--%>
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 VeriSoft VeriSoft (Godefroid,

    VeriSoft (Godefroid, 2005) is a model checker for C and C++; other languages can be used, but components in other languages are treated as black boxes. VeriSoft has been used to find defects in very large telecommunications programs (Chandra, Godefroi

    		•
  • Q : What is MIME MIME : Multipurpose

    MIME: Multipurpose Internet Mail Extensions (abbreviated as MIME) are rules which make it possible to utilize electronic mail to send content other than the simple text.

    		•
  • Q : Define the term Condition Define the

    Define the term Condition: It is a Boolean expression which controls a conditional statement or loop.

    		•
  • Q : Explain Structured programming

    Structured programming: It is a style of programming generally related with languages like FORTRAN, C, Pascal and so forth. Employing structured programming methods, a problem is frequently resolved employing a divide and conquer approach like stepwis

    		•
  • Q : Explain Coupling Coupling : Coupling

    Coupling: Coupling occurs whenever classes are aware of each of other as their instances should interact. The linkage between two classes which might be either weak or strong. Stronger coupling occurs whenever one class has a thorough knowledge of the

    		•
  • Q : Explain the way to initialize contents

    Explain the way to initialize contents of a dialog.

    		•
  • Q : Define Modem Modem : It is a

    Modem: It is a modulator-demodulator. A hardware device employed to connect a digital computer to an analogue telephone network by making analogue signals into digital signals, and vice-versa.

    		•
  • Q : Problem on COBOL source code errors

    There are many errors in the following COBOL source code. Identify the errors and rewrite the program so that it contains no errors:IDENTIFICATION DIVISION   (Full stop required)PROGRAM ID. ERRORS-EXAMPLE.DATA DIVISION    (Fu

    		•
  • Q : Difference between collection and arrays

    Write the difference between collection and arrays?

    		•
  • Q : Overriding a base class method in

    Explain the way to overriding a base class method in Visual Studio .NET and in Visual Studio 2005.

    		•