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DHA Sonographer - Reviews


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Based on 125 reviews

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See why our users from 154 countries love us for their exam prep! Including 125 reviews for the DHA Sonographer exam.

Exam Edge is an industry leader in online test prep. We work with institutional partners to offer a wide array of practice tests that will help you prepare for your big exam. No matter how niche your field of interest might be, we're here to help you prepare for test day.

   Excellent -- Based on 125 reviews

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DHA Sonographer - Test Reviews Sample Questions

A condition marked by the thickening and hardening of the arterial walls is known as which of the following?

Correct Answer:
arteriosclerosis.
*

*the correct answer to the question is arteriosclerosis. arteriosclerosis is a general term for the thickening and hardening of the arteries. this condition can occur due to various reasons, including the buildup of plaque or calcium on the arterial walls. *

*over time, arteriosclerosis can lead to significant health issues. as the arterial walls thicken and harden, they lose their natural elasticity. this loss of elasticity makes it more difficult for the arteries to accommodate the pressure and volume of blood pumped from the heart. consequently, this can lead to increased blood pressure and reduced blood flow to various parts of the body. *

*restricted blood flow can result in various complications depending on which arteries are affected. for example, if arteriosclerosis occurs in the arteries leading to the heart, it can lead to coronary artery disease, which increases the risk of a heart attack. similarly, if the arteries leading to the brain are affected, it increases the risk of stroke. *

*there are different forms of arteriosclerosis, one of which is atherosclerosis. atherosclerosis specifically refers to the buildup of fats, cholesterol, and other substances in and on the artery walls. these deposits, known as plaques, can further restrict blood flow and are a major risk factor for heart attack and stroke. *

*preventing and managing arteriosclerosis involves lifestyle changes such as maintaining a healthy diet, regular exercise, not smoking, and controlling blood pressure and cholesterol levels. in more severe cases, medical or surgical interventions might be necessary to restore adequate blood flow and prevent serious cardiovascular events. *

*therefore, understanding the difference between arteriosclerosis (the general condition of artery hardening and thickening) and atherosclerosis (a specific type of arteriosclerosis involving plaque buildup) is crucial for effective diagnosis and treatment.

Which type of artifact is a virtual image of a real object that forms behind a highly reflective interface?

Correct Answer:
mirror-image artifact.


the correct answer to the question is "mirror-image artifact."

a mirror-image artifact occurs primarily in diagnostic imaging, particularly in ultrasound imaging. this type of artifact creates a duplicate image of a real object on the opposite side of a strong reflector. the artifact appears as if there is a mirror placed at the level of the reflector, hence the term "mirror-image."

the mechanism behind the formation of a mirror-image artifact involves the ultrasound beam striking a highly reflective interface, such as the diaphragm or a large blood vessel. once the ultrasound beam hits this interface, it gets reflected back to the original structure. the ultrasound machine, interpreting the time it takes for the echo to return, incorrectly assumes that the echo has traveled twice the distance and, therefore, places a "mirror image" of the original structure on the other side of the reflector.

this artifact is particularly misleading because it can mimic pathological structures and lead to misdiagnosis. understanding the properties and common locations of these artifacts is crucial for clinicians and sonographers to correctly interpret ultrasound images and avoid diagnostic errors. the recognition of such artifacts is essential in the fields of cardiology, abdominal imaging, and any other area where highly reflective interfaces are common.