--%>
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 : Detecting sequence in signal line

    Explain how to detect a sequence of ‘1101’ arriving serially from the signal line?

    		•
  • Q : Define Capability Normal 0 false false

    Normal 0 false false

  • Q : Cmp and diff commands Explain the

    Explain the difference between” cmp” and “diff” commands?

    		•
  • Q : Explain Conditional operator

    Conditional operator: It is an operator taking three operands that is, a ternary operator. The conditional operator (?:) is employed in the form bexpr ? expr1 : expr2

    Q : Define Unions Unions: Unions in C and

    Unions: Unions in C and C++ are object overlays—aggregate quantities such as structs, except that each element of the union consists offset 0, and the total size of union is only as large as is required to hold its largest member (Kernighan and

    		•
  • Q : Inventory management system in UML

    Mini-Case The Hatcher Company is in the process of developing a new inventory management system.  One of the event handling processes in that system is Receive Supplier Shipments.  The (inexperie

    		•
  • Q : State the term XPath State the term

    State the term XPath?

    		•
  • Q : Define the term Array Define the term

    Define the term Array: It is a fixed-size object which can hold zero (0) or more items of the array's declared type.

    		•
  • Q : What is Block Block : The statements

    Block: The statements and declarations are enclosed between a matching pair of curly brackets ({ and }). For example, a class body is a block, as it is a method body. The block surrounds a nested scope level.

    		•
  • Q : State Sub type Sub type: It is a type

    Sub type: It is a type with a parent super type. The sub-type or super-type relationship is more common than the sub-class or super-class relationship. A class which implements an interface is a sub type of interface. An interface which expands the ot

    		•