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- Title
ASSESSMENT OF AORTIC ANULUS BEFORE PERCUTANEOUS ARTIFICIAL AORTIC VALVE IMPLANTATION WITH DIFFERENT MODALITIES.
- Authors
Lopatič, Irena; Ambrožič, Jana; Mišič, Jure
- Abstract
Introduction: Transcatheter aortic valve replacement (TAVR) is a newer method of treatment of selected patients with aortic stenosis with high operative risk. Precise measurement of the aortic annulus is crucial for patient selection and successful implantation of artificial aortic valve. Purpose and hypothesis: The purpose of this study was to compare measurements of aortic annulus obtained by transesophageal echocardiography-TEE and measurements obtained by multislice computed tomography-MSCT and to assess suitability of both methods in planning of TAVR procedure. Materials and methods: Measurements of aortic annulus were obtained in 40 patients by two imaging techniques (TEE and MSCT). We measured the diameter, circumference and the area of the annulus. The values obtained by TEE and MSCT were then compared and statistical methods were used to calculate deviations and to assess suitability of both methods. Results/Discussion: The average difference between the CT diameter given by the computer and the TEE diameter was 1.3 ± 1.3 mm. The average surface area given by the computer from the CT measurements was 417.08 ± 81.94 mm2, the calculated average value of the corresponding areas of the measured CT diameters was 448.87 ± 112.46 mm2, and the surface calculated from the annulus diameters measured by TEE was 370.29 ± 71.88 mm2. Computed tomography (CT) plays an increasingly important role in screening protocols for patients before TAVR. CT provides precise measurements of the aortic annulus and provides detailed anatomical assessment of aortic root and valve leaflets, suitability of inguinal access and provides the appropriate angles for optimal valve implantation procedure. Conclusion: CT imaging is a very important diagnostic tool in selecting patients for TAVR .
- Publication
Bulletin: Newsletter of the Society of Radiographers of Slovenia & the Chamber of Radiographers of Slovenia, 2014, Vol 31, p34
- ISSN
0718-5551
- Publication type
Academic Journal