Frequency bands for ultrasound | 合法醫療器材資訊網

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Ultrasound frequencies in diagnostic radiology range from 2 MHz to approximately 15 MHz. It is important to remember that higher frequencies of ultrasound ... Read More

由 VS Lucas 著作 · 2014 · 被引用 26 次 — Ultrasound waves have varying frequencies. Frequency is the number of vibration cycles that occur in 1 s. Lower frequencies have larger wavelengths, and higher ... Read More

由 KK Shung 著作 · 2009 · 被引用 106 次 — Commercial high frequency scanners often termed “ultrasonic biomicroscope”, or UBM, all use mechanically scanned single element transducers at frequencies ... Read More

Ultrasound is defined by the American National Standards Institute as sound at frequencies greater than 20 kHz. In air at atmospheric pressure, ultrasonic ... Read More

由 F Duck 著作 · 2018 · 被引用 8 次 — It is recommended that the ultrasonic spectrum be divided into three frequency bands to facilitate considerations of health effects. These should be US(A) 17.8 ... Read More

由 PH Tsui 著作 · 2017 · 被引用 19 次 — Effect of ultrasound frequency on the Nakagami statistics of human liver tissues. PLoS One. 2017 Aug 1;12(8):e0181789. doi: 10.1371/journal.pone.0181789. Read More

由 K Shung 著作 · 2009 · 被引用 26 次 — High frequency linear arrays and linear array based ultrasonic imaging systems at frequencies higher than 30 MHz are being developed. The engineering of such ... Read More