The Use of Transperineal Ultrasound for Radiation Therapy Treatment Planning and Image Guidance in the Treatment of Prostate Cancer

NCT01545154 | Completed

• 1 other identifier: CHRMS M12-073
• Study Type: observational
• Target: 17
• Locations: 1 country
• Sites: 1

Brief Summary

This study is being done to find out if transperineal ultrasound (TPUS) can help define the prostate gland for radiation treatment planning and improve upon current methods of image guidance for the treatment of prostate cancer. For the patient, TPUS involves the placement of an ultrasound probe on the perineum, the skin between the scrotum and anus, while they are lying on their back in the position they will receive their treatment. Image-guidance is required for the treatment of prostate cancer because the prostate shifts position depending on how full the bladder and rectum are. Image-guided radiation therapy has been done at Fletcher Allen Health Care for approximately three years. Most commonly, transabdominal ultrasound images are obtained every day and compared to an ultrasound that was done on the day of treatment planning. Adjustments in radiation field position can be done on a daily basis by comparing these images. Transperineal ultrasound has never been used for image-guidance. The investigators completed an earlier study and have developed a TPUS device and process that allow us to get clear ultrasound pictures of the prostate gland. The TPUS has three potential advantages over the transabdominal method the investigators currently use:

1. 1.Transabdominal ultrasound can be a challenge for some men. A full bladder helps us get clearer images, however it is difficult for some men with prostate cancer to comfortably keep a full bladder. It is also particularly difficult to get good images in larger men who have long distances from the skin surface to the prostate gland. TPUS is not dependent on a man having a full bladder and should be less dependent on the size of the man.
2. 2.TPUS images and the planning CT images can be acquired simultaneously. This is not possible with the abdominal probe because it gets in the way of the CT machine. Simultaneous imaging eliminates the possibility of the prostate gland shifting positions during the time between imaging studies.
3. 3.TPUS can be in place and acquire images during patient treatment (the abdominal probe gets in the way of the treatment machine) and may in the future allow us to watch the prostate gland during treatment. If the investigators discover that they can accurately view the prostate gland in real time, TPUS may ultimately allow us to treat even smaller radiation fields and possibly decrease the risk of radiation complications.

Conditions

Prostate Cancer

Study Arms (1)

Prostate Cancer

Device: Transperineal Ultrasound

Interventions

Transperineal Ultrasound DEVICE

Prostate Cancer

Eligibility Criteria

• Age: 18 Years+
• Sex: male
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Males with prostate cancer, 18+

You may qualify if:

• Clinical diagnosis of prostate cancer

You may not qualify if:

• Prostatectomy

Sponsors & Collaborators

• H. James Wallace, MD: lead
• Elekta Limited: collaborator

Study Sites (1)

Fletcher Allen Health Care

Burlington, Vermont, 05401, United States

Location

MeSH Terms

Conditions

Prostatic Neoplasms

Condition Hierarchy (Ancestors)

Genital Neoplasms, Male; Urogenital Neoplasms; Neoplasms by Site; Neoplasms; Genital Diseases, Male; Genital Diseases; Urogenital Diseases; Prostatic Diseases; Male Urogenital Diseases

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR INVESTIGATOR
• PI Title: Principal Investigator

Study Record Dates

• First Submitted: February 29, 2012
• First Posted: March 6, 2012
• Study Start: February 1, 2012
• Primary Completion: October 1, 2013
• Study Completion: October 1, 2013
• Last Updated: March 28, 2014

Record last verified: 2014-03

Locations

US (1)