Biparametric Prostate MRI without ADC

How to report a Prostate MRI, when ADC is not available

Guideline used: ACR manual PIRADS V2.1 2019- page 11: 

https://www.acr.org/-/media/ACR/Files/RADS/PI-RADS/PIRADS-V2-1.pdf


Biparametric MRI can be assessed based on the unavailability of either contrast or DWI images. 

T2 W Images and either ADC or Dynamic arterial phase is essential for evaluation.




Case Discussion:

65 / M
PSA: 32 ng/ml

Findings & Interpretation based on available images:


Transition Zone: 

Large area of non-circumscribed moderate T2W hypointensity. Restricted diffusion is seen in the medial part of the lesion and measures > 1.5 cm.  

PIRADS 5

peripheral  Zone: 

Index lesion 1: 

Moderate hypointensity is seen in the left base and not so well defined. On post contrast, there is intense focal contrast enhancement and measures < 1.5 cm.

PIRADS 4

Index lesion 2: 

Moderate T2W hypointense nodule that shows restricted diffusion and measures <1.5 cm. 

PIRADS 4


Further Management

1. TRUS guided Biopsy was performed:

- ISUP - 3
- Gleason's Score: 4 + 3
- 60 % core was involved by tumor from the left lateral biopsy

2. PSMA PET : 

High uptake seen in the corresponding regions




Prepared by Dr. Sharad Maheshwari

18.11.2022

Update: 19.11.2022



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