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7 April 2023Automated right coronary artery localizer using deep learning for optimal cardiac phase selection

Chih-Chieh Liu,Qiulin Tang,Liang Cai,Zhou Yu, Jian Zhou

Chih-Chieh Liu,¹ Qiulin Tang,¹ Liang Cai,¹ Zhou Yu,¹ Jian Zhou¹

¹Canon Medical Research USA, Inc. (United States)

Proceedings Volume 12465, Medical Imaging 2023: Computer-Aided Diagnosis; 124650T (2023)https://doi.org/10.1117/12.2655286
Event:SPIE Medical Imaging, 2023, San Diego, California, United States

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Abstract

Coronary computed tomography angiography (CCTA) is a major clinical imaging technique used to diagnose cardiovascular diseases. To improve diagnostic accuracy, it is necessary to determine the most optimal reconstruction phase that has the best image quality with little or no motion artifacts. The end-systolic phase and end-diastolic phase are the two commonly used phases for image reconstruction, but they are not always optimal in terms of motion-based image quality. In this paper we propose a deep learning method to automatically select an optimal phase based on a set of 2D axial phase image reconstructions. We select the right coronary artery (RCA) as our main vessel of interest to analyze reconstruction quality. Two deep convolutional neural networks are developed to perform efficient heart region segmentation and RCA localization without manually performing patient-specific image segmentation. We also demonstrate how to calculate image entropy as a figure of merit to evaluate RCA reconstruction quality. Results based on real clinical data with a heart rate of 74 beats per minute (bpm) have shown our proposed algorithm can efficiently localize the RCA for arbitrary cardiac phase, and accurately determine the optimal RCA reconstruction with minimal motion artifacts.

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Chih-Chieh Liu,Qiulin Tang,Liang Cai,Zhou Yu, andJian Zhou"Automated right coronary artery localizer using deep learning for optimal cardiac phase selection", Proc. SPIE 12465, Medical Imaging 2023: Computer-Aided Diagnosis, 124650T (7 April 2023);https://doi.org/10.1117/12.2655286

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