The use of PET imaging increased rapidly from 2004 through 2008 among Medicare beneficiaries diagnosed with cancer, according to a study published in the January issue of Journal of the American College of Radiology. The researchers surmised that PET primarily serves as an additional, rather than replacement, imaging exam.
FDG uptake of thymus measured by PET/CT is an effective indicator for the differentiation of mediastinal lymphoma from normal thymus in pediatric patients, according to a study published online Dec. 12 in Radiology.
Written by James Brice
Slowly but steadily, radiation oncologists are adopting PET and PET/CT to measure the early response of cancers to radiotherapy and other treatments. And progress has been significant.
PET imaging is showing a 7 percent average annual growth rate from 2008 to 2010, which is a decrease from the average annual rate of 10.4 percent from 2005 to 2008, according to IMV's research report, 2011 PET Market Summary Report.
Researchers found low fetal radiation exposures in a retrospective study assessing the effects of F-FDG PET studies performed on pregnant patients with cancer, according to findings published in the July issue of the Journal of Nuclear Medicine.
After surviving childhood cancer, patients who experience a subsequent neoplasm face a large increase in the risk of developing additional neoplasms, with more than one-quarter developing third or subsequent tumors, and particularly high rates found among those treated for nonmelanoma skin cancers, according to the authors of a large study published June 27 in the Journal of Clinical Oncology.
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Written by C.P. Kaiser
While PET/CT is commonly and very successfully used for the staging and follow-up of cancers, researchers are seeking ways to make the modality more sensitive and specific by using targeted radiotracers and refining scanning techniques.
Written by Clint vanSonnenberg
Radiation was brought to the fore within pediatric nuclear medicine following the release of a 2008 study which revealed a chaotic disarray of administered doses within North America’s premier pediatric institutions, including radiopharmaceutical doses varying by factors of as much as 10 in most children and by up to 20 in infants (J Nucl Med 2008; 49:1024–1027).
Overall cancer incidence in the U.S. decreased by nearly 1 percent per year between 2003 and 2007, with mortality falling by twice that figure across all four years, thanks largely to advances in diagnostic imaging, showed the findings of a report published in the April edition of the Journal of the National Cancer Institute.
Whole body diffusion-weighted MRI in lymphoma patients may yield staging results largely equal to those of the standard 18F-FDG PET/CT, while delivering no radiation and a more economical alternative, according to a study published in the March issue of the American Journal of Roentgenology. However, further studies are required to confirm the role of MRI.
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