Prostate cancer diagnosis and treatment using multiparametric transrectal ultrasonography

Multiparametric TRUS Color/power Doppler Rifkin classified abnormal Doppler flow signals from prostate cancer lesions into three types: diffuse flow, focal flow, and surrounding flow (Fig. 1) [1]. See PDF.] Assessment of blood flow images using power Doppler ultrasound The experience of the examiner is important as it is a qualitative assessment method regardless of analysis of flow signal patterns or zonal vascular anatomy. [...]analysis according to the amount of experience of the examiner using a large sample size is needed in order to assess the diagnostic accuracy of Doppler signals for prostate cancer. There have been reports in recent years that a technique using time intensity curve analyses [e.g., wash-in rate, time to peak (PT), time to appearance, peak intensity, area under the curve] during depiction of the contrast agent in a focused area with a suspected cancer lesion within the prostate gland is useful for diagnosis of the prostate and cancer aggressiveness [9, 10]. Whether the surgical margin has been sufficiently secured is key to guaranteeing oncological control, while ensuring the membranous urethral length associated with accurate apical dissection in order to maintain continence [11] and confirming whether a neurovascular bundle-sparing procedure aimed at preservation of male function was properly performed are key to preservation of functional control.