PET Detector Assembly Thermal Management via Heat Pipe
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cooling systems for PET detectors in dual-modality imaging systems interact adversely with CT imaging systems, reducing the effectiveness of either imaging system.
Innovation Solution
A PET detector assembly with a thermally conductive plate incorporating a heat pipe to extract and transfer heat away from the readout electronics, using a thermal interface to couple with a coolant structure or thermoelectric cooler to maintain optimal operational temperatures for the PET detector units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional cooling systems are used for PET detectors, then heat from readout electronics is removed, but adverse interactions with CT imaging systems occur that reduce image effectiveness
Solution Approach 1:
The detector assembly is segmented into distinct thermal zones: the PET detector units are thermally isolated from the CT detector, while the readout electronics section is thermally coupled to the plate for heat extraction. This segmentation allows independent thermal management for each imaging modality, preventing thermal interference between PET and CT systems while maintaining effective cooling for the PET detector units.
2Measurement precision
If readout electronics are mounted close to photodiodes, then signal integrity is preserved, but heat generated by electronics affects photodiode operation
Solution Approach 1:
The plate exhibits different thermal properties in different regions: the section adjacent to the photodiodes maintains low thermal conductivity to isolate them from heat, while the section adjacent to the readout electronics has high thermal conductivity to extract heat. This local quality variation allows the readout electronics to be mounted close to the photodiodes for signal integrity while preventing thermal interference with the photodiodes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively manages heat generated by readout electronics, maintaining PET detector units within an optimal temperature range and preventing adverse interactions with CT imaging systems, thus preserving image effectiveness for both modalities.
Implementation Method 1
The plate comprises a heat pipe disposed within the plate and configured to extract the heat from the plate and to transfer the heat away from the plate
Implementation Method 2
The PET detector assembly includes a plate having a first side and an opposite second side, the plate being fabricated from a thermally conductive material
Data Source
AI summary
A positron emission tomography (PET) detector assembly is provided. The PET detector assembly includes a plate having a first side and an opposite second side, the plate being fabricated from a thermally conductive material. The PET detector assembly also includes multiple PET detector units coupled to the first side of the plate. The PET detector assembly further includes a readout electronics section coupled to the second side of the plate, wherein, during operation, the readout electronics section generates heat that is transferred to the plate. The plate comprises a heat pipe disposed within the plate and configured to extract the heat from the plate and to transfer the heat away from the plate.