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Characteristics of the left ventricular three-dimensional maximum principal strain using cardiac computed tomography: reference values from subjects with normal cardiac function
- Source :
- European radiology. 30(11)
- Publication Year :
- 2019
-
Abstract
- This study evaluated the characteristics of left ventricular maximum principal strain (LV-MPS) using cardiac CT in subjects with normal LV function. Of 973 subjects who underwent retrospective electrocardiogram-gated cardiac CT using a third-generation dual-source CT without beta-blocker administration, 31 subjects with preserved LV ejection fraction ≥ 55% assessed by echocardiography without coronary artery stenosis and cardiac pathology were retrospectively identified. CT images were reconstructed every 5% (0–95%) of the RR interval. LV-MPS and the time to peak (TTP) were analyzed using the 16-segment model and compared among three levels (base, mid, and apex) and among four regions (anterior, septum, inferior, and lateral) using the Steel–Dwass test. The intra- and inter-observer reproducibilities for LV-MPS were calculated using intraclass correlation coefficients (ICCs). The intra- and inter-observer ICCs (95% confidence interval) for peak LV-MPS were 0.96 (0.94–0.97) and 0.94 (0.92–0.96), respectively. The global peak LV-MPS (median, inter-quantile range) was 0.59 (0.55–0.72). The regional LV-MPS significantly increased in the order of the basal (0.54, 0.49–0.59), mid-LV (0.57, 0.53–0.65), and apex (0.68, 0.60–0.84) (p
- Subjects :
- Cardiac function curve
Male
medicine.medical_specialty
Intraclass correlation
Heart Ventricles
Ventricular Function, Left
030218 nuclear medicine & medical imaging
03 medical and health sciences
Electrocardiography
0302 clinical medicine
Reference Values
Internal medicine
Medicine
Humans
Radiology, Nuclear Medicine and imaging
Computed tomography angiography
Retrospective Studies
Ejection fraction
medicine.diagnostic_test
business.industry
Ultrasound
Stroke Volume
General Medicine
Stroke volume
Middle Aged
Myocardial Contraction
Confidence interval
Apex (geometry)
Echocardiography
030220 oncology & carcinogenesis
Cardiology
Female
Radiology
business
Tomography, X-Ray Computed
Subjects
Details
- ISSN :
- 14321084
- Volume :
- 30
- Issue :
- 11
- Database :
- OpenAIRE
- Journal :
- European radiology
- Accession number :
- edsair.doi.dedup.....366659777faef5b86e5b199c8f27e3ba