Dual-phase scanning characteristics of multislice spiral CT for acute myocardial infarction / 第二军医大学学报
Academic Journal of Second Military Medical University
;
(12): 792-795, 2010.
Article
in Chinese
| WPRIM
| ID: wpr-840819
ABSTRACT
Objective:
To analyze the characteristics of multislice spiral computed tomography (CT) for acute myocardial infarction.Methods:
The anterior descending coronary arteries of 6 pigs were ligated at the 1/3 distal end to establish acute myocardial infarction model without reperfusion. Dual multislice spiral CT scanning was performed in all animals and the CT characteristics were analyzed.Results:
Acute myocardial infarction model was successfully established in all 6 animals. Myocardial perfusion deficits were detected during early phase scanning; the area of deficits were significantly decreased during late phase scanning (13.52 ± 5.22% vs 9.07 ± 3.47% P = 0.004), with a mean decrease of 32.14%. CT value of different myocardial varied at different scanning times the values of LV cavity decreased from (586 ± 111) HU to (294±53) HU (P = 0.001), that of the normal myocardial area decreased from (247±54) HU to (132±25) HU (P = 0.001); the values of the perfusion deficit regions were not significantly changed ([42 ± 14] HU vs [29 ± 23] HU, P = 0.289). During late phase scanning, CT value around residual perfusion deficit was higher than that of normal myocardium ([156±21] HU vs [132±25] HU, P = 0.004).Conclusion:
The dual-phase MSCT characteristics of AMI include early perfusion deficits, late enhancement and residual perfusion deficits. Early phase scanning may overestimate the infarction area.
Full text:
Available
Index:
WPRIM (Western Pacific)
Type of study:
Prognostic study
Language:
Chinese
Journal:
Academic Journal of Second Military Medical University
Year:
2010
Type:
Article
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