SPI Ultrasound Registry
SPI Ultrasound Registry New Gain with Power Reduced by Half - Answer : 15 dB Effect of Tripling Amplitude on Power - Answer : Increased Ninefold Ultrasound Attenuation Rate - Answer : 0.7 dB/cm/MHz Intensity Reflection Coefficient with ITC of 0.74 - Answer : 0.26 Definition of Acoustic Impedance - Answer : Speed of Sound in Tissue x Tissue Density Example of Rayleigh Scattering - Answer : Reflector Smaller than Wavelength Impedance Matching Result - Answer : 100% Intensity Transmission Total Attenuation of 3.5 MHz Pulse in Soft Tissue - Answer : 3.5 dB after 2 cm Relationship Between Piezoelectric Element Thickness and Frequency - Answer : Thinner Element = Higher Frequency Purpose of Decibel (dB) - Answer : Describes Ratio of Sound Intensities Range Equation Explanation - Answer : Distance to Reflector Intensity Transmission Coefficient (ITC) - Answer : 1 - Intensity Reflection Coefficient Attenuation Coefficient in Soft Tissue - Answer : Frequency/2 Attenuation Coefficient for 6MHz Ultrasound in Soft Tissue - Answer : 3 dB/cm
Written for
- Institution
- SPI ULTRASOUND REGISTRY
- Course
- SPI ULTRASOUND REGISTRY
Document information
- Uploaded on
- July 17, 2024
- Number of pages
- 11
- Written in
- 2023/2024
- Type
- Exam (elaborations)
- Contains
- Questions & answers
Subjects
- increased ninefold
- speed of sound
- trippling amplitude
- tissue desity
- impedance matching result
- intensity transmission
- rayleigh scattering
-
piezoelectric scattering
-
thickness and frequency
-
intensity refl
