Whole Three-Dimensional Dosimetry of Carbon Ion Beams with an MRI-Based Nanocomposite Fricke Gel Dosimeter Using Rapid T(1) Mapping Method

MRI-based gel dosimeters are attractive systems for the evaluation of complex dose distributions in radiotherapy. In particular, the nanocomposite Fricke gel dosimeter is one among a few dosimeters capable of accurately evaluating the dose distribution of heavy ion beams. In contrast, reduction of t...

Descripción completa

Detalles Bibliográficos
Autores principales: Mizukami, Shinya, Watanabe, Yusuke, Mizoguchi, Takahiro, Gomi, Tsutomu, Hara, Hidetake, Takei, Hideyuki, Fukunishi, Nobuhisa, Ishikawa, Kenichi L., Fukuda, Shigekazu, Maeyama, Takuya
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8701283/
https://www.ncbi.nlm.nih.gov/pubmed/34940293
http://dx.doi.org/10.3390/gels7040233
Descripción
Sumario:MRI-based gel dosimeters are attractive systems for the evaluation of complex dose distributions in radiotherapy. In particular, the nanocomposite Fricke gel dosimeter is one among a few dosimeters capable of accurately evaluating the dose distribution of heavy ion beams. In contrast, reduction of the scanning time is a challenging issue for the acquisition of three-dimensional volume data. In this study, we investigated a three-dimensional dose distribution measurement method for heavy ion beams using variable flip angle (VFA), which is expected to significantly reduce the MRI scanning time. Our findings clarified that the whole three-dimensional dose distribution could be evaluated within the conventional imaging time (20 min) and quality of one cross-section.

Ejemplares similares