Thyroid imagining,liver,brain tumor, Physics

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

 

Posted Date: 10/1/2012 7:28:34 AM | Location : United States







Related Discussions:- Thyroid imagining,liver,brain tumor, Assignment Help, Ask Question on Thyroid imagining,liver,brain tumor, Get Answer, Expert's Help, Thyroid imagining,liver,brain tumor Discussions

Write discussion on Thyroid imagining,liver,brain tumor
Your posts are moderated
Related Questions
If a hydrogen atom in its ground state absorbs a photon with a wavelength of 93 nm, it jumps to an excited state. What is the value of the energy in that excited state?


Faraday's law (M. Faraday): The line integral of the electric field about a closed curve is proportional to the instant time rate of change of the magnetic flux by a surface l

High temperatures and pressures are given for the following power plants. ISU co-generation:   400 psi, 750F City of Ames with RDF:   700 psi, 850F Super-critical power pl

what is absorber paper in a dry cell

What are simple ways to quantify the dryness of a semi-permeable hard surface?

1) Consider 2kg mixture of H 2 and N 2 ideal gases inside a closed piston-cylinder device at 150kPa and 100o C. This mixture has 0.4 mole fraction of H 2 . This mixture undergoes

Q. Illustrate about Optical Memories? In 1983 one of the most successful consumer products of all times was introduced which is compact disk (CD) digital audio system. This CD

Who was the first person to show that all objects fall toward Earth with constant _________.

Q. In the given circuit, calculate the current through the circuit and mention its direction. Let the current be I. 7 I + 3 I + 5I + 5 I = 10 + 8 - 2 (i.e) 20 I = 1