Figure 3From: Transperineal prostate biopsy: analysis of a uniform core sampling pattern that yields data on tumor volume limits in negative biopsiesA. Four evenly-spaced finite cores (not to scale), of radius R c , where the spherical tumor contact points with the edges of the finite cores form a detection square with sides, s ≡ S - R c . B. Finite core detection geometry where s ≡ S - R c .Back to article page