Development of a Palpation Sensor for Detecting Prostatic Cancer and Hypertrophy (Signal Processing on Clinical Data)

Mami Tanaka, Masatomo Kamei, Mitsuyuki Furubayashi, Zhong Wei Jiang, Yoshikatu Tanahashi, Seiji Chonan

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


This paper is concerned with the development of a palpation sensor for possible detection of prostatic cancer and hypertrophy. The sensor is a layered medium with two polyvinylidene fluoride (PVDF) films embedded in the matrix sponge rubber. This sensor fixed with a finger is pressed against the prostates and the output voltage signals from the polymer films are measured. The temporal mean values, I1 and I2, on the absolute signals from polymer films are calculated and their ratio I1/I2 is used as the sensor output. First, the experimental method for the clinical test is proposed. The prostate glands diagnosed by a doctor's fore finger are classified into four groups according to their stiffness and the data processing for assorting the glands into the groupes are presented. The effect of the convexes placed on the surface of sensor is examined by conparing the clinical data with that of the sensor without the convexes.

Original languageEnglish
Pages (from-to)3296-3301
Number of pages6
JournalNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Issue number636
Publication statusPublished - 1999
Externally publishedYes


  • Clinical Test
  • Measurement of Organic Stiffness
  • PVDF film
  • Palpation Sensor
  • Prostatic Cancer and Hypertrophy

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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