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22.058, Principles of Medical Imaging
Homework #1 Solutions
1. Define the instrument response function (IRF) and the point spread function
(PSF), and explain their relation to the image resolution. Why is it convenient to
assume that the PSF is
1. Give the functional form and sketch both the real and imaginary components
of the Fourier transformation (with respect to x) of the following functions.
Identify the spatial frequencies, wave-numbers, and features in the spectra.
is a constant rea
ELECTROMECHANICAL COUPLING WITH VISCOUS FLUIDS
We can specify the relevant variables as
v 1 (x2)
i 2 JO
+ 13E3 (x
component of the momentum equation is
This problem is
a simple extension of that considered in Sec.
the purpose of emphasizing how the geometric dependence of the electrical force
depends intimately on the electrical constraints.