--%>
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 Native Mode Native Mode :

    Native Mode: Whenever all the domain controllers in a specified domain are executing Windows 2000 Server. This mode permits organizations to take benefit of new Active Directory features like Universal groups, nested group membership, and the inter-do

    		•
  • Q : Program for Linux operating system that

    Write a program for Linux operating system that uses Posix threads to sort a large array.  Specifically, you should write a program to generate random numbers. Then create at least two threads, each of which sorts a portion of the array. After the thr

    		•
  • Q : Describe Data type Data type : It is a

    Data type: It is a specifier to build memory block of some particular size and kind. C++ provides two kinds of data types: A) Fundamental type: That is not composed

    		•
  • Q : Explain Hot spot Hot spot : This is an

    Hot spot: This is an area in an image map with a specific significance. A program usually monitors movements of the mouse, and reacts according to the actions related with the hot spots over which it passes. This may comprise displaying various status

    		•
  • Q : CORBA allows high performance

    'CORBA was designed to allow high performance distributed applications to be written’. Discuss. Definitely, ’CORBA was designed to allow high performance distributed applications to be written’ because it provides:

    		•
  • Q : Define Peer Peer : It is a term

    Peer: It is a term employed of the Abstract Windowing Toolkit (AWT) to refer to the underlying classes which give the platform-specific implementation of the component classes.

    		•
  • Q : Difference between collection and arrays

    Write the difference between collection and arrays?

    		•
  • Q : What is Common Gateway Interface Common

    Common Gateway Interface: The Common Gateway Interface (abbreviated as CGI) is a standard which permits Web clients to interact with programs on Web server. The CGI script is on the server and is able to process arguments or input from a client, and r

    		•
  • Q : Explain Fully qualified class name

    Fully qualified class name: The name of a class, comprising any package name and including class name. The class outline is as follows:     package oddments;    class Outer

    		•
  • Q : What is an Initializer Initializer : A

    Initializer: A block stated at the outermost level of a class - identical to a method devoid of a header. The initializer blocks are executed, in order, whenever an instance is formed. They are executed prior to the constructor of the defining class,

    		•