| Автор | Srijit Kamath |
| Автор | Sartaj Sahni |
| Автор | Jonathan Li |
| Автор | Jatinder Palta |
| Автор | Sanjay Ranka |
| Дата выпуска | 2003-02-07 |
| dc.description | The delivery of intensity-modulated radiation therapy (IMRT) with a multileaf collimator (MLC) requires the conversion of a radiation fluence map into a leaf sequence file that controls the movement of the MLC during radiation delivery. It is imperative that the fluence map delivered using the leaf sequence file is as close as possible to the fluence map generated by the dose optimization algorithm, while satisfying hardware constraints of the delivery system. Optimization of the leaf sequencing algorithm has been the subject of several recent investigations. In this work, we present a systematic study of the optimization of leaf sequencing algorithms for segmental multileaf collimator beam delivery and provide rigorous mathematical proofs of optimized leaf sequence settings in terms of monitor unit (MU) efficiency under most common leaf movement constraints that include minimum leaf separation constraint and leaf interdigitation constraint. Our analytical analysis shows that leaf sequencing based on unidirectional movement of the MLC leaves is as MU efficient as bidirectional movement of the MLC leaves. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Leaf sequencing algorithms for segmented multileaf collimation |
| Тип | paper |
| DOI | 10.1088/0031-9155/48/3/303 |
| Electronic ISSN | 1361-6560 |
| Print ISSN | 0031-9155 |
| Журнал | Physics in Medicine and Biology |
| Том | 48 |
| Первая страница | 307 |
| Последняя страница | 324 |
| Выпуск | 3 |
