Can I read Feasibility of Synchronization of Real-time Tumor-tracking Radiotherapy and Intensity-modulated Radiotherapy from Viewpoint of Excessive Dose from Fluoroscopy on EtoBox?

Feasibility of Synchronization of Real-time Tumor-tracking Radiotherapy and Intensity-modulated Radiotherapy from Viewpoint of Excessive Dose from Fluoroscopy by Hiroki Shirato; Masataka Oita; Katsuhisa Fujita; Yoshiharu Watanabe; Kazuo Miyasaka is a Medicine article available to read on EtoBox.

What is Feasibility of Synchronization of Real-time Tumor-tracking Radiotherapy and Intensity-modulated Radiotherapy from Viewpoint of Excessive Dose from Fluoroscopy about?

## Purpose: Synchronization of the techniques in real-time tumor-tracking radiotherapy (rtrt) and intensity-modulated rt (imrt) is expected to be useful for the treatment of tumors in motion. our goal was to estimate the feasibility of the synchronization from the viewpoint of excessive dose resulting from the use of fluoroscopy. ## Methods and materials: Using an ionization chamber for diagnostic x-rays, we measured the air kerma rate, surface dose with backscatter, and dose distribution in depth in a solid phantom from a fluoroscopic rtrt system. a nominal 50-120 kilovoltage peak (kvp) of x-ray energy and a nominal 1-4 ms of pulse width were used in the measurements. ## Results: The mean +/- sd air kerma rate from one fluoroscope was 238.8 +/- 0.54 mgy/h for a nominal pulse width of 2.0 ms and nominal 100 kvp of x-ray energy at the isocenter of the linear accelerator. the air kerma rate increased steeply with the increase in the x-ray beam energy. the surface dose was 28-980 mgy/h. the absorbed dose at a 5.0-cm depth in the phantom was 37-58% of the peak dose. the estimated skin surface dose from one fluoroscope in rtrt was 29-1182 mgy/h and was strongly dependent on the kilovolt

Who reads Feasibility of Synchronization of Real-time Tumor-tracking Radiotherapy and Intensity-modulated Radiotherapy from Viewpoint of Excessive Dose from Fluoroscopy?

Author

Hiroki Shirato; Masataka Oita; Katsuhisa Fujita; Yoshiharu Watanabe; Kazuo Miyasaka

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0360-3016)

Published

2004

Language

EN

Field

Medicine (Health Sciences)