Radiation Detector Integrity Verification via Electrical Testing
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Solution Overview
Problem
Radiation detectors in medical imaging systems often suffer from compromised integrity due to excessive acceleration forces, leading to false positives and negatives, as existing accelerometer-based systems are unreliable in detecting damage.
Innovation Solution
A system and method that involves inducing a voltage in detector elements and obtaining readings via data modules to determine the integrity of the radiation detector by comparing the readings to a benchmark, eliminating the need for accelerometers and directly testing data lines for integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If accelerometer-based systems are used to detect damage, then damage detection capability is provided, but false positives and false negatives occur due to unreliable detection
Solution Approach 1:
The patent replaces the mechanical accelerometer-based detection system with an electrical testing system. The controller applies test voltages to detector elements and measures electrical responses through data lines to determine integrity, substituting mechanical acceleration sensing with electrical property measurement. This resolves the reliability and precision issues of accelerometer false positives and negatives.
Solution Approach 2:
The detector elements themselves perform the integrity testing by responding to applied voltages. Each detector element is tested individually through its data line, allowing the system to self-diagnose without external mechanical sensing. The electrical response of each element serves as its own integrity indicator, eliminating reliance on separate accelerometer components.
2Ease of manufacture
If substrates are made thin for ease of manufacture, then manufacturing ease is improved, but susceptibility to acceleration damage increases
Solution Approach 1:
The patent performs integrity testing before the radiation detector is deployed into service. The controller executes voltage tests on all detector elements and data lines prior to clinical use, identifying any acceleration-induced damage in advance. This preliminary detection prevents compromised detectors from being used, addressing the vulnerability of thin substrates to acceleration forces.
Solution Approach 2:
The system provides feedback on detector integrity by comparing measured electrical responses against expected benchmarks. The controller determines whether each detector element and data line is functional based on the electrical response, creating a feedback loop that identifies damage from acceleration events and prevents false imaging results.
3Reliability
If comprehensive integrity testing is performed, then detection reliability is improved, but system complexity increases
Solution Approach 1:
The controller performs multiple functions using the same electrical testing infrastructure. It applies test voltages, measures responses, determines integrity, and can operate during manufacturing and before deployment. The data lines serve both normal detector operation and integrity testing purposes, reducing overall system complexity while maintaining comprehensive verification capability.
Solution Approach 2:
The existing detector element structure and data line connections are utilized for self-testing without requiring separate dedicated test components. Each detector element's inherent electrical properties are measured through its operational data line, allowing the system to verify its own integrity using its existing architecture rather than adding complex external testing equipment.
Data Source
AI summary
A system for verifying the integrity of a radiation detector is provided. the system includes one or more data modules, one or more data lines, and a controller. The one or more data lines electronically connect one or more detector elements of the radiation detector to the one or more data modules. Each of the detector elements is operative to detect electromagnetic radiation. The controller is operative to induce a voltage in the one or more detector elements, obtain a reading from the one or more detector elements via the one or more data modules; and determine whether the integrity of the radiation detector has been compromised based at least in part on comparing the reading to a benchmark.