--%>
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 : Explain a quality and metrics reporting

    What opinion would you provide to someone who asked you where to begin to introduce to their company a quality and metrics reporting program?

    		•
  • Q : What is Leverage Model-Based Design

    Leverage Model-Based Design: Model-based design provides useful hints of how a large system can be reduced so that its state space becomes searchable. If not inherently visible in the design (for example, by means of using a “State” design

    		•
  • Q : Describe IEEE 754 IEEE 754 : The

    IEEE 754: The standard 754-1985 issued by Institute of Electrical and Electronic Engineers for the binary floating point arithmetic. It is the standard to which Java's arithmetic matches.

    		•
  • Q : What is File Transfer Protocol or FTP

    File Transfer Protocol: The File Transfer Protocol (abbreviated as FTP) states a standard set of rules which make it probable to transfer a file from one file system to the other.

    		•
  • Q : Explain Abstraction Abstraction : It is

    Abstraction: It is a simplified symbolization of something which is potentially quite complex. It is frequently not essential to know the precise details of how something works, is symbolized or is implemented, since we can still make use of it in its

    		•
  • Q : ERD What is the meaning ofDerive the

    What is the meaning ofDerive the department and staff relations from the following ERD.

    		•
  • Q : State Finalization Finalization :

    Finalization: Instantly before an object is garbage collected, its finalize method is called. This offers it the opportunity to free any resources it may be holding on to.

    		•
  • Q : Define the types of kernel objects

    Define the types of kernel objects.

    		•
  • Q : Write a program to display its negative

    Write a program in object code that reads a single digit decimal number and displays its negative in binary.  To do this, you must first read the number as a character and then convert it to its numeric value, as discussed in class.  Then, you're going to change this to a negative numbe

    		•
  • Q : Define Formal argument Formal argument

    Formal argument: The definition of a method’s argument is the part of a method header. Each and every formal argument has an associated type. Whenever a method is called, the actual argument values are copied into the analogous formal arguments.

    		•