MRI is currently the standard imaging modality for spinal tumors as it delineates the accurate spinal anatomy and classifies it as being an intra/extramedullary and intradural/extradural in location, the extent of involvement and associated findings like cord edema/ syringomyelia which aid to establish a preliminary preoperative diagnosis for further surgical management. Since the abnormalities seen on PET/MRI may sometimes be less extensive than the abnormalities seen on MRI, PET and MRI may synergistically demonstrate discretely the most metabolically active part of the tumor, edema and other cord changes being non-avid. Since residual intramedullary tumors of the spinal cord are not always easily distinguished from radionecrosis, PET/MRI could add useful information in the assessment of residual/recurrent disease post-treatment.
30 year old male, Recurrent ependymoma cord (D12-L, lesion). Post op / RT. PET /MRI done was done for evaluation.
Magnetic susceptibility artifacts due to metallic fixation plates seen at D12-L1 level obscuring details. Nodular soft tissue lesion/deposit is seen(A, B, C) at the operated site posteriorly in the thecal sac indenting the CONUS: recurrent/residual.
Multiple enhancing and FDG avid nodular meningeal deposits are seen along the entire cord indenting it prominently at C4/5 level with underlying cord changes extending from C2/3 to C6/7 level (C, D) s/o with recurrent ependymoma.
This short PET-MRI Scan case was compiled by Dr. Sangeeta Taneja and Dr. Amarnath Jena (Nuclear Medicine Physician at PET-Suite @ Indraprastha Apollo Hospital, Sarita Vihar).
Read More about PET-MRI Scan at House Of Diagnostics in Delhi and NCR.
The Simultaneous PET-MRI Scan is currently offered at PET-Suite at Apollo Hospital, Sarita Vihar.