While radiotracer scintigraphy has previously been useful in initial detection of PVNS and other tumors, (11,12) fluorodeoxyglucose-positron imaging tomography (FDG-PET
) can serve as a clinically useful noninvasive assessment of the degree of malignancy, although it is primarily used to monitor tumors with an established diagnosis.
Of the three tests, the FDG-PET
scan provided doctors the most information to help detect AD in patients with MCI.
Normally, involvement of the temporal artery is difficult to see on FDG-PET
due to its small diameter, but involvement of the aorta, subclavian, carotid, and iliac arteries is enough to settle the diagnosis GCA based on FDG-PET
In a study comparing FDG-PET-CT, MRI, bone scan, and computerized tomography in 11 patients, the authors could show that FDG-PET
has a sensitivity of 92% and specificity of 100%, and in 3 patients FDG-PET-CT allowed a more precise anatomic localization of lesions .
"We have shown that gene expression profiling can subclassify FDG-PET
metabolic responders into those patients that will and will not subsequently go on to have a [radiologic] response.
The studies being reported this week show a comparison of ASL-MRI and FDG-PET
in a group of Alzheimer's patients and age-matched controls.
The FDDNP-PET scans were more accurate than FDG-PET
scans and MR at detecting differences among the subjects.
had a sensitivity of 96.3%, a specificity of 90%, and an accuracy of 93%.
The finding of negative FDG-PET
results in patients who showed no signs of disease within nine months or more of follow-up was important, Dehdashti notes.
(31) Another study that compared [.sup.18]FDG-PET scans with MRIs separately and side-by-side found FDG-PET
to be superior for lesion surveillance because of a lower number of post-chemotherapy, false-positive findings.
HRS (Heart Rhythm Society) 2014 yilinda kardiyak sarkoidoz tanisi icin sonuc kararinda, kardiyak sarkoidozda FDG-PET
'de patchy (yamali) kardiyak uptake'i tanisal klinik kriterler arasinda koymustur (15).
Schuster et al., "Octreoscan Versus FDG-PET
for Neuroendocrine Tumor Staging: A Biological Approach," Annals of Surgical Oncology, vol.