Evaluation of ultrasound techniques for brain injury detection

Joel Mobley; Paul M. Kasili; Stephen J. Norton; Tuan Vo-Dinh

doi:10.1117/12.308021

1 May 1998 Evaluation of ultrasound techniques for brain injury detection

Joel Mobley, Paul M. Kasili, Stephen J. Norton, Tuan Vo-Dinh

Proceedings Volume 3253, Biomedical Sensing and Imaging Technologies; (1998) https://doi.org/10.1117/12.308021
Event: BiOS '98 International Biomedical Optics Symposium, 1998, San Jose, CA, United States

Abstract

In this work, we examine the physics underlying wave propagation in the head to evaluate various ultrasonic transducers for use in a brian injury detection device. The results of measurements of the attenuation coefficient and phase velocity for ultrasonic propagation in samples of brain tissue and skull bone from sheep are presented. The material properties are then used to investigate the propagation of ultrasonic pressure fields in the head. The ultrasound fields for three different transducers are calculated for propagation in a simulated brain/skull model. The model is constructed using speed-of-sound and mass density values of the two tissue types. The impact of the attenuation on the ultrasound fields is then examined. Finally, the relevant points drawn from these discussions are summarized. We hope to minimize the confounding effects of the skull by using sub-MHz ultrasound while maintaining the necessary temporal and spatial resolution to successfully detect injury in the brain.

Citation Download Citation

Joel Mobley, Paul M. Kasili, Stephen J. Norton, and Tuan Vo-Dinh "Evaluation of ultrasound techniques for brain injury detection", Proc. SPIE 3253, Biomedical Sensing and Imaging Technologies, (1 May 1998); https://doi.org/10.1117/12.308021

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