A feasibility study of prostate needle biopsy supported by freehand elasticity imaging

Makoto Yamakawa, Naotaka Nitta, Tsuyoshi Shiina, Takeshi Matsumura, Satoshi Tamano, Tsuyoshi Mitake, Naoto Miyanaga, Hideyuki Akaza

研究成果: Conference article査読

2 被引用数 (Scopus)


Prostate tumor-like areas are often inconspicuous in conventional transrectal ultrasonography (TRUS). Therefore, a needle must be injected into the prostate gland in many places to obtain a biopsy. As an alternative, we propose using a tissue elasticity imaging method for needle biopsy support, based on the principle that cancerous prostate tissue becomes hard. A tissue elasticity image should reduce the number of times a needle must be injected, and decrease the probability of small cancers being overlooked. We developed the tissue elasticity imaging system for prostate glands. As a demonstration, we measured some prostate glands suspected of being cancerous. Although cancer detection is difficult using a conventional B-mode image, the strain image clearly indicates the cancerous area to be hard. A comparison of strain images with needle biopsy results revealed a 94 % agreement (15 out of 16) with histological examination in detection of cancer. We therefore concluded that the tissue elasticity imaging method is useful as a prostate needle biopsy support technology.

ジャーナルProceedings of the IEEE Ultrasonics Symposium
出版ステータスPublished - 2003
イベント2003 IEEE Ultrasonics Symposium - Proceedings - Honolulu, HI, United States
継続期間: 2003 10月 52003 10月 8

ASJC Scopus subject areas

  • 音響学および超音波学


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