What is the most commonly used technique to perform B-scan ultrasound?

The handheld probe is the most commonly used technique to perform B-scan ultrasound because it provides a direct and highly interactive means for the operator to obtain real-time images of the internal structures being examined. This technique allows for manual control, enabling the operator to adjust the angle and position for optimal imaging of specific areas. Handheld probes are versatile and portable, making them suitable for various clinical settings and allowing for immediate assessment and response based on the images obtained.

In contrast, other options like transillumination devices and wide-field cameras are not standard for B-scan ultrasound, as they serve different purposes in medical imaging and do not provide the same depth of information specific to ultrasound. An automated imaging system, while it may offer efficiency and consistency, is generally less common than the straightforward and effective approach provided by handheld probes in everyday clinical practice.