--%>
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 : Passing by address or reference Passing

    Passing by address or reference: In this technique no separate memory build for formal variables that is, formal variables share similar location of actual variables and therefore any change on formal variables automatically reflected back to real var

    		•
  • Q : What is Datagram Datagram : It is a

    Datagram: It is a packet of information passed between the two communicating procedures across a network. Both the Transmission Control Protocol (abbreviated as TCP) and the User Datagram Protocol (abbreviated as UDP) are indirectly comprised in sendi

    		•
  • Q : How you explain binding in WSDL How you

    How you explain binding in WSDL?

    		•
  • Q : What is Concurrency Concurrency : This

    Concurrency: This is a feature of parallel programming. The parts of a program whose executions overlap in time are stated to execute concurrently. Java's thread characteristic support concurrency.

    		•
  • Q : Define Keyword Keyword : They are

    Keyword: They are reserve word containing special meaning of the language and cannot be employed as identifier.

    		•
  • Q : Maximum clock frequency of the circuit

    What do you mean by the term set up time and hold time constraints? Explain what do they mean? Which one is vital for estimating the maximum clock frequency of the circuit?

    		•
  • Q : Explain Synchronized statement

    Synchronized statement: It is a statement in which an object-lock should be obtained for the target object prior to the body of the statement and can be entered. Employed to enclose a critical section in order to save a race hazard.

    		•
  • Q : Explain the segmentation with paging

    Explain the segmentation with paging.

    		•
  • Q : Define the term Statement terminator

    Define the term Statement terminator: The semicolon (;) is employed to point out the end of a statement.

    		•
  • Q : What is the use of compatibility testing

    What is the use of compatibility testing?

    		•