Angled Ramp Phantom for 3D Tomographic Imaging Evaluation
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Solution Overview
Problem
Current tomographic imaging devices lack phantoms that can accurately evaluate the radial and 3-dimensional extent of images, requiring multiple tests and lacking visual and mathematical analysis capabilities for x, y, and z-axis properties simultaneously.
Innovation Solution
A test object with a plurality of angled ramps configured to produce a uniform waveform profile across a tomographic slice image, allowing for the evaluation of spatial performance by analyzing the waveform profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional phantoms are used for evaluation, then local in-plane and z-axis information can be obtained, but radial and 3-dimensional extent evaluation is insufficient
Solution Approach 1:
The test object integrates multiple evaluation functions into a single phantom: it simultaneously enables assessment of in-plane resolution, slice thickness, radial extent, and 3-dimensional imaging accuracy through its multi-component structure including angled ramps, cylindrical structures, and planar features
Solution Approach 2:
The invention transitions from 2D in-plane evaluation to 3D volumetric evaluation by incorporating angled ramps and cylindrical structures that extend in multiple spatial dimensions, allowing assessment of radial and depth information simultaneously with in-plane resolution
2Measurement precision
If multiple module tests are used to evaluate different image properties, then comprehensive evaluation is achieved, but testing complexity and time increase
Solution Approach 1:
The invention merges multiple evaluation functions into a single integrated test object that can assess in-plane resolution, slice thickness, radial extent, and 3D imaging accuracy simultaneously in one scan, eliminating the need for separate module tests for each parameter
3Measurement precision
If phantoms provide enhanced evaluative value with greater accuracy, then imaging integrity assessment improves, but phantom complexity increases
Solution Approach 1:
The test object is segmented into distinct functional components (angled ramps for resolution assessment, cylindrical structures for radial evaluation, planar features for slice thickness measurement) that can be independently designed and manufactured, then assembled into an integrated phantom
Data Source
AI summary
Method and apparatus are provided for use with a tomographic imaging device. A test object comprising a plurality of angled ramps may be provided to facilitate evaluating performance of the tomographic imaging device. A method for evaluating performance of a tomographic imaging device includes scanning the test object to produce a tomographic slice image and performing analysis on a waveform profile extracted from the image, to determine spatial performance of the tomographic imaging device. A tomographic imaging device may be provided comprising a scanning device and a data processing unit for performing a method of evaluating performance of the tomographic imaging device.