H. Schirrmeister et al., F-18 PET IMAGING - FREQUENCY, DISTRIBUTION AND APPEARANCE OF BENIGN LESIONS, RoFo. Fortschritte auf dem Gebiete der Rontgenstrahlen und der neuenbildgebenden Verfahren, 169(3), 1998, pp. 310-314
Citations number
21
Categorie Soggetti
Radiology,Nuclear Medicine & Medical Imaging
Journal title
RoFo. Fortschritte auf dem Gebiete der Rontgenstrahlen und der neuenbildgebenden Verfahren
Purpose: We evaluated the frequency, distribution and appearance of be
nign lesions in F-18-PET scans. Methods: Between March 1996 and May 19
97, 18F-PET scans were performed in 59 patients in addition to convent
ional planar bone scintigraphy. Eleven patients were subjected to addi
tional SPECT imaging. The main indication was searching for bone metas
tases (58 pat.). The diagnosis was confirmed radiologically. Results:
With F-18-PET in 39 patients (66,1%) 152 benign lesions, mostly locate
d in the spine were detected. Tc-99m bone scans revealed 45 lesions in
10 patients. Osteoarthritis of the intervertebral articulations (69%)
or of the acromioclavicular joint (15%) were the most common reasons
for degenerative lesions detected with F-18-PET. Osteophytes appeared
as hot lesions located at two adjacent vertebral endplates. Osteoarthr
itis of the intervertebral articulations showed an enhanced tracer upt
ake at these localizations, whereas endplate fractures of the vertebra
l bodies appeared very typical; solitary fractures of the ribs could n
ot be differentiated from metastases. Rare benign lesions were not stu
died. Conclusion: Most of the degenerative lesions (84%) detected with
F-18-PET had a very typical appearance and could be detected with the
improved spatial resolution and advantages of a tomographic technique
. F-18-PET had an increased accuracy in detecting degenerative bone le
sions.