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Improved temperature stability for digital positron emission tomography (PET) detectors
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A thermal stability, gamma detector technology, applied in the field of nuclear imaging, can solve the problems of increased current draw, power overload, etc., to achieve the effect of improving imaging quality and quantification, and improving temperature stability
Active Publication Date: 2019-04-30
KONINKLJIJKE PHILIPS NV
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This charging causes an increase in current draw, often substantially, which can overload the power supply
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Embodiment 1
[0062] Embodiment 1: have the gamma detector 16 of thermal stability, described gamma detector (16) comprises:
[0063] at least one controller 36, 38 configured to:
[0064] setting the detection sensitivity of said detector 16 to a level that disables the detection of gamma photons;
[0065] Controlling the heat generators 36, 38, 86 maintains the temperature of the detector 16 at a predetermined temperature of the detector 16 when the detection sensitivity of the detector 16 is set to a level that enables detection of gamma photons. steady state temperature; and
[0066] The probe 16 is controlled to generate an error event to maintain the current temperature of the probe 16 at a predetermined temperature.
Embodiment 2
[0067]Embodiment 2: The detector 16 of embodiment 1, wherein the controllers 36, 38 are further configured to determine whether the detection sensitivity of the detector 16 is set to a level that disables the detection of gamma photons by :
[0068] A signal is monitored indicating whether gamma detector 16 is in a quiet mode corresponding to a detection sensitivity level at which detection of gamma photons is disabled, or a data collection mode corresponding to detection of gamma photons being enabled. The detection sensitivity level of the detection.
Embodiment 3
[0069] Embodiment 3: The detector 16 according to any one of Embodiments 1 and 2, further comprising:
[0070] a temperature sensor 88 for measuring the current temperature of the detector 16, wherein at least one controller 36, 38 is further configured to:
[0071] receiving a measurement of the current temperature of the detector 16; and
[0072] The heat generators 36, 38, 86 are controlled to maintain the received measurement of the current temperature of the detector 16 at a predetermined temperature.
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Abstract
A detector (16) maintains thermal stability between two different modes of operation. The detector (16) includes at least one controller (36, 38) that sets the detection sensitivity of the detector (16) to a level that disables detection of gamma photons. The controller (36, 38) also controls a heat generator (36, 38, 86) to maintain the temperature of the detector (16) at a predetermined temperature. The predetermined temperature is a steady state temperature of the detector (16) when the detection sensitivity of the detector (16) is set to a level enabling detection of gamma photons. Also provided is a method (100) for maintaining thermal stability of a detector (16) between two different modes of operation.
Description
technical field [0001] This application relates generally to nuclear imaging. The present application finds particular application in connection with temperature stability of digital positron emission tomography (PET) detectors and will be described with particular reference to this application. However, it should be understood that the present application also applies to other usage scenarios and is not necessarily limited to the aforementioned applications. [0002] US 2006 / 0076500 A1 discloses an X-ray detector and a method for maintaining the thermal stability of such an X-ray detector. The method includes determining whether the x-ray detector is not in operation. When the X-ray detector is not in operation, heat is generated by the Peltier element to maintain the X-ray detector within a predetermined temperature range. Thus, it is possible to prevent the X-ray detector from being damaged due to the occurrence of condensation. Background technique [0003] When a di...
Claims
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Application Information
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