Medical Imaging Scan-State Control for Multi-ROI Isocenter Alignment
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Solution Overview
Problem
Existing medical imaging systems face challenges in accurately and efficiently aligning the isocenter of medical devices with the center of each region of interest (ROI) during a sequence of scans, particularly in multi-region scans where the centers of each ROI can differ, leading to inefficiencies and inaccuracies in image quality and dose distribution.
Innovation Solution
A method and system that determine a sequence of scan states for a medical device based on image data, generating controlling information to align the isocenter with the ROI centers, allowing the device to be positioned accurately and efficiently for each scan without manual user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual positioning and alignment of isocenter with ROI centers is performed for each scan, then positioning accuracy can be controlled, but scan preparation time and user workload increase significantly
Solution Approach 1:
The system performs preliminary calculation of scan states and generation of controlling information before the actual scanning process. The processing device determines the sequence of scan states and generates controlling information in advance, so that when scanning begins, the medical device can automatically execute the pre-planned sequence without requiring manual intervention for each positioning step.
Solution Approach 2:
The medical device automatically positions itself and executes scanning based on the controlling information generated by the processing device. The system enables self-service by allowing the device to autonomously follow the predetermined sequence of scan states without requiring continuous manual adjustment or user intervention during the scanning process.
2Productivity
If automatic positioning system is implemented, then scan preparation efficiency improves, but system complexity increases
Solution Approach 1:
The processing device acts as an intermediary between the user and the medical device. It receives scanning requirements, determines the sequence of scan states, generates controlling information, and transmits it to the medical device for execution. This intermediary approach simplifies the overall system architecture by separating the complex calculation and control functions from the medical device itself.
3Manufacturing precision
If precise alignment of isocenter with ROI centers is ensured, then image quality and dose distribution improve, but positioning time for each ROI increases
Solution Approach 1:
The system calculates and determines the optimal sequence of scan states in advance based on the sequence of ROIs. By pre-determining the positioning requirements and generating controlling information beforehand, the system eliminates the need for time-consuming manual alignment calculations during the actual scanning process, thereby maintaining precision while improving scanning speed.
Data Source
AI summary
The present disclosure is related to systems and methods for medical imaging. The method includes determining a sequence of scan states of a medical device for a sequence of regions of interest (ROIs) of a subject. Each of the sequence of scan states corresponds to an ROI in the sequence of ROIs. When the medical device is in a scan state of the sequence of scan states, an isocenter of the medical device is aligned with a center of the corresponding ROI. The method includes generating a set of controlling information of the medical device based on the sequence of scan states. Each of the set of controlling information is configured to switch the medical device to a corresponding scan state in the sequence of scan states. The method includes controlling the medical device to scan the sequence of ROIs. Before scanning each of the sequence of ROIs, the medical device is positioned to the corresponding scan state according to the corresponding controlling information.