Design of a Modular SPECT Camera with Improved Spatial Resolution near Edges

Xin Li, George Zubal, Michael A. King, Lars R Furenlid

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

Abstract

We are designing a modular SPECT camera for specialized imaging applications. We proposed to use NaI(Tl) as our scintillation crystal whose shape is hexagonal with \sim 100 mm side lengths and > 5 mm thickness. Our target average spatial resolution is \sim 1.5 mm (FWHM) which corresponds to a\sigma (RMSE) of 0.45 mm. We propose putting SiPMs on the edges to help improve the spatial resolution. Our preliminary simulation result shows that with 8 mm crystal thickness, 6 mm light guide, and 37 close-packed photomultiplier tubes (1.0'' diameter), the root mean squared error (RMSE) across the detector plane is 2.84 mm, due to the very high bias and variance in regions close to the edges; By attaching 4 SiPMs on each edge, the RMSE is improved to 1.34 mm; If the SiPMs' window material and coupling medium's refractive index is increased to 1.82, the RMSE is improved to 1.00 mm. We are still optimizing the detector design by tuning the parameters such as thickness of crystal, thickness of light guide, positions of SiPMs on the edges and number of PMTs to achieve the target spatial resolution without a significant trade-off on the detection sensitivity.

Original languageEnglish (US)
Title of host publication2017 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2017 - Conference Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538622827
DOIs
StatePublished - Nov 12 2018
Event2017 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2017 - Atlanta, United States
Duration: Oct 21 2017Oct 28 2017

Other

Other2017 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2017
CountryUnited States
CityAtlanta
Period10/21/1710/28/17

Fingerprint

Single-Photon Emission-Computed Tomography
spatial resolution
Cameras
cameras
Light
Refractometry
Crystals
crystals
Detectors
Photomultipliers
detectors
Scintillation
photomultiplier tubes
Full width at half maximum
scintillation
Refractive index
Tuning
tuning
refractivity
Imaging techniques

ASJC Scopus subject areas

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

Cite this

Li, X., Zubal, G., King, M. A., & Furenlid, L. R. (2018). Design of a Modular SPECT Camera with Improved Spatial Resolution near Edges. In 2017 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2017 - Conference Proceedings [8532742] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2017.8532742

Design of a Modular SPECT Camera with Improved Spatial Resolution near Edges. / Li, Xin; Zubal, George; King, Michael A.; Furenlid, Lars R.

2017 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2017 - Conference Proceedings. Institute of Electrical and Electronics Engineers Inc., 2018. 8532742.

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

Li, X, Zubal, G, King, MA & Furenlid, LR 2018, Design of a Modular SPECT Camera with Improved Spatial Resolution near Edges. in 2017 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2017 - Conference Proceedings., 8532742, Institute of Electrical and Electronics Engineers Inc., 2017 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2017, Atlanta, United States, 10/21/17. https://doi.org/10.1109/NSSMIC.2017.8532742
Li X, Zubal G, King MA, Furenlid LR. Design of a Modular SPECT Camera with Improved Spatial Resolution near Edges. In 2017 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2017 - Conference Proceedings. Institute of Electrical and Electronics Engineers Inc. 2018. 8532742 https://doi.org/10.1109/NSSMIC.2017.8532742
Li, Xin ; Zubal, George ; King, Michael A. ; Furenlid, Lars R. / Design of a Modular SPECT Camera with Improved Spatial Resolution near Edges. 2017 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2017 - Conference Proceedings. Institute of Electrical and Electronics Engineers Inc., 2018.
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