Low Radiation Dose and High Image Quality of 320-Row Coronary Computed Tomography Angiography Using a Small Dose of Contrast Medium and Refined Scan Timing Prediction

Objective The aim of the study was to investigate the feasibility of coronary computed tomography (CT) angiography with a low kilovoltage peak scan and a refined scan timing prediction using a small contrast medium (CM) dose. Methods In protocol A, 120-kVp scanning and a standard CM dose were used. The scan timing was fixed. In protocol B, 80 kVp and a 60% CM dose were used. The scan timing was determined according to the interval from the CM arrival to the peak time in the ascending aorta. We measured the CT number and recorded the radiation dose. Results Higher CT numbers were observed in the left circumflex (proximal, P = 0.0235; middle, P = 0.0007; distal, P
Source: Journal of Computer Assisted Tomography - Category: Radiology Tags: Cardiovascular Imaging Source Type: research

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ConclusionSurgical clipping remains a safe and useful treatment option for pericallosal artery aneurysms in a low-resource neurosurgical facility.
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
Authors: Al-Rudaini HEA, Han P, Liang H Abstract BACKGROUND: CT Angiography (CTA) of aortoiliac and lower extremity arteries is a relatively recent innovation of CT imaging that has changed after the introduction of multi-detector row scanners. OBJECTIVE: The study aimed to evaluate the diagnostic accuracy of Multidetector Computed Tomographic Angiography (MDCTA) in the assessment of arterial tree in patients with Peripheral Arterial Occlusive Disease (PAOD), as compared to Digital Subtraction Angiography (DSA). METHODS: A single-center nonrandomized prospective study was conducted on 50 patients complainin...
Source: Current Medical Imaging Reviews - Category: Radiology Tags: Curr Med Imaging Rev Source Type: research
We present the first case with history of repaired coarctation with multiple spontaneous intercostal artery aneurysmal rupture.
Source: The Annals of Thoracic Surgery - Category: Cardiovascular & Thoracic Surgery Source Type: research
Authors: Z S, J F, R K, F K, S K, A T, S R Abstract Introduction: Diabetes mellitus has assumed the status of an epidemic in the last century. High prevalence of diabetes in South Asian population and presence of other cardiovascular risk factors in this region, make up the relationship between coronary artery disease (CAD) and diabetes more pronounced. Keeping in view the high susceptibility of diabetic patients for CAD, these patients are recognized as a high risk group .Emphasis has been laid on the early recognition of CAD, even in silent or asymptomatic state. Coronary artery calcium scoring (CACS), owing to i...
Source: Journal of the Association of Physicians of India - Category: General Medicine Tags: J Assoc Physicians India Source Type: research
ConclusionsSuccess of these developments should lead to the following benefits: (1) eliminate unnecessary invasive coronary angiography in patients with no significant lesions, (2) avoid stenting physiologically insignificant lesions, (3) guide percutaneous coronary interventions process to the location of significant lesions, (4) provide a flow-color-coded 3D roadmap of the entire coronary tree to guide bypass surgery, and (5) use less radiation and lower the cost from unnecessary procedures.Trial registryThe DEMYSTIFY study has been registered on ClinicalTrials.gov with registration number NCT04221594.
Source: Journal of Nuclear Cardiology - Category: Nuclear Medicine Source Type: research
We present the first case with history of repaired coarctation with multiple spontaneous intercostal artery aneurysmal rupture. PMID: 32035043 [PubMed - as supplied by publisher]
Source: The Annals of Thoracic Surgery - Category: Cardiovascular & Thoracic Surgery Authors: Tags: Ann Thorac Surg Source Type: research
Conclusion: By taking advantage of the capabilities of fully integrated PET/MRI, we developed a fully automated computational pipeline that allows the noninvasive determination of regional CMRGlc values in a clinical setting. This methodology might facilitate the proliferation of fully quantitative imaging into the clinical arena and, as a result, might contribute to improved diagnostic efficacy.
Source: Journal of Nuclear Medicine - Category: Nuclear Medicine Authors: Tags: Clinical Source Type: research
ConclusionIt is preferable to perform CCTA in young patients with cardiac symptoms, especially in Asian and Middle Eastern countries even of the CAC score is zero.
Source: European Journal of Radiology Open - Category: Radiology Source Type: research
We describe a case of aggressive progression of TA in an infant. This child was the youngest to be affected with the disease as reported in the literature. A 3.5-month-old boy presented with cyanosis of both legs, tachycardia and antithrombin III deficiency. Computed tomography angiography (CTA) revealed thrombosis of distal aorta and both iliac arteries. Thrombectomy was performed at the level of both common femoral arteries. In addition, thigh amputation of the left leg had to be performed. TA was diagnosed postmortem with thrombosis of the distal aorta, its branches and upper mesenteric artery which was not occluded on ...
Source: Acta Clinica Croatica - Category: General Medicine Tags: Acta Clin Croat Source Type: research
This study sought to derive and validate a systematic method enabling AVC quantification using computed tomography angiography (CTA) in patients with AS.Methods134 consecutive patients with AS who underwent both NCCT and CTA were included in the study and sub-divided into derivation (n=71) and validation cohorts (n=63). On NCCT, AVC was quantified using Agatston method utilizing the software developed for semi-automatic assessment of coronary calcium. On CTA, mean contrast attenuation of aorta (AortaHU) and standard deviation (SD) was measured in the region-of-interest at level of sinotubular junction.ResultsUsing an adjus...
Source: The Annals of Thoracic Surgery - Category: Cardiovascular & Thoracic Surgery Source Type: research
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