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Table 2 Assessment of the diagnostic quality of multiparametric MRI scans using the PI-QUAL score

From: Understanding PI-QUAL for prostate MRI quality: a practical primer for radiologists

PI-QUAL score Criteria Clinical implications
1 All mpMRI sequences are below the minimum standard for diagnostic quality It is NOT possible to rule in all significant lesionsa
2 Only one mpMRI sequence is of acceptable diagnostic quality It is NOT possible to rule out all significant lesionsa
3 At least two mpMRI sequences taken together are of diagnostic quality It is possible to rule in all significant lesions
   It is NOT possible to rule out all significant lesions
4 Two or more mpMRI sequences are independently of diagnostic quality It is possible to rule in all significant lesions
5 All mpMRI sequences are of optimal diagnostic quality It is possible to rule out all significant lesions
  1. PI-QUAL Prostate Imaging Quality, mpMRI multiparametric magnetic resonance imaging, PI-RADS Prostate Imaging Reporting and Data System
  2. Reprinted with permission from Giganti et al. [23]
  3. aTherefore, reports should not include PI-RADS or Likert scores