Featured Research

from universities, journals, and other organizations

Evaluating The Urinary Tract System Using A Low Radiation Dose

Date:
August 28, 2007
Source:
American Roentgen Ray Society
Summary:
The split-bolus (cross sectional imaging) MDCT urography technique reduces both radiation dose and number of images produced, according to a recent study. CT urography had a sensitivity and specificity of 100% and 99%. It also depicted numerous other congenital and abnormalities of the urinary tract.

The split-bolus (cross sectional imaging) MDCT urography technique reduces both radiation dose and number of images produced, according to a recent study conducted by radiologists from Stanford University School of Medicine in Stanford, CA and VA Palo Alto Health Care System in Palo Alto, CA.

Related Articles


"Since CT urography was first conceived, in the late 90s, there have been a multitude of protocols described in the literature. The vast majority of these protocols entail scanning patients before contrast and at multiple phases after the administration of IV contrast," said Lawrence C. Chow, MD, lead author of the study. "We wanted to show that a similar examination could be achieved with fewer scan acquisitions [meaning potentially less radiation and fewer images] by administering a split-bolus of IV contrast, without sacrificing sensitivity," he said.

The study consisted of 500 patients with possible urinary tract abnormalities who underwent split-bolus CT urography. CT urography identified 100% of pathologically confirmed renal and ureteral malignancies. Fourteen of 19 confirmed cases of uroepithelial neoplasms involving the bladder were found.

"We believe that the use of CT urography results in a simplified diagnostic evaluation for patients with painless hematuria [presence of blood in the urine] and can potentially replace what previously required two studies: traditional excretory urography plus CT, MR or sonography," said Dr. Chow.

CT urography had a sensitivity and specificity of 100% and 99%. It also depicted numerous other congenital and abnormalities of the urinary tract.

"We were impressed with the wide spectrum of abnormalities which we were able to see with CT urography and with the ability of CT urography to detect even very small abnormalities such as papillary necrosis, renal tubular ectasia and very small urothelial tumors," he said.

The full results of this study appear in the August issue of the American Journal of Roentgenology, published by the American Roentgen Ray Society.


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. "Evaluating The Urinary Tract System Using A Low Radiation Dose." ScienceDaily. ScienceDaily, 28 August 2007. <www.sciencedaily.com/releases/2007/08/070828110638.htm>.
American Roentgen Ray Society. (2007, August 28). Evaluating The Urinary Tract System Using A Low Radiation Dose. ScienceDaily. Retrieved March 5, 2015 from www.sciencedaily.com/releases/2007/08/070828110638.htm
American Roentgen Ray Society. "Evaluating The Urinary Tract System Using A Low Radiation Dose." ScienceDaily. www.sciencedaily.com/releases/2007/08/070828110638.htm (accessed March 5, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Thursday, March 5, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Bupa Eyes India Healthcare Opportunities

Bupa Eyes India Healthcare Opportunities

Reuters - Business Video Online (Mar. 5, 2015) — Bupa is hoping to expand in India&apos;s fast-growing health insurance market, once a rule change on foreign investment is implemented. The British private healthcare group&apos;s CEO tells Grace Pascoe why it&apos;s so keen on the new opportunity. Video provided by Reuters
Powered by NewsLook.com
Doctor in Your Pocket Is Getting Smarter

Doctor in Your Pocket Is Getting Smarter

Reuters - Business Video Online (Mar. 5, 2015) — Mobile apps are turning smartphones into a personal doctors, with users able to measure heart rate, blood pressure and even blood sugar. But will it change our behaviour? Ivor Bennett reports from the Mobile World Congress in Barcelona. Video provided by Reuters
Powered by NewsLook.com
AbbVie Inks $21B Deal To Buy Cancer Drugmaker Pharmacyclics

AbbVie Inks $21B Deal To Buy Cancer Drugmaker Pharmacyclics

Newsy (Mar. 5, 2015) — AbbVie announced Wednesday it will buy cancer drugmaker Pharmacyclics in a $21 billion deal. Video provided by Newsy
Powered by NewsLook.com
Adults Only Get The Flu Twice A Decade, Researchers Say

Adults Only Get The Flu Twice A Decade, Researchers Say

Newsy (Mar. 4, 2015) — Researchers found adults only get the flu about once every five years. Scientists analyzed how a person&apos;s immunity builds up over time as well. 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