Navigation Links
New Heart CT Scans Deliver Far Less Radiation: Study

Imaging entire heart in one sitting reduces exposure time

TUESDAY, Feb. 23 (HealthDay News) -- The newest heart imaging CT technology exposes patients to as much as 91 percent less radiation than standard CT scanning, researchers say.

"Coronary CT angiography has generated great enthusiasm in recent years, due to its diagnostic accuracy in assessing patients with known or suspected coronary artery disease. However, that enthusiasm has been tempered by concern about the potentially high radiation dose received by patients," Dr. Andrew J. Einstein, an assistant professor of clinical medicine in radiology and director of cardiac CT research at Columbia University Medical Center, said in a news release.

Einstein and colleagues compared radiation exposure with a standard 64-detector row CT scanner -- which can image 4 centimeters of the heart at a time -- and a 320-detector row volume CT scanner, which can image 16 centimeters -- the entire length of the heart -- in a single rotation and within a single heartbeat.

"By imaging the entire heart in one piece, volume scanning eliminates artifacts due to seams or gaps between image sections. Moreover, the X-ray tube is left on for only a brief duration, as little as 0.35 seconds," Einstein said in a news release from the Radiological Society of North America.

The study, published in the March issue of Radiology, found that the effective radiation dose was 35.4 millisieverts for a 64-detector row helical scan and 4.4 mSv for a 320-detector row volume scan.

"As CT technology advanced from 16- to 64-slice capabilities, the radiation dose went up significantly. Today, technology development is going in the opposite direction, reducing radiation exposure," Einstein said.

More information

The U.S. Food and Drug Administration has more about CT scans.

-- Robert Preidt

SOURCE: Radiological Society of North America, news release, Feb. 23, 2010

Copyright©2010 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. ANT+ and iTMP Announce the Digifit™ Ecosystem - The First iPhone™ Apps to Integrate Running, Cycling and Heart Rate Monitoring
2. Changes during menopause increases risk of heart disease and stroke
3. Jiffy Lube(R) Well On Its Way to Raising Another $1 Million to Fight Heart Disease
4. Cristophe Salon in Beverly Hills Teams Up with Mad Men Actor to Help Raise Money for His 17-Year-Old Cousins Heart Transplant
5. Apex Heart Care, First Arizona Clinic to Install Shape-HF; New Medical Device Measures Patient Physiology to Define Shortness of Breath
6. Sacred Heart Medical Center Cited for Violation of Safety Standards in H1N1 Prevention
7. Early On, Hormone Therapy May Raise Womens Heart Risks
8. Happiness Protects Your Heart
9. Stereotaxis Procedure Prominently Featured on BBC Documentary From the Heart
10. “Hearts and Minds” Education Program Launched: On Average, People with Mental illness Live 25 Years Less than Other Americans
11. Americans Falling Short on Heart-Healthy Fruits and Vegetables
Post Your Comments:
(Date:11/30/2015)... , ... November 30, 2015 , ... Stress, anxiety, illness, ... a parent worry about possible tumors? , Heather Spader, MD, a new pediatric neurosurgeon ... are common, some signs might point to tumors. , “Bad headaches that ...
(Date:11/30/2015)... Minneapolis, MN (PRWEB) , ... November 30, 2015 ... ... launched at . The directory is specialized and only includes chiropractic ... is to find a competent and trustworthy alternative health practitioner when back pain ...
(Date:11/30/2015)... ... , ... The world of hair transplants and restoration is filled with methods ... procedures have been in use for many years and are among the most commonly ... has utilized many of these methods over the years, he also keeps an eye ...
(Date:11/30/2015)... ... 2015 , ... In an effort to make it easier ... information provided directly from top experts in mesothelioma, in 2016 the International ... major cities: Houston, San Francisco, and Chicago. , “For many mesothelioma patients ...
(Date:11/30/2015)... ... November 30, 2015 , ... According to an ... made a brave but slightly unusual choice to show her Instagram followers that the ... form may have been pre-mature. Saying that she didn’t “want to mislead any mommy's ...
Breaking Medicine News(10 mins):
(Date:11/30/2015)... TERRACE, Wash. and ST. LOUIS ... and Express Scripts (NASDAQ: ESRX ) today announced ... agreement. The partnership, which began in 1999, will now ... --> --> After evaluating pharmacy benefit ... Premera concluded that Express Scripts continues to offer the ...
(Date:11/30/2015)... NASHUA, N.H. , Nov. 30, 2015 /PRNewswire/ ... today that it will feature its latest solutions ... the early identification of cancer at the Radiological ... in Chicago from November ... showcase recent product advances including iReveal®, an automated ...
(Date:11/30/2015)... , Nov. 30, 2015 NHS ... further 20 TrueBeam™ machines from Varian Medical Systems ... ongoing program to replace older machines and institute ... the UK,s public hospitals. The order, placed in ... 50 licenses for Varian,s RapidArc® and Eclipse™ software ...
Breaking Medicine Technology: