| 摘要 |
The present invention relates to a system (10) for measuring a dose of ionizing radiation received by a pre-determined part of the body during radiotherapy or interventional procedures. The system (10) comprises: a) a light guide (1), which under the influence of ionizing radiation undergoes measurable and quantifiable physical changes; b) a detector system (5) which allows the recording and quantification of the signal emitted by the light guide (1); and c) a control unit (6) which is adapted for calculating a dose of ionizing radiation previously or simultaneously received by the light guide (1) on basis of said response signal. The light guide (1) is coated over at least part of its length with a coating comprising a first component (2) acting as a place dependent spectral filter and a second component (3) including at least one luminescent material, dispersed in a transparent matrix. When exposed to radiation, the luminescent component will emit light with a spectrum depending on the chosen material. An algorithm in the control unit (6) relates the total amount of light (proportional to the dose received at each location), as recorded by the detector system (10), into a dose distribution along the coated length of the light guide (1). The invention also relates to a method for measuring a received dose of ionizing radiation using a single light guide (1) with a double component coating, along at least part of the length of the light guide (1). |
