Prostate volume estimation at MRI or Ultrasound and PSA-Density calculation
1. Sagittal diameter (cm):
2. Sagittal diameter (cm):
Laterolateral diameter (cm):
PSA (ng/ml):
Prostate volume (cm³): -
PSA-Density: -
Text Module
Additional Info
Calculation by using the ellipsoid formula (length x width x height × π/6). π/6 is rounded to 0.52.Universal PSA density cut-off values are not established. Suggested values are mostly around 0.08 to 0.15, depending on e.g. psa-value itself and clinical considerations.
Paterson NR, Lavallée LT, Nguyen LN, et al. Prostate volume estimations using magnetic resonance imaging and transrectal ultrasound compared to radical prostatectomy specimens. Can Urol Assoc J. 2016 Aug;10(7-8):264-268. DOI:10.5489/cuaj.3236
Aminsharifi A, Howard L, Wu Y, et al. Prostate-specific antigen density as a predictor of clinically significant prostate cancer when the PSA level is in the diagnostic "grey-zone": Defining the optimum cut-point stratified by race and body mass index. J Urol. 2018 May 11. pii: S0022-5347(18)43126-6. DOI:10.1016/j.juro.2018.05.016
Kotb AF, Spaner S, Crump T, et al. The role of mpMRI and PSA density in patients with an initial negative prostatic biopsy. World J Urol. 2018 May 28. DOI:10.1007/s00345-018-2341-4
Turkbey B, Rosenkrantz AB, Haider MA, et al. Prostate Imaging Reporting and Data System Version 2.1: 2019 Update of Prostate Imaging Reporting and Data System Version 2. DOI:10.1016/j.eururo.2019.02.033