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Erschienen in: Abdominal Radiology 12/2023

01.06.2023 | Special Section: PET/MR

Distribution of prostate specific membrane antigen (PSMA) on PET-MRI in patients with and without ovarian cancer

verfasst von: Elizabeth A. Sadowski, Brittany Lees, Alan B. McMillian, Joanna E. Kusmirek, Steve Y. Cho, Lisa M. Barroilhet

Erschienen in: Abdominal Radiology | Ausgabe 12/2023

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Abstract

Objectives

Ovarian cancer is the most lethal cancer and future research needs to focus on the early detection and exploration of new therapeutic agents. The objectives of this proof-of-concept study are to assess the feasibility of PSMA 18F-DCFPyl PET/MR imaging for detecting ovarian cancer and to evaluate the PSMA distribution in patients with and without ovarian cancer.

Methods

This prospective pilot proof-of-concept study in patients with and without ovarian cancers occurred between October 2017 and January 2020. Patients were recruited from gynecologic oncology or hereditary ovarian cancer clinics, and underwent surgical removal of the uterus and ovaries for gynecologic indications. PSMA 18F-DCFPyl PET/MRI was obtained prior to standard of care surgery.

Results

Fourteen patients were scanned: four patients with normal ovaries, six patients with benign ovarian lesions, and four patients with malignant ovarian lesions. Tracer uptake in normal ovaries (SUVmax = 2.8 ± 0.4) was greater than blood pool (SUVmax = 1.8 ± 0.5, p < 0.0001). Tracer uptake in benign ovarian lesions (2.2 ± 1.0) did not differ significantly from blood pool (p = 0.331). Tracer uptake in ovarian cancer (SUVmax = 7.8 ± 3.8) was greater than blood pool (p < 0.0001), normal ovaries (p = 0.0014), and benign ovarian lesions (p = 0.005).

Conclusion

PET/MR imaging detected PSMA uptake in ovarian cancer, with little to no uptake in benign ovarian findings. These results are encouraging and further studies in a larger patient cohort would be useful to help determine the extent and heterogeneity of PSMA uptake in ovarian cancer patients.
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Metadaten
Titel
Distribution of prostate specific membrane antigen (PSMA) on PET-MRI in patients with and without ovarian cancer
verfasst von
Elizabeth A. Sadowski
Brittany Lees
Alan B. McMillian
Joanna E. Kusmirek
Steve Y. Cho
Lisa M. Barroilhet
Publikationsdatum
01.06.2023
Verlag
Springer US
Erschienen in
Abdominal Radiology / Ausgabe 12/2023
Print ISSN: 2366-004X
Elektronische ISSN: 2366-0058
DOI
https://doi.org/10.1007/s00261-023-03957-3

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