What are the contraindications for using ultrasound?

Ultrasound is generally considered a very safe imaging modality, and it is widely used across various patient populations, including pregnant women. This safety stems from the fact that ultrasound uses sound waves rather than ionizing radiation, which can pose risks in other imaging techniques like X-rays or CT scans. Thus, it is not inherently contraindicated for any specific group, including those who are pregnant, as it can be safely used throughout pregnancy for monitoring fetal development and detecting potential complications.

While severe obesity can complicate the performance and interpretation of ultrasound images, it does not serve as a strict contraindication for the procedure itself. Likewise, while patient refusal is always a consideration that may prevent an ultrasound from being performed, it does not imply that the use of ultrasound itself is contraindicated for any medical reason in that scenario. Overall, ultrasound remains a versatile and safe option for various diagnostic needs, making it applicable in nearly all clinical situations.