دورية أكاديمية
Frame rate required for speckle tracking echocardiography: A quantitative clinical study with open-source, vendor-independent software.
| العنوان: | Frame rate required for speckle tracking echocardiography: A quantitative clinical study with open-source, vendor-independent software. |
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| المؤلفون: | Negoita M; Imperial College London, National Heart and Lung Institute, Hammersmith Hospital Campus, London W12 0NN, UK. Electronic address: m.negoita@imperial.ac.uk., Zolgharni M; Imperial College London, National Heart and Lung Institute, Hammersmith Hospital Campus, London W12 0NN, UK., Dadkho E; Imperial College London, National Heart and Lung Institute, Hammersmith Hospital Campus, London W12 0NN, UK., Pernigo M; University of Verona, Department of Medicine, Section of Cardiology, Italy., Mielewczik M; Imperial College London, National Heart and Lung Institute, Hammersmith Hospital Campus, London W12 0NN, UK., Cole GD; Imperial College London, National Heart and Lung Institute, Hammersmith Hospital Campus, London W12 0NN, UK., Dhutia NM; Imperial College London, National Heart and Lung Institute, Hammersmith Hospital Campus, London W12 0NN, UK., Francis DP; Imperial College London, National Heart and Lung Institute, Hammersmith Hospital Campus, London W12 0NN, UK. |
| المصدر: | International journal of cardiology [Int J Cardiol] 2016 Sep 01; Vol. 218, pp. 31-36. Date of Electronic Publication: 2016 May 14. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Elsevier Country of Publication: Netherlands NLM ID: 8200291 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1874-1754 (Electronic) Linking ISSN: 01675273 NLM ISO Abbreviation: Int J Cardiol Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: Amsterdam : Elsevier Original Publication: Amsterdam : Elsevier/North-Holland Biomedical Press, c1981- |
| مواضيع طبية MeSH: | Echocardiography/*standards , Image Interpretation, Computer-Assisted/*standards , Software/*standards, Adult ; Aged ; Aged, 80 and over ; Echocardiography/methods ; Female ; Heart Rate/physiology ; Humans ; Image Interpretation, Computer-Assisted/methods ; Male ; Middle Aged ; Time Factors |
| مستخلص: | Objectives: To determine the optimal frame rate at which reliable heart walls velocities can be assessed by speckle tracking. Background: Assessing left ventricular function with speckle tracking is useful in patient diagnosis but requires a temporal resolution that can follow myocardial motion. In this study we investigated the effect of different frame rates on the accuracy of speckle tracking results, highlighting the temporal resolution where reliable results can be obtained. Material and Methods: 27 patients were scanned at two different frame rates at their resting heart rate. From all acquired loops, lower temporal resolution image sequences were generated by dropping frames, decreasing the frame rate by up to 10-fold. Results: Tissue velocities were estimated by automated speckle tracking. Above 40 frames/s the peak velocity was reliably measured. When frame rate was lower, the inter-frame interval containing the instant of highest velocity also contained lower velocities, and therefore the average velocity in that interval was an underestimate of the clinically desired instantaneous maximum velocity. Conclusions: The higher the frame rate, the more accurately maximum velocities are identified by speckle tracking, until the frame rate drops below 40 frames/s, beyond which there is little increase in peak velocity. We provide in an online supplement the vendor-independent software we used for automatic speckle-tracked velocity assessment to help others working in this field. (Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.) |
| معلومات مُعتمدة: | 281524 International ERC_ European Research Council; FS/12/12/29294 United Kingdom BHF_ British Heart Foundation; FS/14/27/30752 United Kingdom BHF_ British Heart Foundation |
| فهرسة مساهمة: | Keywords: Frame rate; Myocardial velocity; Sampling frequency; Speckle tracking; Tissue velocity imaging |
| تواريخ الأحداث: | Date Created: 20160528 Date Completed: 20170804 Latest Revision: 20220323 |
| رمز التحديث: | 20221213 |
| DOI: | 10.1016/j.ijcard.2016.05.047 |
| PMID: | 27232908 |
| قاعدة البيانات: | MEDLINE |
Full Text via ClinicalKey 
Full Text Finder | تدمد: | 1874-1754 |
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| DOI: | 10.1016/j.ijcard.2016.05.047 |