TY - JOUR
T1 - Clinical impact of PET/MR imaging in patients with cancer undergoing same-day PET/CT
T2 - Initial experience in 134 patients-a hypothesis-generating exploratory study
AU - Catalano, Onofrio A.
AU - Rosen, Bruce R.
AU - Sahani, Dushyant V.
AU - Hahn, Peter F.
AU - Guimaraes, Alexander R.
AU - Vangel, Mark G.
AU - Nicolai, Emanuele
AU - Soricelli, Andrea
AU - Salvatore, Marco
PY - 2013/12
Y1 - 2013/12
N2 - Purpose: To compare the clinical impact of combined positron emission tomography (PET) and magnetic resonance (MR) imaging to that of combined PET and computed tomography (CT) performed on the same day in patients with cancer. Materials and Methods: This HIPAA-compliant retrospective study was approved by the institutional review board. Patients gave written informed consent for study enrollment, including the possibility to use their imaging and clinical data in future evaluations. A total of 134 patients with cancer with a non-central nervous system primary neoplasm underwent same-day fluorodeoxyglucose (FDG) PET/CT and FDG PET/MR imaging. PET/CT and PET/MR studies were independently interpreted by teams of radiologists and nuclear medicine physicians. Four readers, divided into two teams composed of one radiologist and one nuclear medicine physician each, read all 134 studies. The referring physician classified discordance between PET/CT and PET/MR observations either as findings affecting clinical management or as findings not affecting clinical management. Data were compared with the χ2 test. Results: Findings affecting clinical management were noted for PET/CT studies but not for PET/MR studies in two (1.5%) of 134 patients and for PET/MR studies but not for PET/ CT studies in 24 (17.9%) of 134 patients. The discrepancies between findings affecting clinical management detected with PET/MR imaging over those detected with PET/CT were significant (P < .001). Conclusion: In these patients, PET/MR imaging alone contributed to clinical management more often than did PET/CT alone. PET/MR imaging provides information that affects the care of patients with cancer and is unavailable from PET/CT.
AB - Purpose: To compare the clinical impact of combined positron emission tomography (PET) and magnetic resonance (MR) imaging to that of combined PET and computed tomography (CT) performed on the same day in patients with cancer. Materials and Methods: This HIPAA-compliant retrospective study was approved by the institutional review board. Patients gave written informed consent for study enrollment, including the possibility to use their imaging and clinical data in future evaluations. A total of 134 patients with cancer with a non-central nervous system primary neoplasm underwent same-day fluorodeoxyglucose (FDG) PET/CT and FDG PET/MR imaging. PET/CT and PET/MR studies were independently interpreted by teams of radiologists and nuclear medicine physicians. Four readers, divided into two teams composed of one radiologist and one nuclear medicine physician each, read all 134 studies. The referring physician classified discordance between PET/CT and PET/MR observations either as findings affecting clinical management or as findings not affecting clinical management. Data were compared with the χ2 test. Results: Findings affecting clinical management were noted for PET/CT studies but not for PET/MR studies in two (1.5%) of 134 patients and for PET/MR studies but not for PET/ CT studies in 24 (17.9%) of 134 patients. The discrepancies between findings affecting clinical management detected with PET/MR imaging over those detected with PET/CT were significant (P < .001). Conclusion: In these patients, PET/MR imaging alone contributed to clinical management more often than did PET/CT alone. PET/MR imaging provides information that affects the care of patients with cancer and is unavailable from PET/CT.
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U2 - 10.1148/radiol.13131306
DO - 10.1148/radiol.13131306
M3 - Article
C2 - 24009348
AN - SCOPUS:84890038096
SN - 0033-8419
VL - 269
SP - 857
EP - 869
JO - RADIOLOGY
JF - RADIOLOGY
IS - 3
ER -