The present application provides a boron neutron capture therapy system, including a neutron capture therapy device, a photon emission detector and a treatment bed, wherein the neutrons generate gamma rays after being irradiated with a boron (10B) drug, and the photon emission detector. Surrounds the outer circumference of the treatment bed, and includes a detector that detects gamma rays generated after neutrons are irradiated with a boron (10B) drug, and the detector includes a first detector and a second detector, The first detection part and the second detection part can be spaced apart from or close to each other, so that the detection part forms an annular shape whose radius can be increased or decreased, and the annular shape surrounds the treatment bed. The present application is used in the photon emission detection device of the boron neutron capture treatment system, the detector can change the annular radius surrounding the irradiated object based on the actual situation during the boron neutron capture treatment, whereby the photon Improve the accuracy of the launch detection device.本願は、ホウ素中性子捕捉治療システムを提供し、中性子捕捉治療装置、光子発射検出装置および治療ベッドを含み、前記中性子は、硼素（１０Ｂ）薬物を照射した後にガンマ線を生成し、前記光子発射検出装置は、前記治療ベッド外周を取り巻き、かつ、中性子が硼素（１０Ｂ）薬物を照射した後に生成したガンマ線を検出する検出部を含み、前記検出部は、第一検出部と第二検出部を含み、前記第一検出部と第二検出部が相互に離間または接近することができることにより、検出部が半径の増加又は、減少可能な環状を形成し、前記環状は、前記治療ベッドを取り巻く。本願は、ホウ素中性子捕捉治療システムの光子発射検出装置に用いられてホウ素中性子捕捉治療中の実際状況に基づいて検出部が被照射物を取り巻く環状の半径を変更することができ、それにより前記光子発射検出装置の精度を向上させる。
