Real-time computed tomography dosimetry during ultrasound-guided brachytherapy for prostate cancer.

Purpose: Ultrasound-guided implantation of permanent radioactive seeds is a treatment option for localized prostate cancer. Several techniques have been described for the optimal placement of the seeds in the prostate during this procedure. Postimplantation dosimetric calculations are performed after the implant.

Effect of random seed placement error in permanent transperineal prostate seed implant.

Background And Purpose: Random seed placement error may adversely effect dose distribution in transperineal prostate seed implants. In this study, we investigated the extent to which individual seed activity influences dose-distribution degradation due to random seed placement error.

Patients And Methods: Separate initial treatment plans were prepared for three prostate sizes, 27.

A comparison of the precision of seeds deposited as loose seeds versus suture embedded seeds: a randomized trial.

Purpose: Brachytherapy for prostate cancer with permanent low-dose-rate seeds has been shown to be an effective treatment for early stage prostate cancer. Due to the rapid falloff of dose, accurate seed placement is critical for optimal dosimetry. One approach to achieve optimal dosimetry is the use of seeds embedded in suture material.

Real time MRI-ultrasound image guided stereotactic prostate biopsy.

To report a technique for target directed transperineal ultrasound guided biopsy using high resolution endorectal MRI images Ultrasound fusion. Two patients presented after external beam irradiation for prostate cancer with a rising PSA. An Endorectal MRI using a 1.