--%>
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 a Port Port: It is a number

    Port: It is a number employed by a procedure to communicate with the other procedure across a network, employing the Transmission Control Protocol (abbreviated as TCP) or User Datagram Protocol (abbreviated as UDP), for instance.

    		•
  • 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 : Component which are used in 2nd layer

    What are the different types of component parts which are used in 2nd layer?

    		•
  • Q : What do you mean by the term JFC What

    What do you mean by the term JFC? Describe in brief.

    		•
  • Q : State the term non-XML resources State

    State the term non-XML resources?

    		•
  • Q : Data type conversion Data type

    Data type conversion: Conversion of one data type into the other data type. Two kind of conversion that is, A) Implicit Conversion: This is automatically taken care

    		•
  • Q : What is a Real-Time System What is a

    What is a Real-Time System?

    		•
  • Q : What is Transmission Control Protocol

    Transmission Control Protocol: It is the Transmission Control Protocol (abbreviated as TCP) is a set of rules which permit reliable communication among two processes across a network.

    		•
  • Q : Define owns to the Kernel Object Define

    Define owns to the Kernel Object? Answer: Kernel objects are owned through the kernel, not through a process.

    		•
  • Q : Problem on Planar scintigraphy Let

    Let assume seven PMTs situated around the origin of the x-y coordinates on the face of the Anger camera as illustrated in the figure. The size of the PMTs is 2mm by 2 mm and each PMT has been allocated a number. The single scintillation event yields a response from PM

    		•