[Cone-beam computed tomography-derived adaptive radiotherapy].

0Citations
Citations of this article
11Readers
Mendeley users who have this article in their library.

Abstract

The purpose of this study was to evaluate the reliability of cone-beam computed tomography (CBCT)-derived adaptive radiotherapy. We evaluate planning computed tomography (pCT) and CBCT in 50 patients who had undergone image guided radiotherapy (IGRT) with CBCT. Irradiated sites included head, neck, chest, abdomen, and pelvis; there were 10 patients in each group. Treatment plans including 153 beam data were recalculated based on CBCT. To compare between pCT and CBCT, we estimated CT values of normal tissues, body contour, effective depth, and monitor units (MU) calculation. The maximum difference in CT values was observed in lung estimation. The 5 mm or more differences in depth were observed in 2 beams of 2 pelvic cases, but CBCT also demonstrated a shift of abdominal wall due to intestinal motility. There were downward trends for the effective depth and MU based on CBCT, especially in lung cases. However, the differences in prescribed dose due to MU calculation were less than 5% because all patients were treated with a multifield irradiation plan. CBCT provides not only precise daily setup but also accurate anatomical information on body contour. In addition, CBCT may be considered as a useful tool for dose calculation.

Cite

CITATION STYLE

APA

Maruyama, M., Murakami, R., Nakaguchi, Y., Kakei, K., Takenaga, E., Tsujita, N., … Matsuyama, T. (2012). [Cone-beam computed tomography-derived adaptive radiotherapy]. Nihon Hoshasen Gijutsu Gakkai Zasshi, 68(2), 162–168. https://doi.org/10.6009/jjrt.2012_JSRT_68.2.162

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free