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Related Experiment Video

Updated: Jul 13, 2026

Array Tomography Workflow for the Targeted Acquisition of Volume Information using Scanning Electron Microscopy

Array Tomography Workflow for the Targeted Acquisition of Volume Information using Scanning Electron Microscopy

Published on: July 15, 2021

Inverse-geometry volumetric CT system with multiple detector arrays for wide field-of-view imaging.

Samuel R Mazin¹, Josh Star-Lack, N Robert Bennett

¹Department of Electrical Engineering, Stanford University, Stanford, California 94305, USA. smazin@stanford.edu

Medical Physics

|July 28, 2007

Summary

Inverse-geometry CT (IGCT) imaging can now achieve a 45 cm field of view with isotropic resolution. This novel approach uses multiple detector arrays to overcome limitations of traditional CT systems.

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Four-Dimensional CT Analysis Using Sequential 3D-3D Registration

Four-Dimensional CT Analysis Using Sequential 3D-3D Registration

Published on: November 23, 2019

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Last Updated: Jul 13, 2026

Array Tomography Workflow for the Targeted Acquisition of Volume Information using Scanning Electron Microscopy

Array Tomography Workflow for the Targeted Acquisition of Volume Information using Scanning Electron Microscopy

Published on: July 15, 2021

Four-Dimensional CT Analysis Using Sequential 3D-3D Registration

Four-Dimensional CT Analysis Using Sequential 3D-3D Registration

Published on: November 23, 2019

Area of Science:

Medical Imaging
Computed Tomography
Inverse-Geometry CT (IGCT)

Background:

Conventional volumetric CT requires seconds for thick volume acquisition (>8 cm) at high resolution.
Inverse-geometry CT (IGCT) offers potential for single-rotation, isotropic resolution imaging without cone-beam artifacts.
IGCT's field of view (FOV) is typically limited by the source array size.

Purpose of the Study:

To enhance the in-plane FOV in IGCT systems without increasing source array size.
To investigate the use of additional, laterally spaced detector arrays to expand FOV.
To optimize detector placement for maximal FOV and uniform sampling.

Main Methods:

Proposed a novel IGCT configuration with multiple, laterally spaced detector arrays.
Determined optimal detector placement through simulations to maximize FOV and sampling uniformity.
Designed and simulated a pre-patient collimator to minimize radiation waste.
Reconstructed images from simulated projection data and scanned a physical phantom.

Main Results:

Simulations demonstrated that additional detector arrays effectively increase the in-plane FOV.
Reconstructions from simulated data showed no artifacts when combining data from multiple detectors.
A prototype system achieved a 45 cm in-plane FOV with a 23 cm source array.
The system design minimizes wasted radiation.

Conclusions:

The proposed multi-detector array IGCT system significantly expands the achievable FOV.
This approach overcomes FOV limitations of IGCT while maintaining isotropic resolution and artifact-free imaging.
The technology demonstrates feasibility for advanced medical imaging applications.