Integrated optical sensors for optoacoustic imaging of tissue

P. Dmochowski, B. R. Hayes-Gill, C. Li, S. P. Morgan, M. Clark, J. A. Crowe, Michael Geoffrey Somekh

Research output: Journal article publicationConference articleAcademic researchpeer-review

Abstract

The design of a single integrated lock-in pixel with a logarithmic response for a modulated light camera is described. The sensor has been designed to detect low light levels and can detect modulated light with frequency well above 2 MHz. An n-well photodiode, amplifier, mixer and ISO Hz low-pass filter have been implemented to allow continuous processing of the incident light. The performance of the sensor is demonstrated using an optoacoustic imaging system and tissue phantoms. A 1MHz ultrasound transducer is used to modulate light scattered though a tissue phantom. An absorbing sphere is scanned through the medium and the improvement in imaging performance provided by ultrasound modulation is demonstrated.
Original languageEnglish
Article number5486-42
Pages (from-to)274-279
Number of pages6
JournalProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume5
Issue number30
DOIs
Publication statusPublished - 1 Dec 2004
Externally publishedYes
EventALT'03 International Conference on Advanced Laser Technologies: Biomedical Optics - Silsoe, United Kingdom
Duration: 19 Sep 200323 Sep 2003

ASJC Scopus subject areas

  • Engineering(all)

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