateau fracture. Magnetic resonance images were assessed for the width of perimeniscal abnormal signals on 3 ort...
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Musculoskeletal Imaging Source Type: research

Tendinopathy of the Achilles Tendon: Volume Assessed by Automated Contour Detection in Submillimeter Isotropic 3-Dimensional Magnetic Resonance Imaging Data Sets Recorded at a Field Strength of 3 T
Objective: This prospective study assesses volume changes of the Achilles tendon in case of chronic tendinopathy (TEN), using an automated contour detection algorithm in submillimeter isotropic 3-dimensional magnetic resonance imaging data sets, recorded at 3 T. Methods: Forty-one subjects (median age, 40 years; range, 19–68 years) were included in this prospective study and underwent nonenhanced magnetic resonance imaging of both Achilles tendons at 3 T, deploying a T2-weighted 3-dimensional Fast-Spin-Echo sequence with submillimeter resolution of 0.8 mm. Of the 41 subjects, 13 were classified as patients with TEN a...
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Musculoskeletal Imaging Source Type: research

Diffusion Tensor Imaging of the Anterior Cruciate Ligament Graft After Reconstruction: Repeatability and Diffusion Tensor Imaging Metrics
Conclusions: Diffusion tensor imaging and diffusion tractography can be used to visualize the anterior cruciate ligament grafts and can provide additional information over standard morphologic magnetic resonance imaging. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Musculoskeletal Imaging Source Type: research

Computed Tomography Appearance of Normal Nonossified Thyroid Cartilage: Implication for Tumor Invasion Diagnosis
Conclusions: Nonossified thyroid cartilage has a homogeneous appearance on contrast-enhanced CT scans, but showed some normal variations that could be mistakenly reported as tumor invasion. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Neuroimaging Source Type: research

Image Quality and Dose Assessment in Inner Ear Computed Tomography Imaging With a Flat Panel–Based System
Conclusion: The new tomographic system has shown excellent characteristics and proves suitable for the imaging of the inner ear. In particular, this prototype requires very low radiation doses. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Neuroimaging Source Type: research

The Role of Screening Sinus Computed Tomography in Pediatric Hematopoietic Stem Cell Transplant Patients
The objective of this study was to evaluate pretransplant sinus computed tomography (CT) as predictor of post–hematopoietic stem cell transplant sinusitis. Methods: We evaluated pretransplant and posttransplant CT findings in 100 children using the Lund-Mackay system and “common-practice” radiology reporting and correlated these with the presence of acute sinusitis. Results: Fourteen percent of patients with normal screening CT developed posttransplant sinusitis, compared with 23% with radiographic abnormalities and 22% with clinical sinusitis alone, not statistically significant. Sensitivity of CT findin...
Source: Journal of Computer Assisted Tomography - March 1, 2015 Category: Radiology Tags: Neuroimaging Source Type: research

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