Development of a biomedical tissue differentiation system using piezoelectric actuators

Uribe, David Oliva; Stroop, Ralf; Hemsel, Tobias; Wallaschek, Jörg

doi:10.1109/FREQ.2008.4622963

by David Oliva Uribe, Ralf Stroop, Tobias Hemsel, Jörg Wallaschek

Abstract:

In neurosurgery, delineation of tumor boundaries during resection of brain tumors is of substantial relevance. During operation distinction between tumor and healthy tissue rely on the abilities of the surgeon based on visual and tactile differentiation. In this paper a high sensitivity actuator-sensor system using a piezoelectric bimorph is presented. Frequency shift and transfer function of the bimorphpsilas voltages are detected and evaluated. Sensorpsilas sensitivity is evaluated using two frequency controls strategies: A phase-locked loop (PLL) and a self-oscillating circuit. Results of measurements conducted on gel-phantoms are presented and discussed.

Reference:

Uribe, D. O.; Stroop, R.; Hemsel, T.; Wallaschek, J.: Development of a biomedical tissue differentiation system using piezoelectric actuators. Frequency Control Symposium, 2008 IEEE International, 2008.

Bibtex Entry:

@INPROCEEDINGS{Uribe2008,
  author = {Uribe, David Oliva and Stroop, Ralf and Hemsel, Tobias and Wallaschek,
	J{\"o}rg},
  title = {Development of a biomedical tissue differentiation system using piezoelectric
	actuators},
  booktitle = {Frequency Control Symposium, 2008 IEEE International},
  year = {2008},
  pages = {91-94},
  __markedentry = {[K. Agbons jr:6]},
  abstract = {In neurosurgery, delineation of tumor boundaries during resection
	of brain tumors is of substantial relevance. During operation distinction
	between tumor and healthy tissue rely on the abilities of the surgeon
	based on visual and tactile differentiation. In this paper a high
	sensitivity actuator-sensor system using a piezoelectric bimorph
	is presented. Frequency shift and transfer function of the bimorphpsilas
	voltages are detected and evaluated. Sensorpsilas sensitivity is
	evaluated using two frequency controls strategies: A phase-locked
	loop (PLL) and a self-oscillating circuit. Results of measurements
	conducted on gel-phantoms are presented and discussed.},
  bdsk-url-1 = {http://dx.doi.org/10.1109/FREQ.2008.4622963},
  doi = {10.1109/FREQ.2008.4622963},
  issn = {1075-6787},
  keywords = {biomedical measurement;brain;cancer;neurophysiology;phantoms;phase
	locked loops;piezoelectric actuators;surgery;tactile sensors;transfer
	functions;tumours;PLL;biomedical tissue differentiation system;brain
	tumor resection;frequency control;frequency shift;gel-phantom;high
	sensitivity actuator-sensor system;neurosurgery;phase-locked loop;piezoelectric
	actuators;piezoelectric bimorph;self-oscillating circuit;sensor sensitivity;tactile
	differentiation;tactile sensor system;transfer function;tumor boundary;visual
	differentiation;Biomedical measurements;Circuits;Frequency control;Neoplasms;Neurosurgery;Phase
	locked loops;Piezoelectric actuators;Surges;Transfer functions;Voltage},
  owner = {K. Agbons jr},
  timestamp = {2013.11.23}
}