What Factors Influence Signal Intensity in MRI?

~JAZZY_JAZ~
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Homework Statement



I am posting on this forum to find a certain queation that has been given to me as an assignment.
the question reads: EXPLAIN THE FACTORS INFLUENCING SIGNAL INTENSITY IN MRI.

this is A - Level question so please keep it simple as possible.

The Attempt at a Solution



well, I do not know much about this specific criteria, that is why i am posting it here.
 
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~JAZZY_JAZ~ said:

Homework Statement



I am posting on this forum to find a certain queation that has been given to me as an assignment.
the question reads: EXPLAIN THE FACTORS INFLUENCING SIGNAL INTENSITY IN MRI.

this is A - Level question so please keep it simple as possible.

The Attempt at a Solution



well, I do not know much about this specific criteria, that is why i am posting it here.

Welcome to the PF.

Are you familiar with the basics of MRI?

http://en.wikipedia.org/wiki/Mri

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yes i have done a few reports on it on how it works, how to prepare for it, the risks and benfits...its just i need to know what applications inside the mri can cause the intesity to reduce and how to increase it...

i have mentioned stuff like the part that the mri is scanning can affect intensity as it could be asmall area or large...as well as i have added information such as the condition of the patient, but i have not included anything of the mri itself such as the coils that may affect the intensity, but how...i just need any other application i will do the further information gathering myself.

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To solve this, I first used the units to work out that a= m* a/m, i.e. t=z/λ. This would allow you to determine the time duration within an interval section by section and then add this to the previous ones to obtain the age of the respective layer. However, this would require a constant thickness per year for each interval. However, since this is most likely not the case, my next consideration was that the age must be the integral of a 1/λ(z) function, which I cannot model.
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