MEDICAL APPARATUS COMPRISING HADRON THERAPY DEVICE, MRI, AND HADRON RADIOGRAPHY SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a medical apparatus comprising a hadron therapy device, an MRI, and a hadron radiography system.SOLUTION: Provided is a medical apparatus, comprising: a hadron therapy device in which an initial imaging beam path goes through a subject of interest having a plurality of tissues and crossed by the beam path between an upstream boundary and a downstream boundary, and a target spot disposed in a target tissue of the subject of interest; a magnetic resonance imaging device for acquiring magnetic resonance data within an imaging volume including a portion of the subject of interest having the target spot and at least a portion of the beam path between the upstream boundary and the target spot; a hadron radiography system (HRS) 3 adapted to acquire a signal generated by an imaging hadron beam; and a controller 5 configured to determine a water equivalent path length of the beam path between the upstream boundary and the downstream boundary based at least in part on the signal acquired by the HRS.SELECTED DRAWING: Figure 7