Improving Assessment (and Ultimately Outcomes) of Permanent Prostate Implant Therapy

NCT00127816 | Completed DMC

• 2 other identifiers: SP-14-0044 / 21694RIP Project 21694
• Study Type: interventional
• Target: 40
• Locations: 1 country
• Sites: 1

Brief Summary

Permanent prostate implants are a type of radiation therapy in which a high dose of radiation is delivered to cancerous tissue by many small radioactive "seeds". Studies of early-stage prostate cancer patients treated in this way and followed for 10 - 12 years indicate a cure rate of about 80%. This result is similar to surgery and other forms of radiotherapy, but comes with fewer side effects and greater convenience for the patient. Further studies show that the radiation dose delivered is the most important factor in achieving a cure. At present this dose is estimated by a computer, using a computed tomography (CT) scan of the patient and a simple calculation method. The dose estimate is not as accurate as it could be, however, because the precise extent of the prostate is hard to determine from the CT scan, and the calculation method does not make use of information about patient body tissues. The researchers propose to eliminate these inaccuracies by using magnetic resonance imaging (MRI) to identify the prostate gland and by developing an improved dose calculation algorithm that includes information about patient tissues. This new approach will allow physicians to assess implant quality with greater certainty, improve their implant technique, and ultimately increase the cure rate to as much as 95%.

Conditions

Prostate Cancer

Keywords

brachytherapy; implant radiotherapy

Outcome Measures

Primary Outcomes (1)

• implant dose coverage at 4 weeks, comparing CT and MRI versus CT alone

Secondary Outcomes (1)

• implant edema at time of implant and at 2 and 4 weeks

Interventions

Permanent prostate implant PROCEDURE

Eligibility Criteria

• Sex: male
• Healthy Volunteers: No
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

• Candidate for permanent prostate implant

You may not qualify if:

• Not ambulatory

Sponsors & Collaborators

• AHS Cancer Control Alberta: lead
• Cross Cancer Institute: collaborator

Study Sites (1)

Cross Cancer Institute

Edmonton, Alberta, T6G 1Z2, Canada

Location

Related Publications (2)

• Nag S, Bice W, DeWyngaert K, Prestidge B, Stock R, Yu Y. The American Brachytherapy Society recommendations for permanent prostate brachytherapy postimplant dosimetric analysis. Int J Radiat Oncol Biol Phys. 2000 Jan 1;46(1):221-30. doi: 10.1016/s0360-3016(99)00351-x.

  PMID: 10656396 BACKGROUND

• Yu Y, Anderson LL, Li Z, Mellenberg DE, Nath R, Schell MC, Waterman FM, Wu A, Blasko JC. Permanent prostate seed implant brachytherapy: report of the American Association of Physicists in Medicine Task Group No. 64. Med Phys. 1999 Oct;26(10):2054-76. doi: 10.1118/1.598721.

  PMID: 10535622 BACKGROUND

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 Officials

• Ron Sloboda, PhD

  AHS Cancer Control Alberta

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: August 5, 2005
• First Posted: August 9, 2005
• Study Start: April 1, 2005
• Primary Completion: April 1, 2013
• Study Completion: April 1, 2013
• Last Updated: March 16, 2016

Record last verified: 2016-03

Locations

CA (1)