Dosimeter system

Patent metadata

Field	Value
Publication number	US-9468406-B2
Application number	US-201314913511-A
Country	US
Kind code	B2
Filing date	Aug 20, 2013
Priority date	Aug 20, 2013
Publication date	Oct 18, 2016
Grant date	Oct 18, 2016

Abstract

A dosimeter system for determining radiation exposure including first and second units, where the first unit determines a first quantity indicating influence of a first radiation field, and transmitting the first quantity by the first detecting-unit to the second unit, where the second unit determines second quantity indicative of influence of a second radiation field on biological tissue, third detecting-unit determines a third quantity indicative of an influence of the second radiation field, where the third detecting-unit is of the same type as the first detecting-unit included by the first unit, and determining quantity for adjusting the first quantity on basis of the second quantity by the second detecting-unit and third quantity by the third detecting-unit, adjusting the first quantity so a fourth quantity indicative of an influence of the first radiation field on biological tissue based on the first quantity by the first detecting-unit and adjusting the first quantity.

First claim

What is claimed is:

1. A dosimeter system for determining radiation exposure comprising a first unit and a second unit,
wherein the first unit comprises:
first detecting means configured for determining a first quantity indicative of an influence of a first radiation field; and
transmitting means for transmitting the first quantity determined by the first detecting means to the second unit;
wherein the second unit comprises:
second detecting means configured for determining a second quantity indicative of an influence of a second radiation field on biological tissue;
third detecting means configured for determining a third quantity indicative of an influence of the second radiation field, wherein the third detecting means is of the same type as the first detecting means comprised by the first unit; and
means for determining a quantity for adjusting the first quantity on the basis of the second quantity determined by the second detecting means and the third quantity determined by the third detecting means, wherein the quantity for adjusting the first quantity is determined such that a fourth quantity indicative of an influence of the first radiation field on biological tissue can be determined on the basis of the first quantity determined by the first detecting means and the quantity for adjusting the first quantity.

2. The dosimeter system according to claim 1 , wherein the second unit further comprises means for determining the fourth quantity indicative of an influence of the first radiation field on biological tissue on the basis of the first quantity determined by the first detecting means and the quantity for adjusting the first quantity.

3. The dosimeter system according to claim 1 , wherein the first quantity is a quantity indicative of an influence of the first radiation field on biological tissue and the third quantity is a quantity indicative of an influence of the second radiation field on biological tissue.

4. The dosimeter system according to claim 1 , wherein the first quantity is a dose equivalent and the third quantity is a dose equivalent.

5. The dosimeter system according to claim 1 ,
wherein the first unit further comprises means for determining a position of the first unit;
the transmitting means is configured to transmit the first quantity determined by the first detecting means and the determined position of the first unit to the second unit; and
the second unit comprises means for determining a function indicative of an intensity of the first radiation field in dependence on the position of the first on the basis of the first quantity and the determined position of the first unit.

6. The dosimeter system according to claim 5 ,
wherein the system comprises a plurality of first; and
the second unit comprises means for determining a spatial distribution of the first radiation field in which the plurality of first units are present on the basis of the respective functions indicative of the intensity of the first radiation field in dependence on the position of the respective first unit.

7. The dosimeter system according to claim 1 ,
wherein the first detecting means comprises a first detecting device configured for detecting a first variable related to an ionizing particle incident on the first detecting; and
the first detecting device has a first range in which the first variable can be detected.

8. The dosimeter system according to claim 7 ,
wherein the first detecting means further comprises a second detecting device configured for detecting a second variable related to an ionizing particle incident on the second detecting device;
the second detecting device a second range in which the second variable can be detected; and
the first detecting means is configured to obtain the first quantity on the basis of an output of the first and second detecting devices.

9. The dosimeter system according to claim 8 ,
wherein the first and second detecting devices are configured so that a range obtained by combining the first and second ranges consists of a first sub-range covered by the first detecting device only, a second sub-range covered by the second detecting device only, and a third sub-range covered by both the first and second detecting devices.

10. The dosimeter system according to claim 8 ,
wherein the first detecting means further comprises a third detecting device configured for detecting a third variable related to an ionizing particle incident on the third detecting device;
the third detecting device a third range in which the third variable can be detected;
a range obtained by combining the first and second ranges is fully contained in the third range; and
the first detecting means is configured to obtain the first quantity on the basis of an output of the first, second and third detecting devices.

11. The dosimeter system according to claim 10 , wherein the first variable, the second variable and the third variable are a deposited energy or a linear energy transfer.

12. The dosimeter system according to claim 1 , wherein the first detecting means comprises a fourth detecting device configured for detecting a time-integrated value of a fourth variable related to an ionizing particle incident on the fourth detecting device.

13. The dosimeter system according to claim 12 , wherein the fourth variable is an energy deposited in the fourth detecting device, and the fourth detecting device is configured for detecting a total energy that is deposited in the fourth detecting device by ionizing particles over time.

14. The dosimeter system according to claim 1 , wherein the first unit comprises
a shock detector configured for detecting a mechanic shock of the first unit; and
means for correcting the first quantity determined by the first detecting means for an influence of the mechanic shock of the first unit detected by the shock detector.

15. The dosimeter system according to claim 1 , wherein the second unit comprises mounting means configured for receiving the first unit in the mounting means, for charging a battery of the first unit and for read or write operations to or from a memory of the first unit.

16. A method for determining radiation exposure, comprising:
determining a first quantity indicative of an influence of a first radiation field by a first detecting
determining a second quantity indicative of an influence of a second radiation field on biological tissue by a second detecting means;
determining a third quantity indicative of an influence of the second radiation field by a third detecting means, wherein the third detecting means is of the same type as the first detecting means;
determining a quantity for adjusting the first quantity on the basis of the second quantity determined by the second detecting means and the third quantity determined by the third detecting means; and
determining a fourth quantity indicative of an influence of the first radiation field on biological tissue on the basis of the first quantity determined by the first detecting means and the quantity for adjusting the first quantity.

Assignees

• ESA

Inventors

• Dieckmann Matthias
• Straube Ulrich
• Berger Thomas
• Luszik-Bhadra Marlies

Classifications

• G01T1/185

  with ionisation chamber arrangements · CPC title

• A61B5/4845 Primary

  Toxicology, e.g. by detection of alcohol, drug or toxic products (A61B5/4848 takes precedence) · CPC title

• G01T1/026 Primary

  Semiconductor dose-rate meters · CPC title

• G01T7/00

  Details of radiation-measuring instruments · CPC title