ARDMS (American Registry for Diagnostic Medical Sonography) Practice Test

The main types of ultrasound modalities include 2D, 3D, Doppler, and elastography, which are all integral techniques utilized in sonography. 2D ultrasound provides a flat, two-dimensional image of the body structures, serving as the most common form of ultrasound used in medical diagnostics. It is widely used for examining organs, tissues, and the development of the fetus during pregnancy. 3D ultrasound extends the capabilities of 2D imaging by creating a three-dimensional representation of the scanned area. This is particularly useful in obstetrics, allowing for enhanced visualization of the fetus, and in some instances, offering clearer images of anatomical structures. Doppler ultrasound is crucial for assessing blood flow through vessels. It utilizes the Doppler effect to measure the change in frequency of ultrasound waves reflected off moving objects, such as red blood cells. This modality is essential in evaluating vascular conditions, cardiac function, and other hemodynamic processes. Elastography is a newer technique that evaluates the stiffness of tissues, which can be an important factor in diagnosing and monitoring various conditions, particularly liver pathology and tumors. By assessing the elasticity of tissues, elastography provides insights into pathological changes. The other options include modalities that are not types of ultrasound. For instance