Multiadaptive Plan (MAP) IMRT to Accommodate Independent Movement of the Prostate and Pelvic Lymph Nodes
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 2011
- Accession Number
- ADA561088
Entities
People
- Ping Xia