Volumen 17,
Ausgabe 4, 2014,
pp. 347-358
DOI: 10.1615/JPorMedia.v17.i4.60
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Lanlan Jiang
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China; Research Institute of Innovative Technology for the Earth, Kizugawa City, Kyoto 619-0292, Japan
Minghao Yu
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education
Yongchen Song
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116023, China
Yu Liu
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education,
Dalian University of Technology, Dalian 116023, China; Ningbo Institute of Dalian University of Technology, No. 26 Yucai Road, Jiangbei District, Ningbo 315016, China
Mingjun Yang
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, P.R. China
Xinhuan Zhou
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian, Liaoning 116024, China
Yuechao Zhao
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, No.2 Linggong Rd. Ganjingzi District, Liaoning 116024, China
Binlin Dou
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian, Liaoning 116024, China
Bohao Wu
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian, Liaoning 116024, China
Ziqiu Xue
Research Institute of Innovative Technology for the Earth, Kizugawa City, Kyoto 619-0292, Japan
Weizhong Li
Key Laboratory of Ocean Energy Utilization and Energy Conservation of the Ministry of
Education, Dalian University of Technology, Dalian, 116024, Liaoning, P.R. China; School of Energy and Power Engineering, Dalian University of Technology, Dalian, 116024,
Liaoning, P.R. China
ABSTRAKT
An attractive approach for MRI thermograph has been used to investigate temperature distribution in watersaturated porous media. A range of temperaturesensitive MRI parameters (T1 and chemical shift) were evaluated to measure temperature distribution induced heating and cooling in water and watersaturated porous media samples. The SPRG and SE sequences were used for the T1 method. For the SPRG sequence, the T1 dependence is about 0.0283 and 0.001 for water and watersaturated porous media, respectively. The error results from the T1 measurement. The T1 dependence for porous media was smaller than that for water, so the temperature measurement in porous media was more difficult. For the SE sequence, the relationship varied with TR. Generally, the relationship dependence of temperature is higher than that with the SPGR sequence. But the method with the spin echo sequence needs a long acquisition time, which is not useful to measurement temperatures changing quickly. For the chemical shift method, there was excellent linearity for water and porous media samples. The linearity relationship was independence with respect to physical or chemical structure, in addition to good temperature sensitivity. Also the chemical shift method gave promising results even at low magnetic fields. In contrast, the chemical shift method was currently accepted as the method of choice for MR thermometry in water-based homogeneous media. The T1 method is used for temperature measurement during fluid flow.