20.500.12556/DiRROS-24396 Comparison of pulmonary and aortic root and cusp dimensions in normal adults using computed tomography potential implications for Ross procedure planning Objectives: The Ross procedure is currently receiving renewed interest. Its function and durability depend on preservation of pulmonary valve anatomy; limited data exist on normal pulmonary valve geometry. The objective was to compare aortic and pulmonary root and cusp dimensions in adults with normal tricuspid aortic and pulmonary valves. Methods: We reviewed 507 coronary computed tomography studies, selecting those with adequate visibility of both pulmonary and aortic roots for further analysis. Diastolic aortic and pulmonary root and cusp dimensions were measured. Root dimensions at different phases of the cardiac cycle were measured in 3 patients. Results: We analysed studies of 50 patients with the mean age of 54 years [standard deviation (SD): 16]. In end-diastole, pulmonary root had a smaller sinutubular to basal ring ratio than the aortic root [0.82 (SD: 0.09) vs 1.14 (SD: 0.12), P<0.001]. Aortic and pulmonary cusps had similar dimensions; however, pulmonary cusp effective height was lower [5.9 mm (SD: 1.6) vs 8.4 mm (SD: 1.2), P<0.001]. Pulmonary basal ring perimeter was largest at end-diastole and smallest at end-systole, with the relative difference of 23.5% (SD: 2.7). Conclusions: The pulmonary root has a similar cusp size compared to the aortic root, but a different shape, resulting in a lower pulmonary cusp effective height. The perimeter of the pulmonary basal ring changes during the cardiac cycle. These findings suggest that stabilizing the autograft to normal aortic, rather than pulmonary, root dimensions should result in normal autograft cusp configuration. Computed tomography angiography could become a tool for personalized planning of the Ross procedure. computed tomography angiography pulmonary valve anatomy ross procedure aortic valve anatomy cardiac cycle true false true Angleški jezik Ni določen Neznano 2025-11-26 14:28:36 2025-11-26 14:28:36 2025-11-27 03:58:58 0000-00-00 00:00:00 2024 0 0 Nasl. z nasl. zaslona; Opis vira z dne 29. 7. 2025; str. 1-9 issue 6 vol. 39 Dec. 2024 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 0000-00-00 616.1 2753-670X 10.1093/icvts/ivae206 244110339 RAZ_Jelenc_Matija_2024.pdf RAZ_Jelenc_Matija_2024.pdf 1 A034E3A563E04CBB8A0F3A2D94DB3F6C 11b9b0cd58996f79eda09e37956bb505e665e234ff348a259cf02f60b0ddce2c f0264c87-cacb-11f0-94a7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=36315 https://academic.oup.com/icvts/article/39/6/ivae206/7919603 0 ff226c24-cacb-11f0-94a7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=36316 Univerzitetni klinični center Ljubljana 0 0 0