# US 2014/0153701 A1 · Gamma source tracking system

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- Number: US 2014/0153701 A1
- Document ID: US20140153701A1
- Status: Published application
- Kind: A1
- Application number: 14/158,568
- Filed: 2012-07-19
- Published: 2014-06-05
- Earliest claimed: 2011-07-20
- Assignees: Nucletron Operations B.V.
- Applicants: Nucletron Operations B.V.
- Inventors: Johan Henning; Bas Woudstra; Jeroen Schuurman
- Web page: https://patentgrep.com/patent/US20140153701A1

## CPC

- A61N 5/1001: {using radiation sources introduced into or applied onto the body; brachytherapy}
- A61N 5/1027: {Interstitial radiation therapy}
- A61N 5/1048: {Monitoring, verifying, controlling systems and methods}
- G01T 1/1644: {using an array of optically separate scintillation elements permitting direct location of scintillations (G01T1/1645 takes precedence)}
- A61N 2005/1052: {using positron emission tomography [PET] single photon emission computer tomography [SPECT] imaging}
- A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B)
- G01T: MEASUREMENT OF NUCLEAR OR X-RADIATION (radiation analysis of materials, mass spectrometry G01N23/00; tubes for determining the presence, intensity, density or energy of radiation or particles H01J47/00)

## Abstract

An embodiment of the present disclosure is directed to a radioactive source tracking system adapted to determine in real time a spatial position of a gamma source in a volume, including a set of spatially distributed position sensitive detectors operable in real time arranged about the volume. The system includes a real time computer system adapted to calculate the spatial position per time stamp of the gamma source in the volume based on respective signals generated by the position sensitive detectors. In addition, the radioactive source is represented by a 3D or 4D data stream in real time. Other embodiments of the present disclosure are directed to a method for tracking a radioactive gamma source and a computer program product for causing a processor to determine a real time 3D or a 4D spatial position of a gamma source.

## Claims

### Claim 1

A radioactive source tracking system adapted to determine in real time a spatial position of a gamma source in a volume, comprising a set of spatially distributed position sensitive detectors (PSD) operable in real time arranged about the volume, a real time computer system adapted to calculate the spatial position per time stamp of the gamma source in the said volume based on respective signals generated by said PSD's, wherein the radioactive source is represented by a 3D or 4D data stream in real time.

### Claim at position 2

2-14. (canceled)