Physics of CT & MRI

Teacher

Sambangi Satyananda Shiva Sagar

Core Courses

Description
Teachers
Attendees
Reviews

Course Attendees

Still no participant

Course Reviews

Still no reviews

Course Name : Physics of CT & MRI

CUTM1773 : 3-0-1

Course Objectives

To Learn Physics of CT.
T0 Learn Physics of MRI.
To Learn Advanced Technologies in CT & MRI scan.

Learning Outcomes

Can Learn and Identify the CT scan physics and parts.
Can Learn and Identify the MRI scan physics and parts.
They will be learning Techniques and Parameters of CT & MRI.

Course Syllabus

Module-1 : Basic principle of CT scan history of CT Scan, EMI- History, System design etc CT Equipment description & Instrumentation CT gantry, patient table, CT computer & image processing system, image display, storage & recording, CT control console, other accessory.

Basic principle of MRI, Proton imaging, Spin, Precession, Larmours equation, Absolute and Relative contraindications, MRI preparation of Patient, MRI Accidents and Patient Counselling in MRI. Patient Transport system and Electrical supply Of MRI, ACR guidelines for Installation Of MRI. Types of MRI.

Module-2: Physics of CT: Tomography, Tomography moment and types, Types of CT beams, Detectors efficiency and Detector types, Scintillation Detector, Xenon Gas detectors, Collimators Generations of CT, Hounsfield Units, Grey Scale, Pitch, Concept of Windowing, WW, WL, Concept of Voxel, Pixel, Tube warm up procedure.

Module-3: Physics of MRI: Longitudinal and Transverse magnetization, Longitudinal and Transverse relaxation, T1 relaxation, T2 relaxation, T2* relaxation, T1 wt image, T2 wt image, FID, Time to repeat (TR), Time to Echo (TE), Parllel imaging Techniques, Magnetic Transfer. Basics of magnetism, Types of magnetism: Ferromagnetism, Para magnetism, Super para magnetism, Diamagnetism, Superconductivity, strength of external magnet, Tesla unit, Concept of proton unit, Larmour Frequency, Concept of resonance.

Module-4: RF coils and its types - Surface coil, Volume coils, Phased array coils, Pair Saddle Coil, Helmholtz Pair Coil, Bird, Cage Coil. Gradient coils and its types – Slice encoding gradient, Frequency encoding or read out gradient, Phase encoding gradient Advantages and Disadvnatages. Shimming, Ramping, Quench, Fringe field.

Module-5: Pulse Sequences - Introduction of spin Echo pulse sequence-conventional, Fast spin echo, Inversion recovery, Gradient pulse sequence Conventional gradient echo, The steady state, Coherent residual transverse magnetization, incoherent gradient pulse sequence, SSFP, EPI – Echo planar imaging , Balanced gradient.

Module-6: CT & MRI Image Reconstruction: Image Reconstruction, Back projection, Filter Back projection, Iterative method, Analytical method, CTNumber, Storage - Floppy, hard disc, magnetic tape, optical disc, DICOM, Tele radiology. Fourier transformation, Half-Fourier. K – Space in MRI. Image manipulation & Post processing in CT & MRI : Introduction, clinical use, advantages, disadvantages of MPR, MIP, SSD, CPR, VR, Scanning parameters.

Module -7: MRI Artifacts: Introduction, Ghost or Motion artifacts, aliasing artifact, chemical shift artifacts, chemical misregistration artifact, truncation artifact, magnetic susceptibility artifact, zipper artifact, shading, cross excitation or cross talk artifacts – Definition, Reasons, Corrective measures, Image interpretation of Artifacts. CT Artefacts: Definition, manifestation & Remedy Motion artefact, metal artefact, out of field artefact, beam hardening artefact, partial volume averaging artefact, ring artefact, pitch artefact, stair step artefact indetail.