News | January 06, 2010

Physiologic Factors Affect CT Coronary Artery Images

January 6, 2010 - The image quality of multidetector computed tomography (MDCT) scans used for the noninvasive detection of coronary artery disease can be significantly affected by patient characteristics, such as ethnicity, body mass index (BMI), and heart rate. Researchers explained the details of these findings from a large multicenter international trial in the January issue of the American Journal of Roentgenology.

The large multicenter international trial study included 291 patients with coronary artery calcification and found that compared with examinations of white patients, studies of black patients had significantly poorer image quality.

In the study, led by Melvin E. Clouse, M.D., researchers found that diagnostic accuracy of MDCT are limited by physiologic factors when compared conventional invasive coronary angiography. These factors included high heart rate, arrhythmia, obesity, and high coronary calcium burden with motion. The study was significant because it showed a relevant influence of BMI, heart rate, ethnicity, and breathing artifact on the degradation of image quality.

Dr. Clouse added that the diagnostic ability of any imaging method is directly dependent on image quality.

For more information: www.jacr.org

Related Content

Johns Hopkins Medicine First in U.S. to Install Canon Medical's Aquilion Precision
News | Computed Tomography (CT) | March 26, 2019
Johns Hopkins Medicine now has access to the first Ultra-High Resolution computed tomography (UHR CT) system for...
Siemens Healthineers Debuts Cardiovascular Edition of Somatom go.Top CT
News | Computed Tomography (CT) | March 14, 2019
Siemens Healthineers will introduce the Somatom go.Top Cardiovascular Edition, a new version of its established...
Canon Medical Introduces Deep Learning-Based CT Image Reconstruction
News | Computed Tomography (CT) | February 27, 2019
Canon Medical Systems recently introduced AiCE (Advanced intelligent Clear IQ Engine), a deep convolutional neural...
SCCT Releases New Guideline for CT Use During TAVR
News | Computed Tomography (CT) | January 08, 2019
The Society of Cardiovascular Computed Tomography (SCCT) has released a new expert consensus document for computed...
A CT calcium scoring image showing calcified plaques in coronary vessel segments. The higher the calcium content of the vessels, the high risk the patient is for a heart attack event. CAC exam

A CT calcium scoring image showing calcified plaques in coronary vessel segments. The higher the calcium content of the vessels, the higher risk the patient is for a heart attack event. Image courtesy of Canon Medical Systems.

Feature | Computed Tomography (CT) | October 17, 2018 | Dave Fornell, Editor
A picture is worth a thousand words, and to patients concerned about their health, detailed images of the coronary an
Abdominal Aortic Calcification May Signal Future Heart Attack

Image from computed tomography (CT) colonography shows segmented abdominal aortic calcification measured with semiautomated CT tool on coronal image. Within region of interest over aorta selected by user, tool automatically segments and quantifies aortic calcification (shown in blue). 

Image Credit: O’Connor S D, Graffy P M, Zea R, et al. Does nonenhanced CT-based quantification of abdominal aortic calcification outperform the Framingham Risk Score in predicting cardiovascular event sin asymptomatic adults? Radiology doi: 10.1148/radiol.2018180562. Published online Oct. 2, 2018. © RSNA.

News | Computed Tomography (CT) | October 12, 2018
Computed tomography (CT)-based measures of calcification in the abdominal aorta are strong predictors of heart attacks...
Siemens Healthineers Announces First U.S. Install of Somatom go.Top CT
News | Computed Tomography (CT) | September 17, 2018
September 17, 2018 — The Ohio State University Wexner Medical Center in Columbus recently became the first healthcare
Key Patient Preparations for a CT Scan
News | Computed Tomography (CT) | September 05, 2018
The Center for Diagnostic Imaging (CDI) in Miami recently released a list of important preparations patients should...
Overlay Init