Featured Research

from universities, journals, and other organizations

Iterative Reconstruction Technique Significantly Reduces Patient Radiation Dose During CT Scans

Date:
August 22, 2009
Source:
American Roentgen Ray Society
Summary:
Computed tomography (CT) scans are responsible for more than two thirds of the total radiation dose associated with medical imaging exams. However, a newly adapted low-dose technique called adaptive statistical iterative reconstruction may enable radiologists to reduce patient radiation resulting from CT up to 65 percent, according to a new study.

Computed tomography (CT) scans are responsible for more than two thirds of the total radiation dose associated with medical imaging exams. However, a newly adapted low-dose technique called adaptive statistical iterative reconstruction (ASIR) may enable radiologists to reduce patient radiation resulting from CT up to 65 percent, according to a study published in the September issue of the American Journal of Roentgenology (AJR).

Related Articles


Iterative reconstruction 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 significantly reducing the radiation dose.

CT scans using the newly adapted low-dose ASIR method and the standard dose method without ASIR were performed both on a phantom and 12 patients. "We found nearly identical image quality using the reduced dose CT method with ASIR compared with the standard dose CT method without ASIR," said Amy Hara, MD, lead author of the study, performed at the Mayo Clinic Arizona in Scottsdale. "In our study, patient radiation doses were reduced up to 65 percent using the low-dose IR method. The average radiation dose delivered during the low-dose CT with IR was 470 mGy; the average dose delivered using the standard dose CT without IR was 894 mGy," she said.

"Finding a way to reduce radiation dose for routine body CT imaging has been an ongoing concern for many. Our study is significant because it shows that the low-dose ASIR method can significantly decrease the radiation dose along with the many risks associated with radiation exposure. In future studies, it will be important to not only evaluate image quality but to assess diagnostic accuracy. ASIR is new to CT but in our practice it has been very successful," said Dr. Hara.


Story Source:

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


Cite This Page:

American Roentgen Ray Society. "Iterative Reconstruction Technique Significantly Reduces Patient Radiation Dose During CT Scans." ScienceDaily. ScienceDaily, 22 August 2009. <www.sciencedaily.com/releases/2009/08/090819064022.htm>.
American Roentgen Ray Society. (2009, August 22). Iterative Reconstruction Technique Significantly Reduces Patient Radiation Dose During CT Scans. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2009/08/090819064022.htm
American Roentgen Ray Society. "Iterative Reconstruction Technique Significantly Reduces Patient Radiation Dose During CT Scans." ScienceDaily. www.sciencedaily.com/releases/2009/08/090819064022.htm (accessed October 25, 2014).

Share This



More Health & Medicine News

Saturday, October 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

IKEA Desk Converts From Standing to Sitting With One Button

IKEA Desk Converts From Standing to Sitting With One Button

Buzz60 (Oct. 24, 2014) IKEA is out with a new convertible desk that can convert from a sitting desk to a standing one with just the push of a button. Jen Markham explains. Video provided by Buzz60
Powered by NewsLook.com
Ebola Protective Suits Being Made in China

Ebola Protective Suits Being Made in China

AFP (Oct. 24, 2014) A factory in China is busy making Ebola protective suits for healthcare workers and others fighting the spread of the virus. Duration: 00:38 Video provided by AFP
Powered by NewsLook.com
WHO: Millions of Ebola Vaccine Doses by 2015

WHO: Millions of Ebola Vaccine Doses by 2015

AP (Oct. 24, 2014) The World Health Organization said on Friday that millions of doses of two experimental Ebola vaccines could be ready for use in 2015 and five more experimental vaccines would start being tested in March. (Oct. 24) Video provided by AP
Powered by NewsLook.com
Doctor in NYC Quarantined With Ebola

Doctor in NYC Quarantined With Ebola

AP (Oct. 24, 2014) An emergency room doctor who recently returned to the city after treating Ebola patients in West Africa has tested positive for the virus. He's quarantined in a hospital. (Oct. 24) Video provided by AP
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