Tomographic Reprojection for Biopsy Needle Visibility
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Solution Overview
Problem
Current radiation imaging systems face difficulties in obtaining high visibility images of both biopsy needles and objects of interest, making it challenging to confirm their positional relationship during medical procedures like biopsies.
Innovation Solution
A radiation imaging system that captures multiple projection images of a breast from different angles, generates tomographic images, reprojects these images to create a reprojection image, and synthesizes the biopsy needle image into the reprojection image for enhanced visibility and positional confirmation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional radiation imaging is used to capture biopsy needle and object of interest, then the imaging process is simple, but both the biopsy needle and object of interest cannot achieve high visibility simultaneously
Solution Approach 1:
The imaging process is segmented into multiple projection angle acquisitions, with each angle capturing specific anatomical structures. The biopsy needle visibility is optimized at certain angles while the object of interest is optimized at others, allowing both to be clearly visualized through multi-angle reconstruction
Solution Approach 2:
The imaging approach transitions from single-plane 2D imaging to multi-angle tomographic imaging, adding the angular dimension. This enables separation of overlapping structures in the third dimension, allowing both the needle and object of interest to be clearly distinguished through spatial reconstruction
2Measurement precision
If multiple projection images are captured from different angles, then the positional relationship can be confirmed, but the imaging time and processing complexity increase
Solution Approach 1:
Multiple projection images are captured in advance at different angles before biopsy execution. This preliminary multi-angle acquisition enables subsequent rapid reconstruction and positioning confirmation without requiring additional real-time imaging during the procedure
Solution Approach 2:
The system creates multiple copies of the anatomical structure from different angular perspectives. These copied views are then reconstructed to form a comprehensive spatial model, allowing accurate positional relationship determination without repeated physical re-imaging
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
Facilitates the confirmation of the positional relationship between the object of interest and the biopsy needle, improving the accuracy and efficiency of medical procedures by providing clear and enhanced imaging.
Implementation Method 1
a radiation detector configured to detect radiation
Data Source
AI summary
Disclosed are a radiation imaging system, an image processing device, a radiation imaging method, and a non-transitory computer-readable recording medium having an image processing program recorded thereon which facilitate the confirmation of a positional relationship between an object of interest and a biopsy needle. In the system using a radiation imaging device as a mammography device, when performing a biopsy of a breast of a subject, the positional relationship is confirmed using a radiation image (projection image) obtained through tomosynthesis imaging. A control unit reconstructs the projection image to generate a tomographic image in a state where the needle is inserted into the breast and generates a reprojection image at a predetermined angle from the tomographic image. The control unit extracts an image of the needle from the projection image, synthesizes the extracted image of the needle into the projection image while aligning, and displays the projection image.