There are several different ways of dividing the prostate. Zones from various schema are included here. The prostate is divided from superior to inferior into three regional parts: the base, the middle region, and the apex. Anatomical regions defined for the purpose of prostate targeting during interventions, may include multiple constitutional and regional parts of the prostate. Thirty-six sectors for standardized MRI prostate localization reporting are identified, with addition of seminal vesicles and membranous urethra. Each traditional prostate sextant is sub-divided into six sectors, to include: the anterior fibromuscular stroma, the transition zone anterior and posterior sectors, the peripheral zone anterior, lateral, and medial sectors. The anterior and posterior sectors are defined by a line bisecting the prostate into the anterior and posterior halves.