1.
Concepts Magn Reson Part B Magn Reson Eng
; 29(4): 210-221, 2006.
Artigo
em Inglês
| MEDLINE
| ID: mdl-20354575
RESUMO
We describe a prototype system built to allow open-access very-low-field MRI of human lungs using laser-polarized (3)He gas. The system employs an open four-coil electromagnet with an operational B(0) field of 4 mT, and planar gradient coils that generate gradient fields up to 0.18 G/cm in the x and y direction and 0.41 G/cm in the z direction. This system was used to obtain (1)H and (3)He phantom images and supine and upright (3)He images of human lungs. We include discussion on challenges unique to imaging at 50 -200 kHz, including noise filtering and compensation for narrow-bandwidth coils.
2.
Klin Med (Mosk)
; 68(7): 95-7, 1990 Jul.
Artigo
em Russo
| MEDLINE
| ID: mdl-1700188