期刊
ULTRASONICS
卷 94, 期 -, 页码 235-241出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ultras.2018.09.004
关键词
Ultrasound; Duchenne muscular dystrophy; Instantaneous frequency; Time-frequency analysis; Sonography; Ultrasound frequency
资金
- Ministry of Science and Technology in Taiwan [MOST 106-2221-E-182-023-MY3, 107-2218-E-182-004]
- Chang Gung Memorial Hospital at Linkou in Taiwan [CMRPD1G0401, CMRPD1F0311]
Duchenne muscular dystrophy (DMD) results in loss of ambulation for the patients. Ultrasound attenuation correlates with fat content in muscles, resulting in changes in signal frequency. The Hilbert-Huang transform (HHT) allows time-frequency analysis with high time-frequency resolution. This study explored the feasibility of using the instantaneous frequency (IF) obtained from the HHT to diagnose the walking function of patients with DMD. Eighty-five participants (12 control and 73 patients with DMD) underwent a standard-care ultrasound examination of the gastrocnemius to acquire raw image data for ultrasound B-mode and IF calculations, which were compared with the DMD stage using Pearson correlation and receiver operating characteristic (ROC) curve analyses. With increasing DMD stage, the median IF decreased from 7.25 to 7.01 MHz (the correlation coefficient r = - 0.73; the probability value p < 0.0001). The area under the ROC curve was 0.97 when using ultrasound IF to discriminate between ambulatory and nonambulatory patients (accuracy: 91.76%; sensitivity: 93.75%; and specificity: 90.57%). The study reveals that ultrasound IF has great potential in DMD evaluation and management.
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