Fundamentals of Medical Imaging

by

George Zouridakis, Ph.D.

Associate Professor and Director

Biomedical Imaging Lab

 

Topic
Introduction

Overview of mathematics and physics of emerging biomedical imaging, including,

Fourier transforms, Radon transform, convolutions,

modulation and transfer functions.

X-Ray Imaging

Basic interactions of ionizing radiation: photon, electron, and neutron interactions. X-ray radiology, digital radiography. Scanning Methods, Area Detectors, Mammography,

Chest Radiography, Digital Fluoroscopy

Computed Tomography

Principle of Operation, Instrumentation and Technology, X-Ray Tubes, Detector Systems, Image Reconstruction Techniques. Image Artifacts, Quantitative CT,

Requirements for High-Speed CT, Spiral CT, Electron Beam Techniques,

Data Handling and Display Techniques

 

Magnetic Resonance Imaging

Principle of Operation, Wave Speed, Relaxation Times, Magnetic Field Gradients,

Fourier Reconstruction, High-speed K-space Coverage Techniques, Vector and Tensor Tomography, RF Coils, Multiple Receivers, Blood Flow,

Fourier Velocity Encoding.

 

MR Spectroscopy

Principles. Injected Paramagnetic Contrast Agents, Signal-to-Noise Ratio

Diffusion

 

PET

Principles of operation, Cyclotrons. Radioactive Substance Preparation, g-ray detectors.

3D acquisition, Correction, Reconstruction

 

SPECT

Instrumentation, g-camera. Multi-Camera Detectrors, Collimators, Image Reconstruction,

Compensation Methods, Artifacts.

 

Ultrasound

Transducers, Field Distributions, Acoustics and Vibration, Properties of Ferroelectric Materials, Ultrasonic Beam Forming, Signal Processing, Scattering

 

MSI and ESI

Forward and Inverse Problems. Signal-to-Noise Ratio, Magnetically-Shielded Rooms. Acquisition, Fiducial Points, Whole-Head Scanners, Source Models.

 

Optical Imaging

Optical Absorption Mediated Diagnostics: Pulsed Photothermal Radiometry.

Optical Scattering Mediated Diagnostics: Reflectometry and Low Coherence Tomography.

 

Visits to Clinical Sites:

X-ray, CT, Ultrasound, MRI, and PET in the Texas Medical Center.