ARDMS SPI Exam With Confidence Using Practice Dumps

The Mechanical Index (MI) is related to the likelihood of cavitation, which is the formation of gas bubbles in a liquid due to the low-pressure regions of the ultrasound wave. MI is a parameter that predicts the potential for mechanical bioeffects, including cavitation. A higher MI indicates a greater likelihood of cavitation occurring. It is calculated based on the peak negative pressure and the frequency of the ultrasound wave.

ARDMS Sonography Principles and Instrumentation guidelines

Kremkau, F. W. (2015). Diagnostic Ultrasound: Principles and Instruments.

Edge enhancement is a processing technique used in ultrasound imaging to improve the visibility of the edges of structures.

In image A, the borders of the cystic lesion might appear less defined due to a lack of edge enhancement.

By turning on edge enhancement, the ultrasound system processes the image to accentuate the boundaries, leading to a clearer and more distinct outline of the cystic lesion as seen in image B.

This adjustment reduces the artifact within the cystic lesion by emphasizing the differences in the adjacent tissue interfaces, thus improving the overall image quality.References:

American Registry for Diagnostic Medical Sonography (ARDMS) Sonography Principles and Instrumentation guidelines on image optimization techniques.

The ALARA principle stands for "As Low As Reasonably Achievable" and aims to minimize patient exposure to ultrasound energy. Decreasing the output power reduces the intensity of the ultrasound waves, thereby reducing the potential for tissue heating and mechanical effects, which aligns with the ALARA principle of minimizing exposure while still obtaining necessary diagnostic information.

ARDMS Sonography Principles and Instrumentation guidelines

Hangiandreou, N. J. (2003). "Physics Tutorial for Residents: Topics in US: B-Mode US: Basic Concepts and New Technology." Radiographics.