BLOOD VESSEL DIAMETER MEASURING SYSTEM AND BLOOD VESSEL DIAMETER MEASURING METHOD

• Main Authors: TSUKAHARA SHINICHI, MATSUMOTO KOJI, KATO ATSUSHI, KOBAYASHI KENJI, ARAI TAKAMITSU
• Format: Patent
• Language: English; Japanese
• Published: 19.11.2020
• Subjects: CALCULATING; COMPUTING; COUNTING; DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; MEDICAL OR VETERINARY SCIENCE; PHYSICS; SURGERY

To accurately measure a blood vessel diameter in a subject such as a patient easily and simply by using an image captured by a vascular endoscope, and support selection of a suitable stent inserted into the subject.SOLUTION: A blood vessel diameter measuring system includes: an endoscope inserted into a blood vessel of a subject, and mounted with an image sensor capable of imaging a blood vessel at the tip side; a drive unit connected to the endoscope for driving the endoscope inserted into the blood vessel toward the base end side at a constant speed; and a calculation device connected to the drive unit for measuring a blood vessel diameter of the blood vessel based on at least one pre-movement image captured before the movement of the endoscope by the drive unit, at least one post-movement image captured after the movement of the endoscope by the drive unit, and a distance of the movement of the endoscope by the drive unit.SELECTED DRAWING: Figure 1 【課題】血管内視鏡の撮像画像を利用して患者等の被検体内の血管径を高精度で手軽かつ簡易に測定し、被検体内に挿通される適切なステントの選択を支援する。【解決手段】血管径測定システムは、被検体の血管内に挿通され、血管を撮像可能な画像センサが先端側に実装された内視鏡と、内視鏡と接続され、血管内に挿通された内視鏡を基端側に向かって一定速度で移動させる駆動機器と、駆動機器と接続され、駆動機器による内視鏡の移動前に撮像された少なくとも１枚の移動前撮像画像と駆動機器による内視鏡の移動後に撮像された少なくとも１枚の移動後撮像画像と駆動機器による内視鏡の移動距離とに基づいて、血管の血管径を測定する演算装置と、を備える。【選択図】図１