Simulation of artifacts in CT using MATLAB
How is Simulation of artifacts in CT is done utilizing MATLAB?
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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.
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 : What is Variable Variable : It is the Variable: It is the memory block of specific size where value can be stored and modified throughout program execution. Example: int x, float y, float amount, char c;
Variable: It is the memory block of specific size where value can be stored and modified throughout program execution. Example: int x, float y, float amount, char c;
no-arg constructor: It is a constructor which takes no arguments. By default, each and every class without an explicit constructor has a default no-arg constructor with the public access. Its role is entirely to invoke the no-arg constructor of the in
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Arithmetic operator: The Operators, like +, -, *, / and %, which generate a numerical outcome, as a part of an arithmetic expression.
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Hash code: It is a value returned by a hash function. A hash code can be employed as an index into a random-access data structure, offering a proficient mapping between an object and its position. Employed by classes like HashMap.
Define the term Peripheral devices: It is the devices attached to a computer, like disk drives, printers, mice, and so forth.
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