Development of a palpation sensor for detection of prostatic cancer and hypertrophy (optimum structural design of sensor)

Seiji Chonan, Zhong Wei Jiang, Mami Tanaka, Takuji Kato, Masatomo Kamei, Yoshikatsu Tanahashi

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

This paper is concerned with the development of a soft palpation sensor for detection of prostatic cancer and hypertrophy. The sensor is a layered medium with two polyvinylidene fluoride (PVDF) films embedded in the matrix sponge rubber. It is pressed against the prostates and the output voltage signals from the polymer films are measured. The temporal mean values, I1 and I2, of absolute voltage signals from the films are calculated and their ratio I1/I2 is used as the sensor output. First, the fundamental characteristics of a rectangular sensor with a plane surface are examined. Then, the surface geometry of the sensor was designed so that it clearly indicates the nature on the stiffness of the soft material. Finally, a compact cylindrical sensor attached to the doctor's forefinger is described and experimental studies of its performance as a palpation sensor are presented. Some representative clinical data on the normal and hardened prostate glands are also presented palpation sensor, PVDF film, measurement of organic stiffness, prostatic cancer and hypertrophy, diagnosis.

Original languageEnglish
Pages (from-to)25-38
Number of pages14
JournalInternational Journal of Applied Electromagnetics and Mechanics
Volume9
Issue number1
Publication statusPublished - 1998 Dec 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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