Three-dimensional reconstructions of carotid bifurcation from CT images: evaluation of different rendering methods
| Autor: | R. Pozzi Mucelli, Z. Tarjan, F. Frezza, F. Pozzi Mucelli |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Adult
Male medicine.medical_specialty Rendering (computer graphics) medicine Image Processing Computer-Assisted Humans Radiology Nuclear Medicine and imaging Segmentation Carotid Stenosis Neuroradiology Aged medicine.diagnostic_test business.industry Ultrasound Subtraction Angiography Digital Subtraction General Medicine Middle Aged medicine.disease Stenosis medicine.anatomical_structure Carotid Arteries Angiography Female Radiology business Tomography X-Ray Computed Artery |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 0938-7994 |
| Popis: | Three-dimensional computed tomographic angiography (3D-CTA) and digital subtraction angiography of the cervical carotid artery were performed bilaterally in 15 patients with suspected stenoses. A new semi-automatic segmentation and new rendering methods were used. The degree of stenosis of internal carotid arteries, as determined both by axial slices and 3D images (surface, integral, maximum-intensity-projection, and raysum-rendered images), was compared qualitatively and quantitatively to angiographic findings. In correlation to angiography, the accuracy in determining the stenosis classification of internal carotid arteries was of 97% for axial slices and 59-90% for 3D images, respectively. Raysum (pseudoradiograph) rendering was found to be the most reliable rendering method and gave the most similar results to angiography. The accuracy of all rendering methods was improved by applying calcification removing algorithm, with a statistically significant difference between surface rendering without plaque removal and raysum rendering using the removing algorithm. |
| Databáze: | OpenAIRE |
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