Final answer:
Agitated saline contrast will aid in visualization of the endocardium by creating microbubbles that enhance the echogenicity within the blood pool, providing clearer imaging of the endocardial borders during an echocardiogram.
Step-by-step explanation:
The question asks which method will aid in the visualization of the endocardium during an ultrasound. The correct answer is agitated saline contrast. When saline is agitated with air, it creates microbubbles which increase the echogenicity within the blood pool; this provides better visualization of the endocardial borders during an echocardiogram. The increase in transducer frequency (Increased transducer frequency), while it improves the resolution, is better for looking at superficial structures rather than deeper structures such as the endocardium. Larger sector size and increased wall filter settings do not directly improve endocardial visualization.
Answer: D) Agitated saline contrast