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3 years ago

HELP PLEASE!!

2 answers:

5 0

Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing. Ultrasound is not different from "normal" (audible) sound in its physical properties, except that humans cannot hear it. This limit varies from person to person and is approximately 20 kilohertz (20,000 hertz) in healthy young adults. Ultrasound devices operate with frequencies from 20 kHz up to several gigahertz. ultrasound is a safe and painless test that uses sound waves to make images of the abdomen (belly).

During the examination, an ultrasound machine sends sound waves into the abdominal area and images are recorded on a computer. The black-and-white images show the internal structures of the abdomen, such as the appendix, intestines, liver, gall bladder, pancreas, spleen, kidneys, and urinary bladder. The gel is applied to the scan area, before contacting the ultrasound probe to your Ultrasonic waves generated from the probe are reflected from the boundary of the tissue, and the probe receive reflected waves to make an ultrasound image. However, the larger the difference in acoustic characteristics between the two tissues, the stronger the reflection and the stronger the echo (white on the screen) appears. The acoustic properties (resistance) of each tissue are related to their density, which is greater in order of bone> soft tissue> fat> air. Therefore, if you apply ultrasonic probe without gel, 99.9% of ultrasonic waves are reflected at the boundary of air - soft tissue (body). Ultrasound image should show the difference between the tissues in body (normal-lesion, etc.), not the difference between the air and body.

To solve this situation, the gel is used. In other words, when the acoustic resistance of the two media is made equal by using gel, ultrasonic waves are transmitted to body without reflection.

The other purpose of the gel is the role of lubrication, which moves the probe smoothly when performing a ultrasound scan. If the gel is not used, it may be stiff and the patient may feel pain.

anyanavicka [17]3 years ago

3 0

Answer:

An ultrasound scan uses high-frequency sound waves to make an image of a person's internal body structures. Doctors commonly use ultrasound to study a developing fetus (unborn baby), a person's abdominal and pelvic organs, muscles and tendons, or their heart and blood vessels. The ultrasound sound waves have a hard time traveling through air, so the gel prevents any extra air space between the probe and your skin in order to create a clear image of the fetus.

Explanation:

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2 years ago

true or false? a healthcare disparity exists when a population group has a higher burden of disability or illness than another g

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It is true that a healthcare disparity exists when a population group has a higher burden of disability or illness than another group has.

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Health disparities are avoidable differences in the burden of disease, injury, violence, or opportunities for optimal health that socially disadvantaged populations face.

Genetics, access to care, poor quality of care, community characteristics encompassing the inadequate access to healthy foods, poverty, limited personal support systems.

Also the violence, environmental conditions like poor air quality, language barriers, and health behaviors are all factors that contribute to health disparities.

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Thus, the given statement is true.

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What pharmacological agent serves to reduce the frequency and severity of seizures?

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3 years ago

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The low-lying placenta is the condition mentioned here.

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Hence, the given analysis can be intervened as a low-lying placenta.

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10 months ago

Write a descriptive paragraph (5-7 sentences) that demonstrates your understanding of the terms cause of death, mechanism of dea

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When a person dies the medical professional needs to fill the death certificates with the cause, mechanism, and manner of death on it. There is confusion between all three terms.

The cause of death is the reason behind the death such as disease or injury that makes disruption physiologically inside the body of an individual. The mechanism of death is the derangement that arises due to the cause of death and leads to the death of the person. The third term is the manner of death is how death came (physiological reason).

An example is - a person shot by a gun in the chest (cause of death) which leads to excessive blood loss (mechanism of death) which is homicide (manner of death)

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3 years ago