PI-RADS Calculator v. 2.1

Do you have an adequate DWI?

Yes

No

Do you have an adequate DCE?

Yes

No

Cannot calculate the PI-RADS score:
If both DWI and DCE are inadequate or absent, assessment should be limited to staging for determination of extraprostatic extension.

Where is the lesion located?

Peripheral zone

Transitional zone

How does the lesion look on DCE?

No early or contemporaneous enhancement

Diffuse multifocal enhancement NOT corresponding to a focal finding on T2W and/or DWI

Focal enhancement corresponding to a lesion demonstrating features of BPH on T2WI (including features of extruded BPH in the PZ)

Focal and earlier than or contemporaneously with enhancement of adjacent normal prostatic tissues, and; corresponds to suspicious finding on T2W and/or DWI

How does the lesion look on DWI and ADC?

Normal on ADC and high b-value DWI

Linear/wedge shaped hypointense on ADC and/or linear/wedge shaped hyperintense on high b-value DWI

Focal (discrete and different from the background) hypointense on ADC and/or focal hyperintense on high b-value DWI (may be markedly hypointense on ADC or markedly hyperintense on high b-value DWI, but not both)

Focal markedly hypontense on ADC AND markedly hyperintense on high b-value DWI AND <1.5cm in greatest dimension

Focal markedly hypontense on ADC AND markedly hyperintense on high b-value DWI AND ≥1.5cm in greatest dimension or definite extraprostatic extension/invasive behavior

How does the lesion look on T2w imaging?

Uniform hyperintense signal intensity (i.e. normal)

Linear or wedge-shaped hypointensity

Diffuse mild hypointensity

Heterogeneous signal intensity

Non-circumscribed, rounded, moderate hypointensity

Circumscribed, homogenous moderate hypointensity confined to prostate AND <1.5 cm in greatest dimension

Circumscribed, homogenous moderate hypointensity confined to prostate AND ≥1.5cm in greatest dimension or definite extraprostatic extension/invasive behavior

None of the above

How does the lesion look on T2w imaging?

Normal appearing transitional zone

Typical nodule (round, completely encapsulated nodule)

Atypical nodule (homogeneous circumscribed nodule without encapsulation)

A mostly encapsulated nodule

A homogeneous mildly hypointense area between nodules

Heterogeneous signal intensity with obscured margins

Lenticular or non-circumscribed, homogeneous, moderately hypointense, AND <1.5 cm in greatest dimension

Same as above, but ≥1.5cm in greatest dimension or definite extraprostatic extension/invasive behavior

None of the above

Calculated Score:

PI-RADS 1

→ Clinically significant cancer is highly unlikely to be present.

Calculated Score:

PI-RADS 1

→ Clinically significant cancer is highly unlikely to be present.

Calculated Score:

PI-RADS 1

→ Clinically significant cancer is highly unlikely to be present.

Calculated Score:

PI-RADS 2

→ Clinically significant cancer is unlikely to be present.

Calculated Score:

PI-RADS 2

→ Clinically significant cancer is unlikely to be present.

Calculated Score:

PI-RADS 2

→ Clinically significant cancer is unlikely to be present.

Calculated Score:

PI-RADS 2

→ Clinically significant cancer is unlikely to be present.

Calculated Score:

PI-RADS 3

→ The presence of clinically significant cancer is equivocal.

Calculated Score:

PI-RADS 3

→ The presence of clinically significant cancer is equivocal.

Calculated Score:

PI-RADS 3

→ The presence of clinically significant cancer is equivocal.

Calculated Score:

PI-RADS 3

→ The presence of clinically significant cancer is equivocal.

Calculated Score:

PI-RADS 3

→ The presence of clinically significant cancer is equivocal.

Calculated Score:

PI-RADS 4

→ Clinically significant cancer is likely to be present.

Calculated Score:

PI-RADS 4

→ Clinically significant cancer is likely to be present.

Calculated Score:

PI-RADS 4

→ Clinically significant cancer is likely to be present.

Calculated Score:

PI-RADS 4

→ Clinically significant cancer is likely to be present.

Calculated Score:

PI-RADS 5

→ Clinically significant cancer is highly likely to be present.

Calculated Score:

PI-RADS 5

→ Clinically significant cancer is highly likely to be present.

Calculated Score:

PI-RADS 5

→ Clinically significant cancer is highly likely to be present.

Calculated Score:

PI-RADS 4

→ Clinically significant cancer is likely to be present.

Calculated Score:

PI-RADS 4

→ Clinically significant cancer is likely to be present.

Start Over

PI-RADS Calculator v. 2.1

Cannot calculate the PI-RADS score:
If both DWI and DCE are inadequate or absent, assessment should be limited to staging for determination of extraprostatic extension.

→ Clinically significant cancer is highly unlikely to be present.

→ Clinically significant cancer is highly unlikely to be present.

→ Clinically significant cancer is highly unlikely to be present.

→ Clinically significant cancer is unlikely to be present.

→ Clinically significant cancer is unlikely to be present.

→ Clinically significant cancer is unlikely to be present.

→ Clinically significant cancer is unlikely to be present.

→ The presence of clinically significant cancer is equivocal.

→ The presence of clinically significant cancer is equivocal.

→ The presence of clinically significant cancer is equivocal.

→ The presence of clinically significant cancer is equivocal.

→ The presence of clinically significant cancer is equivocal.

→ Clinically significant cancer is likely to be present.

→ Clinically significant cancer is likely to be present.

→ Clinically significant cancer is likely to be present.

→ Clinically significant cancer is likely to be present.

→ Clinically significant cancer is highly likely to be present.

→ Clinically significant cancer is highly likely to be present.

→ Clinically significant cancer is highly likely to be present.

→ Clinically significant cancer is likely to be present.

→ Clinically significant cancer is likely to be present.

References:

Related Calculators:

Prostate Volume Calculator

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PI-RADS Calculator v. 2.1

Cannot calculate the PI-RADS score: If both DWI and DCE are inadequate or absent, assessment should be limited to staging for determination of extraprostatic extension.

→ Clinically significant cancer is highly unlikely to be present.

→ Clinically significant cancer is highly unlikely to be present.

→ Clinically significant cancer is highly unlikely to be present.

→ Clinically significant cancer is unlikely to be present.

→ Clinically significant cancer is unlikely to be present.

→ Clinically significant cancer is unlikely to be present.

→ Clinically significant cancer is unlikely to be present.

→ The presence of clinically significant cancer is equivocal.

→ The presence of clinically significant cancer is equivocal.

→ The presence of clinically significant cancer is equivocal.

→ The presence of clinically significant cancer is equivocal.

→ The presence of clinically significant cancer is equivocal.

→ Clinically significant cancer is likely to be present.

→ Clinically significant cancer is likely to be present.

→ Clinically significant cancer is likely to be present.

→ Clinically significant cancer is likely to be present.

→ Clinically significant cancer is highly likely to be present.

→ Clinically significant cancer is highly likely to be present.

→ Clinically significant cancer is highly likely to be present.

→ Clinically significant cancer is likely to be present.

→ Clinically significant cancer is likely to be present.

References:

Related Calculators:

Prostate Volume Calculator

Share your thoughts Cancel reply

Cannot calculate the PI-RADS score:
If both DWI and DCE are inadequate or absent, assessment should be limited to staging for determination of extraprostatic extension.