Speckle Tracking Accuracy Enhancement by Temporal Super‑Resolution of Three‑Dimensional Echocardiography Images
سال انتشار: 1400
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 87
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شناسه ملی سند علمی:
JR_JMSI-11-3_003
تاریخ نمایه سازی: 28 تیر 1402
چکیده مقاله:
Background: Speckle tracking has always been a challenging issue in echocardiography
images due to the lowcontrast and noisy nature of ultrasonic imaging modality. While
in ultrasound imaging, framerate is limited by image size and sound speed in tissue,
speckle tracking results get worse inthree‑dimensional imaging due to its lower frame
rate. Therefore, numerous techniques have beenreported to overcome this limitation and
enhance tracking accuracy. Methods: In this work, we have proposedto increase the frame
rate temporally for a sequence of three‑dimensional (۳D) echocardiographyframes to
make tracking more accurate. To increase the number of frames, cubic B‑spline is usedto
interpolate between intensity variation time curves extracted from every single voxel
in theimage during the cardiac cycle. We have shown that the frame rate increase will
result in trackingaccuracy improvement. Results: To prove the efficiency of the proposed
method, numerical evaluation metricsfor tracking are reported to make a comparison
between high temporal resolution sequences andlow temporal resolution sequences.
Anatomical affine optical flow is selected as the state‑of‑the‑artspeckle tracking method,
and a ۳D echocardiography dataset is used to evaluate the proposedmethod. Conclusion:
Results show that it is beneficial for speckle tracking to perform on temporally
condensedframes rather than ordinary clinical ۳D echocardiography images. Normalized
mean enhancementvalues for mean absolute error, Hausdorff distance, and Dice index for
all cases and all frames are۰.۴۴ ± ۰.۰۹, ۰.۴۲± ۰.۰۹, and ۰.۳۶ ± ۰.۰۶, respectively.
کلیدواژه ها:
نویسندگان
Mohammad Jalali
Department of Biomedical Engineering, Iran University of Science and Technology, Tehran, Iran
Hamid Behnam
Department of Biomedical Engineering, Iran University of Science and Technology, Tehran, Iran