원저 : 탈륨 재주사영상법에서 휴식기재분포영상의 의의 ( Role of Rest Redistribution Imaging in T1 - 201 Reinjection Imaging Technique ) () |
Author |
범희승(Hee Seung Bom),송호천(Ho Chun Song),김지열(Ji Yeul Kim),정명호(Myung Ho Jeong),강정채(Jung Chaee Kang), |
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Affiliation |
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Abstract |
Apparent washout of T1-201 may occur between
redistribution and reinjection images. To examine the
frequency of it, we prospectively compared 4-hour
redistribution and reinjection images in 63 consequent
patients. Al1 patients underwent pharmacological stress
test using 0.56 mg/kg dipyridamole. Immediately after
the 4-hour redistribution images, 1mCi T1-201 was
injected at rest, and images were reacquired 10 minutes
after reinjection. The stress, redistribution, and
reinjection images were then analyzed
semiquantitatively (0=no uptake, l=faint uptake,
2=mildly diminished uptake, 3=normal uptake). Of the
100 abnormal myocardial regions on the stress images,
54 showed either complete or partial reversibility on
4-hour redistribution images. After reinjection 11(21,
2%) of these regions demonstrated apparent T1-201
washout due to low differential uptake of the tracer,
Such lesions would appear irreversible if
redistribution imaging is not performed before
reinjection. Thus 4-hour redistribution imaging should
be performed for assessment of myocardial ischemia and
viability. |
Keyword |
T1-201, Reinjection, Redistribution, Myocardial ischemia, Viability |
Full text Article |
28501301.pdf
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