Journal of Computer Assisted Tomography This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

The Significance of Perfusion-Weighted Magnetic Resonance Imaging in Evaluating the Pathological Biological Activity of Cerebral Alveolar Echinococcosis
This study aimed to evaluate the value of perfusion-weighted magnetic resonance imaging (MR-PWI) in assessing cerebral alveolar echinococcosis (CAE) biological activity. Methods Totally, 15 cases of CAE patients who underwent surgery were enrolled. The MR-PWI perfusion parameters were measured and compared. Results The MR-PWI perfusion parameters cerebral blood flow (CBF), cerebral blood volume (CBV), and mean transit time were different among different areas. Their values were in the descending order of lesion marginal area> contralateral normal brain area> lesion center area. However, time-to-peak value was...
Source: Journal of Computer Assisted Tomography - January 1, 2022 Category: Radiology Tags: Neuroimaging: Brain Source Type: research

Predicting Subtype of Growth Hormone Pituitary Adenoma based on Magnetic Resonance Imaging Characteristics
This study aimed to investigate the value of magnetic resonance (MR) characteristics in differentiating the subtypes of growth hormone pituitary adenomas. Materials and Methods The clinical and MR imaging data of 70 patients with growth hormone pituitary adenoma confirmed by surgery and pathology were retrospectively analyzed. The tumors were divided into dense granular (DG; 36 cases) and sparse granular subtypes (SG; 34 cases). The tumors' MR features were analyzed, including the mean and maximum diameters, T2 signal intensity, T2 relative signal intensity (rSI), homogeneity, enhancement degree, and invasiveness (K...
Source: Journal of Computer Assisted Tomography - January 1, 2022 Category: Radiology Tags: Neuroimaging: Brain Source Type: research

Application of Contrast-Enhanced 3-Dimensional T2-Weighted Volume Isotropic Turbo Spin Echo Acquisition Sequence in the Diagnosis of Prolactin-Secreting Pituitary Microadenomas
This study aimed to investigate the value of contrast-enhanced 3-dimensional (3D) T2-weighted (T2W) Volume Isotropic Turbo Spin Echo Acquisition (VISTA) sequence in prolactin-secreting pituitary adenoma diagnosis. Methods We enrolled 158 patients with hyperprolactinemia. Coronal dynamic contrast-enhanced (DCE) T1 spin echo and T2W VISTA sequences were performed. The detection of pituitary microadenomas in 3 imaging groups (DCE magnetic resonance imaging [MRI], VISTA, and DCE MRI + VISTA) were compared using McNemar test and χ2 test. Results The DCE MRI + VISTA group detected 28 more pituitary microlesions th...
Source: Journal of Computer Assisted Tomography - January 1, 2022 Category: Radiology Tags: Neuroimaging: Brain Source Type: research

Toward an Intravoxel Incoherent Motion 2-in-1 Magnetic Resonance Imaging Sequence for Ischemic Stroke Diagnosis? An Initial Clinical Experience With 1.5T Magnetic Resonance
Objective This initial study aimed to investigate the feasibility of simultaneously measuring perfusion and diffusion including kurtosis features in acute ischemic stroke with the combined intravoxel incoherent motion and non-Gaussian diffusional kurtosis imaging (DKI-IVIM). Material and Methods Five ischemic stroke patients underwent a 4-minute diffusion weighted imaging (DWI) protocol, using 8 b values chosen with the Cramer-Rao-Lower-Bound optimization approach, in addition to conventional DWI and arterial spin labeling sequences. Regions of interest in pathological and control regions were analyzed with DKI-...
Source: Journal of Computer Assisted Tomography - January 1, 2022 Category: Radiology Tags: Neuroimaging: Brain Source Type: research

Grading Trigone Meningiomas Using Conventional Magnetic Resonance Imaging With Susceptibility-Weighted Imaging and Perfusion-Weighted Imaging
Conclusions Conventional MRI combined with dynamic susceptibility contrast and dynamic contrast-enhanced can help predict the World Health Organization grade of trigone meningiomas. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2022 Category: Radiology Tags: Neuroimaging: Brain Source Type: research

Is a Close Follow-Up Computed Tomography Necessary for Acute Falcine and Tentorial Subdural Hematoma?
Conclusions Based on our limited data, the current standard of F/U-CT may be unnecessary in patients with isolated F-SDH and/or T-SDH, which expand minimally along the short axis without a significant mass effect. Characteristic anatomic structure of the tentorium and falx, and their connectivity may direct SDH expansion and limit mass effect as well as injury to the adjacent parenchyma. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2022 Category: Radiology Tags: Neuroimaging: Brain Source Type: research

Normal Magnetic Resonance Imaging Appearance of Marrow Adjacent to the Sacroiliac Joints in Children During Development
Conclusions Healthy children and adolescents have increased T2 signal intensity within the sacral marrow adjacent to the sacroiliac joints, likely the vascular primary spongiosum, which is greater in adolescence compared with skeletal maturity. Knowledge of this normal pattern is beneficial in interpreting MRI examinations for the presence of sacroiliitis. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2022 Category: Radiology Tags: Musculoskeletal Imaging Source Type: research

Artificial Intelligence in Diagnostic Radiology: Where Do We Stand, Challenges, and Opportunities
Artificial intelligence (AI) is the most revolutionizing development in the health care industry in the current decade, with diagnostic imaging having the greatest share in such development. Machine learning and deep learning (DL) are subclasses of AI that show breakthrough performance in image analysis. They have become the state of the art in the field of image classification and recognition. Machine learning deals with the extraction of the important characteristic features from images, whereas DL uses neural networks to solve such problems with better performance. In this review, we discuss the current applications of ...
Source: Journal of Computer Assisted Tomography - January 1, 2022 Category: Radiology Tags: Informatics Source Type: research

Virtual Noncontrast Images Derived From Contrast-Enhanced Dual-Layer Spectral Abdominal Computed Tomography: A Pilot Study Between Pediatric and Adult Scans
Objective We aimed to compare the accuracy of virtual noncontrast (VNC) images obtained from contrast-enhanced dual-layer spectral computed tomography (DLSCT) scans of the abdomen between pediatric and adult patients. Methods We retrospectively studied 10 pediatric and 40 adult patients who underwent unenhanced and contrast-enhanced DLSCT for nontraumatic acute abdomen or a follow-up of tumor or aneurysm. On true noncontrast (TNC) and VNC images, we placed a region-of-interest on 7 abdominal structures. The mean attenuation difference between VNC and TNC images was compared between these structures and between p...
Source: Journal of Computer Assisted Tomography - January 1, 2022 Category: Radiology Tags: CT: Technology and Physics Source Type: research

Comparison of 100-Kilovoltage Tin Filtration With Advanced Modeled Iterative Reconstruction Protocol to an Automated Kilovoltage Selection With Filtered Back Projection Protocol on Radiation Dose and Image Quality in Pediatric Noncontrast-Enhanced Chest Computed Tomography
Objective The aim of the study was to compare effects of a 100-kilovoltage (kVp) tin filtration (Sn100kVp) with Advanced Modeled Iterative Reconstruction (ADMIRE) protocol to an automated kVp selection and filtered back projection (FBP) protocol on radiation dose and image quality of in noncontrast-enhanced pediatric chest computed tomography (CT). Methods This retrospective study included 55 children (12 ± 6 years) undergoing baseline imaging using automated kVp selection with FBP on a second-generation dual-source CT scanner and follow-up CT using Sn100kVp with ADMIRE on a third-generation dual-source CT scan...
Source: Journal of Computer Assisted Tomography - January 1, 2022 Category: Radiology Tags: CT: Radiation Dose Reduction Source Type: research

Clinical Evaluation of Left Ventricular Diastolic Function Using Phase-contrast Cine Cardiovascular Magnetic Resonance Imaging: A Comparison With Steady-state Free Precession Cine Cardiovascular Magnetic Resonance Imaging and Echocardiography
Conclusions Peak filling rate and E/A measurements using PC imaging with high temporal resolution is convenient and acceptably accurate, suggesting its potential for clinical use. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2022 Category: Radiology Tags: Cardiovascular: Cardiac Source Type: research

Feasibility of Aortic Annular Measurements Using Noncontrast-Enhanced Cardiac Computed Tomography in Preprocedural Evaluation of Transcatheter Aortic Valve Replacement: A Comparison With Contrast-Enhanced Computed Tomography
Conclusions Noncontrast-enhanced cardiac CT examination may be feasible for aortic annular measurements before TAVR and provides comparable measurement values to CE examination. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2022 Category: Radiology Tags: Cardiovascular: Cardiac Source Type: research

Third-Generation Dual-Source Computed Tomography for Coronary Angiography With Individually Tailored Scan Protocols Can Achieve a Low Radiation Dose With Good Image Quality in Unselected Patients
Conclusions Computed tomography angiography with BMI- and HR-tailored protocols offers good image quality with low radiation dose in unselected patients. (Source: Journal of Computer Assisted Tomography)
Source: Journal of Computer Assisted Tomography - January 1, 2022 Category: Radiology Tags: Cardiovascular: Angiography Source Type: research

Assessment of Image Quality of Coronary Computed Tomography Angiography in Obese Patients by Comparing Deep Learning Image Reconstruction With Adaptive Statistical Iterative Reconstruction Veo
Objective The aim of the study was to evaluate the image quality of coronary computed tomography (CT) angiography (CCTA) in obese patients by using deep learning image reconstruction (DLIR) in comparison with adaptive statistical iterative reconstruction Veo (ASiR-V). Methods We prospectively evaluated 60 obese patients (body mass index [BMI] ≥ 30 kg/m2) who underwent coronary CT angiography in a single center. All CT scans were performed with GE Revolution 256-row CT at 120 kV (group A; 20 men, 10 women; mean age = 54.3 years; mean BMI = 33.4 kg/m2) or 100 kV (group B; 18 men; 12 women; mean age = 56.8 years;...
Source: Journal of Computer Assisted Tomography - January 1, 2022 Category: Radiology Tags: Cardiovascular: Angiography Source Type: research

Ultrahigh-Resolution Computed Tomography Improves Preoperative Computed Tomography Angiography for Deep Inferior Epigastric Artery Perforator Flap Reconstruction
Objective The aim of the study was to compare computed tomography (CT) angiography (CTA) imaging of deep inferior epigastric artery perforator (DIEP) using the ultrahigh-resolution CT (UHRCT) and conventional multidetector CT (MDCT). Methods This retrospective study enrolled 20 patients who underwent CTA of DIEP flap with UHRCT and MDCT. Computed tomography values were measured at 4 large vessels (thoracic aorta, abdominal aorta, common iliac artery, and external iliac artery) and 5 peripheral vessels (proximal and distal internal thoracic artery, proximal and distal deep inferior epigastric artery, and DIEP). ...
Source: Journal of Computer Assisted Tomography - January 1, 2022 Category: Radiology Tags: Cardiovascular: Angiography Source Type: research