Feasibility Study of Cone Beam Imaging for Radiation Therapy Treatment Verification

NCT ID: NCT00582959

Last Updated: 2014-02-06

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 19 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2004-04-30
• Study Completion Date: 2014-02-28

Brief Summary

The purpose of this study is to test a new technology for obtaining x-ray images of your treatment fields when you are positioned on the treatment machine, to determine whether this new system is as reliable and easy to use as conventional systems.. These so-called portal images are normally taken on a weekly basis, prior to your radiation treatment. The new portal imaging system to be tested is designed to produce better quality images than are currently achievable, but with no additional dose or added treatment time.

Detailed Description

The objective of this proposal is to test the clinical practicality of a new technology; cone beam imaging, for verification of treatment set up accuracy of cancer patients receiving radiation therapy. Currently, treatment accuracy is checked via use of 2-dimensional projection x-rays taken with the megavoltage treatment beam and electronic portal imaging devices (EPID). Typically 2 orthogonal portal images are obtained to confirm patient positioning accuracy. This method of treatment verification, however, usually provides images of poor quality and lacks true 3D information, thus making it difficult for the radiation oncologist to definitively confirm treatment accuracy. New generation EPIDs are capable of obtaining higher quality images at significantly lower imaging doses. Thus, for the same total imaging dose new generation EPIDs permit acquisition of many projection images rather than just 2 or 3. The combination of more images and higher quality images should permit more definitive assessment of treatment accuracy. We propose here to test the clinical practicality and reliability of a new prototype portal imaging system.

Conditions

Radiation Treatment for Tumors

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: DIAGNOSTIC
• Blinding Strategy: NONE

Study Groups

1

Prototype, third generation EPID based portal imaging system utilizing the MV approach.

Group Type: OTHER

Cone Beam Imaging

Intervention Type: OTHER

Prototype, third generation EPID based portal imaging system utilizing the MV approach.

Interventions

Cone Beam Imaging

Prototype, third generation EPID based portal imaging system utilizing the MV approach.

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• Patients must have histologic proof of a malignancy suitable for radiation therapy in order to be eligible for this study

Exclusion Criteria

• None

• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

National Cancer Institute (NCI)

NIH

Sponsor Role: collaborator

Memorial Sloan Kettering Cancer Center

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Michael Zelefsky, MD

Role: PRINCIPAL_INVESTIGATOR

Memorial Sloan Kettering Cancer Center

Locations

Memorial Sloan Kettering Cancer Center

New York, New York, United States

Countries

United States

Related Links

http://www.mskcc.org

Related Info

Other Identifiers

NCI CA59017

Identifier Type: -

Identifier Source: secondary_id

04-037

Identifier Type: -

Identifier Source: org_study_id