Detector Carrier Cooling Channels for Stable SPECT Camera Temperature
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Solution Overview
Problem
Nuclear medicine tomography systems face challenges in effectively cooling detector cameras and maintaining optimal temperatures for both detector performance and patient comfort, with existing systems often relying on inefficient air circulation and temperature control methods.
Innovation Solution
The system incorporates a detector carrier with a cooling channel and exhaust channel, utilizing a heat pump and fans to circulate air through the channels, with a processor controlling airflow based on temperature sensors to maintain detector camera temperatures below a threshold and regulate room temperature for patient comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional air cooling methods are used for detector cameras, then the system structure is simple, but the cooling efficiency is insufficient and detector noise increases
Solution Approach 1:
The cooling system is segmented into multiple independent components: detector carrier housing with internal channels, separate cooling channels for different detector units, and distributed heat pump units. Each detector unit has its own cooling pathway, allowing independent temperature control and improving overall cooling efficiency without requiring a monolithic complex system
Solution Approach 2:
The cooling channels are nested within the detector carrier housing structure. The channels are integrated into the housing walls and internal framework, with cooling passages embedded within the structural components. This nesting approach provides efficient cooling while maintaining compact system geometry and avoiding additional external cooling infrastructure
2Temperature
If aggressive cooling is applied to detector cameras, then detector temperature is well controlled, but patient comfort deteriorates due to cold environment
Solution Approach 1:
The cooling system applies localized cooling exclusively to detector camera regions through targeted cooling channels positioned adjacent to detector units. The cooling is confined to specific zones where detectors are mounted, while other areas including the patient bore and surrounding structures maintain ambient temperatures. This selective cooling achieves detector temperature control without creating a generally cold environment that would discomfort patients
Solution Approach 2:
The thermal environment is segmented into distinct zones: cooled zones around detector cameras and uncooled zones in the patient area. Separate air circulation paths and independent temperature control for different regions allow the system to maintain low detector temperatures while preserving comfortable ambient conditions for patients during examination
3Reliability
If air circulation is increased to improve cooling, then detector cooling efficiency improves, but energy consumption increases
Solution Approach 1:
Temperature sensors are positioned near detector units to monitor actual detector temperature in real-time. The sensor signals are fed back to the control system, which adjusts heat pump operation and fan speed accordingly. This feedback control ensures cooling is provided only when and where needed, optimizing cooling efficiency while minimizing energy consumption by avoiding unnecessary high-speed operation
Solution Approach 2:
The cooling system operates dynamically with adjustable parameters including variable fan speeds and controllable heat pump compression ratios. The system can adapt its cooling intensity based on detector temperature requirements, ambient conditions, and operational phase. This dynamic operation allows efficient cooling during high-load periods while reducing energy consumption during low-demand periods
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
This approach enhances cooling efficiency, reduces detector camera noise, and maintains comfortable temperatures for patients by precisely controlling air flow and temperature within the system, improving overall imaging performance and patient experience.
Implementation Method 1
a heat pump configured to cool air within the inner space
Implementation Method 2
a cooling channel, which guides air to the detector camera from the inner space
Implementation Method 3
an exhaust channel, which guides air from the detector camera to the inner space
Data Source
AI summary
A nuclear medicine tomography system including: a detector carrier; a detector carrier housing including an inner space; a plurality of detector units, coupled to the detector carrier, each detector unit comprising: a detector camera; a cooling channel which guides air to the detector camera from the inner space; an exhaust channel which guides air from the detector camera to the inner space; a heat pump configured to cool air within the inner space.