Radio-transparent real-time dosimeter for interventional radiological procedures

A device for real-time measurement of a dose of radiological radiation absorbed by a region under inspection subjected to a flux of radiological radiation, the device comprising:

• an X-ray transparent dosimeter comprising at least a first bundle of measurement optical fibers containing at least one fiber placed in said region under inspection and adapted to generate a light signal on receiving radiological radiation in order to detect the incident radiation at least one point of the region under inspection;
• measurement means for measuring said light signal away from the region under inspection after the light signal has been transmitted along the measurement optical fiber;
• and means for determining the dose of radiological radiation received by said measurement optical fiber on the basis of said light signal;
• and
• in which the light signal is transmitted to a detector device used for measuring it, transmission taking place along the measurement optical fiber used for detecting the radiation, said fiber having a first end, and along at least one clear optical fiber extending from a first end of the clear fiber that is connected to the first end of the measurement optical fiber to a second end of the clear fiber, which second end is placed facing the detector device, and in which the means for determining the dose of radiation received at said point of said measurement optical fiber comprise a control unit containing parameters that are specific to the optical fibers used.

A device for real-time measurement of a dose of radiological radiation absorbed by a region under inspection subjected to a flux of radiological radiation, the device comprising:

• an X-ray transparent dosimeter comprising at least a first bundle of measurement optical fibers containing at least one fiber placed in said region under inspection and adapted to generate a light signal on receiving radiological radiation in order to detect the incident radiation at least one point of the region under inspection;
• measurement means for measuring said light signal away from the region under inspection after the light signal has been transmitted along the measurement optical fiber;
• and means for determining the dose of radiological radiation received by said measurement optical fiber on the basis of said light signal;
• and
• in which the first fiber bundle is disposed along a first direction and in which the dosimeter further comprises a second bundle of optical fibers comprising at least one second measurement optical fiber disposed in a second direction forming an angle with the first direction.

A device for real-time measurement of a dose of radiological radiation absorbed by a region under inspection subjected to a flux of radiological radiation, the device comprising:

• an X-ray transparent dosimeter comprising at least a first bundle of measurement optical fibers containing at least one fiber placed in said region under inspection and adapted to generate a light signal on receiving radiological radiation in order to detect the incident radiation at least one point of the region under inspection;
• measurement means for measuring said light signal away from the region under inspection after the light signal has been transmitted along the measurement optical fiber;
• and means for determining the dose of radiological radiation received by said measurement optical fiber on the basis of said light signal;
• and
• in which at least one bundle of optical fibers is integrated in an examination table.

A radiological installation comprising:

• an X-ray transparent dosimeter comprising at least one bundle having at least one measurement optical fiber placed in a region under inspection, and adapted to generate a light signal on receiving radiological radiation, so as to enable the incident radiation to be detected at least one point of said region under inspection;
• measurement means for measuring said light signal away from the region under inspection after it has been transmitted along the measurement optical fiber;
• and means for determining the dose of radiological radiation received by said measurement optical fiber on the basis of said light signal, and further comprising:
• a radiation generator;
• a radiographic detector;
• and means for displaying the radiation dose received, said means also enabling radiographic images to be displayed of the region under inspection as supplied by the radiographic detector;
• an examination table;
• and
• wherein said at least one bundle of measurement optical fibers is integrated in the examination table.

A method of measuring in real time a radiological radiation dose absorbed by a region under inspection subjected to a flux of radiological radiation, the method comprising the steps consisting in:

• a) detecting the incident radiation at at least one point of the region under inspection using an X-ray transparent dosimeter comprising at least a first bundle of measurement optical fibers extending in a first direction and containing at least one fiber placed in said region under inspection and adapted to generate a light signal on receiving radiological radiation, and a second optical fiber bundle containing at least one second measurement optical fiber adapted to generate a light signal on receiving radiological radiation, and extending along a second direction forming an angle with the first direction;
• b) measuring said light signal away from the region under inspection after it has been transmitted along the measurement optical fiber;
• and
• c) determining the dose of radiological radiation received by said measurement optical fiber on the basis of said light signal.