Left ventricular dual-energy digital subtraction angiography: a motion immune digital subtraction technique
| Autor: | D. J. Albright, M. S. Van Lysel, V. K. Gupta, D. G. Senior, William P. Miller, D. J. Ende |
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| Rok vydání: | 1991 |
| Předmět: |
Adult
Male medicine.medical_specialty Cardiac Catheterization Image quality media_common.quotation_subject medicine.medical_treatment Heart Ventricles Coronary Disease Coronary Angiography Ventricular Function Left Postoperative Complications Computer Systems medicine.artery medicine Contrast (vision) Humans Radiology Nuclear Medicine and imaging Cardiac imaging media_common Cardiac catheterization Aged medicine.diagnostic_test business.industry Subtraction Angiography Digital Subtraction Digital subtraction angiography Middle Aged Angiography Pulmonary artery Hypertension cardiovascular system Heart Transplantation Radiographic Image Interpretation Computer-Assisted Female Radiology Cardiology and Cardiovascular Medicine business Cardiomyopathies Algorithms |
| Zdroj: | International journal of cardiac imaging. 7(1) |
| ISSN: | 0167-9899 |
| Popis: | Digital subtraction angiography (DSA) allows quantitative analysis of ventricular function via densitometric and parametric imaging techniques. However, DSA is limited by the artifacts in temporal subtraction images that result from patient and cardiac motion. Dual-energy subtraction imaging is insensitive to motion. This study evaluated the initial application of dual-energy subtraction in cardiac patients. The image quality of dual-energy subtraction left ventriculograms obtained from a pulmonary artery injection of contrast was assessed in 13 patients, ranging in weight from 54 to 100 kg. The dual-energy images were compared with left ventricular images obtained using standard left ventricular injection cine angiography. End-systolic and end-diastolic ventricular volumes calculated from the cine (C) and dual-energy (DE) images using the Area-Length method were compared. The resulting regression line was DE = 0.98 C+ 7.0 ml, and the r value was 0.987. Dual-energy subtraction provided good left ventricular visualization, free from misregistration artifacts, even during patient motion. |
| Databáze: | OpenAIRE |
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