Radiotherapy system and control method for radiotherapy system

摘要

A radiotherapy system has: a placing unit placing a subject; an imaging unit performing an imaging of the subject; a region setting unit setting a required region of first image data obtained by the imaging unit performing the imaging of the subject and setting a corresponding required region of second image data obtained by, before the imaging, performing a pre-imaging of the subject; a histogram generating unit generating a dose-volume histogram of the required region of the first image data and generating a dose-volume histogram of the required region of the second image data; a difference computing unit computing a difference between the dose-volume histogram of the required region of the first image data and the dose-volume histogram of the required region of the second image data; and an outputting unit, if it is determined that the difference is greater than a threshold value, outputting the determination to an outside.

主权项

1. A radiotherapy system, comprising:
a placing unit; a scanning unit; a processing circuitry; and a memory, wherein the processing circuitry is configured to:
control the placing unit and the scanning unit, and perform a scan of a subject on the placing unit;set a required region of first image data obtained by the scan, and set a corresponding required region of second image data obtained by performing a pre-scan of the subject, the required region of the first image data including a treatment organ and an organ that is not irradiated;generate a dose-volume histogram of the required region of the first image data and generate a dose-volume histogram of the required region of the second image data;compute a difference between the dose-volume histogram of the required region of the first image data and the dose-volume histogram of the required region of the second image data; andoutput, when it is determined that the difference is greater than a threshold value, the determination, wherein the second image data is data used in radiotherapy planning, and the first image data is data obtained after the radiotherapy planning.