کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1808124 | 1025319 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
T1Ï Dispersion profile of rat tissues in vitro at very low locking fields
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The purpose of this study was to show the T1Ï dispersion profile in various rat tissues (liver, brain, spleen, kidney, heart and skeletal muscle) at low (0.1 T) B0 field at very low locking field B1, starting from 10 μT. The T1Ï dispersion profile showed a quite similar pattern in all tissues. The highest R1Ï relaxation rates were seen in the liver and muscle followed by the heart, whereas the values for spleen, kidney and brain were rather similar. The greatest difference between R2 relaxation rate and R1Ï relaxation rate at B1=10 μT was seen in the liver and muscle. The steepest slope for a dispersion curve was seen in the muscle. The value of T1Ï approximately approached the value of T2 when the locking field B1 approached 0. Except for the liver, the calculated apparent relaxation rate R2â² was slightly larger than the calculated one. The potential value of T1Ï imaging is to combine high R1 contrast of low-field imaging with the high signal-to-noise ratio (SNR) of high static field imaging. T1Ï relaxation and dispersion data presented in the current study help to optimize the rotating-frame MR imaging.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Magnetic Resonance Imaging - Volume 24, Issue 3, April 2006, Pages 295-299
Journal: Magnetic Resonance Imaging - Volume 24, Issue 3, April 2006, Pages 295-299
نویسندگان
Seppo K. Koskinen, Pekka T. Niemi, Sami A. Kajander, Markku E.S. Komu,