Ultrasound Targeting for the Lumpectomy Cavity

Breast Neoplasms Clinical Trial

Official title: Evaluation of Change in the Lumpectomy Cavity During Radiation Therapy by Weekly Ultrasound and by Daily Ultrasound During the Radiation Boost Dose

Status Completed

Clinical Trial Summary

Accurate targeting of treatment sites should increase local control by radiation therapy for breast-cancer lumpectomy patients. Currently, ultrasound localization is used for prostate cancer patients to locate the prostate before daily radiation treatments. There is now documented evidence that the lumpectomy site does change during the external radiation therapy. Thus, treatment efficacy should be increased by localizing the target, monitoring volume changes, and adjusting the radiation target prior to the boost radiation dose.

Clinical Trial Description

Study participants will have weekly ultrasounds performed of the lumpectomy cavity to determine shift and volume changed from the initial treatment-planning CT to the time of the radiation boost (approximately 4 weeks). These ultrasounds are done prior to their weekly doctor's appointment with Radiation Oncology.

When it is time to perform the radiation boost (when the radiation is more targeted to the lumpectomy cavity), the ultrasound will be done daily with the participant in treatment position. The SonArray system used for the ultrasound-driven targeting for prostate cancer will be utilized. If the lumpectomy cavity is observed, the ultrasound suggested shifts will be noted and compared to the shifts needed for standard clinical set up.

Once the subject has completed radiation therapy, the study participation is complete. ;

Study Design

Observational Model: Case-Only, Time Perspective: Prospective

Related Conditions & MeSH terms

• Breast Neoplasms

• NCT number: NCT00583843
• Study type: Observational
• Source: University of Iowa
• Status: Completed
• Phase: N/A
• Start date: June 2006
• Completion date: December 2011