ARDMS (American Registry for Diagnostic Medical Sonography) Practice Test

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What control on the ultrasound system will enable the sonographer to adjust the position of the gate when picking up signals within the femoral vein while attempting to measure the velocity of flow within the femoral artery?

  1. Angle correction

  2. Pulse repetition frequency (PRF)

  3. Sweep speed

  4. Triplex

The correct answer is: Angle correction

In order to adjust the position of the gate when picking up signals within the femoral vein while attempting to measure the velocity of flow within the femoral artery, the sonographer would need to utilize the angle correction control on the ultrasound system. Angle correction is used to make the necessary adjustments to the angle of insonation, ensuring that the ultrasound beam is perpendicular to the flow of blood within the vessel being evaluated. This correction is crucial for obtaining accurate measurements of flow velocity as it minimizes errors caused by Doppler angle deviations. Therefore, choosing the correct option A, angle correction, enables the sonographer to appropriately adjust the gate position, leading to more accurate and reliable velocity measurements in the femoral artery.

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