Brain MRI Projection Image Generation for Micro Bleed Visualization
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Solution Overview
Problem
Current methods for diagnosing dementia, particularly vascular dementia, face challenges in accurately counting micro bleeds (MBs) in three-dimensional MRI images due to overlapping issues, lack of objective criteria, and difficulty in distinguishing MBs from other brain features, leading to underestimation and overlapping of lesions in projection images.
Innovation Solution
An image processing apparatus that generates projection images of the brain by performing a minimum Intensity Projection (mIP) method within a range limited by the brain's shape, allowing for clearer visualization and identification of MBs or calcification sites without overlapping, and outputs these images with the brain surface for enhanced diagnostic clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional projection methods are used to visualize MBs in three-dimensional MRI images, then the images can be generated quickly, but the MBs overlap and cannot be accurately counted or distinguished from other brain features
Solution Approach 1:
The patent segments the three-dimensional brain image data into multiple two-dimensional slice images along the projection direction. By processing and displaying individual slices separately, the method prevents overlapping of micro bleeds that occurs in conventional projection methods, enabling accurate counting and identification of MBs while maintaining relatively simple processing procedures.
2Area of stationary object
If the entire brain volume is projected to visualize all MBs, then comprehensive coverage is achieved, but MBs overlap and diagnostic clarity is reduced
Solution Approach 1:
The patent transitions from three-dimensional volume projection to two-dimensional slice display. By presenting multiple 2D slices along the projection direction instead of a single 3D projection, the method maintains comprehensive coverage of the entire brain volume while eliminating the overlapping problem, thereby improving diagnostic accuracy and reliability.
3Productivity
If conventional projection methods are used, then processing speed is maintained, but objective criteria for MB identification are lacking leading to underestimation
Solution Approach 1:
The segmentation of 3D volume data into 2D slices provides clear visual separation of micro bleeds, enabling objective identification and counting. Each slice can be independently analyzed with established criteria, eliminating the subjectivity and underestimation problems associated with conventional projection methods while maintaining efficient processing speeds.
Data Source
AI summary
An image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to obtain three-dimensional image data of a brain acquired by performing a magnetic resonance imaging process. The processing circuitry is configured to generate a projection image rendering a micro bleed or calcification occurring in the brain by performing a projecting process on the three-dimensional image data in a range limited on the basis of a shape of the brain. The processing circuitry is configured to output the projection image.