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Sengupta

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Nov 18, 2025
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How is PSA doubling time calculated and what DT predicts metastatic progression after prostatectomy?

PSA doubling time (PSADT) is usually calculated from serial PSA measurements by fitting an exponential growth model — commonly by taking the natural log of PSA values, deriving a slope by linear regre...

Feb 1, 2026

How is PSA doubling time calculated and what measurement intervals are required for accuracy?

(PSADT) is derived from the slope of the log-transformed PSA values over time and is conventionally calculated as ln divided by that slope; clinical calculators implement this log‑slope method and equ...