Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8130984 | Ultrasound in Medicine & Biology | 2018 | 12 Pages |
Abstract
Spectral analysis of ultrasound radiofrequency backscatter has the potential to identify intercostal blood vessels during ultrasound-guided placement of paravertebral nerve blocks and intercostal nerve blocks. Autoregressive models were used for spectral estimation, and bandwidth, autoregressive order and region-of-interest size were evaluated. Eight spectral parameters were calculated and used to create random forests. An autoregressive order of 10, bandwidth of 6âdB and region-of-interest size of 1.0âmm resulted in the minimum out-of-bag error. An additional random forest, using these chosen values, was created from 70% of the data and evaluated independently from the remaining 30% of data. The random forest achieved a predictive accuracy of 92% and Youden's index of 0.85. These results suggest that spectral analysis of ultrasound radiofrequency backscatter has the potential to identify intercostal blood vessels. (jokling@siue.edu) © 2018 World Federation for Ultrasound in Medicine and Biology
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Acoustics and Ultrasonics
Authors
Jon D. Klingensmith, Asher Haggard, Russell J. Fedewa, Beidi Qiang, Kenneth III, Sean DeGrande, D. Geoffrey Vince, Hesham Elsharkawy,