CacheTrack-YOLO: Real-time Detection and Tracking for Thyroid Nodules and Surrounding Tissues in Ultrasound Videos.

To accurately detect and track the thyroid nodules in a video is a crucial step in the thyroid screening for identification of benign and malignant nodules in computer-aided diagnosis (CAD) system. Most existing methods just perform excellent on static frames selected by manual from ultrasound videos. However, manual acquisition is a labor-intensive work. To make the thyroid screening process in a more natural way with less labor operations, we develop a well-designed framework that is suitable to practical applications for thyroid nodule detection in ultrasound videos. Particularly, in order to make full use of the characteristics of thyroid videos, we propose a novel post-processing approach, called Cache-Track, which exploits the contextual relation among video frames to propagate the detection results into adjacent frames to refine the detection results. Additionally, our method can not only detect and count thyroid nodules, but also track and monitor surrounding tissues, which can greatly reduce the labor work and achieve computer-aided diagnosis. Experimental results exhibit our method performs better in balancing accuracy and speed.