CT Scans in Guiding the Treatment of Patients With Prostate Cancer Who Are Undergoing Radiation Therapy

This study has been completed.
Information provided by:
Memorial Sloan-Kettering Cancer Center
ClinicalTrials.gov Identifier:
First received: July 11, 2001
Last updated: January 17, 2013
Last verified: January 2013

RATIONALE: Radiation therapy uses high-energy x-rays to damage tumor cells. Multiple CT scans may improve the accuracy of radiation therapy for prostate cancer.

PURPOSE: Phase I trial to study the effectiveness of multiple CT scans in guiding the treatment of patients who have prostate cancer and are undergoing radiation therapy.

Condition Intervention Phase
Prostate Cancer
Procedure: computed tomography
Radiation: radiation therapy
Phase 2

Study Type: Interventional
Study Design: Primary Purpose: Diagnostic
Official Title: The Use Of Multiple CT Scans To Reduce Target Positioning Errors In Patients Undergoing External Beam Radiotherapy Treatment For Prostate Cancer

Resource links provided by NLM:

Further study details as provided by Memorial Sloan-Kettering Cancer Center:

Primary Outcome Measures:
  • Treatment accuracy [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Reduction in the proportion of patients with large target positioning errors using CT guided procedure [ Designated as safety issue: No ]
  • Organ motion and setup errors [ Designated as safety issue: No ]

Estimated Enrollment: 25
Study Start Date: March 2001
Primary Completion Date: June 2006 (Final data collection date for primary outcome measure)
Detailed Description:


  • Compare the accuracy of radiotherapy delivery using multiple CT scans to guide patient positioning vs the standard portal image guided procedure in patients with prostate cancer undergoing external beam radiotherapy.
  • Determine the reduction in the proportion of patients with large target positioning errors using the CT-guided procedure.
  • Determine organ motion and setup errors over the course of radiotherapy in order to develop efficient clinical intervention strategies in these patients.

OUTLINE: Patients undergo radiotherapy over 9 weeks. Patients undergo a CT scan immediately prior to receiving radiotherapy on treatment days 3-8 and then weekly thereafter. On 3 different days, patients also undergo CT scan immediately after radiotherapy. If the CT scans indicate a correction that exceeds the action level currently in effect, then beginning with the next treatment, the patient's position with respect to the radiation field is adjusted.

PROJECTED ACCRUAL: A total of 25 patients will be accrued for this study within 2 years.


Genders Eligible for Study:   Male
Accepts Healthy Volunteers:   No


  • Undergoing external beam intensity-modulated radiotherapy for prostate cancer
  • Able to maintain treatment position for about 40 minutes



  • Not specified

Performance status:

  • Not specified

Life expectancy:

  • Not specified


  • Not specified


  • Not specified


  • Not specified


Biologic therapy:

  • Not specified


  • Not specified

Endocrine therapy:

  • Not specified


  • See Disease Characteristics


  • Not specified
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00020891

United States, New York
Memorial Sloan-Kettering Cancer Center
New York, New York, United States, 10021
Sponsors and Collaborators
Memorial Sloan-Kettering Cancer Center
Study Chair: Michael Lovelock, PhD Memorial Sloan-Kettering Cancer Center
  More Information

Additional Information:
No publications provided

ClinicalTrials.gov Identifier: NCT00020891     History of Changes
Other Study ID Numbers: 01-022, P30CA008748, MSKCC-01022, NCI-G01-1968
Study First Received: July 11, 2001
Last Updated: January 17, 2013
Health Authority: United States: Federal Government

Keywords provided by Memorial Sloan-Kettering Cancer Center:
stage I prostate cancer
stage IIB prostate cancer
stage IIA prostate cancer
stage III prostate cancer
stage IV prostate cancer
recurrent prostate cancer

Additional relevant MeSH terms:
Prostatic Neoplasms
Genital Neoplasms, Male
Urogenital Neoplasms
Neoplasms by Site
Genital Diseases, Male
Prostatic Diseases

ClinicalTrials.gov processed this record on April 17, 2014