A learning-based, region of interest-tracking algorithm for catheter detection in echocardiography. (September 2022)

• Record Type: Journal Article
• Authors: Kim, Taeouk; Hedayat, Mohammadali; Vaitkus, Veronica V.; Belohlavek, Marek; Krishnamurthy, Vinayak; Borazjani, Iman
• Is Part Of: Computerized medical imaging and graphics. Volume 100(2022)
• Publication Date: 2022-09
• Subjects: Catheter detection -- Deep learning -- Echocardiography -- Region of interest -- Tracking method; Diagnostic imaging -- Periodicals; Imaging systems in medicine -- Periodicals; Diagnosis, Radioscopic -- Data processing -- Periodicals; Diagnostic Imaging -- Periodicals; Imagerie pour le diagnostic -- Périodiques; Diagnostic imaging; Periodicals; Electronic journals; Electronic journals; 616.0754
• DOI: 10.1016/j.compmedimag.2022.102106
• Languages: English
• ISSNs: 0895-6111

Abstract

Abstract: Echocardiography (echo) is gaining popularity to guide the catheter during surgical procedures. However, it is difficult to discern the catheter tip in echo even with an acoustically active catheter. An acoustically active catheter is detected for the first time in cardiac echo images using two methods. First, a convolutional neural network (CNN) model was trained to detect the region of interest (ROI), the interior of the left ventricle, containing the catheter tip. Color intensity difference detection technique was implemented on the ROI to detect the catheter. This method succeeded in detecting the catheter without any manual input on 94% and 57% of long- and short-axis projections, respectively. Second, several tracking methods were implemented and tested. Given the manually identified initial positions of the catheter, the tracking methods could distinguish between the target (catheter tip) and the surrounding on the rest of the frames. Combining the two techniques, for the first time, resulted in an automatic, robust, and fast method for catheter detection in echo images. Highlights: Practical, robust, fast, and automated detection–tracking algorithm for a catheter. First automated workflow for catheters in 2D cardiac echo. Acoustically active catheter is utilized to improve detection. Unique combination of hardware modification (acoustic activation) and algorithmic pipeline.