Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
Email Facebook Twitter Google+ LinkedIn Comments

Study: PET-CT Work Better Than PET Alone
Dec 2002
BALTIMORE, Md., Dec. 4 -- Johns Hopkins radiologists say a combination of positron emission tomography (PET) and computed tomography (CT) detects the spread of cancer better than PET alone.

In a study to be presented at the Radiological Society of North America tomorrow, researchers reported that overall, PET-CT improves the ability to distinguish cancerous from normal tissue and to locate metastases, or where they have spread. The study used a scanner that fuses CT technology, which provides anatomical detail, with PET images, which detect metabolic activity of tumors.

"PET-CT was very specific, as it was able to distinguish cancer from noncancer 100 percent of the time (10 of 10), while PET alone was specific for cancer only 50 percent of the time (two of four)," said Richard L. Wahl, M.D., director of the division of nuclear medicine at Johns Hopkins. Routine contrast-enhanced CT was able to find disease in three of the five false negatives produced by PET-CT.

"The CT portion of combined PET-CT scanners is very helpful at locating disease, but it could miss some lesions that can be found with contrast-enhanced CT," says Elliot K. Fishman, M.D., director of diagnostic imaging and body CT for the Kimmel Cancer Center at Johns Hopkins.
The researchers said more studies are needed to determine the value of combined PET/CT over PET alone and over CT.

A second study by Wahl and Fishman being presented at the meeting shows how whole-body CT provides a 19 percent improvement over combined PET-CT in detecting colorectal cancer recurrence.

For more information, visit:

Basic ScienceNews & Features

Terms & Conditions Privacy Policy About Us Contact Us
back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2019 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA,

Photonics Media, Laurin Publishing
x We deliver – right to your inbox. Subscribe FREE to our newsletters.
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.