Francesca Tedeschi - The Phantom of Radon

• The Phantom Of Radon transform is used for computerized tomography (CT) where a phantom is a fictitious image used to build a fictitious datum, which is the synogram.
• The goal is to improve the accuracy of the Radon transform by recognizing discontinuities in the phantom, which are challenging to handle, especially in medical imaging applications.
• Researchers have developed an exact single radon transform that is analytical rather than numerical, making it more suitable for testing reconstruction algorithms.
• Error estimation is critical, and the difference between the two Radon transform radon transforms shows that error occurs along discontinuities.
• There are different types of phantoms, including ellipses, shapes that can be used for testing with exact Radon transform analytical Radon transform.
• Iterative methods are another approach; however, the current focus is on analytical methods to simplify the process.

Technical concepts:

• Phantom: fictitious images used for computerized tomography CT
• Radon transform: inverse transform that computes the synogram
• Exact single transform: analytical rather than numerical
• Discontinuities: challenging to handle in medical imaging applications
• Error estimation
• Phantoms can be represented as fun times square or rectangles

Practical applications:

• Medical imaging testing and reconstruction
• Computerized tomography (CT)
• Tomography machine