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 December 17, 2014 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 December 17, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Wednesday, December 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

How Sony Hopes To Make Any Glasses 'Smart'

How Sony Hopes To Make Any Glasses 'Smart'

Newsy (Dec. 17, 2014) Sony's glasses module attaches to the temples of various eye- and sunglasses to add a display and wireless connectivity. Video provided by Newsy
Powered by NewsLook.com
Los Angeles Police To Receive 7,000 Body Cameras

Los Angeles Police To Receive 7,000 Body Cameras

Newsy (Dec. 17, 2014) Los Angeles Mayor Eric Garcetti announced the cameras will be distributed starting Jan. 1. Video provided by Newsy
Powered by NewsLook.com
Jaguar Unveils 360 Virtual Windshield Making Car Pillars Appear Transparent

Jaguar Unveils 360 Virtual Windshield Making Car Pillars Appear Transparent

Buzz60 (Dec. 17, 2014) Jaguar unveils a virtual 360 degree windshield that may be the most futuristic automotive development yet. Jen Markham explains. Video provided by Buzz60
Powered by NewsLook.com
Researchers Bring Player Pianos Back to Life

Researchers Bring Player Pianos Back to Life

AP (Dec. 17, 2014) Stanford University wants to unlock the secrets of the player piano. Researchers are restoring and studying self-playing pianos and the music rolls that recorded major composers performing their own work. (Dec. 17) 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


Space & Time

Matter & Energy

Computers & Math

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