Evaluating higher velocity blood flow with color Doppler requires A. Lower PRF B. Higher PRF C. Lower scale settings D. Higher scale settings E. Optimization of the ultrasound system for low-flow settings
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You are scanning a patient and you find the resolution of the image is lacking detail such that you do not feel confident that you can properly assess the patient's condition. In parts (b), circle the correct answer, b) To improve the resoultion of the image, should you change the (INTENSITY OF THE SIGNAL / FREQUENCY OF THE SIGNAL / AMPLITUDE OF THE SIGNAL / WAVE SPEED OF THE SIGNAL / THERE IS NO WAY TO IMPROVE THE RESOLUTION), It is important to remember that (HIGH FREQUENCY / LOW FREQUENCY) sound waves have shorter wavelengths and are (MORE LIKELY TO BE ABSORBED AND NOT TRAVEL AS DEEP INTO THE BODY / LESS LIKELY TO BE ABSORBED AND TRAVEL DEEPER IN THE BODY / ARE NOT ABSORBED AT ALL). Because (HIGH FREQUENCY / LOW FREQUENCY) sound waves penetrate deeper, they are best used to scan (SUPERFICIAL PARTS OF THE BODY / DEEP TISSUES IN THE BODY / ANY PART OF THE BODY). Because (HIGH FREQUENCY / LOW FREQUENCY) sound waves do not penetrate as deep, they are best used to scan (SUPERFICIAL PARTS OF THE BODY / DEEP TISSUES IN THE BODY / ANY PART OF THE BODY).
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