====Image Preprocessing ====
    * Briefly explain the two types of image distortion 
    * Given U=AX, what is A called?
    * Write the above in matrix notation (no coordinates given, just (x_k, \y_k)).
    * Name one interpolation method and describe briefly.

====Defect pixel interpolation====
    * Write down the Band limitation algorithm/steps. 
    * State 2 disadvantages of bandlimitation 
    * Defect pixel interpolation in frequency domain (equation derivation)

====Sinograms (Fan Beam), 3D Reconstruction====
    * What is above image called (sinogram)
    * Label the x- and y- axis of the diagram, briefly explain how we get sinogram from measured CT values. 
    * Map sinogram on to X-Y plane by describing or drawing 
    * State Orlov’s condition
    * Draw on the unit sphere one example that satisfies Orlov’s condition and one example that doesn’t. 
 
====Iterative Reconstruction====
    * Kaczmarz Method given, what's another name for this method (//Algebraic Reconstruction Technique//)
    * Given x_(i+1)= x_i +λn, derive for x_i.
    * What is the main drawback of this method? (//Slow convergence is the main drawback of ART.//)
    * Give alternate options. (//Simultaneous ART (SART) and Simultaneous Iterative Reconstruction Technique (SIRT)//)

====Rigid Registration====
    * Properties of Rotation Matrix
    * Fill in the blanks for optimization problem for 2-D rigid registration (pk, qk, Rotation and Translation Equation). 

====SVD====
    * Applications of SVD (MCQ) 
    * Are the singular values randomly arranged or in decreasing order diagonally and are they non-negative or negative values? (MCQ)