Synthetic Compound Eye Gamma Camera for SPECT Imaging

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Solution Overview

Problem

Conventional SPECT systems face limitations in achieving a balance between imaging resolution and sensitivity, often compromising on field-of-view, spatial resolution, and sensitivity, making it difficult to design a gamma camera optimized for all aspects simultaneously.

Innovation Solution

A synthetic compound eye gamma camera design featuring a large number of micro-camera-elements with diverse collimation apertures such as slits, rings, and pinholes, each optimized for specific imaging properties, allowing for a combination of high-resolution and high-sensitivity imaging by collectively sampling the target object.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional SPECT systems use traditional collimation methods, then the device complexity is reduced, but the sensitivity and imaging resolution deteriorate

Engineering Contradiction:
ImprovesensitivityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The gamma camera is divided into multiple independent micro-camera-elements, each with its own aperture and detector. This segmentation allows each element to be optimized for specific imaging properties while collectively achieving high sensitivity and resolution without requiring a single complex collimation system

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent transitions from traditional 2D planar collimation to a 3D synthetic compound eye structure with micro-camera-elements arranged in multiple layers and orientations. This dimensional expansion enables simultaneous optimization of sensitivity, resolution, and field-of-view through spatial diversity

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Reliability

If conventional SPECT systems optimize for high sensitivity, then the sensitivity improves, but the spatial resolution and field-of-view deteriorate

Engineering Contradiction:
ImprovesensitivityVSAvoidspatial resolution
Core Design Contradiction:
ReliabilityVSMeasurement precision

Solution Approach 1:

Different micro-camera-elements are designed with different aperture types (slits, rings, pinholes) and orientations, each optimized for specific local imaging requirements. This local optimization allows the system to achieve high spatial resolution in specific regions while maintaining overall high sensitivity across the entire field-of-view

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent combines data from multiple micro-camera-elements with diverse apertures and viewing angles through sophisticated image reconstruction algorithms. This merging of complementary information from different elements achieves both high sensitivity (through combined signal) and high spatial resolution (through angular diversity and computational processing)

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If conventional SPECT systems use a single camera design, then the device complexity is reduced, but the adaptability to different imaging applications deteriorates

Engineering Contradiction:
ImproveadaptabilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The synthetic compound eye gamma camera is designed as a universal platform with micro-camera-elements that can be configured for different imaging applications. By adjusting which elements are active and how data is reconstructed, the same physical device can optimize for cardiac imaging, brain imaging, or other applications without requiring separate specialized cameras

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 design potentially offers 10-100 times greater sensitivity than conventional SPECT systems while maintaining comparable spatial resolution, significantly enhancing SPECT imaging capabilities for applications like cardiac and brain imaging.

Implementation Method 1

Each individual micro-camera-element is equipped with an aperture structure, such as slits, rings, or pinholes, that receives gamma rays from a fractional view of a volume of interest of the target object

Methodology Applied
Scientific EffectGeometric collimation:

Implementation Method 2

sensors aligned with the plurality of micro-camera-elements for generating the plurality of 2D projections from the fractional views

Methodology Applied
Scientific EffectGamma ray detection: Photoelectric Effect

Data Source

PatentUS11269084B2Gamma camera for SPECT imaging and associated methods
Publication Date: 2022.03.08 THE BOARD OF TRUSTEES OF THE UNIV OF ILLINOIS
  • US11269084B2 patent drawing
  • US11269084B2 patent drawing
  • US11269084B2 patent drawing

AI summary

Aspects of the subject disclosure may include, for example, a device comprising: a first micro-camera-element comprising a first sensor area and a first aperture element, the first aperture element having a first structural configuration, the first aperture element and the first sensor area being disposed relative to each other in order to cooperate in obtaining first imaging data having first characteristics, and the first characteristics comprising first imaging resolution and first angular coverage; a second micro-camera-element comprising a second sensor area and a second aperture element, the second aperture element having a second structural configuration, the second aperture element and the second sensor area being disposed relative to each other in order to cooperate in obtaining second imaging data having second characteristics, the second characteristics comprising second imaging resolution and second angular coverage, and the first imaging resolution differing from the second imaging resolution, the first angular coverage differing from the second angular coverage, or any combination thereof. Additional embodiments are disclosed.