TY - JOUR
T1 - Three-dimensional dynamic assessment of tricuspid and mitral annuli using cardiovascular magnetic resonance
AU - Maffessanti, Francesco
AU - Gripari, Paola
AU - Pontone, Gianluca
AU - Andreini, Daniele
AU - Bertella, Erika
AU - Mushtaq, Saima
AU - Tamborini, Gloria
AU - Fusini, Laura
AU - Pepi, Mauro
AU - Caiani, Enrico G.
PY - 2013/10
Y1 - 2013/10
N2 - AimsTo explore the potentiality of cardiovascular magnetic resonance (CMR) in the quantitative evaluation of mitral valve annulus (MVA) and tricuspid valve annulus (TVA) morphology and dynamics.Methods and resultsCMR was performed in 13 normal subjects and 9 patients with mitral (n = 7) or tricuspid regurgitation (n = 2), acquiring cine-images in 18 radial long-axis planes passing through the middle of MVA or TVA. A novel algorithm was used to obtain dynamic three-dimensional (3D) reconstruction of MVA and TVA. Analysis was feasible in all cases, allowing accurate 3D annular reconstruction and tracking. The 3D area increased from systole [MVA, median = 10.0 cm2 (first quartile = 8.6, third quartile = 11.4); TVA, 11.2 cm2 (8.8-13.2)] to diastole [MVA, 10.6 cm2 (9.4, 11.7); TVA, 11.9 cm2 (9.2-13.5)], with TVA larger than MVA. While the longest diameter showed similar systolic and diastolic values, the shortest diameter elongated from systole [MVA, 30 mm (29-33); TVA, 33 mm (31-36)] to diastole [MVA, 31 mm (29-32); TVA, 36 mm (33-39)]. Also, TVA became more circular than MVA. TVA showed lower peak systolic excursion in the septal [15.9 mm (13.0-18.5)] and anterior regions [17.9 mm (12.2-20.7)] compared with the posterior [21.9 mm (18.6-24.0)] segment. Values in MVA were smaller than in TVA, slightly higher in anterior [11.2 mm (9.5-13.0)] than in posterior [12.4 mm (10.2-14.6)] segments. Valvular regurgitation was associated with enlarged, flattened, and more circular annuli.ConclusionThe applied method was feasible and accurate in normal and regurgitant valves, and may potentially have an impact on diagnosis, improvement of surgical techniques and design of annular prostheses.
AB - AimsTo explore the potentiality of cardiovascular magnetic resonance (CMR) in the quantitative evaluation of mitral valve annulus (MVA) and tricuspid valve annulus (TVA) morphology and dynamics.Methods and resultsCMR was performed in 13 normal subjects and 9 patients with mitral (n = 7) or tricuspid regurgitation (n = 2), acquiring cine-images in 18 radial long-axis planes passing through the middle of MVA or TVA. A novel algorithm was used to obtain dynamic three-dimensional (3D) reconstruction of MVA and TVA. Analysis was feasible in all cases, allowing accurate 3D annular reconstruction and tracking. The 3D area increased from systole [MVA, median = 10.0 cm2 (first quartile = 8.6, third quartile = 11.4); TVA, 11.2 cm2 (8.8-13.2)] to diastole [MVA, 10.6 cm2 (9.4, 11.7); TVA, 11.9 cm2 (9.2-13.5)], with TVA larger than MVA. While the longest diameter showed similar systolic and diastolic values, the shortest diameter elongated from systole [MVA, 30 mm (29-33); TVA, 33 mm (31-36)] to diastole [MVA, 31 mm (29-32); TVA, 36 mm (33-39)]. Also, TVA became more circular than MVA. TVA showed lower peak systolic excursion in the septal [15.9 mm (13.0-18.5)] and anterior regions [17.9 mm (12.2-20.7)] compared with the posterior [21.9 mm (18.6-24.0)] segment. Values in MVA were smaller than in TVA, slightly higher in anterior [11.2 mm (9.5-13.0)] than in posterior [12.4 mm (10.2-14.6)] segments. Valvular regurgitation was associated with enlarged, flattened, and more circular annuli.ConclusionThe applied method was feasible and accurate in normal and regurgitant valves, and may potentially have an impact on diagnosis, improvement of surgical techniques and design of annular prostheses.
KW - Annular geometry
KW - Cardiovascular magnetic resonance
KW - Mitral valve annulus
KW - Tricuspid valve annulus
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U2 - 10.1093/ehjci/jet004
DO - 10.1093/ehjci/jet004
M3 - Article
C2 - 23341146
AN - SCOPUS:84878639549
VL - 14
SP - 986
EP - 995
JO - European Heart Journal Cardiovascular Imaging
JF - European Heart Journal Cardiovascular Imaging
SN - 2047-2404
IS - 10
ER -