AI Article Synopsis
- This study compares the effectiveness of electron beam computed tomography (EBT) and transthoracic echocardiography (TTE) in measuring aortic valve area (AVA) in 30 patients.
- The results showed a significant correlation between the AVA measurements from both methods, but EBT reported a larger AVA size than TTE by about 0.51 cm².
- The findings suggest that EBT is a valuable and non-invasive technique for assessing anatomical AVA, while TTE focuses on calculating functional AVA, which accounts for the differences in results.
Article Abstract
The purpose of this study was to compare electron beam computed tomography (EBT) with transthoracic echocardiography (TTE) in determining aortic valve area (AVA). Thirty patients (9 females, 21 males) underwent a contrast-enhanced EBT scan (e-Speed, GE, San Francisco, CA, USA) and TTE within 17 +/- 12 days. In end-inspiratory breath hold, a prospectively ecg-triggered scan was acquired with a beam speed of 50-100 ms, a collimation of 2 x 1.5 mm and an increment of 3.0 mm. The AVA was measured with planimetry. A complete TTE study was performed in all patients, and the AVA was computed using the continuity equation. There was close correlation between AVA measured with EBT and AVA assessed with TTE (r = 0.60, P < 0.01). The AVA measured with EBT was 0.51 +/- 0.46 cm(2 )larger than the AVA calculated with TTE measurements. EBT appeared to be a valuable non-invasive method to measure the AVA. EBT measures the anatomical AVA, while with TTE the functional AVA is calculated, which explains the difference in results between the methods.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2048829 | PMC |
| http://dx.doi.org/10.1007/s10554-007-9208-x | DOI Listing |
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