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Brain scintigraphy with Tc 99 ‐pertechnetate in the evaluation of patients with cerebrovascular lesions
Author(s) -
Olsen Tom Skyhøj,
Christensen Jon,
Skriver Elisabeth Bech,
Lassen Niels A.
Publication year - 1983
Publication title -
acta neurologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.967
H-Index - 95
eISSN - 1600-0404
pISSN - 0001-6314
DOI - 10.1111/j.1600-0404.1983.tb04568.x
Subject(s) - pertechnetate , nuclear medicine , lesion , scintigraphy , medicine , technetium , stroke (engine) , hematoma , technetium 99m , radiology , pathology , physics , thermodynamics
‐ Brain scintigraphy with Tc 99 ‐pertechnetate (Tc 99 ‐scan) was performed 4 times in 95 consecutive stroke patients: on average 5 days, 18 days, 103 days and 194 days after the stroke. The type (infarct, hematoma), size and localisation of the lesion was evaluated by CT‐scan performed 3 times in all: on average 3 days, 18 days and 207 days after the stroke. The detection rate of Tc 99 ‐scan was 31 % on day 5, 47 % on day 18, 18 % on day 103 and 9 % on day 194. The detection rate was however highly dependent upon: (i) the localisation of the lesion, i.e. superficially localised lesions were nearly always identified (90%) while infarcts localised deep in the hemisphere were identified in only 20 % of the patients; (ii) the size of the lesion, i.e. large deep infarcts were seen with a much higher frequency than small deep infarcts. The detection rate of the CT‐scan was practically not dependent upon the time of investigation: 63% on day 3, 70% on day 18, 69% on day 207. The detection rate of the Tc 99 ‐scan and CT‐scan was nearly identical for large superficially localised lesions 2–3 weeks after the stroke. In this period, however, CT‐scan identified 30 deep infarcts. Only 12 of these were identified by Tc 99 ‐scan.