NOT a contraindication for ultrasound?

• A. Eyes
• B. Pregnancy
• C. Impaired sensation
• D. Scar tissue

Answer: (D)

Therapeutic ultrasound safety focuses on areas and conditions where applying energy could cause harm. The eyes are highly sensitive, so ultrasound is avoided there to prevent damage. Pregnancy is avoided to protect the developing fetus from any potential thermal effects. Impaired sensation means the patient can't feel overheating or adverse sensations, so treatment is not safe in that situation. Scar tissue is not a contraindication; ultrasound can be applied over scar tissue, with standard precautions and dosing adjustments as needed to ensure comfort and avoid excessive heating.