Question

ultrasound involves high - frequency sound waves. sound waves can be used to image internal structures. this is the basis of
○ tomography.
○ sonography.
○ radiography.
○ fluoroscopy.

Explanation:

• Tomography: Uses various techniques (like X - ray, MRI) to create cross - sectional images, not specifically ultrasound.
• Sonography: It is the use of ultrasound (high - frequency sound waves) to produce images of internal body structures.
• Radiography: Uses X - rays to produce images, not ultrasound.
• Fluoroscopy: Uses X - rays to obtain real - time moving images, not ultrasound.

Answer:

B. sonography