Low–Tube Voltage Computed Tomography During Hepatic Arterial Phase: The Effect of Body Habitus on Image Quality
Conclusions: Among various body habitus factors, MV showed the strongest association with image noise and CNR in the hepatic arterial phase using 80-kVp CT. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Prediction of Vascular Invasion Using a 3-Point Scale Computed Tomography Grading System in Pancreatic Ductal Adenocarcinoma: Correlation With Surgery
Conclusions: A 3-point scale CT grading system is a simple and practical method in predicting peripancreatic vessel invasion and, importantly, correlates with surgical grade and pathology. Axial images combined with multiplanar reformation, nCTCP, and CT angiography can strengthen the comprehensive evaluation of PDA for resectability. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Abdominal Multidetector Computed Tomography for Suspected Small-Bowel Obstruction: Multireader Study Comparing Radiologist Performance for Predicting Surgical Outcomes
Objective: To compare performance of junior (JR)/senior (SR) abdominal radiologists using multidetector computed tomography (MDCT) to predict surgical intervention, bowel resection, and presence of bowel ischemia in patients with suspected small-bowel obstruction (SBO). Methods: Retrospective, institutional review board-approved, Health Insurance Portability and Accountability Act-compliant, blinded, independent review of MDCT studies for suspected SBO in 179 adults (mean age, 55.8 years; 86 men/93 women) was performed by 12 board-certified radiologists (6 JR, 6 SR). Readers rated likelihood of need for surgery, bowel isc...
Source: Journal of Computer Assisted Tomography - May 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Fat Suppressed Contrast-Enhanced T1-Weighted Dynamic Magnetic Resonance Imaging at 3T: Comparison of Image Quality Between Spectrally Adiabatic Iversion Recovery and the Multiecho Dixon Technique in Imaging of the Prostate
Objective: To compare the quality of fat suppression and image quality between multiecho Dixon technique (mDixon) and spectrally adiabatic iversion recovery (SPAIR) in dynamic contrast-enhanced magnetic resonance imaging of the prostate. Methods: This prospective study assigned thirty consecutive patients to scanning with SPAIR technique (SPAIR protocol) and another consecutive 30 patients to scanning with mDixon technique (mDixon protocol). We calculated the contrast, signal to noise ratio (SNR), contrast to noise ratio (CNR) and the coefficient of variation between the 2 protocols. Two readers compared homogeneity of fa...
Source: Journal of Computer Assisted Tomography - May 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Change in Liver Imaging Reporting and Data System Characterization of Focal Liver Lesions Using Gadoxetate Disodium Magnetic Resonance Imaging Compared With Contrast-Enhanced Computed Tomography
Conclusions: For patients with indeterminate lesions seen on contrast-enhanced CT, HBP MRI using gadoxetate improves lesion characterization when using LI-RADS v2014 criteria. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Imaging of Hereditary Tumors of the Female Genital System
This article reviews the hereditary cancer syndromes associated with gynecological malignancies, as well as the imaging findings and staging system of endometrial and ovarian cancers. These associations are important for proper patient screening, diagnosis, and treatment. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Heart-Rate Reduction With Adjusted-Dose Ivabradine in Patients Undergoing Coronary Computed Tomographic Angiography: A Randomized Trial
Objective: Our prospective, randomized, open-label study assessed the efficacy of a heart rate–lowering, adjusted-dose protocol with ivabradine prior to coronary computed tomographic angiography (CCTA). Methods: Patients undergoing CCTA were randomized to 7 days of adjusted-dose ivabradine or standard care (ie, no additional medication). Heart rate and β-blocker and antianxiety medication use on the day of the CCTA were recorded. Results: One hundred one patients were randomized (mean age, 60 [SD, 13] years; 66% women). Significantly more patients on ivabradine had heart rates of 60 beats per minute or less at...
Source: Journal of Computer Assisted Tomography - May 1, 2017 Category: Radiology Tags: Cardiac Imaging Source Type: research

The Feasibility of Dual-Energy Computed Tomography in Cardiac Contusion Imaging for Mildest Blunt Cardiac Injury
Conclusions: Dual-energy computed tomography can show cardiac contusion and could be useful and feasible for the diagnosis and follow-up of blunt cardiac injuries. Dual-energy computed tomography is a new, user-independent, and valuable imaging technique. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2017 Category: Radiology Tags: Cardiac Imaging Source Type: research

Paradoxical Effect of Cardiac Output on Arterial Enhancement at Computed Tomography: Does Cardiac Output Reduction Simply Result in an Increase in Aortic Peak Enhancement?
Conclusions: The magnitude of the effect of CO on aortic peak enhancement depends on the CM injection duration. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2017 Category: Radiology Tags: Cardiac Imaging Source Type: research

Myocardial T2 Mapping in Patients With Hypertrophic Cardiomyopathy
Objective: The aim of this study was to evaluate the usefulness of T2 mapping for detecting myocardial injuries in patients with hypertrophic cardiomyopathy (HCM). Methods: Twenty-one HCM patients and 7 healthy volunteers were examined. The T2 values were measured at hyperintense areas (high-T2 areas) identified with T2 mapping, at late gadolinium enhancement (LGE) areas, and in nullified myocardium of the HCM patients. The associations between T2 values and laboratory data or LGE areas were assessed. Results: High-T2 areas had significantly greater T2 values than LGE areas (P (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - May 1, 2017 Category: Radiology Tags: Cardiac Imaging Source Type: research

Assessment of Diastolic Function in Hypertrophic Cardiomyopathy by Computed Tomography–Derived Analysis of Left Ventricular Filling
Objectives: Hypertrophic cardiomyopathy (HCM) is characterized by diastolic dysfunction, which is difficult to assess by noninvasive methods. We hypothesized that measurement of simultaneous left ventricular (LV) and left atrial (LA) volume changes by cardiac computed tomography would be useful in the assessment of diastolic function in HCM. Methods: We studied 21 patients with HCM and 21 age-matched controls. The LA and LV volumes were calculated and early and late diastolic volume changes derived. Results: The HCM patients had significantly larger LA volumes and reduced LA total emptying fraction (30 ± 7% vs 42 ...
Source: Journal of Computer Assisted Tomography - May 1, 2017 Category: Radiology Tags: Cardiac Imaging Source Type: research

Procedure-Oriented Torsional Anatomy of the Hand for Spasticity Injection
Conclusion: Normal anatomy of hand can become distorted in spastic hemiparesis. Diagnostic ultrasound is able to discern these anatomic locations if the sonographer is competent in recognizing the appearance of normal anatomy and is skilled in resolving the visual changes that occur in spastic hemiparesis. The authors hope this series of images will increase the accuracy, safety, and efficacy of spasticity injections in the hand. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Radiologic Anatomy Source Type: research

Absent Vascular Signal on Time-of-Flight Magnetic Resonance Angiography Due to Recent Ferumoxytol Infusion
We report a case with complete absence of flow-related signal in the intracranial and cervical vessels due to ferumoxytol infusion given 5 days before magnetic resonance angiography. Ferumoxytol is a newly approved parenteral therapy for iron-deficiency anemia in patients with renal failure and awareness of this drug–magnetic resonance imaging interaction is needed. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Vascular Imaging Source Type: research

Multidetector (64+) Computed Tomography Angiography of the Lower Limb in Symptomatic Peripheral Arterial Disease: Assessment of Image Quality and Accuracy in a Tertiary Care Setting
Objective: The aim of this study was to evaluate image quality and accuracy of 64+ detector multidetector computed tomography angiography (MDCTA) for hemodynamically significant (≥50%) stenosis in patients with symptomatic peripheral arterial disease (PAD) using digital subtraction angiography as the reference standard. Methods: This is a retrospective study of 29 patients with PAD (19 men, 10 women) who underwent lower limb MDCTA (64- or 80-detector) and digital subtraction angiography. Image quality and accuracy of MDCTA for hemodynamically significant stenosis were assessed in the infrarenal aorta and 15 lower extre...
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Vascular Imaging Source Type: research

Is Carotid Plaque Contrast Enhancement on MRI Predictive for Cerebral or Cardiovascular Events? A Prospective Cohort Study
Conclusions: The absence of CPCE seems to be a negative predictor for CCVE. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Vascular Imaging Source Type: research

Early Response of Hepatocellular Carcinoma to Chemoembolization: Volume Computed Tomography Liver Perfusion Imaging as a Short-Term Response Predictor
Conclusions: Whole-liver CT perfusion allows for hemodynamic evaluation of HCC lesions. The HAP, HAPI, and hepatic portal perfusion values may be useful predictors of short-term therapeutic response after transarterial chemoembolization. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Aortic and Hepatic Contrast Enhancement During Hepatic-Arterial and Portal Venous Phase Computed Tomography Scanning: Multivariate Linear Regression Analysis Using Age, Sex, Total Body Weight, Height, and Cardiac Output
Objective: We evaluated the effect of the age, sex, total body weight (TBW), height (HT) and cardiac output (CO) of patients on aortic and hepatic contrast enhancement during hepatic-arterial phase (HAP) and portal venous phase (PVP) computed tomography (CT) scanning. Methods: This prospective study received institutional review board approval; prior informed consent to participate was obtained from all 168 patients. All were examined using our routine protocol; the contrast material was 600 mg/kg iodine. Cardiac output was measured with a portable electrical velocimeter within 5 minutes of starting the CT scan. We calcul...
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Whole-Body Computed Tomography–Based Body Mass and Body Fat Quantification: A Comparison to Hydrostatic Weighing and Air Displacement Plethysmography
Conclusions: We have shown that total body mass correlates remarkably well with both the Schneider method and Beam method of mass quantification. Furthermore, %BF calculated with the Schneider method and Beam method CT algorithms correlates remarkably well with ADP. The application of these CT algorithms have utility in further research to accurately stratify risk factors with periorgan, visceral, and subcutaneous types of adipose tissue, and has the potential for significant clinical application. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Obesity, Hepatic Steatosis, and Their Impact on Fat Infiltration of the Trunk Musculature Using Unenhanced Computed Tomography
Objectives: The aim of the study was to assess whether hepatic steatosis predicts muscle fat content independent of body mass index (BMI). Methods: Regions of interest were drawn over several trunk muscles and over the right lobe of the liver to obtain the computed tomography (CT) density in 100 subjects with unenhanced CT studies of the abdomen and pelvis. Univariate and multivariate linear regression were used to examine the associations between BMI and hepatic steatosis and between BMI and trunk muscle density. Results: Body mass index was associated with trunk muscle fat (P (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Incidental Findings in Abdominal Dual-Energy Computed Tomography: Correlation Between True Noncontrast and Virtual Noncontrast Images Considering Renal and Liver Cysts and Adrenal Masses
Conclusions: In conclusion, attenuation measurements of incidental findings like renal cysts or adrenal masses on TNC and VNC images derived from second generation dual-energy CT scans show excellent correlation providing considerable dose savings, favorable for future application in clinical routine. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Tumor Enhancement and Heterogeneity Are Associated With Treatment Response to Drug-Eluting Bead Chemoembolization for Hepatocellular Carcinoma
Conclusions: Tumor heterogeneity and enhancement on arterial phase imaging may be predictive markers of treatment response to DEB-TACE among patients with HCC. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Multislice Spiral Perfusion Computed Tomography to Assess Pancreatic Vascularity in Mild Acute Pancreatitis
This study aims to use perfusion computed tomography to compare pancreatic perfusion in mild acute pancreatitis (MAP) versus normal pancreas. Methods: This observational study included 39 patients with MAP and 18 patients with normal pancreatic function. Perfusion computed tomography parameters, including blood flow (BF), blood volume (BV), mean transit time, and permeability surface area product, were compared. Results: Both serum and urinary amylase levels were significantly higher in patients with MAP than in controls (all Ps (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Computed Tomography–Guided Tumor Ablation: Analysis and Optimization of Computed Tomography Technique With Various Ablation Devices
Purpose: Ablation device-associated computed tomography beam hardening artifacts can make tumor margin visualization and its relationship to the ablation applicator tip challenging. Determine optimal scanning conditions for currently-used applicators. Materials and Methods: Eleven applicators were placed in ex vivo cow livers with implanted mock tumors, surrounded by bolus gel. Various computed tomography scans were performed at 440 mA with 5 mm thickness changing kVp (80, 100, 120, 140), scan time (0.5, 0.7, 1.0, 2.0 seconds), adaptive statistical iterative reconstruction (ASiR) (30, 60, 90), scan type (helical, axial), ...
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Evaluation of the Relationships Between Computed Tomography Features, Pathological Findings, and Prognostic Risk Assessment in Gastrointestinal Stromal Tumors
Objectives: The aim of this study was to correlate computed tomography (CT) findings with pathology in gastrointestinal stromal tumors (GISTs). Methods: A retrospective evaluation of CT images of 44 patients with GISTs was performed. Computed tomography findings analyzed were location, size, margins, degree and pattern of contrast enhancement, angiogenesis, necrosis, signs of invasion, peritoneal effusion, peritoneal implants, surface ulceration, and calcifications. Associations between CT features and mitotic rate, Miettinen classes of risk, lesions size, and among CT features were investigated. χ2 Test and Fisher t...
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

A Comparison of the Image Quality and Radiation Dose With Routine Computed Tomography and the Latest Gemstone Spectral Imaging Combination of Different Scanning Protocols in Computed Tomography Angiography of the Kidney
The objective of our study was to compare the image quality and radiation dose of computed tomography angiography (CTA) of the kidney in patients with different body mass indexes using routine CT and the latest gemstone spectral imaging (GSI) combination of different scanning protocols with the adaptive statistical iterative reconstruction 2.0 algorithm. Methods: A total of 90 patients who had undergone a CTA of the kidney were divided into 3 groups (A, B, and C), with 30 patients in each group. Group A underwent a routine CT examination, whereas groups B and C underwent GSI with different scanning protocols. All images w...
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Abdominal Imaging Source Type: research

Submillisievert Computed Tomography of the Chest Using Model-Based Iterative Algorithm: Optimization of Tube Voltage With Regard to Patient Size
Conclusions: Model-based algorithm allows for submillisievert chest CT in average patients; the use of 100 kVp is recommended. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Pleural Metastasis in Head and Neck Cancer: Imaging Findings and Clinical Impact
Conclusions: The presence of pleural metastasis in head and neck cancer is an extremely poor prognostic indicator for survival. They are potentially missed on the neck CT. Given its significant clinical impact, head and neck radiologists should specifically look for pleural metastasis when reviewing imaging studies of patients with head and neck cancer. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

The Effect of Heart Rate on Exposure Window and Best Phase for Stress Perfusion Computed Tomography: Lessons From the CORE320 Study
Objectives: The aim of this study is to evaluate the effect of heart rate on exposure window, best phase, and image quality for stress computed tomography perfusion (CTP) in the CORE320 study. Methods: The CTP data sets were analyzed to determine the best phase for perfusion analysis. A predefined exposure window covering 75% to 95% of the R-R cycle was used. Results: Of the 368 patients included in the analysis, 93% received oral β blockade before the rest scan. The median heart rate during the stress acquisition was 69 bpm (interquartile range [IQR], 60–77). The median best phase was 81% (IQR, 76–90), ...
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Effect of Coronary Artery Calcification Score by Lifestyle and Correlation With Coronary Artery Stenosis by Multidetector Computed Tomography
Conclusions: In conclusion, coronary artery calcification score CT is deemed to be a suitable method for the estimation of coronary artery stenosis with short examination time, low radiation exposure, and noninvasive method. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Cardiothoracic Imaging Source Type: research

Proton Magnetic Resonance Spectroscopy–Detected Changes of Marrow Fat Content in a Rabbit Model of Osteoporosis Treated With Epigallocatechin-3-Gallate
Objective: The aim of this study was to longitudinally evaluate the changes in marrow fat content of ovariectomized (OVX) rabbits treated with epigallocatechin-3-gallate (EGCG) using proton magnetic resonance spectroscopy (1H-MRS). Methods: Thirty-six female New Zealand rabbits were equally divided into sham operation, OVX controls, and OVX treated with EGCG (intraperitoneally, 1.8 mg/kg) for 5 months. Marrow fat fraction by 1H-MRS and bone density by peripheral quantitative computed tomography were determined at 0, 3, and 5 months. Serum biomarkers and marrow adipocytes were determined at the end of experiment. Results:...
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Musculoskeletal Radiology Source Type: research

Computed Tomography and Magnetic Resonance Imaging Characteristics of Peripheral Primitive Neuroectodermal Tumor: A Retrospective Analysis of 16 Cases
Conclusions: Peripheral primitive neuroectodermal tumor should be suggested as an important differential diagnosis when the tumor presents as a large, ill-defined solid mass with aggressive extension and significant enhancement. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Musculoskeletal Radiology Source Type: research

Bone Mineral Density Estimations From Routine Multidetector Computed Tomography: A Comparative Study of Contrast and Calibration Effects
Conclusions: Our data suggest that internal calibration driven BMD measurements derived from contrast-enhanced MDCT need the same amount of post hoc contrast-effect adjustment as measurements using phantom calibration. Adjustment using linear correction equations can correct for systematic bias of bone density variations related to contrast application, irrespective of the calibration technique used. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Musculoskeletal Radiology Source Type: research

Magnetic Resonance Imaging Findings of Ischiofemoral Impingement in Patients With Inflammatory Myositis: An Observational Study
Conclusions: Magnetic resonance imaging findings of IFI are present in 11% of IM patients and are independently associated with fatty atrophy of hip stabilizing muscles. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Musculoskeletal Radiology Source Type: research

Influence of Age on Healing Capacity of Acute Tears of the Anterior Cruciate Ligament Based on Magnetic Resonance Imaging Assessment
Objective: The purpose of this study was to evaluate the influence of patient age on the effects of conservative treatment of the anterior cruciate ligament (ACL). Methods: A total of 102 consecutive patients with acute ACL injury were allowed to heal without surgery. Final magnetic resonance imaging images of the ACL were classified from grade I, indicating good morphological recovery, to grade IV, indicating poor recovery. Chi-square analysis was used to determine significant differences in the incidence of grades I and II among those less than 20 versus those 20 years or more of age. Results: The mean follow-up to fin...
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Musculoskeletal Radiology Source Type: research

High-Resolution Diffusion-Weighted Imaging Improves the Diagnostic Accuracy of Dynamic Contrast-Enhanced Sinonasal Magnetic Resonance Imaging
Object: The aim of the study was to evaluate the incremental value of high-resolution diffusion-weighted imaging and apparent diffusion coefficient (ADC) mapping compared with that of dynamic contrast-enhanced (DCE) sinonasal magnetic resonance imaging (MRI) in the characterization of benign versus malignant sinonasal tumors at 3.0T. Materials and Methods: Ninety-eight patients (61 females, 37 males; mean age, 48 years) with sinonasal lesions who underwent high-resolution DW-MRI and DCE-MRI were included in this study. The lesions were divided into malignant and benign groups on the basis of pathological examination. In t...
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Characterization of Thyroid Nodules by 4-Dimensional Computed Tomography: Initial Experience
Conclusions: Our initial experience with a small group of patients was unable to support the use of 4DCT for characterizing thyroid nodules; however, precontrast nodule attenuation was significantly lower in malignant nodules when compared with benign nodules. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Magnetic Resonance Imaging Features of Solitary Hypothalamitis
Conclusions: Magnetic resonance imaging, particularly postcontrast MRI, is the optimal modality for assessment of hypothalamic lesions. Peripheral enhancement with polygon sign and optic tract or chiasm edema without visual impairment are highly suggestive of hypothalamitis. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Non-Gaussian Diffusion Imaging Shows Brain Myelin and Axonal Changes in Obstructive Sleep Apnea
Conclusions: Axial kurtosis and RK measures showed widespread changes over Gaussian-based techniques, suggesting a more sensitive nature of kurtoses to injury. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Shortened Mean Transit Time in CT Perfusion With Singular Value Decomposition Analysis in Acute Cerebral Infarction: Quantitative Evaluation and Comparison With Various CT Perfusion Parameters
Conclusions: A region of shortened MTT indicated obstructed blood flow, which was attributed to the singular value decomposition method error. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - March 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Procedure Oriented Torsional Anatomy of the Forearm for Spasticity Injection: Erratum
No abstract available (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2017 Category: Radiology Tags: Erratum Source Type: research

Contrast-Enhanced High-Pitch Computed Tomography in Pediatric Patients Without Electrocardiography Triggering and Sedation: Comparison of Cardiac Image Quality With Conventional Multidetector Computed Tomography
Objective: The aim of this study was to compare image quality of anatomical cardiac details without electrocardiography triggering, sedation, or heart rate–regulating drugs in contrast-enhanced pediatric chest computed tomography (CT), using high-pitch CT (HPCT) versus conventional pitch-mode technique (multidetector CT [MDCT]). Methods: After written informed consent, 55 patients (median age, 11 years; range, 3–17 years) were prospectively included in this institutional review board–approved study. Patients underwent clinically indicated, contrast-enhanced MDCT or HPCT of the chest. Image quality was a...
Source: Journal of Computer Assisted Tomography - January 1, 2017 Category: Radiology Tags: Cardiovascular Radiology Source Type: research

Can Discrepancies Between Coronary Computed Tomography Angiography and Cardiac Catheterization in High-Risk Patients be Overcome With Consensus Reading?
Conclusions: Both coronary CTA interpretations were concordant with catheterization for severe stenosis in three quarters of patients. However, the diagnostic profile of the 2 interpretations differed, with higher sensitivity for the clinical report. This supports the clinical practice, which favored overestimation of difficult to quantify stenoses. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2017 Category: Radiology Tags: Cardiovascular Radiology Source Type: research

Computation of Calcium Score With Dual-Energy Computed Tomography: A Phantom Study
Abstract: Dual-energy computed tomography (DECT) improves material and tissue characterization compared with single-energy CT; we sought to validate coronary calcium quantification in advancing cardiovascular DECT. In an anthropomorphic phantom, agreement between measurements was excellent, and Bland-Altman analysis demonstrated minimal bias. Compared with the known calcium mass for each phantom, calcium mass by DECT was highly accurate. Noncontrast DECT yields accurate calcium measures and warrants consideration in cardiac protocols for additional tissue characterizations. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2017 Category: Radiology Tags: Cardiovascular Radiology Source Type: research

Aortic Valve and Thoracic Aortic Calcification Measurements: How Low Can We Go in Radiation Dose?
Conclusions: Iterative reconstruction enables AVC and TAC quantification on CT at submillisievert dose. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2017 Category: Radiology Tags: Cardiovascular Radiology Source Type: research

Computed Tomographic Angiography of the Abdomen and Pelvis in Azotemic Patients Utilizing 80-kV(p) Technique and Reduced Dose Iodinated Contrast: Comparison With Routine 120-kV(p) Technique
Objective: To evaluate image quality (IQ) of a reduced contrast volume, low kilovolt (peak) [kV(p)] abdominopelvic computed tomographic angiography (AP-CTA) protocol compared to a standard 120-kV(p) AP-CTA protocol. Methods: A retrospective image analysis was performed on 103 patients with end-stage renal disease who underwent AP-CTA. Forty-nine patients were scanned at 80 kV(p) with a mean of 48 mL of contrast, and 54 patients were scanned at 120 kV(p) with a mean of 98 mL of contrast. Objective comparison of arterial attenuation, noise, and contrast-to-noise ratio was obtained, in addition to radiation dose. Subjective ...
Source: Journal of Computer Assisted Tomography - January 1, 2017 Category: Radiology Tags: Cardiovascular Radiology Source Type: research

Magnetic Resonance Imaging Features of Intramedullary Schwannomas
Conclusions: A tumor located in the dorsolateral spinal cord, causing expansion of the cord, with hypointense areas on T2-weighted and obviously enhancement, should arise suspicion of an intramedullary schwannoma. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Characterization of Parotid Tumors With Dynamic Susceptibility Contrast Perfusion-Weighted Magnetic Resonance Imaging and Diffusion-Weighted MR Imaging
Conclusions: Dynamic susceptibility contrast-enhanced perfusion-weighted MR imaging and diffusion-weighted MR imaging are noninvasive promising methods that are used for differentiation of malignant from benign parotid tumors and for characterization of some benign parotid tumors. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

A Large Cohort Study of 18F Fluoro-Deoxy-Glucose Uptake in Normal Spinal Cord: Quantitative Assessment of the Contamination From Adjacent Vertebral Marrow Uptake and Validity of Normalizing the Cord Uptake Against the Lumbar Thecal Sac
Conclusions: Of the variables studied, only contamination from adjacent vertebral marrow activity significantly affected the SUVmax of spinal cord. This contamination should be corrected for when reporting spinal cord FDG uptake. Lumbar thecal sac is not a valid reference for normalizing spinal cord FDG uptake. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2017 Category: Radiology Tags: Neuroradiology Source Type: research

Does Acromion Morphology Depend on the Extremity or on Gender in the Population?
Objective: The aims were to study the acromion parameters in the population and to assess the extremity or sex variation in the acromion morphology. Methods: The lateral acromion angle (LAA) and the acromion index (AI) were assessed in a computed tomographic scan database of 250 individuals in the age group of 20 to 49 years. For the analysis of LAA and AI, 286 and 234 shoulders were available, respectively. Results: The LAA was 73.6 ± 6.6 degrees; 73.7 ± 6.9 and 72.5 ± 6.1 degrees for the right and left shoulder, respectively. The AI was 0.755 ± 0.12; 0.82 ± 0.12 and 0.69 ± 0.12...
Source: Journal of Computer Assisted Tomography - January 1, 2017 Category: Radiology Tags: Musculoskeletal Radiology Source Type: research

Adhesive Capsulitis of the Shoulder Joint: Value of Glenohumeral Distance on Magnetic Resonance Arthrography
Objective: To evaluate the usefulness of glenohumeral distance (GHD) on axial images of magnetic resonance (MR) arthrography for diagnosis of adhesive capsulitis and to compare this finding with previously reported classic MR arthrographic findings of adhesive capsulitis. Materials and Methods: Our study was approved by the institutional ethical review board of our institute. We evaluated 41 patients (M-F, 35:6; mean age, 46 years; adhesive capsulitis, 21; no adhesive capsulitis, 20) who underwent MR arthrography. Two radiologists measured GHD, width of the axillary recess, and capsular thickness in consensus. The GHD was...
Source: Journal of Computer Assisted Tomography - January 1, 2017 Category: Radiology Tags: Musculoskeletal Radiology Source Type: research