A CT number-controlling system for reproducibility of intracoronary CT number on follow-up coronary CT angiography

Quantitative Analysis of Coronary Vessels with Optimized Intracoronary CT Number

BACKGROUND Variability in intracoronary computed tomography (CT) number may influence vessel quantification. We confirmed the feasibility of a novel method for measuring vessel diameter and area using coronary CT angiography (CCTA) with an optimized intracoronary CT number, 350 HU. METHODS We performed intravascular ultrasound (IVUS) imaging in 52 patients with significant stenosis detected b...

Design and Fabrication Process of CT number Linearity and Homogeneity Phantom CT Scan

Introduction: One of the most valuable goals of phantoms, replacing with human goals in the field of research and quality control of diagnostic X-ray systems. There are various algorithms and methods for obtaining Homogeneity and CT number linearity for CT scan device. One of the most famous of these methods, the method is to use a uniform and homogeneous environment to comput...

CT functional imaging using intracoronary gradient analysis: an indispensable boost for CT coronary angiography.

The saga of CT coronary angiography continues and new exciting developments are on the horizon. We have witnessed the astounding rapid developments in CT technology from 4-, 16-, 64-, 128-, 256-, to 320-slice acquisition, with tube rotational speed increasing from 250 to 87 ms and with ever decreasing radiation exposure from 20 to ,1 mSv with the preservation of image quality. One would think t...

Coronary CT angiography.

Advances in multidetector CT (MDCT) technology with submillimeter slice collimation and high temporal resolution permit contrast-enhanced imaging of coronary arteries and coronary plaque during a single breath hold. Appropriate patient preparation, detailed technical and technological knowledge with regard to recognition of typical imaging artifacts (such as beam hardening or motion artifacts),...

Coronary CT versus MR angiography: pro CT--the role of CT angiography.