Figure 1. The number of receipts related to medical fee code M000. Simple, single-field and parallel-opposed field radiotherapies; Complex, nonparallel-opposed two-field and three-field radiotherapies and intracavitary brachytherapy; Special, four or more field, rotation, and conformal arc radiotherapies and interstitial brachytherapy; IMRT, intensity-modulated radiation therapy.

From: National Survey of Radiotherapy Utilization Trends from 2015 to 2019, Based on the National Database of Health Insurance Claims and Specific Health Checkups of Japan