Abstract：
:Relaxation time measurements were carried out during the preacute stage of lesion progression in an animal model of demyelination created in the internal capsule (ic) area of the rat brain using lysophosphatidyl choline (LPC). T1 and T2 were determined both before and after 36 h of lesion creation. Histology carried out on the rats after MR measurements showed focal demyelinating lesion and surrounding edema with prominent infiltration of inflammatory cells. Both T1 and T2 were statistically higher for the lesion compared to that determined before lesion creation. Percentage increase in T2 was found to be higher by approximately 45% compared to before lesion creation while T1 showed about 25% increase. Increase in T1 and T2 may be attributed to the early acute inflammatory response due to LPC. The beginning of the inflammatory response following LPC injection may also be a contributing factor. The study demonstrates that the quantitative estimate of MR relaxation provides useful information on the pathological events occurring during the early phase of the progression of demyelination.
journal_name
Magn Reson Imagingjournal_title
Magnetic resonance imagingauthors
Degaonkar MN,Raghunathan P,Jayasundar R,Jagannathan NRdoi
10.1016/j.mri.2004.11.010subject
Has Abstractpub_date
2005-01-01 00:00:00pages
69-73issue
1eissn
0730-725Xissn
1873-5894pii
S0730-725X(04)00319-4journal_volume
23pub_type
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