--%>
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 : Advantages of Object oriented

    Q. What are the advantages of Object Oriented Programming languages? Explain them. Ans. : Object oriented programming language has following advantages-

    Q : What is High level programming language

    High level programming language: Languages like Ada, Java, C++, and so on which give programmers with features like control structures, classes, methods, packages, and so forth. Such features are mostly independent of any specific instruction set, and

    		•
  • Q : Explain Package declaration Package

    Package declaration: It is a declaration employed to name a package. This should be the first item in the source file, preceding any import statements. For example,     pa

    		•
  • Q : What is Carriage return Carriage return

    Carriage return: The \r character. It is also used as a synonym for the `Return' or `Enter' key employed to terminate a line of text and the name derives from the carriage on mechanical typewriter.

    		•
  • Q : Choice of technology in coding of game

    What are the choice of technologies while coding a game?

    		•
  • Q : Define Little-endian Little-endian : It

    Little-endian: It is a common difference among machines is the order in which they store up the individual bytes of multi-byte numerical data. The little-endian machine stores the lower-order bytes prior to the higher-order bytes.

    		•
  • Q : Define the term Subordinate inner class

    Define the term Subordinate inner class: It is an inner class which executes well-defined subordinate tasks on behalf of its enclosing class.

    		•
  • Q : What is signal What is meant by the

    What is meant by the signal?

    		•
  • Q : State Precedence rules Precedence rules

    Precedence rules: The rules which determine the order of computation of an expression comprising more than one operator. The operators of higher precedence are computed before those of lower precedence. For example, in the expression x+y*z, the multip

    		•
  • Q : Application of S60 device The

    The application has been earlier tested along with an S60 2nd Edition device and this is Symbian Signed. So can I install similar application to another S60 device?

    		•