What are the common types of non-invasive ultrasound procedures?

The selection of non-invasive ultrasound procedures encompasses methods that utilize ultrasound technology to visualize internal structures without penetrating the body. Sonohysterography involves the use of saline and ultrasound to assess the uterine cavity, providing valuable information regarding conditions such as polyps or fibroids. Elastography is a technique that measures the stiffness of tissues, which can help differentiate between benign and malignant lesions, particularly in organs such as the liver and breast. ultrasound-guided biopsies, while they do involve a needle insertion, are considered non-invasive in the sense that they utilize imaging to accurately target tissue samples while minimizing potential complications and discomfort for the patient.

Other choices do not accurately represent non-invasive ultrasound procedures. Magnetic resonance imaging, computed tomography, and PET scans are imaging techniques but are not ultrasound-based. Fluoroscopy, X-rays, and endoscopy involve either radiation exposure or the use of invasive techniques. Similarly, electrocardiograms, blood tests, and biopsies do not involve ultrasound and include either electrical monitoring or invasive sampling methods. Thus, the first set is indeed the correct example of common types of non-invasive ultrasound procedures.