Accession Number:

ADA561088

Title:

Multiadaptive Plan (MAP) IMRT to Accommodate Independent Movement of the Prostate and Pelvic Lymph Nodes

Descriptive Note:

Annual rept. 1 May 2010-12 Nov 2011

Corporate Author:

CLEVELAND CLINIC FOUNDATION OH

Personal Author(s):

• Xia, Ping

Report Date:

2011-12-01

Pagination or Media Count:

75.0

Abstract:

We found that the rotational shifts detected by aligning implanted markers between the planning images and the verification images may not determine the true rotation of the prostate. Ignoring these detected rotational shifts may lead to erroneous errors of localizing the prostate. We found that the prostate rotation can be compensated with corrections made in translational shifts, achieving improved geometric and dosimetric evaluation indices. Furthermore, we found that when the verification images had the same quality as the planning computed tomography CT, the use of patient-specific atlas could produce automatic contours that were highly consistent with the manually contoured ones. Performance of patient-specific atlas is drastically better than the results of general patient population-based atlas as reported last year.

Descriptors:

• *LYMPH NODES
• *PROSTATE CANCER
• COMPUTERIZED TOMOGRAPHY
• CONSISTENCY
• CONTOURS
• DOSIMETRY
• INDEXES
• MANUAL OPERATION
• PATIENTS
• PELVIS
• PROSTATE GLAND
• TEST AND EVALUATION

Subject Categories:

• Medicine and Medical Research

Distribution Statement:

APPROVED FOR PUBLIC RELEASE