Displaying items by tag: newcomer

Tuesday, 14 March 2017 04:34

Introduction to MR Physics Part 6c

Part 6c of a six part series covering the fundamentals of magnetic resonance imaging physics. This final section covers a recap of the previous five sessions and covers advanced imaging sequences and their application. Click here to view Part 6aPart 6b or Part 1a.

Terms covered in Part 6:

  • Cardiac CINE
  • Turbo Spin Echo (Fast Spin Echo)
  • Fast spin echo vs gradient echo
  • Fluid Attenuated Inversion Recovery (FLAIR)
  • Non-cartesian trajectories (spiral)
  • Parallel Imaging
  • Signal attenuation
  • Diffusion Weighted Imaging (DWI)
  • Diffusion tractography
  • 3D phase contrast (PC) MR angiography
  • Time-of-Flight (TOF) MR angiography
  • Double Inversion Recovery Black-Blood Imaging
  • Pulsed Arterial Spin Labeling (PASL)
  • Continuous (Pseduo-continuous) Arterial Spin Labeling (CASL)
  • Dynamic Susceptibility Contrast (DSC) Perfusion 
  • Dynamic Contrast Enhanced (DCE) Perfusion
  • Hemodynamic activation response
  • Blood Oxygen Level Dependent (BOLD)
Published in Video
Tuesday, 14 March 2017 04:16

Introduction to MR Physics Part 5c

Part 5c of a six part series covering the fundamentals of magnetic resonance imaging physics. In this section, Dr. Stafford applies the underlying physics to describe the basics of MR pulse sequences. Click here to view Part 5a , Part 5b or Part 1a.

Terms covered in Part 5:

  • NMR spectroscopy
  • Free Induction Decay (FID)
  • Adiabatic pulse
  • Spoiled gradient echo imaging
  • Balanced steady-state free precession (bSSFP)
  • Echo Planar Imaging (EPI)
  • Fast-spin Echo Imaging (FSE)
  • Parallel imaging acceleration
  • Gibb's ringing artifact
  • Hanning window filter
Published in Video
Tuesday, 14 March 2017 04:14

Introduction to MR Physics Part 5b

Part 5b of a six part series covering the fundamentals of magnetic resonance imaging physics. In this section, Dr. Stafford applies the underlying physics to describe the basics of MR pulse sequences. Click here to view Part 5a , Part 5c or Part 1a.

Terms covered in Part 5:

  • NMR spectroscopy
  • Free Induction Decay (FID)
  • Adiabatic pulse
  • Spoiled gradient echo imaging
  • Balanced steady-state free precession (bSSFP)
  • Echo Planar Imaging (EPI)
  • Fast-spin Echo Imaging (FSE)
  • Parallel imaging acceleration
  • Gibb's ringing artifact
  • Hanning window filter
Published in Video
Tuesday, 14 March 2017 04:09

Introduction to MR Physics Part 5a

Part 5a of a six part series covering the fundamentals of magnetic resonance imaging physics. In this section, Dr. Stafford applies the underlying physics to describe the basics of MR pulse sequences. Click here to view Part 5b or Part 1a.

Terms covered in Part 5:

  • NMR spectroscopy
  • Free Induction Decay (FID)
  • Adiabatic pulse
  • Spoiled gradient echo imaging
  • Balanced steady-state free precession (bSSFP)
  • Echo Planar Imaging (EPI)
  • Fast-spin Echo Imaging (FSE)
  • Parallel imaging acceleration
  • Gibb's ringing artifact
  • Hanning window filter
Published in Video
Tuesday, 14 March 2017 03:38

Introduction to MR Physics Part 4a

Part 4a of a six part series covering the fundamentals of magnetic resonance imaging physics. In this ambitious piece, Dr. Stafford introduces the complex concept of k-Space. Click here to view Part 4b or Part 1a.

 

Terms covered in Part 4:

  • Fourier transform
  • Cosine function
  • Sine function
  • inverse Fourier transform
  • Sinc function
Published in Video
Tuesday, 14 March 2017 03:20

Introduction to MR Physics Part 3b

Part 3b of a six part series covering the fundamentals of magnetic resonance imaging physics. In this section, Dr. Stafford expands on the concepts of gradients and echoes. Click here to view Part 3a or Part 1a.

Terms covered in Part 3:

  • Pulse sequence diagram
  • gradients
  • echoes (echo)
  • envelope function
  • Gradient Recalled Echo (gradient echo) (GRE)
  • spin echo
Published in Video
Tuesday, 14 March 2017 03:15

Introduction to MR Physics Part 3a

Part 3a of a six part series covering the fundamentals of magnetic resonance imaging physics. In this section, Dr. Stafford expands on the concepts of gradients and echoes. Click here to view Part 3b or Part 1a.

 

Terms covered in Part 3:

  • Pulse sequence diagram
  • gradients
  • echoes (echo)
  • envelope function
  • Gradient Recalled Echo (gradient echo) (GRE)
  • spin echo
Published in Video
Tuesday, 14 March 2017 02:58

Introduction to MR Physics Part 2b

Part 2b of a six part series covering the fundamentals of magnetic resonance imaging physics. In this section, Dr. Stafford introduces concepts of relaxation and image contrast. Click here to view Part 2a or Part 1a.

  

Terms covered in Part 2:

 

  • Image voxel
  • Nutation
  • Thermodynamic equilibrium magnetization
  • Proton density
  • Dephasing/Regrowth/Recovery/Decay/Relaxation
  • Bloch equation
  • T2 relaxation curve/ transverse dephasing curve
  • T1 vs T2
  • MR signal
  • Echo (TE)
  • Repetition Time (TR)
  • Inversion Recovery Imaging (IR)
  • Inversion time
  • MP-RAGE
  • Proton-weighted images

 

Published in Video
Tuesday, 14 March 2017 02:52

Introduction to MR Physics Part 2a

Part 2a of a six part series covering the fundamentals of magnetic resonance imaging physics. In this section, Dr. Stafford introduces concepts of relaxation and image contrast. Click here to view Part 1a or Part 2b.

 

Terms covered in Part 2:

  • Image voxel
  • Nutation
  • Thermodynamic equilibrium magnetization
  • Proton density
  • Dephasing/Regrowth/Recovery/Decay/Relaxation
  • Bloch equation
  • T2 relaxation curve/ transverse dephasing curve
  • T1 vs T2
  • MR signal
  • Echo (TE)
  • Repetition Time (TR)
  • Inversion Recovery Imaging (IR)
  • Inversion time
  • MP-RAGE
  • Proton-weighted images
Published in Video
Tuesday, 14 March 2017 02:47

Introduction to MR Physics Part 1b

Part 1b of a six part series covering the fundamentals of magnetic resonance imaging physics. In this primer, Dr. Stafford discusses the course outline and basic physics of precession and excitation. Click here to view Part 1a.

Terms covered in Part 1:

  • Bohr model of hydrogen atom
  • Stern-Gerlach experiment
  • Spin states
  • Spin 1/2 particle
  • Quantum mechanics
  • Precession
  • Larmor equation
  • Frequency of precession
  • Gyromagnetic ratio
  • Isotropic
  • Isochromat
  • Stationary frame
  • Moving frame
  • Faraday's law
  • Radiofrequency pulse
  • Resonance condition
  • Flip angle
  • Specific absorption rate
  • Pulse sequence
  • Tesla
  • Off-resonance
  • Shim
Published in Video
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