Comparison of intensity-modulated radiotherapy with three-dimensional conformal radiation therapy planning for glioblastoma multiforme Journal Article
| Authors: | Chan, M. F.; Schupak, K.; Burman, C.; Chui, C. S.; Ling, C. C. |
| Article Title: | Comparison of intensity-modulated radiotherapy with three-dimensional conformal radiation therapy planning for glioblastoma multiforme |
| Abstract: | This study was designed to assess the feasibility and potential benefit of using intensity-modulated radiotherapy (IMRT) planning for patients newly diagnosed with glioblastoma multiforme (GBM). Five consecutive patients with confirmed histopathologically GBM were entered into the study. These patients were planned and treated with 3-dimensional conformal radiation therapy (3DCRT) using our standard plan of 3 noncoplanar wedged fields. They were then replanned with the IMRT method that included a simultaneous boost to the gross tumor volume (GTV). The dose distributions and dose-volume histograms (DHVs) for the planning treatment volume (PTV), GTV, and the relevant critical structures, as obtained with 3DCRT and IMRT, respectively, were compared. In both the 3DCRT and IMRT plans, 59.4 Gy was delivered to the GTV plus a margin of 2.5 cm, with doses to critical structures below the tolerance threshold. However, with the simultaneous boost in IMRT, a higher tumor dose of ~70 Gy could be delivered to the GTV, while still maintaining the uninvolved brain at dose levels of the 3DCRT technique. In addition, our experience indicated that IMRT planning is less labor intensive and time consuming than 3DCRT planning. Our study shows that IMRT planning is feasible and efficient for radiotherapy of GBM. In particular, IMRT can deliver a simultaneous boost to the GTV while better sparing the normal brain and other critical structures. © 2003 American Association of Medical Dosimetrists. |
| Keywords: | adult; clinical article; controlled study; clinical trial; histopathology; intensity modulated radiation therapy; treatment planning; cancer radiotherapy; radiation dose; brain radiation; brain neoplasms; controlled clinical trial; tumor volume; radiotherapy dosage; radiotherapy; tomography, x-ray computed; feasibility study; brain; imrt; dosimetry; imaging, three-dimensional; glioblastoma; intermethod comparison; radiotherapy planning, computer-assisted; radiotherapy, conformal; computer assisted radiotherapy; radiation dose distribution; radiation field; histogram; gbm; humans; human; priority journal; article; 3d-dose distribution |
| Journal Title: | Medical Dosimetry |
| Volume: | 28 |
| Issue: | 4 |
| ISSN: | 0958-3947 |
| Publisher: | Elsevier Science, Inc. |
| Date Published: | 2003-01-01 |
| Start Page: | 261 |
| End Page: | 265 |
| Language: | English |
| DOI: | 10.1016/j.meddos.2003.08.004 |
| PUBMED: | 14684191 |
| PROVIDER: | scopus |
| DOI/URL: | |
| Notes: | The publisher's record lists the publication date as Winter -- Export Date: 12 September 2014 -- Source: Scopus; Publication date: Winter 2003 |
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