Alberts, Ian; Sachpekidis, Christos; Gourni, Eleni; Boxler, Silvan; Gross, Tobias; Thalmann, George; Rahbar, Kambiz; Rominger, Axel; Afshar Oromieh, Ali (2020). Dynamic patterns of [68Ga]Ga-PSMA-11 uptake in recurrent prostate cancer lesions. European journal of nuclear medicine and molecular imaging, 47(1), pp. 160-167. Springer-Verlag 10.1007/s00259-019-04545-8
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PURPOSE
Dual-time point PET/CT scanning with [68Ga]Ga-PSMA-11 in the diagnosis of prostate cancer (PC) has been advanced as a method to increase detection of PC lesions, particularly at early stages of biochemical recurrence and as a potential means to aid the discrimination between benign and pathological prostate-specific membrane antigen (PSMA) uptake. However, the assumption that all PC lesions uniformly exhibit increasing tracer uptake at delayed imaging has not yet been investigated, which this present study aims to address.
METHODS
One hundred consecutive patients with biochemically recurrent PC who received standard and late [68Ga]Ga-PSMA-11 PET/CT (by local protocol at 1.5 h "standard" and 2.5 h p.i. "late") underwent retrospective evaluation. All lesions with a tracer uptake above local background were analysed with regard to their maximum standardised uptake values at standard and late images (SUVmax) and characterised according to their morphological characteristics.
RESULTS
Seventy-nine of 100 patients had PSMA-positive scans, in whom a total of 185 individual PSMA-positive lesions were identified. These were morphologically characterised as bone lesions (n = 48), solid organ lesions (n = 3), lymph node (LN) lesions (n = 78) and locally recurrent lesions in the prostatic fossa or seminal vesicles (n = 56). The relative uptake between standard and late imaging was considered; all lesions classified as local recurrence presented with increasing (86%) or stable patterns of tracer uptake (14%). In contrast, only 58% of bone lesions exhibited increasing tracer uptake, with 21% exhibiting a stable pattern and 21% exhibiting a decreasing tracer uptake at late imaging.
CONCLUSION
A heterogeneous pattern of dynamic tracer uptake was observed, with a largely increasing pattern observed for locally recurrent lesions and lymph nodes and a significant proportion of bone lesions exhibiting decreasing tracer uptake. The results are of significance not only in the imaging and identification of PC lesions, but they also have implications for PSMA-directed ligand therapy.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
04 Faculty of Medicine > Department of Radiology, Neuroradiology and Nuclear Medicine (DRNN) > Clinic of Nuclear Medicine 04 Faculty of Medicine > Department of Dermatology, Urology, Rheumatology, Nephrology, Osteoporosis (DURN) > Clinic of Urology |
UniBE Contributor: |
Alberts, Ian Leigh, Sachpekidis, Christos, Gourni, Eleni, Boxler, Silvan, Gross, Tobias, Thalmann, George, Rominger, Axel Oliver, Afshar Oromieh, Ali |
Subjects: |
600 Technology > 610 Medicine & health |
ISSN: |
1619-7070 |
Publisher: |
Springer-Verlag |
Language: |
English |
Submitter: |
Jeannine Wiemann |
Date Deposited: |
06 Nov 2019 10:22 |
Last Modified: |
20 Oct 2023 00:25 |
Publisher DOI: |
10.1007/s00259-019-04545-8 |
PubMed ID: |
31628514 |
Uncontrolled Keywords: |
Ganglion PET/CT PSMA Positron emission tomography Prostate cancer Prostate-specific membrane antigen |
BORIS DOI: |
10.7892/boris.134483 |
URI: |
https://boris.unibe.ch/id/eprint/134483 |
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