Frequency-Selective Computed Tomography: Applications During Periodic Thoracic Motion

Jacob Herrmann; Eric A Hoffman; David W Kaczka

doi:10.1109/TMI.2017.2694887

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Frequency-Selective Computed Tomography: Applications During Periodic Thoracic Motion

Journal article

Open access

Peer reviewed

Frequency-Selective Computed Tomography: Applications During Periodic Thoracic Motion

Jacob Herrmann, Eric A Hoffman and David W Kaczka

IEEE transactions on medical imaging, Vol.36(8), pp.1722-1732

08/2017

DOI: 10.1109/TMI.2017.2694887

PMCID: PMC5639881

PMID: 28436852

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https://www.ncbi.nlm.nih.gov/pmc/articles/5639881View

Open Access

Abstract

We seek to use computed tomography (CT) to characterize regional lung parenchymal deformation during high-frequency and multi-frequency oscillatory ventilation. Periodic motion of thoracic structures results in artifacts of CT images obtained by standard reconstruction algorithms, especially for frequencies exceeding that of the X-ray source rotation. In this paper, we propose an acquisition and reconstruction technique for high-resolution imaging of the thorax during periodic motion. Our technique relies on phase-binning projections according to the frequency of subject motion relative to the scanner rotation, prior to volumetric reconstruction. The mathematical theory and limitations of the proposed technique are presented, and then validated in a simulated phantom as well as a living porcine subject during oscillatory ventilation. The 4-D image sequences obtained using this frequency-selective reconstruction technique yielded high-spatio-temporal resolution of the thorax during periodic motion. We conclude that the frequency-based selection of CT projections is ideal for characterizing dynamic deformations of thoracic structures that are ordinarily obscured by motion artifact using conventional reconstruction techniques.

Heart

Image resolution

image reconstruction – analytical methods

image acquisition

X-ray imaging and computed tomography

motion compensation and analysis

Image reconstruction

X-ray imaging

Standards

Motion artifacts

lung

Computed tomography

tracking (time series analysis)

Ventilation

Details

Title: Subtitle: Frequency-Selective Computed Tomography: Applications During Periodic Thoracic Motion
Creators: Jacob Herrmann - The University of Iowa, Iowa City, IA, USA
Eric A Hoffman - The University of Iowa, Iowa City, IA, USA
David W Kaczka - The University of Iowa, Iowa City, IA, USA
Resource Type: Journal article
Publication Details: IEEE transactions on medical imaging, Vol.36(8), pp.1722-1732
DOI: 10.1109/TMI.2017.2694887
PMID: 28436852
PMCID: PMC5639881
NLM abbreviation: IEEE Trans Med Imaging
ISSN: 0278-0062
eISSN: 1558-254X
Publisher: Institute of Electrical and Electronics Engineers
Grant note: PR151761 / U.S. Department of Defense (10.13039/100000005) S10OD018526; R01HL112986 / National Institutes of Health (10.13039/100000002)
Language: English
Date published: 08/2017
Academic Unit: Roy J. Carver Department of Biomedical Engineering; Radiology; Anesthesia; Internal Medicine
Record Identifier: 9984007159802771

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