Abstract:
:Relaxation times (T1 and T2) were measured in vivo in mongrel dogs at fields of 0.3, 0.5, 1.0, 1.35, and 1.5 tesla (T). T1 was measured using nine values of inversion time ranging from 10 to 1,280 msec. T2 was measured with a four-point multiple spin-echo sequence. Relaxation times were calculated for muscle, kidney cortex, spleen, and adipose tissue. T2 is independent of field. A linear fit to the field dependence of T1 yields slopes of 400-500 msec/T for tissues in which the primary source of protons is water. The lower slope of adipose (approximately 150 msec/T) reflects the different mechanism of spin-lattice relaxation of the -CH2 protons.
journal_name
Radiologyjournal_title
Radiologyauthors
Johnson GA,Herfkens RJ,Brown MAdoi
10.1148/radiology.156.3.2991980subject
Has Abstractpub_date
1985-09-01 00:00:00pages
805-10issue
3eissn
0033-8419issn
1527-1315journal_volume
156pub_type
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