The Syed temporary interstitial iridium gynaecological implant: An inverse planning system Journal Article
| Author: | Fung, A. Y. C. |
| Article Title: | The Syed temporary interstitial iridium gynaecological implant: An inverse planning system |
| Abstract: | Patients with advanced gynaecological cancer are often treated with a temporary interstitial implant using the Syed template and Ir-192 ribbons at the Memorial Sloan-Kettering Cancer Center. Urgency in planning is great. We created a computerized inverse planning system for the Syed temporary gynaecological implant, which optimized the ribbon strengths a few seconds after catheter digitization. Inverse planning was achieved with simulated annealing. We discovered that hand-drawn target volumes had drawbacks; hence instead of producing a grid of points based on target volume, the optimization points were generated directly from the catheter positions without requiring an explicit target volume. Since all seeds in the same ribbon had the same strength, the minimum doses were located at both ends of the implant. Optimization points generated at both ends ensured coverage of the whole implant. Inverse planning took only a few seconds, and generated plans that provide a good starting point for manual improvement. |
| Keywords: | controlled study; treatment outcome; implant; treatment planning; united states; cancer patient; radiation dose; quality control; radiotherapy dosage; algorithms; automation; genital neoplasms, female; simulation; cancer center; tumors; catheterization; brachytherapy; computer simulation; radiotherapy planning, computer-assisted; patient treatment; gynecology; gynecologic cancer; iridium 192; iridium radioisotopes; optimization; implants (surgical); human; female; priority journal; article; analog to digital conversion; annealing; inverse planning system |
| Journal Title: | Physics in Medicine and Biology |
| Volume: | 47 |
| Issue: | 16 |
| ISSN: | 0031-9155 |
| Publisher: | IOP Publishing Ltd |
| Date Published: | 2002-08-21 |
| Start Page: | N203 |
| End Page: | N208 |
| Language: | English |
| DOI: | 10.1088/0031-9155/47/16/401 |
| PROVIDER: | scopus |
| PUBMED: | 12222864 |
| DOI/URL: | |
| Notes: | Export Date: 14 November 2014 -- Source: Scopus |
