английский => русский Медицина Медицина: Приборы и инструменты Ultrasound systems

Elimination of ECG gated multibeat/stitching acquisition provides enhanced overview of structures and function in cases with high and/or irregular heart rhythm - which potentially reduces interventional procedure time and improves patient outcomes.

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Multi-beat acquisitions usually employ ECG-gating to temporally align image data acquired in successive cardiac cycles. If beat-to-beat variability occurs, then the quality of the multi-beat acquisition is likely to suffer. Therefore, several ECG waveforms and/or detected temporal landmarks may be employed to compare and temporally align the image data (such as the R-peak) within the multi-beat acquisition. A high variability in the waveforms or temporal landmarks would result in a lower quality score. https://patents.google.com/patent/WO2016038491A1/en

Another consideration when acquiring adequate 3D image is the possibility of acquiring confounding artifacts. During image acquisition, it is common for stitch artifacts [Figure 2] to be introduced, especially when data are acquired with the multibeat acquisition mode.[4] While the multibeat acquisition increases the frame rate, it also requires additional acquisition time. For example, when using a 4 beat acquisition, the sonographer must have the patient hold their breath for at least five cardiac cycles since it will take four cardiac cycles to stitch the data set together to obtain a complete dataset, allowing analysis to be completed during the 5th cardiac cycle [Figure 3]b. Stitch artifacts are common due to translational motion of the heart due to breathing and/or transducer movement. http://www.jiaecho.org/article.asp?issn=2543-1463;year=2017;...