Navigation Links
PET scans useful for some cancer treatment, but how do patients fare?
Date:11/12/2007

Positron emission tomography or PET scans can help clinicians diagnose and treat some cancers, but it is not clear yet whether the imaging technology helps people with cancer live longer and healthier lives, according to a comprehensive review by the U.K. National Health Service.

PET scans are one of the latest tools used to detect and determine a cancers activity in the body. PET is generally more accurate than other imaging technologies such as computerized tomography (CT) or magnetic resonance imaging (MRI) scans. Using tiny radioactive elements, a PET scan can zero in on the distinctive biochemical fingerprints that distinguish cancerous cells from normal tissue.

The most common type of PET scan, called FDG-PET, appears to lead to the best therapy for patients who have a newer diagnosis of non-small cell lung cancer and in those who have undergone treatment for Hodgkins lymphoma. FDG-PET can also help identify the best treatment for patients with colorectal cancer, and it can detect small, potentially malignant lung growths called solitary pulmonary nodules, say review authors led by Karen Facey.

For other cancers, PET can often improve the accuracy of detecting a tumor, but it is unclear how this affects a patients treatment and ultimately their outcome, said Facey, an evidence-based health policy researcher.

The most reliable evidence would suggest that FDG-PET is cost-effective [in the United Kingdom] in non-small cell lung cancer and Hodgkins lymphoma, she added.

Facey said this is the first comprehensive review of PET for determining how well patients are responding to chemotherapy and for determining the sites for radiation therapy.

It has identified many interesting new studies, but these are difficult to interpret given their different designs, so theres a real need for larger, better quality studies of this kind to be performed in the U.K., she said.

The review is published in the latest issue of Health Technology Assessment, the international journal series of the Health Technology Assessment programme, part of the National Institute for Health Research in the United Kingdom.

Facey and colleagues combed through the results of six systematic reviews and 158 primary studies that examined the effect of PET scans on the management of breast, colorectal, head and neck, lung, lymphoma, melanoma, esophageal and thyroid cancers.

For instance, did PET scans diagnose these cancers better than an MRI or CT scan" Could a PET scan give a better idea of a cancers severity or spread" Would they be better than other imaging techniques at detecting the recurrence of a cancer or monitoring a tumors response to treatment"

For many of the cancers examined in the review, the answers are still inconclusive and require larger, more careful study, the HTA authors found.

While research continues, physicians are already using combination PET/CT scans to help diagnose and treat cancer patients. Facey and colleagues also reviewed this new technology and say that the PET/CT scans appear to be slightly more accurate so far.

In September, the Society of Nuclear Medicine, whose members use PET technology, updated its scope of practice guidelines to reflect this trend.

Since many of the state-of-the-art nuclear medicine cameras as well as PET scanners have CT scanners attached to them, performing CT scans becomes one of the nuclear medicine technologists tasks, said Cindi Luckett-Gilbert, the chair of the societys special task force on the scope of practice.


'/>"/>

Contact: Lisa Esposito
hbns-editor@cfah.org
Center for the Advancement of Health
Source:Eurekalert

Related medicine news :

1. European directive will halt use of MRI scans; cancer diagnosis and treatment will suffer
2. PET scans can accurately detect a breast tumors response to chemotherapy
3. High-tech CT scans: not a bad choice to test for clogged arteries
4. New Computerized Scans Effective for Spotting Clogged Arteries
5. Study suggests existing drugs may be useful in treating brain tumors
6. CAD plus MDCT useful in finding lung nodules
7. Conventional prognostic factors fail to explain better prostate cancer survival in most Asian men
8. Survival differences by race most apparent in advanced stages of breast cancer
9. MRI finds breast cancer before it becomes dangerous
10. Investigators uncover intriguing clues to why persistent acid reflux sometimes turns into cancer
11. Pathway links inflammation, angiogenesis and breast cancer
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/17/2017)... ... January 17, 2017 , ... In the ... Activewear is a stand-out company for several differences from other mainstream brands. ... on demand, this is called 'Agile' manufacturing - http://www.leanproduction.com/agile-manufacturing.html . It allows ...
(Date:1/17/2017)... ... 17, 2017 , ... Healthful Balance announces the national release ... operated by Ed Stroup, was created to offer the highest quality vitamins and ... customer service. Healthful Balance products can be purchased online through their website, or ...
(Date:1/17/2017)... , ... January 17, 2017 , ... ... enthusiasts at the National Association of Music Merchants (NAMM) winter trade show, Booth ... 2017. , Etymotic’s ER•4® has long been the gold standard for high-definition, in-ear ...
(Date:1/17/2017)... ... , ... Mirror Mirror Beauty Boutique, Houston’s premiere CoolSculpting provider , is ... Crystal Rewards Program. Practice founder, Paul Vitenas, MD FACS, is delighted that Mirror Mirror ... Produced by Zeltiq, CoolSculpting is approved by the Food and Drug Administration as a ...
(Date:1/17/2017)... ... January 17, 2017 , ... Surgeons from New ... eye care practitioners on the latest breakthroughs in the prevention, diagnosis and treatment ... Symposium, according to eye surgeon, Jeffrey Martin, MD, FACS, Chief Executive Officer of ...
Breaking Medicine News(10 mins):
(Date:1/18/2017)... After the recent election cycle, it ... cannabis both for medical and recreational purposes are shifting. The ... the use of cannabis, but the focus is coming from ... Research, the North American legal cannabis market posted $6.7 billion ... The research projects sales will grow at a compound annual ...
(Date:1/18/2017)... National Regulatory Authority Chinese Food and Drug Administration ... Flanders Institute Food and Drug Administration FORT ... Alliance Glaxo Smith Klein GlaxoWellcome ... Japan Immune Targeting Systems Indian ... of oxford Johnson & Johnson Krka Pharmaceuticals ...
(Date:1/17/2017)... , Jan. 17, 2017 Secretary of ... Alcohol Programs Secretary Gary Tennis are warning ... following two recent overdose deaths from the drug in ... "Carfentanil is intended to sedate large animals and is ... anyone who comes into contact with it," Secretary Murphy ...
Breaking Medicine Technology: