Spatially varying detectability for optical tomography

Angel R. Pineda, Harrison H Barrett, Simon R. Arridge

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

3 Citations (Scopus)

Abstract

We apply task-based assessment of image quality to optical tomography imaging systems. In particular, we studied the task of detecting a signal, specified as a change in scattering and absorption coefficients, when its shape and location were known. The detectability was quantified using the optimal linear (Hotelling) observer. The non-linearity of the problem was no impediment in computing the Hotelling observer using a hybrid approach that combines knowledge of the measurement statistics with sampling to account for anatomical variation. We compared the observer performance on the raw data in uniform and structured backgrounds for several data and signal types. Two of the data types studied were the total number of photons (total counts) collected for each source-detector pair and their respective mean time of arrival. Results show that the spatial variation of detectability was different for the total counts than for the mean time. The performance of the total counts and its relative performance to the mean time varied significantly with both signal type and background variations.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages77-83
Number of pages7
Volume3977
StatePublished - 2000
EventMedical Imaging 2000: Physics of Medical Imaging - San Diego, CA, USA
Duration: Feb 13 2000Feb 15 2000

Other

OtherMedical Imaging 2000: Physics of Medical Imaging
CitySan Diego, CA, USA
Period2/13/002/15/00

Fingerprint

Optical tomography
Imaging systems
Image quality
Light sources
Photons
tomography
Statistics
Scattering
Sampling
Detectors
scattering coefficients
arrivals
absorptivity
sampling
nonlinearity
statistics
detectors
photons
Time of arrival

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Pineda, A. R., Barrett, H. H., & Arridge, S. R. (2000). Spatially varying detectability for optical tomography. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3977, pp. 77-83). Society of Photo-Optical Instrumentation Engineers.

Spatially varying detectability for optical tomography. / Pineda, Angel R.; Barrett, Harrison H; Arridge, Simon R.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3977 Society of Photo-Optical Instrumentation Engineers, 2000. p. 77-83.

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

Pineda, AR, Barrett, HH & Arridge, SR 2000, Spatially varying detectability for optical tomography. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 3977, Society of Photo-Optical Instrumentation Engineers, pp. 77-83, Medical Imaging 2000: Physics of Medical Imaging, San Diego, CA, USA, 2/13/00.
Pineda AR, Barrett HH, Arridge SR. Spatially varying detectability for optical tomography. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3977. Society of Photo-Optical Instrumentation Engineers. 2000. p. 77-83
Pineda, Angel R. ; Barrett, Harrison H ; Arridge, Simon R. / Spatially varying detectability for optical tomography. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3977 Society of Photo-Optical Instrumentation Engineers, 2000. pp. 77-83
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