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Paper Information

Journal:   DANESHVAR MEDICINE   October-November 2002 , Volume 10 , Number 41 (Special Edition on Medical Sciences Articles); Page(s) 51 To 56.
 
Paper: 

MEASUREMENT AND COMPARISON OF ULTRASOUND VELOCITY AS A FUNCTION OF TEMPERATURE IN NORMAL BREAST TISSUE AND TUMORS

 
 
Author(s):  MOKHTARI DIZAJI M., VAHED M.R., GITI M.
 
* 
 
Abstract: 

Ultrasound propagation velocity was measured experimentally in normal, benign and malignant breast tissues at various temperatures from 20 through 35°C, in order to distinguish tumors from normal breast tissue. In quantitative measurements of ultrasound velocity, 57 breast tissue specimens were selected, comprising 17 normal breast tissues, 20 benigns, and 20 malignant tumors. The cases were implanted in breast tissue mimicking materials and ultrasonic images (A-mode) at 20, 25, 30 and 35°C were processed and evaluated. It was observed that ultrasound propagation velocity in various temperatures is an important factor to distinguish in vitro specimens of benign and malignant from normal tissue (P-value<0.005). However, ultrasound velocities in malignant and benign tumors were very similar with almost complete overlap in all the temperatures. Evaluation of ultrasound velocities in all the temperatures showed that in normal breast tissue, benign and malignant tumors, ultrasound velocity increases with temperature linearly. In 20?C, ultrasound velocities in benign and malignant specimens were differentiated slightly. Therefore, the results show the measurement of ultrasound velocities in normal breast tissue and malignant and benign tumors can be used in differentiation of tissues.

 
Keyword(s): ULTRASONIC TISSUE CHARACTERIZATION, ULTRASONIC IMAGING, VELOCITY, BREAST CANCER DIAGNOSIS
 
References: 
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