Feuerstein Marco, Reichl Tobias, Vogel Jakob, Schneider Armin, Feussner Hubertus, Navabi Nassir
Computer-Aided Medical Procedures (CAMP), TUM, Munich, Germany.
Med Image Comput Comput Assist Interv. 2007;10(Pt 1):458-66. doi: 10.1007/978-3-540-75757-3_56.
In abdominal surgery, a laparoscopic ultrasound transducer is commonly used to detect lesions such as metastases. The determination and visualization of position and orientation of its flexible tip in relation to the patient or other surgical instruments can be of much help to (novice) surgeons utilizing the transducer intraoperatively. This difficult subject has recently been paid attention to by the scientific community . Electromagnetic tracking systems can be applied to track the flexible tip. However, the magnetic field can be distorted by ferromagnetic material. This paper presents a new method based on optical tracking of the laparoscope and magneto-optic tracking of the transducer, which is able to automatically detect field distortions. This is used for a smooth augmentation of the B-scan images of the transducer directly on the camera images in real time.
在腹部手术中，腹腔镜超声换能器常用于检测转移瘤等病变。确定其柔性探头相对于患者或其他手术器械的位置和方向并进行可视化，对于术中使用该换能器的（新手）外科医生会有很大帮助。这一难题最近受到了科学界的关注。电磁跟踪系统可用于跟踪柔性探头。然而，磁场会被铁磁材料扭曲。本文提出了一种基于腹腔镜光学跟踪和换能器磁光跟踪的新方法，该方法能够自动检测场畸变。这用于在相机图像上实时直接平滑增强换能器的B超图像。
