All categories

2 years ago

Before performing an mri, why must technicians ask patients if they have any steel inside their body?

2 answers:

7 0

The technicians ask the patients if they have any steel inside their body because the steel when subjected to a magnetic field they will become a magnet. since MRI produces a very large amount of magnetic field during its operation, then the still will be a magnet and it might hurt you

strojnjashka [21]2 years ago

3 0

During MRI scan strong magnetic fields are used. The presence of any metallic object during the scan would magnetize itself and will be pulled towards the magnet with a force that is harmful to the human skin.

Further Explanation:

A process that brings about detailed images of the tissues and organs of the body without using X-rays is called magnetic resonance imaging or MRI. Instead of X-rays, it uses a magnetic field in order to produce radio waves for creating high-quality images. These clear images can be used in the determination of an injury in the internal parts of the body.

The procedure of the scan is conducted through an MRI machine that is donut-shaped. The patient lies facing upwards and moves into the machine from one end. As the machine is switched on, the magnetic field is generated which aligns the protons from the human body. The radio waves thus formed causes the protons to create electric signals that are received by the machine in order to form a clear image of the internal organs or tissues.

The high-power magnets inside the MRI machine do most of its work. Due to high magnetic fields, it is important to be cautious inside the scan room. Before undergoing an MRI, the technician might ask a person whether he/she has steel or metal inserted inside the body. This is because the strong magnetic fields might magnetize the metallic object. A material susceptible to magnetization can easily accept a magnetic field. Therefore, while entering a scan room, anything which might get magnetized must be removed. The magnet may pull the metallic object towards itself with such a force that the metal may break open the weak surfaces in order to make its way towards the magnet. In a case where the metallic object is present inside the human body, the pulling of the object in the presence of a magnetic field might rip off the skin and result in a wound. Therefore, it is generally asked beforehand to a person about any metallic insertion in the body so as to avoid such circumstances.

Learn More:

1. Learn more about the treatment of eukaryotic cell with a drug brainly.com/question/10767798

2. Learn more about the proteins synthesis in a cell brainly.com/question/1420458

3. Learn more about the exchange of gases by blood cells brainly.com/question/1213217

Answer Details:

Grade: High School

Chapter: Magnetic Resonance Imaging

Subject: Biology

Keywords:

Magnetic Resonance Imaging, MRI, magnetic field, magnetization, protons, radio waves, electric signals, high-quality image, internal organs.

You might be interested in

In general the surface of a tree has a harder feel than does the surface of a dog. What cell characteristic of each organism can

Alik [6]

This is because plants has cell wall while dog doesnt have. A cell wall is a structural layer surrounding some types of cells, situated outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism.

4 0

2 years ago

In the Gizmo, what light intensity and CO2 level do you think will maximize the rate of photosynthesis?Experiment: Use the Gizmo

adoni [48]

Solution :

In Gizmo experiment, when both the intensity of light and carbon dioxide level is high, the rate of photosynthesis will maximize.

A). If the temperature is too hot or cold, it becomes difficult to find the ideal intensity of light because if the temperature is hot, the light intensity will be too high and thus the chlorophyll will get damaged. While if it too low, then it will be difficult for the proper functioning of the cells. And hence the photosynthesis will not take place.

B). It will be considered as a limiting factor if the light intensity is low. With light intensity being low, it will be difficult for the plant for survival and ideal carbon dioxide level will have no role. This amount of carbon dioxide does not help the plant to survive as the light intensity is now a rate limiting factor.

6 0

2 years ago

Read 2 more answers

The ability of one or more organisms in a population to tolerate a chemical such as a pesticide or antibiotic designed to kill i

Aleksandr [31]

Answer:

The correct answer is- Resistance

Explanation:

The ability of any organism in a population to tolerate a chemical like insecticide, pesticide or antibiotic which is designed to kill it or slow its reproduction is called resistance.

For example, the antibiotic resistance is seen in some bacteria like MRSA(Methicillin-resistant staphylococcus aureus). They gain this resistance because they have some variant traits in their genome which provide them resistance against these chemicals.

These individual are selected through natural selection when the environmental condition changes and become adverse. So the correct answer is resistance.

5 0

2 years ago

The trophic structure of a community concerns the ________ relationships among the various species making up the community. comp

Firdavs [7]

The answer would be the interaction strengths of the relationships in the structure of the trophic community.

A major role of all trophic interactions in community stability are the interaction strengths. All species depend on one another. Some of these interactions are the population sizes and energy flow rates of each species as a whole or the biomass.

3 0

2 years ago

What determines the shape of a crystal??

Luden [163]

A crystals shape is determined by the arrangement of the atoms or molecules inside the crystal.

5 0

2 years ago

Read 2 more answers