Navigation Links
Improved lesion detection with time-of-flight PET scans affirmed
Date:3/2/2011

For the first time, quantitativenot qualitativedata analysis has demonstrated that time-of-flight (TOF) positron emission tomography (PET) scans can improve cancer detection. Research published in the March issue of the Journal of Nuclear Medicine shows that oncologic TOF fluorodeoxyglucose (FDG) PET scans yielded significant improvements in lesion detection of lung and liver cancers over all contrasts and body mass indexes.

Conventional PET scans create images by detecting gamma rays produced by radioisotopes that are injected into the body. Although these conventional scans track where the gamma rays go, they don't consider the time it takes for each gamma ray to reach the detector. TOF PET scans do take into account the travel time, which results in improved image signal-to-noise.

"What's aimed to objectively quantify the improvement in lesion detection that can be achieved with whole-body TOF FDG PET," said Joel S. Karp, one of the authors of the study "Improvement in Lesion Detection with Whole-Body Oncologic Time-of-Flight PET." "In contrast with previously published studies that reported comparison of TOF and non-TOF PET using simulated data or measured data with physical phantoms, this study used whole-body patient data in order to encompass unique about this study is that we a large range of realistic activity distributions and patient body types."

To create a lesion-present clinical study while ensuring perfect knowledge of the presence and location of each lesion, 10-mm spheric lesions were added to disease-free bed positions, yielding fused lesion-present studies. These studies appropriately corrected for the body's attenuation so that the presence or absence of the lesions was similar to that of actual patient studies.

TOF PET scans were done, and researchers used a numeric observeras opposed to a human observerto rapidly detect a large number of conditions. The TOF PET images were compared to conventional PET images (the same data reconstructed without TOF information) to determine improvement in lesion detection as a function of lesion location, scan time, contrast and body mass index.

Improved lesion detection was observed in the TOF PET scans, with the greatest gains achieved in the shortest-acquisition studies and in the subjects with a BMI of 30 or more. Also of notethe greatest gain in performance was achieved at the lowest lesion contrast and the smallest gain in performance at the highest lesion contrast.

Nuclear medicine technologists and physicians may be able to take advantage of the gain achieved with TOF PET to reduce scanning time, therefore increasing patient comfort and minimizing patient motion. They may also be able to reduce the injected radiopharmaceutical dose, thereby reducing the exposure of patients and health professionals to radiation.


'/>"/>

Contact: Susan Martonik
smartonik@snm.org
703-652-6773
Society of Nuclear Medicine
Source:Eurekalert

Related medicine news :

1. Exercise Success for People Over 50: Reports of Improved Fitness, Circulation and Balance
2. Medical Transcription Services and EHR Provider MxSecure Launches New Enhanced Website with Goal of Improved Physician Productivity
3. Small to Mid-Sized Hospitals Turn to Orion Health to Implement Health IT Solutions for Improved Patient Care and Outcomes
4. Drug Improved Survival in Mice With Cystic Fibrosis
5. The Logo Boutique.com Launches New and Improved Website
6. New Study: Improved Immune System with Gene-Eden, a Natural Antiviral Supplement that Targets Chronic Viruses
7. TeraMedica Unveils Improved Univision, Now Offering a Multi-Layer Enterprise Viewing Platform
8. An improved method for calculating tumor growth
9. Improved doctor-pharmacist collaboration needed: study
10. Improved patient care with telemonitoring
11. Improved device provides more rapid, comprehensive analysis of circulating tumor cells
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/27/2016)... ... 27, 2016 , ... TherapySites, the leading website ... Tennessee Counseling Association. This new relationship allows TherapySites to continue to ... adding exclusive benefits and promotional offers. , "TCA is extremely excited about this ...
(Date:6/26/2016)... ... June 26, 2016 , ... On June 10-11, 2016, A Forever ... Cereal Festival and World’s Longest Breakfast Table in Battle Creek, MI, where the rehabilitation ... as home to some of the world’s leading providers of cereal and other breakfast ...
(Date:6/25/2016)... ... June 25, 2016 , ... Experts ... applications at AcademyHealth’s Annual Research Meeting June 26-28, 2016, at the Hynes Convention ... health care topics including advance care planning, healthcare costs and patient and family ...
(Date:6/25/2016)... ... June 25, 2016 , ... As a lifelong Southern Californian, ... and his M.D from the David Geffen School of Medicine at UCLA. He trained ... Angeles to complete his fellowship in hematology/oncology at the UCLA-Olive View-Cedars Sinai program where ...
(Date:6/24/2016)... Marne, Michigan (PRWEB) , ... June 24, 2016 , ... ... To deal with these feelings, many turn to unhealthy avenues, such as drug or ... Center of Marne, Michigan, has released tools for healthy coping following a traumatic event. ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... ALEXANDRIA, Va. , June 24, 2016 ... a set of recommendations that would allow ... information (HCEI) with entities that make formulary and coverage ... determine the "value" of new medicines. The ... that does not appear on the drug label, a ...
(Date:6/24/2016)... CLEMENTE, Calif. , June 24, 2016  American Respiratory Labs ... company, is now able to perform sophisticated lung assessments in patients, ... Technologies , Inc. Patients are no longer limited ... ndd,s EasyOne PRO ® , ARL patients like Jeanne R. of ... done in the comfort of her own home. ...
(Date:6/24/2016)... India , June 24, 2016 ... Needles Market by Type (Standard Pen Needles, Safety Pen ... Therapy (Insulin, GLP-1, Growth Hormone), Mode of Purchase (Retail, ... by MarketsandMarkets, This report studies the market for the ... expected to reach USD 2.81 Billion by 2021 from ...
Breaking Medicine Technology: