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[CT virtual angioscopy in the study of thoracic aortic dissection]
1Divisione di Radiologia Diagnostica ed Interventistica, Dipartimento di Oncologia, dei Trapianti e delle Nuove Tecnologie in Medicina, Università degli Studi, Pisa, Italy. pasbragi @tin.it
La Radiologia Medica
|December 12, 2001
Summary
Virtual intraluminal endoscopy (VIE) effectively visualizes thoracic aortic dissection, accurately identifying intimal flaps and lumen details. This technique aids in understanding dissections but requires correlation with other imaging for interpretation.
Area of Science:
- Medical Imaging
- Cardiovascular Imaging
- Endoscopy
Background:
- Virtual endoscopy simulates endoscopic views using CT and MR data.
- It offers a 3D visualization of internal surfaces of hollow organs.
Purpose of the Study:
- To evaluate the 2.5-year experience with virtual intraluminal endoscopy (VIE) in studying the thoracic aorta.
- To assess VIE's utility in patients with aortic dissection and normal aortas.
Main Methods:
- Retrospective evaluation of 43 CT angiography (CTA) datasets of the thoracic aorta.
- Data processed with dedicated software for intraluminal visualization.
- Study included 23 patients with suspected aortic dissection and 20 controls.
Main Results:
- VIE correctly visualized intimal flaps in all 23 aortic dissection cases.
- It accurately identified flap origin and differentiated true/false lumens.
- Artifacts were noted but interpretable with correlation to axial and multiplanar images.
Conclusions:
- Virtual endoscopy is a valuable tool for evaluating thoracic aortic dissection.
- It enhances the definition of anatomical details in aortic dissections.
- Correlation with axial and multiplanar views is essential for accurate interpretation.