| Autor: |
Capuani S; Physics Department 'La Sapienza' University, and INFM UdR Roma1, P.le A. Moro 5, 00185 Rome, Italy., Branca RT, Alesiani M, Maraviglia B |
| Jazyk: |
angličtina |
| Zdroj: |
Magnetic resonance imaging [Magn Reson Imaging] 2003 Apr-May; Vol. 21 (3-4), pp. 413-4. |
| DOI: |
10.1016/s0730-725x(03)00154-1 |
| Abstrakt: |
In heterogeneous systems the amplitude of the intermolecular double-quantum (DQ) signal depends on sample heterogeneity over a correlation distance dc=pi/(gammaGct). In this paper two different CRAZED-type sequences were applied in a porous medium phantom. One of these sequences gives rise to a DQ-T2 weighted signal, while the other one gives rise to a DQ-T2* weighted signal. Experimental results indicate that tuning of the correlation distance dc in a porous medium can alter the DQ signal in a manner which depends on the microstructure. This is evident only using the CRAZED-type sequence which gives rise to a DQ-T2* weighted signal. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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