Methodology for three-dimensional reconstruction of the left ventricle from transesophageal echocardiograms
| Autor: | G. Bashein, Florence H. Sheehan, M. L. Nessly, Roy W. Martin |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
medicine.medical_specialty
Acoustics and Ultrasonics Computer science Heart Ventricles Biophysics Iterative reconstruction Esophagus Microcomputers Histogram Image Processing Computer-Assisted medicine Humans Radiology Nuclear Medicine and imaging Computer vision Ejection fraction Radiological and Ultrasound Technology Cardiac cycle business.industry Orientation (computer vision) Perspective (graphical) Centroid Division (mathematics) Echocardiography Artificial intelligence Radiology business Algorithms Mathematics Software |
| Zdroj: | Ultrasound in Medicine & Biology. 19:27-38 |
| ISSN: | 0301-5629 |
| DOI: | 10.1016/0301-5629(93)90015-g |
| Popis: | A technique is presented for three-dimensional (3-D) reconstruction of the left-ventricular endocardial surface from multiplanar transesophageal echocardiograms, using both commercial software and investigator written Fortran programs for Intel 80286 and 80386 microcomputers. The approach provides quantitative global and regional cardiac performance measures and allows viewing the endocardial surface, at end-diastole and end-systole, from chosen perspectives. Anatomical landmarks are incorporated to aid in orientation. For regional calculation, the surface is divided into equal angular elements with each conceptually connected to the left-ventricular end-diastole centroid, forming a pyramidal volume element. This angular division automatically normalizes for heart size. The fractional change of these elements over the cardiac cycle provides a regional ejection fraction measure which is color-coded on the reconstructed endocardial surface. Composite perspective views, regional ejection fraction histograms and calculations of global end-diastolic, end-systolic, and stroke volumes, are all performed by the method. |
| Databáze: | OpenAIRE |
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