Intravoxel Incoherent Motion Diffusion-Weighted Imaging Versus Dynamic Contrast-Enhanced Magnetic Resonance Imaging: Comparison of the Diagnostic Performance of Perfusion-Related Parameters in Breast
Conclusions Intravoxel incoherent motion imaging has the same value in differentiating malignant and benign breast lesions, compared with DCE MRI, in terms of perfusion-related parameters. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2018 Category: Radiology Tags: Breast Imaging Source Type: research

The Value of Quality-Assured Magnetic Resonance Imaging of the Breast for the Early Detection of Breast Cancer in Asymptomatic Women
Conclusions The exclusive use of quality-assured breast MRI allows the early detection of breast cancer with a high sensitivity and specificity. The CAD analysis of MRI does not give additional information but shows results comparable with digital mammography. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2018 Category: Radiology Tags: Breast Imaging Source Type: research

Investigating the Robustness Neighborhood Gray Tone Difference Matrix and Gray Level Co-occurrence Matrix Radiomic Features on Clinical Computed Tomography Systems Using Anthropomorphic Phantoms: Evidence From a Multivendor Study
Conclusions: Radiomic features that are derived from the spatial distribution of voxel intensities should be particularly scrutinized for reproducibility in a multivendor environment. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Investigation on Computed Tomography Features of Primary Thymic Atypical Carcinoid Tumors
Conclusions: Our results suggested that the MCC and hypervascular signs should be included as characterization in addition to the standard features for the diagnosis of aTC. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Multislice Computed Tomography Assessment of Tracheobronchial Patterns in Partial Anomalous Left Pulmonary Artery
Conclusions: The PALPA can be associated with tracheobronchial anomalies and airway compression depending on its orientation to the airway. Noninvasive imaging modalities such as MSCT will be helpful for making further management decisions. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Maximum Arterial Contrast Concentrations With Computed Tomography and Left Ventriculography: Implications for Contrast Nephrotoxicity Risk
Conclusion: Higher maximum renal arterial contrast concentration may be responsible for the greater risk of nephropathy after cardiac angiography than after doses for CT. The faster rate of change of renal arterial contrast concentration after ventriculography may also increase the likelihood of renal toxicity. Clinical Relevance/Application: Maximum renal arterial contrast concentration, and/or the rapidity of change of this parameter, may be partly responsible for the risk of nephropathy. Controlling these factors might permit reduction of nephropathy risk; they also suggest avenues of research into the pathophysiology ...
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Electrocardiography-Gated Computed Tomography of the Bronchial Arteries With Iterative Image Reconstruction: Clinical Evaluation and Image Quality
Conclusions: With the help of IMR and ECG-synchronized prospective-triggered technology, the bronchial artery anatomy can be accurately depicted in patients with massive hemoptysis. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

The Peculiar Case of a Large Right Lower Quadrant Solitary Fibrous Tumor With Vasculature Arising from the Splenic Artery and Vein
We present the interesting case of a patient with peritoneal solitary fibrous tumor (SFT). The patient initially presented with right lower quadrant pain. Computed tomography findings revealed the presence of a large mass near the cecum, with both arterial and venous blood supply arising directly from the splenic artery and vein. The patient ultimately underwent surgical excision of the mass, and pathological examination was consistent with benign SFT. Not only is the location of our patient's tumor exceedingly rare, but also, to our knowledge, it is the first reported case of SFT with such a unique vascular supply. (Sourc...
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Magnetic Resonance Imaging of a Urethral Caruncle and the Pathologic Correlation: A Report of 3 Cases
We present 3 patients with symptomatic urethral caruncles who underwent magnetic resonance imaging preoperatively. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Analysis of a Steerable Needle for Fine Needle Aspiration and Biopsy: Efficiency and Radiation Dose Compared With a Conventional Straight Needle
Conclusions: Using an in vitro model embedded with obstacles, the steerable needle performed better than a straight needle with regard to procedure time, needle repositioning events, and CT scans required for placement. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Reduced Field-of-View Diffusion-Weighted Magnetic Resonance Imaging of the Prostate at 3 Tesla: Comparison With Standard Echo-Planar Imaging Technique for Image Quality and Tumor Assessment
Conclusions: Potentially improved image quality of rFOV-DWI did not yield improved tumor assessment. Continued optimization is warranted. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

An Assembled Prototype Multimaterial Three-Dimensional–Printed Model of the Neck for Computed Tomography– and Ultrasound-Guided Interventional Procedures
Abstract: A low-cost, semirealistic, multimaterial prototype phantom of the neck was developed for computed tomography– and ultrasound-guided interventions, using three-dimensional (3D) printing with a variety of materials as well as through molding techniques. This dual-modality phantom can be used by trainees for practicing procedures and can also serve as a prototype for developing more complex and realistic 3D-printed models, particularly with the continued development and advancement in multimaterial 3D printing technologies. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Head and Neck Imaging Source Type: research

Computed Tomography Features of Benign and Malignant Calcified Thyroid Nodules: A Single-Center Study
Conclusions: Hounsfield unit values of CTNs may be helpful for differentiating malignancy from benignity. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Head and Neck Imaging Source Type: research

Dual-Energy CT: Balance Between Iodine Attenuation and Artifact Reduction for the Evaluation of Head and Neck Cancer
Conclusions: High energy VMIs less than 100 keV can achieve modest artifact reduction while preserving sufficient iodine attenuation and could represent a useful additional reconstruction for evaluation of head and neck cancer. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Head and Neck Imaging Source Type: research

Interreader Reliability and Clinical Validity of a Magnetic Resonance Imaging Grading System for Cervical Foraminal Stenosis
This study also assessed the correlations between radiologic and clinical findings. Material and Methods: A total of 289 patients (men:women = 155:134, mean age = 50 years) who underwent oblique sagittal MRI of the cervical spine at our hospital were included. According to the MR grading system suggested by Park et al (Br J Radiol 2013;86:20120515), 2 radiologists, 2 trainees, and 2 clinicians measured CNFS grade at the most narrow point. A neurosurgeon assessed the associated clinical manifestations. κ statistics were used to analyze the interreader agreement among the radiologists and clinicians. The clinical corr...
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Inflow Angle of Small Paraophthalmic Aneurysms Is a Determinant of Adjacent Sphenoid Bone Remodeling
Conclusions: Our findings add support to using computed tomography angiography in the follow-up of aneurysms to assess surrounding bone changes and to the development of a more evidence-based approach in the management of small paraophthalmic aneurysms, which currently may be managed conservatively. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

T2*-Correction in Dynamic Contrast-Enhanced Magnetic Resonance Imaging of Glioblastoma From a Half Dose of High-Relaxivity Contrast Agent
Conclusions: The administration of half dose of the high-relaxivity contrast agent gadobenate is effective in improving AIF by reducing T2*-shortening effects on dynamic contrast-enhanced magnetic resonance imaging and ensuring at the same time an adequate signal enhancement in tumor tissue. The use of 0.05-mmol/kg bw of gadobenate not only is feasible but also can lead to a better estimation of Ktrans based on a more accurate AIF assessment. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Vessel-Masked Perfusion Magnetic Resonance Imaging With Histogram Analysis Improves Diagnostic Accuracy for the Grading of Glioma
Conclusions: Vessel-masked nCBV maps can prevent overestimations of CBV measurements and can improve diagnostic accuracy for glioma grading. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Differentiating Primary Central Nervous System Lymphomas From Glioblastomas and Inflammatory Demyelinating Pseudotumor Using Relative Minimum Apparent Diffusion Coefficients
Objective: Our purpose was to evaluate the diagnostic performance of diffusion-weighted imaging, the relative minimum apparent diffusion coefficient (rADCmin) in differentiating primary central nervous system lymphomas (PCNSLs) from glioblastomas (GBMs) and inflammatory demyelinating pseudotumors (IDPs). Materials and Methods: Magnetic resonance images were reviewed retrospectively in 82 patients including 39 PCNSLs, 35 GBMs, and 8 IDPs. Regions of interest were drawn around the tumor on contrast-enhanced axial images; these images were transferred onto coregistered ADC maps to obtain the ADCmin, and the normalized ADCmin...
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Quantitative Evaluation of Diffusion and Dynamic Contrast-Enhanced Magnetic Resonance Imaging for Differentiation Between Primary Central Nervous System Lymphoma and Glioblastoma
This study aimed to evaluate the utility of diffusion and permeability parameters derived from diffusion-weighted imaging and dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) for differentiating primary central nervous system lymphoma (PCNSL) and glioblastoma multiforme (GBM) and to assess the correlation among these parameters. Materials and Methods: Forty-two patients with GBM and 18 patients with PCNSL underwent conventional 3.0-T MRI, diffusion-weighted imaging, and DCE-MRI before surgery. Normalized apparent diffusion coefficient ratio (rADC) and DCE-MRI–derived parameters (the volume transfer con...
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Venous Sinus Thrombosis in Blunt Trauma: Incidence and Risk Factors
Conclusions: Dural venous sinus thrombosis in the setting of blunt trauma with a calvarial fracture crossing a dural venous sinus has an incidence of 23%. Increased suspicion for thrombosis is warranted in patients with temporal or skull base fractures, low GCS score, and recent fall from great height. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Iterative Reconstruction Designed for Brain CT: A Correlative Study With Filtered Back Projection for the Diagnosis of Acute Ischemic Stroke
The objective of this study is to evaluate the usefulness of iterative model reconstruction designed for brain computed tomography (CT) (IMR-Neuro) for the diagnosis of acute ischemic stroke. Methods: This retrospective study included 20 patients with acute middle cerebral artery infarction who have undergone brain CT and 20 nonstroke patients (control). We reconstructed axial images with filtered back projection (FBP) and IMR-Neuro (slice thickness, 1 and 5 mm). We compared the CT number of the infarcted area, the image noise, contrast, and the contrast to noise ratio of the infarcted and the noninfarcted areas between t...
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

T2*-Weighted and Diffusion Magnetic Resonance Imaging Differentiation of Cerebral Fat Embolism From Diffuse Axonal Injury
This study differentiates cerebral fat embolism (CFE) and diffuse axonal injury (DAI) on diffusion-weighted magnetic resonance imaging (DWI) and T2*-weighted magnetic resonance imaging. Methods: Consecutive CFE and DAI cases were retrospectively selected. Hemorrhages were characterized by number, size/shape, and distribution, whereas DWI lesions by pattern. The number of hemorrhages was compared using the Mann-Whitney test with adjustment for multiple comparisons, whereas DWI abnormality was compared using Fisher exact test. Results: Seven CFE and 20 DAI patients were included. Cerebral fat embolism had significantly mor...
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Effects of B Value on Quantification of Rapid Diffusion Kurtosis Imaging in Normal and Acute Ischemic Brain Tissues
Conclusions: We concluded that b value significantly impacted the quantification of DKI indices in both normal and acute ischemic brain tissues. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Neuro–Magnetic Resonance Imaging in Hand, Foot, and Mouth Disease: Finding in 412 Patients and Prognostic Features
Purpose: The aims of this study were to describe the neuroimaging findings in hand, foot, and mouth disease and determine those who may provide prognosis. Material and Methods: Magnetic resonance imaging scans in 412 severe hand, foot, and mouth disease between 2009 and 2014 were retrospectively evaluated. The patients who had the neurological signs were followed for 6 months to 1 year. According to the good or poor prognosis, 2 groups were categorized. The incidence of lesions in different sites between the 2 groups was compared, and multivariate analysis was used to look for risk factors. Results: The major sites of in...
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Noncontrast Hybrid Arterial Spin-Labeled Imaging of the Intracranial Arteries
Objective: The purpose of this study is to evaluate feasibility, image quality (IQ), and accuracy of noncontrast hybrid arterial spin labeling (NoHASL) magnetic resonance angiography (MRA) compared with time of flight (TOF) MRA and contrast-enhanced (CE) MRA in patients with known/suspected cerebrovascular ischemia. Methods: Thirty inpatients were imaged at 1.5 T. Two neuroradiologists assessed 630 intracranial arterial segments for IQ (1, nondiagnostic; 3, satisfactory for diagnosis; and 5, excellent). Hemodynamically significant stenosis (>50%) was assessed against all combined techniques as reference. Results: The ...
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

The Association of Intracranial Vascular Calcification and Stenosis With Acute Ischemic Cerebrovascular Events
Conclusions: Without concurrent stenosis, IAC is a significant risk factor for dAIS. When stenosis is present, IAC does not increase the association with dAIS. Stenotic and nonstenotic calcifications may represent different disease processes, as represented in the histology literature. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Dual-Energy Computed Tomography in Stroke Imaging: Technical and Clinical Considerations of Virtual Noncontrast Images for Detection of the Hyperdense Artery Sign
Conclusions: Virtual noncontrast images derived from DECT enable an accurate detection and characterization of HAS. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - November 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Contained Rupture of an Abdominal Aortic Aneurysm With Extensive Vertebral Body and Retroperitoneal Space Destruction
Abstract: Chronic contained rupture of an abdominal aortic aneurysm with vertebral body erosion most commonly presents with symptoms of low back pain. Although not well known, vertebral body erosion or destruction may be seen in up to 25% of patients with sealed or contained rupture of an abdominal aortic aneurysm. This appearance on cross-sectional imaging may mimic a malignant or infectious process. Although these cases can present a diagnostic challenge, published cases of chronic contained rupture of an abdominal aortic aneurysm with vertebral body erosion demonstrate clinical and imaging similarities that, when recogn...
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Musculoskeletal Radiology Source Type: research

Assessing Synovitis and Bone Erosion With Apparent Diffusion Coefficient in Early Stage of Rheumatoid Arthritis
Purpose: The aim of this study was to assess the value of apparent diffusion coefficient (ADC) in distinguishing synovitis from joint fluid and bone erosion from cysts. Methods: Twenty-eight patients with suspected rheumatoid arthritis underwent diffusion-weighted imaging and pre– and post–contrast-enhanced magnetic resonance imaging. The mean ADC values were compared between synovitis and joint effusion and between bone erosion and cyst. Results: Mean ADC value of synovitis was significantly lower than that of the joint effusion (2.6 ± 0.37 × 10−3 vs 1.63 ± 0.37 × 10−3 m...
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Musculoskeletal Radiology Source Type: research

Clinical Significance of Incidentally Detected Torus Tubarius Calcification
Conclusions: Based on the largest series to date on an unrestricted population using thin-section CT imaging, calcification of the torus tubarius is a rare entity with an overall prevalence of 0.6%. Although the clinical significance remains uncertain, there is no significant association between torus tubarius calcification and common medical conditions. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Dynamic Contrast-Enhanced Magnetic Resonance Imaging of Ocular Melanoma as a Tool to Predict Metastatic Potential
Conclusions: Dynamic contrast-enhanced magnetic resonance imaging has the potential to differentiate orbital melanomas with metastatic and nonmetastatic spread. Thus, DCE-MRI has the potential to be an in vivo imaging technique to predict early which patients are prone to metastatic disease. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Automated Attenuation Based Tube Potential Selection of the Lower Extremity Runoff: A Comparison to Fixed Kilovolt with Automated Tube Current Modulation
Conclusion: Automated ATPS allows for significant dose savings in lower-extremity runoff CTA, whereas image quality remains constant at a high level. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Vascular Imaging Source Type: research

Usefulness of a Low Tube Voltage: Knowledge-Based Iterative Model Reconstruction Algorithm for Computed Tomography Venography
Conclusions: At clinically acceptable reconstruction times, 80-kVp CTV using the IMR technique yielded better qualitative and quantitative image quality than HIR and FBP. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Vascular Imaging Source Type: research

Optimizing Contrast Media Injection Protocols in Computed Tomography Angiography at Different Tube Voltages: Evaluation in a Circulation Phantom
Objectives: The aim of this study was to investigate the minimum iodine delivery rate (IDR) and contrast media (CM) volume required for diagnostic contrast enhancement of 350 HU (Hounsfield units) in the ascending aorta at different kV settings. Methods: Dynamic computed tomography acquisitions from 70 to 150 kV were performed in a circulation phantom. First, injections with IDR ranging from 0.1 to 2.0 g I/s were tested for each kV. In the second part, the IDR was held constant, whereas the CM volume was reduced from 50 to 10 mL. Diagnostic aortic peak enhancement for each kV was compared using the Kruskal-Wallis test. P ...
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Vascular Imaging Source Type: research

Comparison of 270 Versus 320 mg I/mL of Iodixanol in 1 Image Assessment of Both Renal Arteries and Veins With Dual-Energy Spectral CT Imaging in Late Arterial Phase and Their Influence on Renal Function
Conclusions: The renal arteries and veins can be fully assessed in late arterial phase with 270 mg I/mL of iodixanol using dual-energy spectral CT scan with better preserved renal function. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Vascular Imaging Source Type: research

Left Atrium Measurements via Computed Tomography Pulmonary Angiogram as a Predictor of Diastolic Dysfunction
Conclusions: Computed tomography pulmonary angiography measurements of LA and PA/aorta ratio correlate strongly with equivalent findings on echo. We suggest that LA and PA/aorta measurements be included on chest CTPA reports. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Sternal Development and Variations and Anomalies in Patients With Microtia: Evaluation Using 3-Dimensional Computed Tomography
Conclusions: The development of the different components of the sternum is a process with wide variation among patients with microtia. A different distribution of mesosternal types I to II among our population age range was found, and the incidence of sternal foramina was lower in patients with microtia. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Lung Cancer in Patients With Tuberculous Fibrothorax and Empyema: Computed Tomography and 18F-Fluorodeoxyglucose Positron Emission Tomography Findings
Conclusions: Lung cancers ipsilateral to tuberculous fibrothorax or empyema presented larger and advanced T stages, and the diagnosis could be delayed. The most common type cancer was squamous cell carcinoma. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Relationship of Nonseptal Late Gadolinium Enhancement to Ventricular Tachyarrhythmia in Hypertrophic Cardiomyopathy
This study aimed to determine the relationship between the extent and the location of late gadolinium enhancement (LGE) and ventricular tachyarrhythmia or implantable cardioverter defibrillator (ICD) in hypertrophic cardiomyopathy (HCM). Methods: We enrolled 115 patients with HCM and LGE. The location of LGE was divided into septal and nonseptal segments. Clinical backgrounds and LGE were compared in patients between with and without the arrhythmia or consequent ICD installation. Results: There were significant differences in the number of risk markers, left ventricular ejection fraction, extent of global LGE, and extent...
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

CT Attenuation of Pericoronary Adipose Tissue in Normal Versus Atherosclerotic Coronary Segments as Defined by Intravascular Ultrasound
Conclusions: Mean CT attenuation of pericoronary adipose tissue is significantly lower for normal versus atherosclerotic coronary segments. This supports a hypothesis of different types of pericoronary adipose tissue, the more metabolically active of which might exert local effects on the coronary vessels, thus contributing to atherogenesis. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Effects of Percutaneous Coronary Intervention on Viable Myocardium and Heart Function of Diabetic Patients With Chronic Total Occlusion
Objective: The aim of this study was to compare the effects of percutaneous coronary intervention (PCI) on coronary chronic total occlusion patients with (DM) or without (NDM) diabetes mellitus. Methods: A total of 78 patients were divided into DM group and NDM group according to whether the patient has DM. The results of PCI were analyzed using quantitative coronary analysis. In addition, all the patients underwent 99mTc-MIBI (methoxyisobutylisonitrile) single-photon emission computed tomography (SPECT) and ultrasonic cardiogram in the first week and the sixth month after PCI to evaluate PCI results. During the 6-month f...
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Measurement of Myocardial Extracellular Volume Fraction From Iodine Density Images Using Single-Source, Dual-Energy Computed Tomography: A Feasibility Study
Objective: The aims of this study were to develop and validate an iodine density method for the quantification of myocardial extracellular volume (ECV) fraction using single-source, dual-energy computed tomography. Methods: Extracellular volume measurements were carried out in 40 subjects (20 patients with heart failure, 20 control subjects) using single-source, dual-energy computed tomography. Subtraction-derived ECVs (subECVs) were computed by subtracting precontrast from delayed images. Iodine density-derived ECVs (iECVs) were calculated from iodine density images obtained from delayed images. Iodine density-derived EC...
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Appropriate Use Criteria for Cardiac Computed Tomography: Impact on Diagnostic Utility
This study investigates the impact of AUC on evaluability of CCT to determine if inappropriate tests result in a greater proportion of nondiagnostic results. Methods: Investigators reviewed the medical records of 2417 consecutive patients who underwent CCT at the University of Ottawa Heart Institute. We applied the 2010 AUC and classified them as appropriate, inappropriate, or uncertain. Unclassifiable tests, as well as those with uncertain appropriateness, were excluded from the final analysis. Cardiac computed tomography results were classified as diagnostic if (1) all coronary segments were visualized, evaluable, and w...
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

The Application of Iodine Quantitative Information Obtained by Dual-Source Dual-Energy Computed Tomography on Chemoradiotherapy Effect Monitoring for Cervical Cancer: A Preliminary Study
Objective: The aim of the study is to investigate the potential contribution of the iodine quantitative parameters of dual-phase dual-energy computed tomography (DECT) scanning for chemoradiotherapy (CRT) response monitoring for cervical cancer. Methods: Patients who were pathologically certified having cervical cancer and intended for concurrent radiotherapy and chemotherapy were prospectively included in our study. Contrast-enhanced DECT scanning was performed before CRT, which was repeated after 1 month of therapy, using a dual-source CT scanner onset. Changes in tumor size were assessed according to RECIST 1.0. Quanti...
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Magnetic Resonance Imaging–Based Prostate-Specific Antigen Density for Prediction of Gleason Score Upgrade in Patients With Low-Risk Prostate Cancer on Initial Biopsy
Conclusions: Magnetic resonance imaging–based PSAD could help in predicting postoperative GS upgrade in patients with low-risk prostate cancer. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Diaphragmatic Hernia After Living-Donor Right Hepatectomy: An Important Late Donor Complication
Conclusions: Clinicians and radiologists should not overlook the possibility of diaphragmatic hernia after living-donor right hepatectomy, especially in old liver donors. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Application and Indication of Carcinoembryonic Antigen Triggered 18F-Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography Scanning in the Detection of Relapse of Colorectal Cancer Patients After Curative Therapy
Conclusions: Positron emission tomography/CT can be selectively applied as a primary examination in CRC patients with asymptomatic elevation of CEA. High CEA levels, increased body mass index, and advanced TNM staging are risk factors for relapse. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Intraluminal Uterine Hypodensity in CT Scans of Postmenopausal Women: Recommendations for Interpretation
This study aims to investigate the association between intraluminal uterine hypodensity and uterine malignancy and establish thresholds that would minimize routine gynecological evaluation. Methods: Two groups were recruited retrospectively: cancer group, which comprised 32 sequential endometrial cancer patients, and postmenopausal group, which comprised 63 women, with no known gynecologic malignancy. Two radiologists independently measured hypodensity, transversely in the axial plane and anterioposteriorly in the sagittal plane. The association between cancer and hypodensity was evaluated. Receiver operating characteri...
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Computed Tomography Perfusion Following Transarterial Chemoembolization of Hepatocellular Carcinoma: A Feasibility Study in the Early Period
Conclusions: Our findings indicate that visual interpretation of the PI of HCC derived from dual-input maximum slope CT perfusion may be an early predictor of response to TACE. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - September 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research