A Geometric Model for the Lumen of Blood Vessels in X-ray Angiography
نویسندگان
چکیده
We have developed a model for representing the image of segments of blood vessels in x-ray angiograms, and a software package for generating the model from digitized angiograms. The model is based on projections of linearly tapering cylinders and is suitable for the analysis of vessel lumen position, size and shape. This is of interest for research into the disease atherosclerosis. The system has been validated using a set of post mortem samples. The accuracy of representation of the lumen radius is between + 0% and +10% (95% confidence limits) and the accuracy of simple shape information is 81%.
منابع مشابه
Evaluating Gamma-H2AX Expression as a Biomarker of DNA Damage after X-ray in Angiography Patients
Objective: Coronary heart disease (CHD) is one of the most common diseases. Coronary angiography (CAG) is an important apparatus used to diagnose and treat this disease. Since angiography is performed through exposure to ionizing radiation, it can cause harmful effects induced by double-stranded breaks in DNA which is potentially life-threatening damage. The aim of the present study is to inves...
متن کاملبررسی میزان پرتو پراکنده Xو دوز دریافتی کارکنان بخش آنژیوگرافی یک بیمارستان نظامی
Background and aims: Using X-ray for diagnostic test, is one of the most important exposure to radiation sources for general population and in particular for radiation workers. Therefore, holding down the pollution at the lowest possible level is very important for protection against the internal exposure. The objective of this study is to survey the scattered X-ray rate and received dose by st...
متن کاملExperimental Study of Geometric Parameters of transverse Steps on High Speed vessels drag at different deadrise angle of the vessels body
By investigating the research in the field of planing vessels, limited research has been conducted to investigate the behavior and other hydromantic parameters. Given that such vessels can have better hydrodynamic performance than similar vessels, research and study is one of the needs and priorities of designers. With this purpose, this study examines the effects of the transverse steps hydrod...
متن کاملIn-House Handmade Camera for Indocyanine Green Video Angiography
Background and Aim: Vascular imaging during surgical procedures is very important and has many applications. There are several methods for intraoperative vascular assessment such as intraoperative angiography, Doppler, and fluorescence-based techniques. The latter group and specially the Indocyanine Green (ICG) Video Angiography (VA) is commonly used for vascular surgery and sentinel node...
متن کاملمطالعه ارتباط تعداد عروق کرونر درگیر با برخی عوامل خطر با استفاده از روش آنژیوگرافی
Background and Aim: Despite the information regarding CAD risk factors, there isn't agreement between the relation of this risk factors and coronary artery diseases. This study was done for determination of related factors with vessels involved in coronary artery angiography. Materials and Methods: In this descriptive and analytical study, 2390 patients' .were selected via census sampling from...
متن کامل