Certified Ophthalmic Technician (COT) Practice Test 2025 - Free COT Practice Questions and Study Guide

Question: 1 / 400

In a B-scan exam, which parameter is least likely to be modified during a routine procedure?

Lens type used

Patient positioning

Sound intensity

In a B-scan ultrasound examination, sound intensity is typically kept at a consistent level, as it is crucial for ensuring accurate imaging of the structures within the eye. The intensity of the sound waves is adjusted and calibrated prior to the procedure to provide clear, high-quality images, but during a routine exam, this parameter usually remains unchanged.

Conversely, the lens type used in the probe can vary depending on the specific requirements of the exam or the preferences of the practitioner. Patient positioning may also be adjusted to optimize the approach for obtaining the best possible images. Additionally, the angle of the ultrasound beam might be modified in real-time to capture different views or specific areas of interest in the eye. All these factors can change based on the individual case, while sound intensity is generally standardized for most exams.

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Angle of ultrasound beam

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