Dual-Collimator Detector Head for Fast Nuclear Imaging Switching
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Solution Overview
Problem
Existing nuclear medicine imaging systems require time-consuming mechanical processes to switch between different collimators for low and high energy applications, leading to downtime and inefficient workflow.
Innovation Solution
A radiation detector head assembly with dual collimators for low and high energy ranges, allowing automatic interchange within seconds without mechanical exchange, enabling seamless switching during scans involving different energy levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mechanical exchange process is used to switch between collimators, then different energy applications can be supported, but the process is time-consuming and causes downtime
Solution Approach 1:
The patent combines multiple collimators (low energy and high energy) into a single detector head assembly. The collimators are positioned at different locations on the same detector head, allowing the system to switch between energy applications without physically exchanging entire collimator-detector assemblies. This merging approach reduces switching time while maintaining adaptability to different energy requirements.
Solution Approach 2:
The patent implements a dynamic collimator selection mechanism where the system can automatically position and activate the appropriate collimator based on the imaging requirements. The detector head can dynamically switch between low energy and high energy collimators during operation, eliminating the need for static, manual collimator exchanges and reducing downtime.
2Adaptability or versatility
If manual collimator exchange is performed, then different energy ranges can be accommodated, but workflow efficiency is hampered
Solution Approach 1:
The system performs automatic collimator selection and switching without requiring manual intervention. The detector head autonomously determines which collimator (low energy or high energy) is appropriate for the current imaging task and activates it accordingly. This self-service capability eliminates manual exchange operations, improving workflow efficiency and patient throughput while maintaining comprehensive energy range coverage.
Solution Approach 2:
The detector head is designed with multi-functionality, incorporating both low energy and high energy collimators in a single universal assembly. This universal detector head can handle various imaging scenarios (low energy, high energy, and dual isotope) without requiring separate specialized equipment, thereby improving productivity while maintaining adaptability.
3Reliability
If separate detector heads are used for low and high energy applications, then optimal performance for each energy range is achieved, but system complexity increases
Solution Approach 1:
The patent merges the functionality of separate low energy and high energy detector heads into a single integrated detector head assembly. By positioning multiple collimators on one detector head and implementing automatic selection, the system achieves the energy-specific performance of specialized detectors while reducing the overall number of detector heads required, thus lowering system complexity.
Solution Approach 2:
The detector head is segmented into multiple functional zones, each equipped with a specific collimator (low energy, high energy). This segmentation allows each zone to be optimized for its specific energy range while being part of a unified detector head. The system can activate only the necessary segment for each imaging task, maintaining optimal performance without requiring fully separate detector heads for each energy type.
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
Facilitates rapid collimator changes, reducing downtime and improving workflow efficiency in nuclear medicine imaging systems.
Implementation Method 1
Depending on the application (low/medium energy versus high energy), a different collimator may be utilized for collimation
Implementation Method 2
Detectors (e.g., gamma cameras), typically installed on a gantry, capture the radiation emitted by the radiopharmaceuticals
Implementation Method 3
Each of the collimator-detectors comprises a scintillator block comprising a scintillator crystal element and a photodetector attached to the scintillator block
Data Source
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AI summary
A radiation detector head assembly includes a detector column including a detector having a first surface and a second surface opposite the first surface. The detector column includes a first collimator disposed over the first surface of the detector and a second collimator disposed over the second surface of the detector. The detector column includes a first radiation shield disposed over the first collimator, wherein the first radiation shield includes a first recess for receiving the first collimator and a first opening over a third surface of the first collimator, the third surface being opposite the first surface of the detector. The detector column includes a second radiation shield disposed over the second collimator, wherein the second radiation shield includes a second recess for receiving the second collimator and a second opening over a fourth surface of the second collimator, the fourth surface being opposite the second surface.