MRI Operation Terminal Role-Based Access Control
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Solution Overview
Problem
Existing magnetic resonance imaging (MRI) systems require specialized service personnel with advanced knowledge to operate, limiting the ability of general users, such as engineers, to perform appropriate operations, especially with the development of techniques reducing liquid helium usage and cooling magnets without helium.
Innovation Solution
An operation terminal equipped with a processor and recording medium that identifies user roles and permissions, allowing the system to determine the user's job type and authorize specific operations, thereby enabling general users to perform appropriate operations on the MRI system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If specialized service personnel with advanced knowledge are required to operate the MRI system, then the reliability and safety of critical operations are improved, but the ease of operation deteriorates because only a limited number of people can perform the operations
Solution Approach 1:
The patent segments user access into multiple levels (first level, second level, third level) with different operation authorities. Critical operations like safety checks and magnet excitation are restricted to higher levels, while routine operations are available to lower levels. This segmentation allows general users to perform non-critical operations independently while maintaining specialized control over critical functions, thus improving ease of operation for routine tasks while preserving reliability for critical ones.
Solution Approach 2:
The operation terminal acts as an intermediary between users and the MRI system's control functions. It provides a standardized interface that guides users through appropriate operations based on their authorization level, mediating between the user's intent and the system's critical functions. This intermediary layer enables general users to operate the system safely by filtering and managing access to critical operations through the multi-level authorization system.
2Stability of the object's composition
If the MRI system uses traditional liquid helium cooling requiring specialized personnel, then the stability of the cooling system is improved, but the adaptability deteriorates because the system cannot be operated by general users
Solution Approach 1:
The operation terminal provides universal access to the MRI system by implementing a multi-level authorization system that accommodates different user types. The same terminal interface serves both specialized service personnel and general users, adapting the available functions based on user level. This universality allows the system to maintain its stable cooling infrastructure while becoming adaptable to a broader range of users through controlled access to appropriate operations.
3Ease of operation
If all operations are available to all users, then the ease of operation is improved, but the safety deteriorates because unauthorized users may perform inappropriate operations
Solution Approach 1:
The patent applies local quality by assigning different operation authorities to different user levels based on their specific needs and training. First level users (specialized personnel) have full authority including safety checks and magnet excitation. Second level users have authority for safety checks but not magnet excitation. Third level users have only basic operational authority. This localized assignment of permissions allows ease of operation within each user's authorized scope while preventing safety risks from unauthorized critical operations.
Data Source
AI summary
An operation terminal according to an aspect of the present invention is an operation terminal for a magnetic resonance imaging apparatus and includes a processor and a non-transitory tangible recording medium. Identification information of a user of the operation terminal, information indicating a type of job of the user divided into a plurality of levels, and information indicating an operation executable by the user belonging to each type of job are recorded in the recording medium in association with one another, and the processor is configured to: determine the type of job of the user with reference to the recording medium; receive an operation executable by the user of the determined type of job; and instruct the magnetic resonance imaging apparatus to execute the received operation.