Purpose: To develop and evaluate a new four-dimensional image-guided radiotherapy
system, which enables precise setup, real-time tumor tracking, and pursuit irradiation. Methods …

PURPOSE: To recognize the current status of stereotactic body radiotherapy (SBRT) in
Japan, using a nationwide survey conducted by the Japan 3-D Conformal External Beam …

The purpose of this study was to measure the cumulated activity and absorbed dose in
organs after intravenous administration of 2-[F-18]fluoro-2-deoxy-d-glucose ( 18 F-FDG) using …

IJLmaps in the lower slices due to the airways and in the higher slices due to increased skull
attenuation. However, differences were< 5% in all cerebral tissue regions, thus assumption …

Our newly designed image-guided radiotherapy (IGRT) system enables the dynamic tracking
irradiation with a gimbaled X-ray head and a dual on-board kilovolt imaging subsystem for …

Purpose: This study was performed to evaluate magnetic resonance imaging (MRI) in
determining the therapeutic effect of radiotherapy (RT) on cervical cancer. Methods and Materials: …

Purpose: We evaluated the clinical significance of hypofractionated high-dose irradiation
using simultaneous integrated boost technique with intensity-modulated radiation therapy (…

Since stereotactic body radiotherapy (SBRT) was started for patients with lung tumor in 1998
in our institution, x‐ray fluoroscopic examination and slow computed tomography (CT) scan …

This study aims to assess the impact of motion velocity that may cause motion artifacts on
target volumes (TVs) using a one‐dimensional moving phantom. A 20 mm diameter spherical …

The purpose of this study was to investigate the relationship between tumor size and blood
volume for patients with lung tumors, using dual-energy computed tomography (DECT) and a …