Distance measuring navigation for fetoscopic laser photocoagulation to treat twin-to-twin transfusion syndrome: Feasibility evaluations

Hiromasa Yamashita, T. Yamashita, K. Masamune, H. Liao, K. Kim, T. Chiba, T. Dohi

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

This paper reports feasibility evaluations of a distance measuring navigation for fetoscopic laser photocoagulation (FLP) of placental anastmotic communicating vessels between twin fetuses to treat twin-to-twin transfusion syndrome (TTTS) in intrauterine fetal surgery. This navigation uses only a laser fiber for photocoagulation and a fiberscope for a fetoscope, which are usually used in conventional FLP, and a computer to analyzing the fetoscopic view including a laser fiber tip and a guide-spot of red diode-laser. From fiberscopic view, pixels between center of the fetoscopic circular view and center of the guide-spot irradiated from a laser fiber are automatically detected. These pixels can be converted to the real distance between fetoscope tip and target according to geometric and optical relation of a laser fiber and a fetoscope including warping correction. In distance measuring evaluation, measuring errors between the fiberscope tip and target plates were under ±1 mm around 10-mm distance from the target regardless of target angles (0-40 degrees) and colors. In conclusion, accuracy of our distance measuring navigation can provide more secure FLP in clinical use with minimum instruments.

本文言語English
ホスト出版物のタイトルWorld Congress on Medical Physics and Biomedical Engineering - Surgery, Minimal Invasive Interventions, Endoscopy and Image Guided Therapy
出版社Springer Verlag
ページ197-200
ページ数4
6
ISBN(印刷版)9783642039058
DOI
出版ステータスPublished - 2009
外部発表はい
イベントWorld Congress on Medical Physics and Biomedical Engineering - Surgery, Minimal Invasive Interventions, Endoscopy and Image Guided Therapy - Munich, Germany
継続期間: 2009 9月 72009 9月 12

出版物シリーズ

名前IFMBE Proceedings
番号6
25
ISSN(印刷版)1680-0737

Other

OtherWorld Congress on Medical Physics and Biomedical Engineering - Surgery, Minimal Invasive Interventions, Endoscopy and Image Guided Therapy
国/地域Germany
CityMunich
Period09/9/709/9/12

ASJC Scopus subject areas

  • バイオエンジニアリング
  • 生体医工学

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