Differential Diagnosis of Benign and Malignant Breast Tumors Using Apparent Diffusion Coefficient Value Measured Through Diffusion-Weighted Magnetic Resonance Imaging
Conclusions: Our data strongly support the conclusion that the ADC value measured through DW-MRI is an important radiographic index for differential diagnosis of benign and malignant breast tumors and is critical to our assessment of the internal structure of tumors. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - July 1, 2015 Category: Radiology Tags: Breast Imaging Source Type: research

Plasmacytoma of Liver Mimicking Hepatocellular Carcinoma at Multiphasic Computed Tomography Evaluation
Abstract: Plasmacytoma of liver is a rare hepatic tumor more often seen at autopsy than described in the literature; it is also more likely diagnosed in the setting of multiple myeloma than as isolated extramedullary plasmacytoma. However, when found in the setting of multiple myeloma, it is associated with worse clinical outcome. The authors describe a case of an elderly man presenting with nonspecific chronic abdominal pain and a new 4-cm hepatic mass. At multiphasic computed tomography, the mass demonstrated an enhancement pattern identical to that expected of hepatocellular carcinoma; however, thorough history failed t...
Source: Journal of Computer Assisted Tomography - July 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Graft Kidney Torsion After Simultaneous Kidney-Pancreas Transplant: Report of 2 Cases and Literature Review
We report 2 cases in which kidney torsion after simultaneous kidney-pancreas transplant was diagnosed by ferumoxytol-enhanced magnetic resonance imaging/angiography and present a review of the relevant literature. Radiologists and clinicians should be aware of this entity because graft salvage depends on rapid diagnosis and surgical detorsion. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - July 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Magnetic Resonance Imaging and Pathologic Findings of 26 Cases With Uterine Adenomatoid Tumors
Conclusions: Small solid uterine masses with homogeneous hypointensity on T2WI and lower enhancement or cystic lesions with inner irregular solid nodule may indicate the diagnosis of uterine ATs, and final diagnosis can be determined with pathology. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - July 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Ultralow-Dose Abdominal Computed Tomography: Comparison of 2 Iterative Reconstruction Techniques in a Prospective Clinical Study
Purpose: To assess lesion detection and image quality of ultralow-dose (ULD) abdominal computed tomography (CT) reconstructed with filtered back projection (FBP) and 2 iterative reconstruction techniques: hybrid-based iDose, and image-based SafeCT. Materials and Methods: In this institutional review board–approved ongoing prospective clinical study, 41 adult patients provided written informed consent for an additional ULD abdominal CT examination immediately after standard dose (SD) CT exam on a 256-slice multidetector computed tomography (iCT, Philips-Healthcare). The SD examination (size-specific dose estimate, 10 ...
Source: Journal of Computer Assisted Tomography - July 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Additional Diagnostic Value of Inversion Recovery Single-Shot Fast-Spin Echo Sequence in Differentiation Between Hepatic Hemangiomas and Cysts
Objective: The aim of this study was to evaluate the additional diagnostic value of “inversion recovery” single-shot fast-spin echo (IR-SSFSE) sequence using the inversion time at the null point for hepatic hemangiomas as a supplement to standard T2-weighted (T2W) magnetic resonance imaging for the distinction of hemangiomas and cysts. Methods: A total of 228 lesions in 56 patients were evaluated in this retrospective study. In addition to routine hepatic magnetic resonance imaging, IR-SSFSE imaging using inversion time value of 600 milliseconds (null point for hepatic hemangiomas) was obtained. Two radiologist...
Source: Journal of Computer Assisted Tomography - July 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Comparison of Dynamic Phase Enhancement of Hepatocellular Carcinoma Using Gadoxetate Disodium vs Gadobenate Dimeglumine
Conclusions: Gadoxetate isodium resulted in lower CNR during the arterial phase and higher CNR during the portal venous, equilibrium, and 5-minute delayed phases compared with gadobenate dimeglumine using the Food and Drug Administration–approved doses; however, overall, there was no statistical significance (P = 0.077). (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - July 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Use of Dual-Source Computed Tomography to Evaluate Renal Cortical Perfusion in Patients With Essential Hypertension Without Diabetes: Preliminary Results
Objectives: To assess renal cortical perfusion parameter changes using computed tomography (CT) renal perfusion examination in patients with essential hypertension (EH), especially those with EH-related target organ damage (TOD), and to correlate renal perfusion parameters with clinical and laboratory data. Methods: Consecutive patients with EH (without exclusion criteria) and healthy controls underwent 128-slice dual-source CT perfusion imaging. Quantitative perfusion analysis of renal cortex parameters [blood flow (BF), blood volume, time to peak, and mean transit time] was performed. Results: Ninety-one participants (60...
Source: Journal of Computer Assisted Tomography - July 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Imaging Requirements for Utilization of T2*-Weighted Magnetic Resonance Imaging for Identification of Hepatocellular Carcinoma in Cirrhosis: Effect of Hepatic Iron Content
Conclusions: Most of HCCs can be identified on T2*WI without gadolinium; however, performance is significantly affected by background HIC. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - July 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Assessment of Filtered Back Projection, Adaptive Statistical, and Model-Based Iterative Reconstruction for Reduced Dose Abdominal Computed Tomography
Purpose: To compare standard of care and reduced dose (RD) abdominal computed tomography (CT) images reconstructed with filtered back projection (FBP), adaptive statistical iterative reconstruction (ASIR), model-based iterative reconstruction (MBIR) techniques. Materials and Methods: In an Institutional Review Board–approved, prospective clinical study, 28 patients (mean age 59 ± 13 years ), undergoing clinically indicated routine abdominal CT on a 64-channel multi-detector CT scanner, gave written informed consent for acquisition of an additional RD ( (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - July 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Characterization of Liver Tumors by Diffusion-Weighted Imaging: Comparison of Diagnostic Performance Using the Mean and Minimum Apparent Diffusion Coefficient
Purpose: To determine the minimum apparent diffusion coefficient (ADCmin) values of benign and malignant hepatic lesions based on diffusion-weighted imaging and to compare the diagnostic performance of ADCmin and mean ADC (ADCmean) values for differentiating between benign and malignant tumors of the liver. Materials and Methods: We retrospectively subjected 240 patients with 195 malignant (hepatocellular carcinoma [HCC], n = 137; metastases, n = 44; cholangiocellular carcinoma [CCC], n = 14) and 45 benign tumors (hemangiomas, n = 37; focal nodular hyperplasia [FNH], n = 8). Both ADCmean and ADCmin were evaluated independe...
Source: Journal of Computer Assisted Tomography - July 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Procedure-Oriented Torsional Anatomy of the Proximal Arm for Spasticity Injection
Conclusions: It is hoped that this series of images will increase the accuracy and safety of needle placement for spasticity and nerve block injections in the proximal upper arm. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Graphic Anatomy Source Type: research

Initial Phantom Study Comparing Image Quality in Computed Tomography Using Adaptive Statistical Iterative Reconstruction and New Adaptive Statistical Iterative Reconstruction V
Purpose: The purpose of this study was to assess the image quality of a novel advanced iterative reconstruction (IR) method called as “adaptive statistical IR V” (ASIR-V) by comparing the image noise, contrast-to-noise ratio (CNR), and spatial resolution from those of filtered back projection (FBP) and adaptive statistical IR (ASIR) on computed tomography (CT) phantom image. Materials and Methods: We performed CT scans at 5 different tube currents (50, 70, 100, 150, and 200 mA) using 3 types of CT phantoms. Scanned images were subsequently reconstructed in 7 different scan settings, such as FBP, and 3 levels of...
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Technical Developments Source Type: research

Automatic Exposure Control Systems Designed to Maintain Constant Image Noise: Effects on Computed Tomography Dose and Noise Relative to Clinically Accepted Technique Charts
Conclusions: Automatic exposure control systems that prescribe constant noise as patient size varies can yield excessive noise in small patients and excessive dose in obese patients compared with clinically accepted technique charts. Use of noise-level technique charts and tube current limits can mitigate these effects. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Technical Developments Source Type: research

Comparison of a New Integral-Based Half-Band Method for CT Measurement of Peripheral Airways in COPD With a Conventional Full-Width Half-Maximum Method Using Both Phantom and Clinical CT Images
Objectives: To compare a new integral-based half-band method (IBHB) and a conventional full-width half-maximum (FWHM) method in measuring peripheral airway dimensions at airway phantoms and thin-section computed tomography of chronic obstructive pulmonary disease (COPD). Methods: The IBHB was validated and compared using airway phantoms and 50 patients with COPD. Airway parameters (wall area percentage [WA%], mean lumen radius, and mean wall thickness) were measured at fourth to sixth generations of the right apical bronchus. Matched results from 2 methods were compared and correlated with forced expiratory volume (FEV) in...
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Velocity Quantification by Electrocardiography-Gated Phase Contrast Magnetic Resonance Imaging in Patients With Cardiac Arrhythmia: A Simulation Study Based on Real Time Transesophageal Echocardiography Data in Atrial Fibrillation
Conclusions: The PC MRI velocity measurements in patients with varying RR interval durations are not significantly different from time-averaged real-time velocity data for a typical segmented k-space data acquisition schemes. Though beat-to-beat variations in atrial velocities that were observed with TEE cannot be detected with ECG-gated multibeat PC MRI, it can reliably assess average flow patterns across multiple beats (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Unusual Appearance of Malignant Peritoneal Mesothelioma
Abstract: Malignant peritoneal mesothelioma (MPM) is a rare and fatal cancer arising from the mesothelial cells lining the peritoneum. This typically occurs in men in their fifth and sixth decades, but can be seen in women and any age group. Pleural and extrapleural mesothelioma can arise in the setting of asbestos exposure, but other reported causes of MPM include exposure to silicate fibers and radiation therapy. Because it presents with vague symptoms such as abdominal pain, anorexia, and weight loss, it is generally advanced at diagnosis. This is a case of MPM that presented initially at contrast-enhanced computed tomo...
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Diagnostic Performance of Multidetector Computed Tomography in Distinguishing Unilateral From Bilateral Abnormalities in Primary Hyperaldosteronism: Comparison of Multidetector Computed Tomography With Adrenal Vein Sampling
Conclusions: Multidetector computed tomography, even when performed with the latest generation of MDCT scanners, does not offer sufficient diagnostic accuracy to replace AVS in patients with PH. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Computed Tomographic and Clinicopathological Features of Inflammatory Pseudotumor of the Spleen
Conclusions: Inflammatory pseudotumor of the spleen is a rare benign process with nonspecific CT features. The mass was generally hypodense with delayed enhancement on CT. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Computed Tomographic Findings of Enterohemorrhagic Escherichia coli O157 Infection: An Analysis of a 7-Case Regional Outbreak
Conclusions: We should consider EHEC infection as part of a differential diagnosis when the findings of severe right colitis are seen without enteritis. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Primary Ovarian Endometrioid Adenocarcinoma: Magnetic Resonance Imaging Findings Including a Preliminary Observation on Diffusion-Weighted Imaging
Conclusions: Ovarian endometrioid adenocarcinoma usually appears as a large, oval, or lobulated cystic mass with mural nodules. Cystic components show isointensity or hyperintensity on T1WI, solid components and hyperintensity on T2WI and DWI. Synchronous primary cancer of the ovary endometrium is another characteristic feature of OEC. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Change in Portal Vein Hemodynamics After Chemoembolization for Hepatocellular Carcinoma: Evaluation Through Multilevel Dynamic Multidetector Computed Tomography During Arterial Portography
This study aimed to clarify the effect of embolization with lipiodol on portal vein hemodynamics. Methods: Time-density curves of the main portal vein on multilevel dynamic multidetector computed tomography during arterial portography were used to analyze peak computed tomography value (PV), time to PV (TPV), arrival time of contrast medium at the main portal vein (ATMPV), slope [(PV − 150) / (TPV − ATMPV)], and slope ratio (slope after embolization / slope before embolization). Results: In 20 patients with hepatoma, ATMPV and TPV were significantly prolonged and the time-density curve slope was significantly l...
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Preliminary Data Using Computed Tomography Texture Analysis for the Classification of Hypervascular Liver Lesions: Generation of a Predictive Model on the Basis of Quantitative Spatial Frequency Measurements—A Work in Progress
Conclusions: Computed tomography texture analysis may prove valuable in lesion characterization. Differentiation between common hypervascular lesion types could be aided by the judicious incorporation of texture parameters into clinical analysis. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Effect on Perfusion Values of Sampling Interval of Computed Tomographic Perfusion Acquisitions in Neuroendocrine Liver Metastases and Normal Liver
Conclusions: Increasing SIs beyond 1 second yield significantly different CT perfusion parameter values compared with the reference values at SI0.5. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

Assessment of Liver Perfusion by IntraVoxel Incoherent Motion (IVIM) Magnetic Resonance–Diffusion-Weighted Imaging: Correlation With Phase-Contrast Portal Venous Flow Measurements
Objectives: To prospectively verify, in vivo, Le Bihan’s model of signal decay in magnetic resonance/diffusion-weighted imaging (intravoxel incoherent motion) in healthy liver parenchyma. Methods: Informed consent and institutional board approval were obtained. To measure both underfasting and postprandial conditions, apparent, slow, and fast diffusion (D*) coefficients and perfusion fraction of liver parenchyma, 40 healthy volunteers (19 women and 21 men) underwent a 3.0-T magnetic resonance imaging examination, including portal venous flow measurements by a 2-dimensional phase-contrast sequence, and multi-b diffusi...
Source: Journal of Computer Assisted Tomography - May 1, 2015 Category: Radiology Tags: Abdominal Imaging Source Type: research

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