--%>
Assignment Help - homework help

Simulation of artifacts in CT using MATLAB

How is Simulation of artifacts in CT is done utilizing MATLAB?

E

Expert

Verified

Supposing that one of detectors (at l = l0) of a CT scanner is malfunction, which forever outputs a value of 0, i.e. g(l0, θ) = 0. The malfunctioned detector locates below the object however not in the center of the detector array as illustrated in the figure. The parallel ray geometry is supposed.

(1) If the projections are obtained with this CT scanner, display the sinogram for the object employed in Q1.

(2) Apply the inverse Radon transform to projections to re-construct the object. Display the re-constructed image.

(3) Discuss what types of artifacts are examined in the reconstructed image and what a technician must do to avoid such artifacts?

(4) In the inverse Radon transform (that is, ‘iradon’), use a distinct filter (that is, the default filter is Ram-Lak) and dispaly the reconstructed image. Discuss how and why the re-constructed image is enhanced.

859_matlab.jpg

   Related Questions in Programming Languages

  • Q : Chown Explain the chown, chmod and

    Explain the chown, chmod and chgrp?

    		•
  • Q : What is Abstract method Abstract method

    Abstract method: This is a method with the abstract reserved word in its header. The abstract method has no method body. Methods stated in an interface are for all time abstract. The body of an abstract method should be stated in a su

    		•
  • Q : Functions of states of the

    Mention the different states of the XMLHttpRequest an dalso describe their functions.

    		•
  • Q : Define Object-oriented language

    Object-oriented language: Programming languages like Java and C++ which permit the solution to a trouble to be stated in terms of objects that belong to the classes.

    		•
  • Q : Role of ScriptManagerProxy control?

    Explain the role of ScriptManagerProxy control?

    		•
  • Q : Recursive Matlab function Write a

    Write a recursive Matlab function TriUVRCol that solves a virtually upper triangular system of equations accessing the matrix by column. Write another recursive Matlab function LUPivRec that recursively computes the LU decomposition of a matrix using partial pivoting.

    		•
  • Q : What is Boundary error Boundary error :

    Boundary error: The errors which arise from programming mistakes prepared at the edges of a problem- indexing off the edge of an array, commencing with no items of data, loop termination and so forth. Boundary errors are a very general type of logical

    		•
  • Q : Define Object serialization Object

    Object serialization: The writing of an object's contents in such a manner that its state can be restored, either at a later time, or in a different procedure. This can be employed to store objects between runs of a program, or to transfer or shifts o

    		•
  • Q : Difference between the choice and list

    Illustrate the difference between the choice and list?

    		•
  • Q : Explain in process verses out of

    Explain in process verses out of process component.

    		•