Monolithinc photodetector for dosimeter

Patent metadata

Field	Value
Publication number	US-2020101326-A1
Application number	US-201916589210-A
Country	US
Kind code	A1
Filing date	Oct 1, 2019
Priority date	Apr 22, 2015
Publication date	Apr 2, 2020
Grant date	—

Abstract

Detectors, system and methods for measuring radiation using plastic scintillating sensors with a detector unit that uses photodiodes and MPPC detectors instead of a CCD camera, and thus avoids the use of all free space optics.

First claim

1 . A dosimetry detector system, comprising
a housing comprising a light sensor and a processor; a radiation sensor cable comprising a scintillating fiber; wherein the light sensor is configured to measure light emitted by the scintillating fiber; wherein the light sensor is configured to generate an electrical signal in response to the measured light; and wherein the processor is configured to convert the electrical signal into a calculated radiation dose measurement in less than 1 second.

2 . The dosimetry detector system of claim 1 , wherein the processor is configured calculate the radiation dose measurement in at least 0.002 seconds.

3 . The dosimetry detector system of claim 1 , further comprising:
wherein the calculated radiation dose measurement is time-resolved at a rate of up to at least 500 measurements per second.

4 . The dosimetry detector system of claim 1 , wherein the light sensor is a multi-pixel photon counter, a photodiode or a photomultiplier tube.

5 . The dosimetry detector system of claim 1 , further comprising a display unit.

6 . The dosimetry detector system of claim 5 , wherein the display unit is configured to display the calculated radiation dose measurement to a user in real-time.

7 . The dosimetry detector system of claim 1 , wherein the radiation sensor cable is configured to be operably connected to the housing.

8 . The dosimetry detector system of claim 1 , wherein the housing further comprises a power supply.

9 . The dosimetry detector system of claim 1 , wherein the radiation sensor cable is configured to be calibrated.

10 . The dosimetry detector system of claim 1 , wherein the housing further comprises a lead shielding.

11 . The dosimetry detector system of claim 1 , wherein the electrical signal may comprise electrons or photo-electrons.

12 . The dosimetry detector system of claim 8 , wherein the power supply is a battery.

13 . The dosimetry detector system of claim 1 , wherein the scintillating fiber is configured to emit light in response to radiation exposure.

14 . The dosimetry detector system of claim 1 , further comprising a filter.

15 . The dosimetry detector system of claim 14 , wherein the filter comprises a mirror configured to split the measured light into at least two-color regions.

16 . The dosimetry detector system of claim 1 , wherein the calculated radiation dose measurement is compared with an actual radiation dose delivered to a patient.

17 . The dosimetry detector system of claim 1 , wherein the calculated radiation dose measurement is compared with a planned radiation dose to be delivered to the patient.

18 . The dosimetry detector system of claim 14 , wherein the filter comprises at least two mirrors configured to split the measured light into at least three-color regions.

19 . A dosimetry detector device, comprising
a housing comprising a light sensor, a trans-impedance amplifier, at least one filter, and a processor; wherein the light sensor is configured to measure a signal; wherein the trans-impedance amplifier and the at least one filter are configured to alter the signal measured by the light sensor; and wherein the processor is configured to convert the altered signal into a calculated radiation dose measurement in less than 1 second.

20 . A dosimetry device, comprising
a housing comprising a light sensor and a processor, wherein the light sensor is configured to measure light energy emitted from a scintillator; wherein the light sensor is configured to alter the light energy emitted from the scintillator into an altered signal; wherein the processor is configured to convert the altered signal into a calculated radiation dose measurement in less than 1 second.

Assignees

• Angiodynamics Inc

Inventors

• Zeringue Clint

Classifications

• G01T1/023

  Scintillation dose-rate meters · CPC title

• A61N5/1071 Primary

  for verifying the dose delivered by the treatment plan · CPC title

• A61N2005/1003

  having means for centering a radioactive source within the lumen, e.g. balloons · CPC title

• A61N5/1067

  in real time, i.e. during treatment · CPC title

• A61N5/1002

  Intraluminal radiation therapy · CPC title