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. 2022 Oct 26;12(11):2594. doi: 10.3390/diagnostics12112594

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Biochemical recurrence—negative scan; normal distribution of tracer. 75 yr old M—radical prostatectomy 7 yrs prior; PSA 0.42. PSMA PET-CT: ⁶⁸Ga-PSMA - 219 MBq; uptake 48 min; BMI = 22.6; Wt 63 kg. (a,b): coronal images show physiological uptake in parotid glands, bowel and kidneys and tracer pooling in bladder; X-hairs show uptake in cervical (SUV = 2.3) and sacral (SUV = 2.5) nerve roots and sympathetic ganglia in upper abdomen SUV = 4.6. (c,d): enlarged coronal, sagittal and transaxial images of prostate bed; X-hairs identify locations; no abnormal tracer uptake but pooling of trace in bladder problematic; Note—scale in sagittal images on (c) has been deliberately altered to ensure there are no adjacent focal regions of uptake to suggest local tumor recurrence.

Biochemical recurrence—negative scan; normal distribution of tracer. 75 yr old M—radical prostatectomy 7 yrs prior; PSA 0.42. PSMA PET-CT: ⁶⁸Ga-PSMA - 219 MBq; uptake 48 min; BMI = 22.6; Wt 63 kg. (a,b): coronal images show physiological uptake in parotid glands, bowel and kidneys and tracer pooling in bladder; X-hairs show uptake in cervical (SUV = 2.3) and sacral (SUV = 2.5) nerve roots and sympathetic ganglia in upper abdomen SUV = 4.6. (c,d): enlarged coronal, sagittal and transaxial images of prostate bed; X-hairs identify locations; no abnormal tracer uptake but pooling of trace in bladder problematic; Note—scale in sagittal images on (c) has been deliberately altered to ensure there are no adjacent focal regions of uptake to suggest local tumor recurrence.