Intracoronary Imaging Vessel Border Detection Using Privileged Modality Distillation

PROJECT TITLE :

Privileged Modality Distillation for Vessel Border Detection in Intracoronary Imaging

ABSTRACT:

Detecting coronary disease requires the use of intracoronary imaging, which provides a detailed view of the inside structure of coronary arteries. Computer-aided illness diagnosis will benefit from the ability to recognise vessel borders in intracoronary images (VBDI). Due to vessel-environment variability, present VDBI approaches are limited (i.e. high intra- and inter-subject diversity of vessels and their surrounding tissues appeared in images). This problem causes ineffectiveness in the representation of the vascular region for hand-crafted features, in the extraction of the receptive field for deep-represented features, and in the performance suppression resulting from clinical data limitation. In order to overcome this problem, we offer a new VBDI framework called privileged modality distillation (PMD). PMD uses the privileged image modality to assist the learning model in the target modality in transforming the SIST learning problem into a MIMT problem in the single-mode VBDI. This improves the model's adaptability to a variety of vessel environments by learning the enhanced high-level information with similar semantics and generalising PMD on diversity-increased low-level picture attributes. In addition, PMD refines MIMT to SIST by reducing the amount of previously acquired information to a single modality. There is no longer a need to use only one intracoronary modality in the testing phase because this eliminates that dependency. PMD's elaborately-designed implementation is a structure-deformable neural network. It recovers the final SIST structure after expanding a standard SIST network structure to the MIMT structure. In order to verify the PMD's accuracy, imaging techniques such as optical coherence tomography and intravascular ultrasonography were used. Due to their semantic similarity, one modality can be regarded the target, while the other can be termed the favoured modality. As demonstrated in the studies, our PMD performs better than six leading-edge VBDI approaches in VBDI (e.g. the Dice index is greater than 0.95).

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