Preliminary Investigation of Short-Baseline Stereo Cameras for Motion Detection and Alignment of Pre-existing Attenuation Maps for AdaptiSPECT-C

Kesava S. Kalluri, Clifford Lindsay, Lars R. Furenlid, Michael A. King

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

AdaptiSPECT-C, a multi-pinhole, multi-detector, and stationary brain SPECT imaging system is being developed by the University of Massachusetts Medical School and the University of Arizona. During AdaptiSPECT-C acquisitions, the patient's head will be positioned entirely inside a hemi-spherical collimator assembly. A popular method to mitigate head motion during the protracted acquisitions is to use external cameras for tracking the motion of the head throughout the acquisition. This motion estimate is then used during SPECT reconstruction to compensate for the motion. Unfortunately, the close proximity of the bore to the patient will occlude the motion tracking camera's view of the patient from outside the bore, thereby posing a significant challenge to using such methods. Therefore, we propose to use small-baseline stereo depth-sensing cameras placed inside the AdaptiSPECT-C bore, to track patient's head motion. In this study, using an imaging phantom, we measure the manually generated phantom motion at a distance of about 15 cm from small baseline stereo depth sensing cameras. The motion is measured simultaneously with Optitrack motion tracking system, a commercially available marker based motion tracking system to provide a reference ground truth. Finally, we showed that at close range, we can utilize the 3D surface estimates generated by the small baseline stereo depth sensing cameras, for aligning a preexisting CT to the patient's SPECT acquisition in order to provide attenuation correction during SPECT reconstruction. Future work will include reconstruction simulations that incorporate motion correction based on actual motion data from the tested cameras as well as providing CT alignment for CT-based attenuation correction.

Original languageEnglish (US)
Title of host publication2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538684948
DOIs
StatePublished - Nov 2018
Event2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Sydney, Australia
Duration: Nov 10 2018Nov 17 2018

Publication series

Name2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings

Conference

Conference2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018
CountryAustralia
CitySydney
Period11/10/1811/17/18

Fingerprint

attenuation
cameras
alignment
Single-Photon Emission-Computed Tomography
acquisition
Head
cavities
Imaging Phantoms
ground truth
pinholes
estimates
collimators
Medical Schools
Neuroimaging
markers
brain
proximity
assembly
detectors

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Nuclear and High Energy Physics

Cite this

Kalluri, K. S., Lindsay, C., Furenlid, L. R., & King, M. A. (2018). Preliminary Investigation of Short-Baseline Stereo Cameras for Motion Detection and Alignment of Pre-existing Attenuation Maps for AdaptiSPECT-C. In 2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings [8824347] (2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2018.8824347

Preliminary Investigation of Short-Baseline Stereo Cameras for Motion Detection and Alignment of Pre-existing Attenuation Maps for AdaptiSPECT-C. / Kalluri, Kesava S.; Lindsay, Clifford; Furenlid, Lars R.; King, Michael A.

2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2018. 8824347 (2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kalluri, KS, Lindsay, C, Furenlid, LR & King, MA 2018, Preliminary Investigation of Short-Baseline Stereo Cameras for Motion Detection and Alignment of Pre-existing Attenuation Maps for AdaptiSPECT-C. in 2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings., 8824347, 2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings, Institute of Electrical and Electronics Engineers Inc., 2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018, Sydney, Australia, 11/10/18. https://doi.org/10.1109/NSSMIC.2018.8824347
Kalluri KS, Lindsay C, Furenlid LR, King MA. Preliminary Investigation of Short-Baseline Stereo Cameras for Motion Detection and Alignment of Pre-existing Attenuation Maps for AdaptiSPECT-C. In 2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2018. 8824347. (2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings). https://doi.org/10.1109/NSSMIC.2018.8824347
Kalluri, Kesava S. ; Lindsay, Clifford ; Furenlid, Lars R. ; King, Michael A. / Preliminary Investigation of Short-Baseline Stereo Cameras for Motion Detection and Alignment of Pre-existing Attenuation Maps for AdaptiSPECT-C. 2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2018. (2018 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2018 - Proceedings).
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