Table 3.

Different imaging features of tumors between MRI and TRUS.

Tumor Location/Morphology	MRI	TRUS
Scan axis to urethra	Perpendicular	Oblique
Anterior 1/3 location	Base and mid-gland	Mid-gland and apex
Middle 1/3 location	Same location	Same location
Posterior 1/3 location	Apex and mid-gland	Mid-gland and base
Tumor size	Different size	Different size
Tumor shape	Different shape	Different shape

MRI, magnetic resonance imaging; TRUS, transrectal ultrasound.