Featured Research

from universities, journals, and other organizations

Adaptive statistical iterative reconstruction technique reduces radiation dose associated with coronary CTA by 27 percent

Date:
August 20, 2010
Source:
American College of Radiology / American Roentgen Ray Society
Summary:
A new low-dose coronary computed tomography angiography (CTA) technique called adaptive statistical iterative reconstruction can reduce the radiation dose associated with coronary CTA by 27 percent, according to a new study. Coronary CTA is a common heart imaging test that helps determine if fatty or calcium deposits have narrowed a patient's coronary arteries.

A new low-dose coronary computed tomography angiography (CTA) technique called adaptive statistical iterative reconstruction (ASIR) can reduce the radiation dose associated with coronary CTA by 27 percent, according to a study in the September issue of the American Journal of Roentgenology. Coronary CTA is a common heart imaging test that helps determine if fatty or calcium deposits have narrowed a patient's coronary arteries.

Related Articles


ASIR is a technique that allows radiologists to reduce the noise in an image and improve image quality (like adjusting a TV antenna to make a "fuzzy" image sharper) while reducing the radiation dose.

The large multicenter study included 574 patients undergoing coronary CTA at three imaging centers. Comparisons were performed between consecutive groups initially using the standard CTA method using filtered back projection (FBP) and subsequently ASIR with regard to patient and scan characteristics, radiation dose, and diagnostic study quality.

"There was a 44 percent reduction in the median radiation dose between the FBP and ASIR cohorts (4.1 mSv vs. 2.3 mSv)," said Jonathon Leipsic, MD, lead author of the study. "After adjustment for scan settings, ASIR was associated with a 27 percent reduction in radiation dose compared with FBP," he said.

"Our study results show that ASIR permits reduction in tube current while imparting a statistically significant reduction in radiation dose due to the direct relationship between tube current and dose," said Leipsic.

"ASIR represents a novel method of radiation dose reduction that appears additive to existing techniques," he said.


Story Source:

The above story is based on materials provided by American College of Radiology / American Roentgen Ray Society. Note: Materials may be edited for content and length.


Cite This Page:

American College of Radiology / American Roentgen Ray Society. "Adaptive statistical iterative reconstruction technique reduces radiation dose associated with coronary CTA by 27 percent." ScienceDaily. ScienceDaily, 20 August 2010. <www.sciencedaily.com/releases/2010/08/100820115040.htm>.
American College of Radiology / American Roentgen Ray Society. (2010, August 20). Adaptive statistical iterative reconstruction technique reduces radiation dose associated with coronary CTA by 27 percent. ScienceDaily. Retrieved November 26, 2014 from www.sciencedaily.com/releases/2010/08/100820115040.htm
American College of Radiology / American Roentgen Ray Society. "Adaptive statistical iterative reconstruction technique reduces radiation dose associated with coronary CTA by 27 percent." ScienceDaily. www.sciencedaily.com/releases/2010/08/100820115040.htm (accessed November 26, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Wednesday, November 26, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

Newsy (Nov. 25, 2014) — The US FDA is announcing new calorie rules on Tuesday that will require everywhere from theaters to vending machines to include calorie counts. Video provided by Newsy
Powered by NewsLook.com
Daily Serving Of Yogurt Could Reduce Risk Of Type 2 Diabetes

Daily Serving Of Yogurt Could Reduce Risk Of Type 2 Diabetes

Newsy (Nov. 25, 2014) — Need another reason to eat yogurt every day? Researchers now say it could reduce a person's risk of developing type 2 diabetes. Video provided by Newsy
Powered by NewsLook.com
Madagascar Working to Contain Plague Outbreak

Madagascar Working to Contain Plague Outbreak

AFP (Nov. 24, 2014) — Madagascar said Monday it is trying to contain an outbreak of plague -- similar to the Black Death that swept Medieval Europe -- that has killed 40 people and is spreading to the capital Antananarivo. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com
Are Female Bosses More Likely To Be Depressed?

Are Female Bosses More Likely To Be Depressed?

Newsy (Nov. 24, 2014) — A new study links greater authority with increased depressive symptoms among women in the workplace. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins