Back to Search
Start Over
[(18)F]-fluoro-L-thymidine PET and advanced MRI for preoperative grading of gliomas.
- Source :
-
NeuroImage. Clinical [Neuroimage Clin] 2015 May 29; Vol. 8, pp. 448-54. Date of Electronic Publication: 2015 May 29 (Print Publication: 2015). - Publication Year :
- 2015
-
Abstract
- Purpose: Conventional MRI based on contrast enhancement is often not sufficient in differentiating grade II from grade III and grade III from grade IV diffuse gliomas. We assessed advanced MRI, MR spectroscopy and [(18)F]-fluoro-l-thymidine ([(18)F]-FLT) PET as tools to overcome these limitations.<br />Methods: In this prospective study, thirty-nine patients with diffuse gliomas of grades II, III or IV underwent conventional MRI, perfusion, diffusion, proton MR spectroscopy ((1)H-MRS) and [(18)F]-FLT-PET imaging before surgery. Relative cerebral blood volume (rCBV), apparent diffusion coefficient (ADC), Cho/Cr, NAA/Cr, Cho/NAA and FLT-SUV were compared between grades.<br />Results: Cho/Cr showed significant differences between grade II and grade III gliomas (p = 0.03). To discriminate grade II from grade IV and grade III from grade IV gliomas, the most relevant parameter was the maximum value of [(18)F]-FLT uptake FLTmax (respectively, p < 0.001 and p < 0.0001). The parameter showing the best correlation with the grade was the mean value of [(18)F]-FLT uptake FLTmean (R(2) = 0.36, p < 0.0001) and FLTmax (R(2) = 0.5, p < 0.0001).<br />Conclusion: Whereas advanced MRI parameters give indications for the grading of gliomas, the addition of [(18)F]-FLT-PET could be of interest for the accurate preoperative classification of diffuse gliomas, particularly for identification of doubtful grade III and IV gliomas.
- Subjects :
- Adult
Aged
Brain Neoplasms classification
Female
Glioma classification
Humans
Male
Middle Aged
Preoperative Period
Brain Neoplasms diagnosis
Dideoxynucleosides
Fluorine Radioisotopes
Glioma diagnosis
Magnetic Resonance Imaging methods
Magnetic Resonance Spectroscopy methods
Neoplasm Grading
Positron-Emission Tomography methods
Subjects
Details
- Language :
- English
- ISSN :
- 2213-1582
- Volume :
- 8
- Database :
- MEDLINE
- Journal :
- NeuroImage. Clinical
- Publication Type :
- Academic Journal
- Accession number :
- 26106569
- Full Text :
- https://doi.org/10.1016/j.nicl.2015.05.012