کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1762684 | 1019709 | 2007 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Error analysis of ultrasonic tissue doppler velocity estimation techniques for quantification of velocity and strain
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
آکوستیک و فرا صوت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Error analysis of ultrasonic tissue doppler velocity estimation techniques for quantification of velocity and strain Error analysis of ultrasonic tissue doppler velocity estimation techniques for quantification of velocity and strain](/preview/png/1762684.png)
چکیده انگلیسی
Recent work in the field of Doppler tissue imaging has focused mainly on the quantification of results involving the use of techniques of strain and strain-rate imaging. These results are based on measuring a velocity gradient between two points, a known distance apart, in the region-of-interest. Although many recent publications have demonstrated the potential of this technique in clinical terms, the method still suffers from low repeatability. The work presented here demonstrates, through the use of a rotating phantom arrangement and a custom developed single element ultrasound system, that this is a consequence of the fundamental accuracy of the technique used to estimate the original velocities. Results are presented comparing the performance of the conventional Kasai autocorrelation velocity estimator with those obtained using time domain cross-correlation and the complex cross-correlation model based estimator. The results demonstrate that the complex cross-correlation model based technique is able to offer lower standard deviations of the velocity gradient estimations compared with the Kasai algorithm. (E-mail: mjb@ee.ed.ac.uk)
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasound in Medicine & Biology - Volume 33, Issue 1, January 2007, Pages 74-81
Journal: Ultrasound in Medicine & Biology - Volume 33, Issue 1, January 2007, Pages 74-81
نویسندگان
Michael J. Bennett, Steve McLaughlin, Tom Anderson, W. Norman McDicken,