Is the optical Bloch equation violated in Pr3+ : LaF3?

1992 ◽  
Vol 53 (1-6) ◽  
pp. 84-87 ◽  
Author(s):  
T. Muramoto ◽  
Y. Takahashi ◽  
T. Hashi
2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Adnan Trakic ◽  
Jin Jin ◽  
Ewald Weber ◽  
Stuart Crozier

Conventionally, magnetic resonance imaging (MRI) is performed by pulsing gradient coils, which invariably leads to strong acoustic noise, patient safety concerns due to induced currents, and costly power/space requirements. This modeling study investigates a new silent, gradient coil-free MR imaging method, in which a radiofrequency (RF) coil and its nonuniform field (B1+) are mechanically rotated about the patient. The advantage of the rotatingB1+field is that, for the first time, it provides a large number of degrees of freedom to aid a successfulB1+image encoding process. The mathematical modeling was performed using flip angle modulation as part of a finite-difference-based Bloch equation solver. Preliminary results suggest that representative MR images with intensity deviations of <5% from the original image can be obtained using rotating RF field approach. This method may open up new avenues towards anatomical and functional imaging in medicine.


2016 ◽  
Vol 77 (4) ◽  
pp. 1630-1638 ◽  
Author(s):  
Jinjin Zhang ◽  
Michael Garwood ◽  
Jang-Yeon Park

1966 ◽  
Vol 34 (12) ◽  
pp. 1164-1168 ◽  
Author(s):  
D. ter Haar

Sign in / Sign up

Export Citation Format

Share Document