How to determine the shape of the ultrasound beam in the farfield for a rectangular transducer?
Please explain your answer 8. An ultrasound pulse was transmitted from the transducer and strikes an interface and returns to the transducer. The transmitted and return time was 39 us. What is the total distance traveled? A. 5 cm. B. 4 cm C. 3 cm. D. 2 cm.
Given an ultrasound scanner with the following characteristics - 5MHz phase array transducer - 16-bit, 20 MHz AD converter - 256 MB image memory (RAM) - Operating mode: B mode acquisition; 3000 transmitted ultrasound pulses per second; image depth 10 cm; number of scan lines 60; sector angle 60º. The ultrasound velocity is 1530 m/s. (a) What is the image frequency (frame rate)? (b) How long does it take to fill the complete image memory with data? (c) How many...
An ultrasonic transducer, of the type used in medical ultrasound imaging, is a very thin disk ( m = 0.15 g ) driven back and forth in SHM at 1.0MHz by an electromagnetic coil. Part B What is the disk's maximum speed at this amplitude? vmax=?
An ultrasonic transducer, of the type used in medical ultrasound imaging, is a very thin disk ( m = 0.14g ) driven back and forth in SHM at 1.0MHz by an electromagnetic coil. Part A: The maximum restoring force that can be applied to the disk without breaking it is 3.9
An ultrasonic transducer, of the type used in medical ultrasound imaging, is a very thin disk ( m = 0.16g ) driven back and forth in SHM at 1.0MHz by an electromagnetic coil. Part A The maximum restoring force that can be applied to the disk without breaking it is 3.2
What is meant by the axial resolution of an ultrasound imaging system. What is it dependent on? A 10 MHZ transducer is employed for a medical ultrasound scan. The pulse duration is given as 0.3 micro sec. a)Sketch the shape of the pulse, indicating the number of oscillations.
X Not Correct The cantilever beam consists of a rectangular structural steel tube shape [E = 180 GPa; I = 151 x 106 mm4]. For the loading shown, determine: (a) the beam deflection VA at point A. (b) the beam deflection VB at point B. Assume P = 88 kN, Q = 29 kN, MB = 217 kN-m, w = 60 kN/m, LAB = 1.8 m, LBC = 2.6 m. P w с MB B LAB LBC Answers: X (a)...
An ultrasonic transducer, of the type used in medical ultrasound imaging, is a very thin disk ( m = 0.13 g ) driven back and forth in SHM at 1.0MHz by an electromagnetic coil. The maximum restoring force that can be applied to the disk without breaking it is 3.7×104 N . What is the maximum oscillation amplitude that won't rupture the disk? What is the disk's maximum speed at this amplitude?
Question 1 The simply supported beam consists of a rectangular structural steel tube shape [E (a) the beam deflection at point C. 204 GPa; 1-400 × 106 mm4]. For the loading shown, determine (b) the beam deflection at point E. Assume WAB = 100 kN/m, wDE = 40 kN/m, P-100 kN, MA = 285 kN-m, LAB-lge* LCD-LDE-2.6 m. AB WDE MA LBc LcD LDE AB Answers: (a) Vc (b) VE
An ultrasonic transducer of the type used in medical ultrasound imaging, is a very thin disk (m = 0.10 g) driven back and forth in SHM at 1.2 MHz by an electromagnetic coil. (a) The maximum restoring force that can be applied to the disk without breaking it is 36,000 N. What is the maximum oscillation amplitude that won't rupture the disk? (b) What is the disk's maximum speed at this amplitude? X m/s