Adaptive Nuclear Imaging Scanning Speed Control
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Solution Overview
Problem
Conventional nuclear imaging systems lack the ability to efficiently determine and control scanning ranges and speeds based on individual patient's anatomical structure and metabolic activity, resulting in suboptimal image quality and prolonged acquisition times.
Innovation Solution
The system determines specific image acquisition parameters, including scanning speeds, using anatomical information from CT scans and radiotracer distribution from nuclear imaging scans, allowing for adaptive scanning to focus on clinically relevant areas with higher quality images in reduced time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If extended exposure time is used to improve image quality, then the number of detected gamma rays increases, but the marginal benefit decreases and overall acquisition time increases
Solution Approach 1:
The patient body is divided into multiple anatomical regions of interest (ROIs) based on CT scan data and radiotracer distribution. Each ROI is scanned with customized time parameters rather than using a uniform extended exposure for the entire body, allowing optimal balance between image quality and acquisition time for each specific region.
Solution Approach 2:
Different scanning time parameters are applied to different anatomical regions based on their clinical importance and radiotracer uptake characteristics. Clinically significant areas receive longer exposure times for higher image quality, while less important areas use shorter exposure times, optimizing the overall acquisition time-quality tradeoff.
2Measurement precision
If generic acquisition protocols are used to balance image quality and acquisition time, then clinically-suitable images are produced on population average, but individual patient needs are not optimized
Solution Approach 1:
A CT scan is performed first to obtain anatomical information and identify organs and structures. This preliminary action enables subsequent customization of scanning parameters for each anatomical region based on the specific patient's anatomy and pathology, rather than using generic population-based protocols.
Solution Approach 2:
The system uses feedback from CT scan data and radiotracer distribution patterns to dynamically adjust scanning parameters for each anatomical region. The feedback loop continuously optimizes acquisition time parameters based on actual patient characteristics, achieving patient-specific optimization.
3Productivity
If fixed bed ranges and speeds are used for continuous bed motion, then acquisition time is reduced for population average, but anatomical structure and metabolic activity variations are not accounted for
Solution Approach 1:
The system dynamically adjusts bed speed and range parameters for each anatomical region based on the specific patient's anatomy, radiotracer distribution, and clinical needs. Instead of fixed population-average parameters, the scanning protocol adapts in real-time to individual patient characteristics, optimizing both speed and image quality.
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
This approach enables the acquisition of higher-quality images with greater clinical relevance while reducing overall scanning time by adjusting scanning speeds based on the classification of anatomical volumes, prioritizing suspicious or clinically important areas for slower speeds and less important areas for faster speeds.
Implementation Method 1
The radiopharmaceutical emits gamma rays (in the case of single-photon-emission-computer-tomography (SPECT) imaging)
Implementation Method 2
positrons which annihilation with electrons to produce gamma rays (in the case of positron-emission-tomography (PET) imaging)
Implementation Method 3
A detector system located outside the body detects the emitted gamma rays and reconstructs images based thereon
Data Source
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AI summary
A system and method includes identification of locations of one or more internal volumes of a body, each of the identified one or more locations associated with radioactivity greater than a threshold level, determination of a degree of interest associated with each of the one or more internal volumes based at least in part on the associated radioactivity, determination of a scanning speed associated with each of a plurality of scanning coordinates, based at least in part on the locations of the one or more internal volumes and the degree of interest associated with each of the one or more of the internal volumes, and control of the nuclear imaging scanner to scan the body based on the plurality of scanning speeds and associated scanning coordinates.