SPI 무료 덤프문제 온라인 액세스

What is the primary determining factor of the fundamental frequency for pulsed wave transducers?

• A.Crystal diameter
• B.Element thickness
• C.Propagation speed
• D.Transducer type

What parameter change reduces spectral Doppler aliasing?

• A.Utilize m-mode
• B.Increase Doppler angle
• C.Decrease pulse repetition frequency
• D.Change color scale

What does damping in a pulsed-wave transducer affect?

• A.Pulse duration
• B.Pulse repetition frequency
• C.Beam focus
• D.Beam penetration

What is the effect of an increased aperture in a linear array transducer?

• A.Deeper focus
• B.Decreased temporal resolution
• C.Improved axial resolution
• D.Shorter near-field length

What combination of transmitting frequency and depth produces the greatest ultrasound beam attenuation?

• A.5 MHz at 2 cm
• B.7.5 MHz at 5 cm
• C.7.5 MHz at 2 cm
• D.5 MHz at 5 cm