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Transmitter CoilMRI Resource Directory:
 - Coils -
 
The coil of the RF transmitter, inside the MR imager is used in excitation of the spins. Also called transmit-only coil it is used to create the B1 field. As a radio frequency generator send this coil bursts of RF pulses. These pulses serve to disturb the spins in the patient.
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• View the DATABASE results for 'Transmitter Coil' (4).Open this link in a new window

Transverse Magnetization
 
The xy component of the net magnetization vector at right angles to the main magnetic field. The precession of the transverse magnetization at the Larmor frequency is responsible for the detectable MRI signal. In the absence of externally applied RF energy, the transverse magnetization will decay to zero with a characteristic time constant of T2, or more strictly T2*.
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• View the DATABASE results for 'Transverse Magnetization' (43).Open this link in a new window

 
Further Reading:
  Basics:
Measuring T1 and T2 Relaxation - Introductory NMR & MRI from Magritek
   by www.azom.com    
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Transverse Relaxation Time
 
The T2 time constant, which determines the rate at which excited protons reach equilibrium, or go out of phase with each other. A measure of the time taken for spinning protons to lose phase coherence among the nuclei spinning perpendicular to the main field due to interaction between spins, resulting in a reduction in the transverse magnetization. The transverse magnetization value will drop from maximum to a value of about 37% of its original value in a time of T2.
 
Images, Movies, Sliders:
 Brain MRI Images Axial T2  Open this link in a new window
      

 Breast MRI 2 Transverse T2 001  Open this link in a new window
 
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• View the DATABASE results for 'Transverse Relaxation Time' (4).Open this link in a new window

Traveling Saturation Pulse
 
A saturation pulse, which moves from one spatial location to another for each RF pulse excitation or each MR slice acquired.
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TriggerForum -
there are related threads
 
Generation of an electrical pulse, upon detection of a physiological signal, which can be used to initiate a synchronized data-acquisition pulse sequence.
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• View the DATABASE results for 'Trigger' (21).Open this link in a new window

 
Further Reading:
  Basics:
Iron overload: accuracy of in-phase and out-of-phase MRI as a quick method to evaluate liver iron load in haematological malignancies and chronic liver disease
Friday, 1 June 2012   by www.ncbi.nlm.nih.gov    
Tips for cardiac triggering in MRI
Wednesday, 9 May 2001   by clinical.netforum.healthcare.philips.com    
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 [last update: 2024-02-26 03:41:00]