Abstract
To investigate roaming paths planning for diagnosis of congenital heart diseases (CHD) using a cardiovascular virtual endoscopy (VE) system. Forty children were enrolled. VE system was applied to support in establishing a diagnosis. Performance in diagnosing CHDs by CT, VE using automatically planned roaming paths (VE-auto, objects were treated as left heart system and right heart system), VE using manually planned paths (VE-manual), and VE using automatically planned path for left heart system and manually planned path for right heart system (VE-combined) were studied and compared. Comparable accuracy of 93%, 93%, 95% and 95% was found by CT, VE-auto, VE-manual and VE-combined. However, in diagnosing tetralogy of Fallot, significantly higher performance was found by VEs, compared with CT. For VE-auto, poor performance with an accuracy of 85% and sensitivity of 22% was revealed in diagnosing muscular ventricular septal defect, compared with VE-manual and VE-combined. Compared with VE-manual, VE-combined illustrated comparable diagnostic accuracy on all CHDs; however, significantly smaller diagnostic time was utilized (P < 0.05).Cardiovascular VE system demonstrated considerable clinical value in the diagnosis of CHDs. Left and right heart system should not be modeled as two cavity objects simultaneously. When one of two systems is treated as one object, the other system should be treated as three separate objects when using VE to diagnose CHDs.
Highlights
Virtual endoscopy (VE) is an application of virtual reality technology in medicine, which is based on computer visualization and modern medical imaging technologies[1]
A cardiovascular virtual endoscopy (VE) system based on cardiac multi-detector computed tomography (MDCT) examinations was developed and applied in the diagnosis of congenital heart diseases (CHD) on 40 children
A cardiovascular VE system based on computer tomography (CT) images was developed and applied in the diagnosis of different CHDs
Summary
Virtual endoscopy (VE) is an application of virtual reality technology in medicine, which is based on computer visualization and modern medical imaging technologies[1]. It usually obtains human anatomic data via computer tomography (CT), magnetic resonance imaging (MRI), and ultrasound imaging equipment. The proper methods for roaming path planning in cardiovascular applications have rarely been researched. A cardiovascular VE system based on cardiac multi-detector computed tomography (MDCT) examinations was developed and applied in the diagnosis of congenital heart diseases (CHD) on 40 children. Three different methods for roaming path planning were designed, and the performance in diagnosing different CHDs was compared with surgical findings as proof
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