Abstract | UNLABELLED: PATIENTS, METHODS: 68 patients with syndrome X aged 32 to 60 years were subjected to myocardial imaging using (99m)Tc-MIBI according to the two-days protocol: at rest and after dipyridamole infusion. Semiquantitative evaluation of the images was based on the assessment of (99m)Tc-MIBI uptake in 17 myocardial segments using a 5-points scale (0 point -- normal uptake, 4 points -- no uptake). Scores obtained in each segment were summed up, constituting the summed rest score (SRS) and summed stress score (SSS). RESULTS: Mean SRS was 7.9 +/- 4.8 and mean SSS was 7.2 +/- 4.4 (non-significant difference). Individual comparison of SRS and SSS values revealed three patterns of scintigraphic images: 1) in 25 patients (36.8%), a paradoxical improvement of perfusion at stress images was found, 2) in 23 patients (33.8%), the myocardial perfusion deteriorated after dipyridamole, 3) in 20 patients (29.4%), no significant change of the myocardial perfusion between rest and stress images occurred. CONCLUSIONS: In cardiac syndrome X, myocardial SPECT with dipyridamole stress shows different patterns of myocardial perfusion that reflects heterogeneity of this pathology.
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Authors | R Czepczyński, I Smolarek, D Rogacka, M Kaźmierczak, H Wysocki, J Sowiński |
Journal | Nuklearmedizin. Nuclear medicine
(Nuklearmedizin)
Vol. 45
Issue 3
Pg. 111-4
( 2006)
ISSN: 0029-5566 [Print] Germany |
PMID | 16710506
(Publication Type: Comparative Study, Journal Article)
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Topics |
- Electrocardiography
- Exercise Test
- Heart Diseases
(diagnostic imaging)
- Humans
- Microvascular Angina
(diagnostic imaging)
- Reference Values
- Retrospective Studies
- Syndrome
- Tomography, Emission-Computed, Single-Photon
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