X-Ray Anode Temperature Prediction for Imaging Workflow Throughput
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Solution Overview
Problem
The throughput of X-ray imaging systems is limited by the need for cooling down after high power imaging scans, leading to delays in patient scanning and inefficient system operation.
Innovation Solution
An apparatus and method that utilize a digital twin model or trained machine learning model to predict the temperature profile of the X-ray anode during an upcoming imaging sequence, adjusting scan parameters and sequence to maintain the temperature within safe limits, thereby optimizing system throughput and extending the life of the X-ray tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high power imaging scans are performed in sequence, then imaging productivity is improved, but the X-ray anode temperature exceeds maximum allowable limits causing system downtime for cooling
Solution Approach 1:
The system performs preliminary temperature prediction and workflow optimization before executing the imaging sequence. By calculating the estimated temperature profile in advance and adjusting the scan plan proactively, the system prevents temperature violations before they occur, eliminating the need for cooling downtime and maintaining continuous high-productivity operation
Solution Approach 2:
The system dynamically adjusts the imaging workflow based on real-time temperature predictions. Scan parameters such as tube current, voltage, and scan timing are adaptively modified to maintain anode temperature within safe limits while maximizing imaging throughput, transforming a static cooling schedule into a dynamic optimization process
2Speed
If the X-ray imaging system operates at maximum power continuously, then imaging speed is improved, but the lifetime of the X-ray tube is reduced due to excessive heat
Solution Approach 1:
The system implements a feedback mechanism where temperature predictions from the digital twin model continuously inform workflow adjustments. By monitoring estimated temperature profiles and adjusting scan parameters in response, the system maintains optimal operating conditions that preserve tube lifetime without sacrificing imaging speed
Solution Approach 2:
The system changes operational parameters such as tube current, voltage, and scan timing based on predicted temperature conditions. These parameter adjustments allow the system to operate at high speeds when temperatures are acceptable while reducing power when temperatures approach limits, thereby extending tube lifetime without compromising overall imaging efficiency
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
Enhances system efficiency by balancing heating and cooling rates, allowing for precise image capture while preventing tube damage, and optimizing system performance and longevity.
Implementation Method 1
information about a heat capability and a cooling rate of the X-ray anode
Implementation Method 2
information about a heat capability and a cooling rate of the tube housing
Data Source
AI summary
The present invention relates to X-ray imaging. In order to improve the throughout of an X-ray imaging system, an apparatus is provided for managing an imaging workflow of an X-ray imaging system for an upcoming imaging sequence. The apparatus comprises an input unit, a processing unit, and an output unit. The input unit is configured to receive data including (i) a current temperature profile of an X-ray anode inside a tube housing of the X-ray imaging system, (ii) information about a heat capability and a cooling rate of the X-ray anode, (iii) information about a heat capability and a cooling rate of the tube housing, (iv) information about a current operation condition of the X-ray imaging system, and (v) information about a planned operation condition of the X-ray imaging system for the upcoming imaging sequence, wherein the planned operation condition comprises a sequence of planned scans, each planned scan being associated with a respective set of planned scan parameters. The processing unit is configured to determine, based on the received data, an estimated temperature profile of the X-ray anode under the planned operation condition for the upcoming imaging sequence. The processing unit is configured to compare the estimated temperature profile of the X-ray anode with a maximum allowable hardware temperature of the X-ray anode. In response to the determination that the estimated temperature profile is greater than or equal to the maximum allowable hardware temperature of the X-ray anode, the processing unit is configured to modify the planned operation condition such that the estimated temperature profile of the X-ray anode under the modified planned operation condition is less than the maximum allowable hardware temperature of the X-ray anode. The modified planned operation condition comprises a change of the sequence of planned scans and/or a change of the set of planned scan parameters for one or more planned scans. The output unit is configured to provide the modified planned operation condition for the upcoming imaging sequence.