Navigation guidance for ventricular septal defect closure in heart phantoms
| Autor: | Gerardo Tibamoso-Pedraza, Sarah Amouri, Victor Molina, Iñaki Navarro, Marie-Josée Raboisson, Joaquim Miró, Chantale Lapierre, Sylvie Ratté, Luc Duong |
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| Rok vydání: | 2022 |
| Předmět: |
Heart Septal Defects
Ventricular Phantoms Imaging Biomedical Engineering Infant Health Informatics General Medicine Computer Graphics and Computer-Aided Design Computer Science Applications Treatment Outcome Humans Radiology Nuclear Medicine and imaging Surgery Computer Vision and Pattern Recognition Child Echocardiography Transesophageal |
| Zdroj: | International journal of computer assisted radiology and surgery. 17(10) |
| ISSN: | 1861-6429 |
| Popis: | Transesophageal echocardiography (TEE) is the preferred imaging modality in a hybrid procedure used to close ventricular septal defects (VSDs). However, the limited field of view of TEE hinders the maneuvering of surgical instruments inside the beating heart. This study evaluates the accuracy of a method that aims to support navigation guidance in the hybrid procedure.A cardiologist maneuvered a needle to puncture the patient's heart and to access a VSD, guided by information displayed in a virtual environment. The information displayed included a model of the patient's heart and a virtual needle that reproduced the position and orientation of the real needle in real time. The physical and the virtual worlds were calibrated with a landmark registration and an iterative closest point algorithms, using an electromagnetic measurement system (EMS). For experiments, we developed a setup that included heart phantoms representing the patient's heart.Experimental results from two pediatric cases studied suggested that the information provided for guidance was accurate enough when the landmark registration algorithm was fed with coordinates of seven points clearly identified on the surfaces of the physical and virtual hearts. Indeed, with a registration error of 2.28 mm RMS, it was possible to successfully access two VSDs (6.2 mm and 6.3 mm in diameter) in all the attempts with a needle (5 attempts) and a guidewire (7 attempts).We found that information provided in a virtual environment facilitates guidance in the hybrid procedure for VSD closure. A clear identification of anatomical details in the heart surfaces is key to the accuracy of the procedure. |
| Databáze: | OpenAIRE |
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