PMID- 34070698 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210615 IS - 2077-0383 (Print) IS - 2077-0383 (Electronic) IS - 2077-0383 (Linking) VI - 10 IP - 11 DP - 2021 May 25 TI - Role of 11C Methionine Positron Emission Tomography (11CMETPET) for Surgery and Radiation Therapy Planning in Newly Diagnosed Glioblastoma Patients Enrolled into a Phase II Clinical Study. LID - 10.3390/jcm10112313 [doi] LID - 2313 AB - (1) Background: We investigated the role of [11C]-methionine PET in a cohort of newly diagnosed glioblastoma multiforme (GBM) patients to evaluate whether it could modify the extent of surgical resection and improve radiation therapy volume delineation. (2) Methods: Newly diagnosed GBM patients, ages 18-70, with a Karnofsky performance scale (KPS) >/= 70 with available MRI and [11C]-methionine PET were included. Patients were treated with different amounts of surgical resection followed by radio-chemotherapy. The role of [11C]-methionine PET in surgical and RT planning was analyzed. A threshold of SUVmax was searched. (3) Results: From August 2013 to April 2016, 93 patients were treated and included in this analysis. Residual tumor volume was detected in 63 cases on MRI and in 78 on [11C]-methionine PET, including 15 receiving gross total resection. The location of uptake was mainly observed in FLAIR abnormalities. [11C]-methionine uptake changed RT volume in 11% of patients. The presence of [11C]-methionine uptake in patients receiving GTR proved to influence survival (p = 0.029). The threshold of the SUVmax conditioning outcome was five. (4) Conclusions: [11C]-methionine PET allowed to detect areas at higher risk of recurrence located in FLAIR abnormalities in patients affected by GBM. A challenging issue is represented by integrating morphological and functional imaging to better define the extent of surgical resection to perform. FAU - Pessina, Federico AU - Pessina F AD - Neurosurgery Department, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy. AD - Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, 20090 Milan, Italy. FAU - Navarria, Pierina AU - Navarria P AUID- ORCID: 0000-0002-6913-1442 AD - Radiotherapy and Radiosurgery Department, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy. FAU - Clerici, Elena AU - Clerici E AD - Radiotherapy and Radiosurgery Department, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy. FAU - Bellu, Luisa AU - Bellu L AUID- ORCID: 0000-0002-7286-4014 AD - Radiotherapy and Radiosurgery Department, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy. FAU - Franzini, Andrea AU - Franzini A AD - Neurosurgery Department, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy. FAU - Milani, Davide AU - Milani D AD - Neurosurgery Department, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy. FAU - Simonelli, Matteo AU - Simonelli M AUID- ORCID: 0000-0002-5264-1251 AD - Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, 20090 Milan, Italy. AD - Oncology and Hematology Department, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy. FAU - Persico, Pasquale AU - Persico P AUID- ORCID: 0000-0003-2446-8604 AD - Oncology and Hematology Department, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy. FAU - Politi, Letterio S AU - Politi LS AUID- ORCID: 0000-0002-6190-6688 AD - Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, 20090 Milan, Italy. AD - Neuroradiology Department, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy. FAU - Casarotti, Alessandra AU - Casarotti A AD - Neurosurgery Department, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy. FAU - Fernandes, Bethania AU - Fernandes B AUID- ORCID: 0000-0002-4327-1586 AD - Pathology Department, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy. FAU - Olei, Simone AU - Olei S AD - Neurosurgery Department, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy. FAU - Sollini, Martina AU - Sollini M AD - Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, 20090 Milan, Italy. AD - Diagnostic Imaging Department, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy. FAU - Chiti, Arturo AU - Chiti A AD - Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, 20090 Milan, Italy. AD - Pathology Department, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy. FAU - Scorsetti, Marta AU - Scorsetti M AD - Neurosurgery Department, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy. AD - Radiotherapy and Radiosurgery Department, IRCCS Humanitas Research Hospital, Rozzano, 20089 Milan, Italy. LA - eng PT - Journal Article DEP - 20210525 PL - Switzerland TA - J Clin Med JT - Journal of clinical medicine JID - 101606588 PMC - PMC8198980 OTO - NOTNLM OT - [11C]-methionine PET OT - newly diagnosed glioblastoma OT - radiation therapy OT - supratotal resection OT - surgery COIS- The authors declare no conflict of interest. EDAT- 2021/06/03 06:00 MHDA- 2021/06/03 06:01 PMCR- 2021/05/25 CRDT- 2021/06/02 01:29 PHST- 2021/03/30 00:00 [received] PHST- 2021/05/20 00:00 [revised] PHST- 2021/05/21 00:00 [accepted] PHST- 2021/06/02 01:29 [entrez] PHST- 2021/06/03 06:00 [pubmed] PHST- 2021/06/03 06:01 [medline] PHST- 2021/05/25 00:00 [pmc-release] AID - jcm10112313 [pii] AID - jcm-10-02313 [pii] AID - 10.3390/jcm10112313 [doi] PST - epublish SO - J Clin Med. 2021 May 25;10(11):2313. doi: 10.3390/jcm10112313.