--%>
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 : What is Super type Super type : It is a

    Super type: It is a type with a child sub type. The sub-type or super-type relationship is more common than the sub-class or super-class relationship. An interface which is implemented by the class is a super type of the class. The interface which is

    		•
  • Q : Write a recursive function intpower(base

    Write a recursive function intpower(base, exponent) that when invoked returns base^exponent. For example, intpower(3,4) = 3*3*3*3. Assume that the exponent is an integer greater than or equal to 1.

  • Q : Determining group ID of new file

    Explain various options available in order to determine the group ID of new file?

    		•
  • Q : Define the term Graphical User Interface

    Graphical User Interface: A Graphical User Interface (abbreviated as GUI) is a part of a program which permits user interaction through graphical components, like menus, buttons, text areas, and so forth. Interaction frequently includes the usage of a

    		•
  • Q : Define way of kernel object outlive

    Explain the way of the kernel object outlive the process which created it.

    		•
  • Q : Define Parallel programming Parallel

    Parallel programming or parrelel computing is the concurrent use of multiple compute resources to resolve a specified problem. Parallel program always comprises of concurrently executing processes, problem decomposition relates to the manner in which

    		•
  • Q : State the term WSDL State the term WSDL

    State the term WSDL?

    		•
  • Q : Illustrates XML is an important

    Illustrates XML is an important development.

    		•
  • 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 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.

    		•