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Physical principle of nuclear medicine imagining:Since the gamma camera obtain the image in less time, it is usually preferred over the rectilinear scanner
Thyroid imagining:
-About 4MBq of 131I is given orally the body the day before scan, or we can use 99mTcO4 which is taken by the same tissues that take up iodine.-Tc is preferred since it gives a much smaller radiation dose to the patient.-123I it lack of beta emission is also used
Liver:- Normal liver tissue will filter radioactive submicroscopic particles from the blood ,while the tumor in the liver will not and appear on the scan as an area of reduced radioactivity.- For liver scan ,200 Mq of 99m Tc –labeled sulfur colloid with particles about 0.5 µm in diameter is injected into a vein and image is obtained after 10 min.
Brain Tumor:- When injected into the blood ,different radioactive material are taken up bitterly by brain tumors than by surrounding normal brain tissue.- About 500MBq of 99mTc is given ,after 2 hour four gamma camera images (the front ,back ,left and right sides of head) are taken
Monochromatic light (single wavelength) falls on two narrow slits S1 and S2 which are very close together acts as two coherent sources, when waves coming from two coherent sources
ratio of specific heats of polyatomic gas
Atoms are particles of elements, substances that could not break down further. In examining atomic structure through, we have to clarify this statement. An atom cannot be broken do
The government uses monetary and fiscal policy to mitigate the effects of economic fluctuations
A certain machine exerts a force of 200 Newton on a box whose masses 30 kilograms. The machine moves the box a distance of 20 meters with a horizontal floor. What amount o
How do we measure the height of a house
Give reason that ultrasonics not be produced by passing high frequency alternating current by a loud speaker At these high frequencies, inductive reactance is so high where is
examples of liked paralled forces
Q. Find the shell temperature? In a shell-and-tube heat exchanger, one fluid passes through a central tube while another fluid flows through an outer shell in the opposite dire
Light propagates as transverse EM rays. The magnitude of electric field is much larger as compared to magnitude of magnetic field. We generally prefer to define light as electric f
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