Navigation Links
MRI/PET scanner combo
Date:3/7/2008

Two kinds of body imaging -- positron emission tomography (PET) and magnetic resonance imaging (MRI) -- have been combined for the first time in a single scanner.

MRI scans provide exquisite structural detail but little functional information, while PET scans -- which follow a radioactive tracer in the body -- can show body processes but not structures, said Simon Cherry, professor and chair of biomedical engineering at UC Davis. Cherry's lab built the scanner for studies with laboratory mice, for example in cancer research.

"We can correlate the structure of a tumor by MRI with the functional information from PET, and understand what's happening inside a tumor," Cherry said.

Combining the two types of scan in a single machine is difficult because the two systems interfere with each other. MRI scanners rely on very strong, very smooth magnetic fields that can easily be disturbed by metallic objects inside the scanner. At the same time, those magnetic fields can seriously affect the detectors and electronics needed for PET scanning. There is also a limited amount of space within the scanner in which to fit everything together, Cherry noted.

Scanners that combine computer-assisted tomography (CAT) and PET scans are already available, but CAT scans provide less structural detail than MRI scans, especially of soft tissue, Cherry said. They also give the patient a dose of radiation from X-rays.

The photomultiplier tubes used in conventional PET machines are very sensitive to magnetic fields. So the researchers used a new technology -- the silicon avalanche photodiode detector -- in their machine. They were able to show that the scanner could acquire accurate PET and MRI images at the same time from test objects and mice.


'/>"/>

Contact: Andy Fell
ahfell@ucdavis.edu
530-752-4533
University of California - Davis
Source:Eurekalert

Page: 1

Related medicine news :

1. RemoteScan - Scanner Connectivity Software for EMR (Electronic Medical Record) Systems
2. Sheffield engineers have big ideas for the latest in medical scanners
3. Diagnostic Centers of America Retains NewsMark Public Relations to Showcase Its Rise as Only Medical Facility in South Florida With Worlds Most Advanced Cardiac Scanner
4. Delray Beach Mayor Commemorates Diagnostic Centers of America (DCA) $2 Million Purchase from Siemens to Become Only Medical Facility in South Florida with Worlds Most Advanced Cardiac Scanner.
5. Naviscans PEM Flex(TM) Scanner Shows Promising New Data in Breast Cancer Management
6. Community Hospital of Long Beach - Help Us Win an MRI Scanner!
7. MEDRAD Announces eCoil(TM) for Siemens, Philips 3.0T MR Scanners
8. Treatment Combo for Pancreatic Cancer Has Limited Benefit
9. Raised Breast Cancer Risk Persists After Combo HRT Stopped
10. Combo Treatment Best for Melanoma, Advanced Ovarian Cancer
11. Drug Combo Tied to Kidney Risk With Some Cardiac Surgeries
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/19/2017)... ... 19, 2017 , ... DMG Productions, producers of the award ... an upcoming episode, slated to air fourth quarter 2017. Check your local listings ... a company committed to supporting dentistry using the most technologically advanced restorative materials ...
(Date:8/19/2017)... (PRWEB) , ... August 19, 2017 , ... Curl Keeper® ... of NaturallyCurly.com® The Curl Leaders, Editors’ Choice 2017 Award for the second year in ... for hair stylists and curlies alike was voted Best Moisturizer for Type 2 Wavies ...
(Date:8/19/2017)... ... August 19, 2017 , ... “Congratulations! It's A Boy! God’s Gift: ... both their parents and God. “Congratulations! It's A Boy! God’s Gift: A Story of ... from Long Island, New York. , Published by Christian Faith Publishing, Dale Anthony and ...
(Date:8/18/2017)... NY (PRWEB) , ... August 18, 2017 , ... ... of “Vision & Hearing” campaign, advocating for active, healthy lifestyles and highlighting the ... available for individuals with hearing impairments and shares the latest innovations in hearing ...
(Date:8/18/2017)... VA (PRWEB) , ... August 18, 2017 , ... ... asset protection services and financial consultations to communities throughout the greater DC region, ... K9 with the goal of rescuing local animals and training them to be ...
Breaking Medicine News(10 mins):
(Date:8/2/2017)... Aug. 2, 2017 CaryRx, a next-generation full-service pharmacy, ... service for patients in the Washington D.C. ... pharmacy by providing delivery of medications through the convenience of ... delivery or delivered within one hour to any location in ... to bring this invaluable service to Washington D.C. ...
(Date:7/28/2017)... July 28, 2017 Hill-Rom Holdings, Inc. ("Hill-Rom") ... third quarter ended June 30, 2017, and updated its ... For the fiscal third quarter, Hill-Rom ... $0.68 per diluted share in the prior-year period. These ... $0.39 per diluted share primarily related to the non-cash ...
(Date:7/26/2017)... 2017  Radium Medical Aesthetics, a leading medical aesthetic clinic in ... by effectively addressing several skin conditions from the inside. ... and more fragile. The skin becomes more transparent due to the ... harmful UV rays from the sun contributes to aging skin, causing ... ...
Breaking Medicine Technology: