The ultrasound system relies on the ______ for accurate recording of motion clips on an echo QRS wave on the EKG R wave and T wave on the EKG System timer to be set at 3 seconds System timer to be set at 5 seconds
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A medical ultrasound imaging system sends out a steady stream of very short pulses. To simplify analysis, the reflection of one pulse should be received before the next is transmitted. If the system is being used to create an image of tissue 12 cm below the skin, what is the minimum time between pulses? How many pulses per second does this correspond to?
42. A CNC machine tool table is powered by a servo motor, connected to the motor shaft with a gear ratio of 16:16. The lead screw has a pitch of 5 mm. The optical encoder is connected directly to the lead screw and generates 200 pulses per revolution of the lead screw. The table must move a distance of 100 mm. Determine (a) pulse count received by the control system to verify that the table has moved 100 mm, (b) pulse rate, and (c) motor speed that corresponds to a feed rate of 500 mm/min. If the range of the work table axis is 500 mm and there are 12 bits in the binary register used by the digital controller to store the position, determine the control resolution.
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Step 1 Evaluate the P waves Step 2 Evaluate the atrial rhythm Step 3 Determine atrial rate Step 4 Calculate the duration of the PR interval Step 5 Evaluate the ventricular rhythm Step 6 Determine ventricular rate Step 7 Calculate the duration of the QRS complex Step 8 Calculate the duration of the QT interval
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