--%>
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 : Explain Multiple inheritance Multiple

    Multiple inheritance: The capability of a class or interface to expand more than one interface or class. In Java, multiple inheritance is only accessible in the circumstances which are shown below: An interf

    		•
  • Q : Explain Functional programming

    Functional programming: It is a style of programming related with languages like Haskell. The functional programming languages are more strongly tied to a mathematical concept of `function' than imperative programming languages. This makes it simpler

    		•
  • Q : Define HyperText Markup Language

    HyperText Markup Language: The HyperText Markup Language (abbreviated as HTML) is a simple presentation language employed to markup the content of the Web pages. Its tags appear frequently in pairs to mark sections of text which must be represented in

    		•
  • Q : Define the term Condition Define the

    Define the term Condition: It is a Boolean expression which controls a conditional statement or loop.

    		•
  • Q : Define Keyword Keyword : They are

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

    		•
  • Q : Define Fetch-execute cycle

    Fetch-execute cycle: The simple set of steps which are endlessly recurring by a computer's Central Processing Unit for each and every program instruction: `Fetch the next instruction suggested by the program counter,' `update the program counter to pa

    		•
  • Q : Differences between logical and

    What are the differences between logical and physical address spaces?

    		•
  • Q : Is it possible to encode mathematics

    Is it possible to encode mathematics using XML?

    		•
  • Q : What is an Operand Operand : An operand

    Operand: An operand is an argument of the operator. Expressions comprise combinations of operands and operators. The value of an expression is determined by exerting the operation stated by each and every operator to the value of its operands.

    		•
  • Q : What is Break statement Break statement

    Break statement: A statement employed to break out of a loop, switch statement or labeled block. In all situations, control continues with the statement instantly, subsequent to the containing block.

    		•