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Simultaneous whole-body 18F-PSMA-1007-PET/MRI with integrated high-resolution multiparametric imaging of the prostatic fossa for comprehensive oncological staging of patients with prostate cancer: a pilot study

IntroductionThe aim of the present study was to explore the clinical feasibility and reproducibility of a comprehensive whole-body 18F-PSMA-1007-PET/MRI protocol for imaging prostate cancer (PC) patients.MethodsEight patients with high-risk biopsy-proven PC underwent a whole-body PET/MRI (3 h p.i.)...

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Main Authors: Freitag, Martin T. (Author) , Kesch, Claudia (Author) , Flechsig, Paul (Author) , Radtke, Jan Philipp (Author) , Kratochwil, Clemens (Author) , Hohenfellner, Markus (Author) , Stenzinger, Albrecht (Author) , Haberkorn, Uwe (Author) , Giesel, Frederik L. (Author)
Format: Article (Journal)
Language:English
Published: 2018
In: European journal of nuclear medicine and molecular imaging
Year: 2017, Volume: 45, Issue: 3, Pages: 340-347
ISSN:1619-7089
DOI:10.1007/s00259-017-3854-6
Online Access:Verlag, Volltext: http://dx.doi.org/10.1007/s00259-017-3854-6
Verlag, Volltext: https://link.springer.com/article/10.1007/s00259-017-3854-6
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Author Notes:Martin T. Freitag, Claudia Kesch, Jens Cardinale, Paul Flechsig, Ralf Floca, Matthias Eiber, David Bonekamp, Jan P. Radtke, Clemens Kratochwil, Klaus Kopka, Markus Hohenfellner, Albrecht Stenzinger, Heinz-Peter Schlemmer, Uwe Haberkorn, Frederik Giesel
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Summary:IntroductionThe aim of the present study was to explore the clinical feasibility and reproducibility of a comprehensive whole-body 18F-PSMA-1007-PET/MRI protocol for imaging prostate cancer (PC) patients.MethodsEight patients with high-risk biopsy-proven PC underwent a whole-body PET/MRI (3 h p.i.) including a multi-parametric prostate MRI after 18F-PSMA-1007-PET/CT (1 h p.i.) which served as reference. Seven patients presented with non-treated PC, whereas one patient presented with biochemical recurrence. SUVmean-quantification was performed using a 3D-isocontour volume-of-interest. Imaging data was consulted for TNM-staging and compared with histopathology. PC was confirmed in 4/7 patients additionally by histopathology after surgery. PET-artifacts, co-registration of pelvic PET/MRI and MRI-data were assessed (PI-RADS 2.0).ResultsThe examinations were well accepted by patients and comprised 1 h. SUVmean-values between PET/CT (1 h p.i.) and PET/MRI (3 h p.i.) were significantly correlated (p < 0.0001, respectively) and similar to literature of 18F-PSMA-1007-PET/CT 1 h vs 3 h p.i. The dominant intraprostatic lesion could be detected in all seven patients in both PET and MRI. T2c, T3a, T3b and T4 features were detected complimentarily by PET and MRI in five patients. PET/MRI demonstrated moderate photopenic PET-artifacts surrounding liver and kidneys representing high-contrast areas, no PET-artifacts were observed for PET/CT. Simultaneous PET-readout during prostate MRI achieved optimal co-registration results.ConclusionsThe presented 18F-PSMA-1007-PET/MRI protocol combines efficient whole-body assessment with high-resolution co-registered PET/MRI of the prostatic fossa for comprehensive oncological staging of patients with PC.
Item Description:First online 16 October 2017
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Physical Description:Online Resource
ISSN:1619-7089
DOI:10.1007/s00259-017-3854-6

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