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Assignment Psychology

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Submitted By saman901
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X-RAY IMAGING SYSTEM
BRAIN SCAN: BONE SCAN: SOFT TISSUE SCAN:

CONCLUSION:
X-ray imaging system is better for bony structures as it does not get absorbed in the bones, and the area where it does not absorb is highlighted with a whitish color on the photographic film, whereas x-rays gets absorbed in soft tissues so we get a blurred image in film.

CT SCANNER
BRAIN SCAN: BONE SCAN: SOFT TISSUE SCAN:

CONCLUSION:
A computed tomography (CT) scan uses X-rays to make detailed pictures of structures inside of the body. While much information can be obtained from a standard X-ray, a lot of detail about internal organs and other structures is not available. In computed tomography, the X-ray beam moves in a circle around the body.

GAMMA CAMERA
BRAIN SCAN: BONE SCAN:

SOFT TISSUE SCAN:

CONCLUSION:
A gamma camera, also called a scintillation camera or Anger camera, is a device used to image gamma radiation emitting radioisotopes, a technique known as scintigraphy. Gamma camera gives best results for organs having more fluids.

SPECT Scanner
BRAIN SCAN: BONE SCAN: SOFT TISSUE SCAN:

CONCLUSION:
It is a technique that provides images similar to those obtained. It produce a 3-dimensional image of the body part being examined. Gives best result for organs containing more water content.

PET SCANNER
BRAIN SCAN: BONE SCAN: SOFT TISSUE SCAN:

CONCLUSION:
It is a noninvasive, painless molecular imaging technology that allows physicians to determine how organs and tissues inside the body are functioning on a molecular and cellular level. PET is best for cancer detections.
PET is the standard for evaluating candidates for bypass surgery. If a defect is present in the heart, the PET scan can determine whether or not the damage caused to the tissue can be corrected or if it is permanent. This is very important in helping the physician to decide whether or not the patient will benefit from surgery.
A PET scan can compare brain activity during periods of depression (left) with normal brain activity (right). An increase of blue and green colors, along with decreased white and yellow areas, shows decreased brain activity due to depression.
MAGNETIC RESONANCE IMAGING (MRI)
BRAIN SCAN: BONE SCAN: SOFT TISSUE SCAN:

CONCLUSION:
Magnetic resonance imaging (MRI) is the newest, and perhaps most versatile, medical imaging technology available. Doctors can get highly refined images of the body's interior without surgery, using MRI. By using strong magnets and pulses of radio waves to manipulate the natural magnetic properties in the body, this technique makes better images of organs and soft tissues than those of other scanning technologies. MRI is particularly useful for imaging the brain and spine, as well as the soft tissues of joints and the interior structure of bones. The entire body is visible to the technique, which poses few known health risks.

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