Featured Research

from universities, journals, and other organizations

Low-dose CT Method, Delivering 50 Percent Less Radiation, Correctly Identifies Patients With Appendicitis

Date:
July 22, 2009
Source:
American Roentgen Ray Society
Summary:
Patients with possible appendicitis are typically evaluated using a standard-dose contrast enhanced CT, but a low-dose unenhanced CT that delivers approximately 50 percent less radiation is just as effective, according to a new study. The standard-dose enhanced CT scan delivers approximately 8.0 mSv of radiation; the low-dose unenhanced CT scan delivers approximately 4.2 mSv of radiation.

Patients with possible appendicitis are typically evaluated using a standard-dose contrast enhanced CT, but a low-dose unenhanced CT that delivers approximately 50% less radiation is just as effective, according to a study performed at the Seoul National University College of Medicine in Seoul, Korea. The standard-dose enhanced CT scan delivers approximately 8.0 mSv of radiation; the low-dose unenhanced CT scan delivers approximately 4.2 mSv of radiation.

A total of 78 patients with appendicitis were all evaluated using both the standard-dose and low-dose methods. CT images were then reviewed by two separate radiologists. Radiologist number one was able to correctly identify appendicitis in 77/78 patients using the low-dose unenhanced method and in 78/78 using the standard-dose enhanced method. Radiologist number two was able to correctly identify appendicitis in all 78 patients using both methods.

“Considering the high incidence of appendicitis in the general population and the rapidly increasing use of CT, small individual risks applied to such an increasingly large population may create a public health issue in the future,” said Kyoung Ho Lee, MD, lead author of the study.

“Low-dose unenhanced CT can potentially be used as the first line imaging test in patients suspected of having appendicitis,” he said.


Story Source:

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


Journal Reference:

  1. Hyobin Seo et al. Diagnosis of Acute Appendicitis With Sliding Slab Ray-Sum Interpretation of Low-Dose Unenhanced CT and Standard-Dose IV Contrast-Enhanced CT Scans. American Journal of Roentgenology, AJR 2009; 193:96-105 DOI: 10.2214/AJR.08.1237

Cite This Page:

American Roentgen Ray Society. "Low-dose CT Method, Delivering 50 Percent Less Radiation, Correctly Identifies Patients With Appendicitis." ScienceDaily. ScienceDaily, 22 July 2009. <www.sciencedaily.com/releases/2009/07/090722110854.htm>.
American Roentgen Ray Society. (2009, July 22). Low-dose CT Method, Delivering 50 Percent Less Radiation, Correctly Identifies Patients With Appendicitis. ScienceDaily. Retrieved April 21, 2014 from www.sciencedaily.com/releases/2009/07/090722110854.htm
American Roentgen Ray Society. "Low-dose CT Method, Delivering 50 Percent Less Radiation, Correctly Identifies Patients With Appendicitis." ScienceDaily. www.sciencedaily.com/releases/2009/07/090722110854.htm (accessed April 21, 2014).

Share This



More Health & Medicine News

Monday, April 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Nine-Month-Old Baby Can't Open His Mouth

Nine-Month-Old Baby Can't Open His Mouth

Newsy (Apr. 19, 2014) Nine-month-old Wyatt Scott was born with a rare disorder called congenital trismus, which prevents him from opening his mouth. Video provided by Newsy
Powered by NewsLook.com
'Holy Grail' Of Weight Loss? New Find Could Be It

'Holy Grail' Of Weight Loss? New Find Could Be It

Newsy (Apr. 18, 2014) In a potential breakthrough for future obesity treatments, scientists have used MRI scans to pinpoint brown fat in a living adult for the first time. Video provided by Newsy
Powered by NewsLook.com
Little Progress Made In Fighting Food Poisoning, CDC Says

Little Progress Made In Fighting Food Poisoning, CDC Says

Newsy (Apr. 18, 2014) A new report shows rates of two foodborne infections increased in the U.S. in recent years, while salmonella actually dropped 9 percent. Video provided by Newsy
Powered by NewsLook.com
Scientists Create Stem Cells From Adult Skin Cells

Scientists Create Stem Cells From Adult Skin Cells

Newsy (Apr. 17, 2014) The breakthrough could mean a cure for some serious diseases and even the possibility of human cloning, but it's all still a way off. 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:
from the past week

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