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Validation of a Holographic Display for Quantification of Mitral Annular Dynamics by Three-Dimensional Echocardiography.
Dumont, Karl-Andreas; Kvitting, John-Peder Escobar; Karlsen, Jørn S; Remme, Espen W; Hausken, John; Lundblad, Runar; Fiane, Arnt E; Urheim, Stig.
Afiliación
  • Dumont KA; Department of Cardiothoracic Surgery, Oslo University Hospital, Rikshospitalet, Oslo, Norway. Electronic address: kardum@ous-hf.no.
  • Kvitting JP; Department of Cardiothoracic Surgery, Oslo University Hospital, Rikshospitalet, Oslo, Norway.
  • Karlsen JS; Kalkulo AS, Fornebu, Norway.
  • Remme EW; Institute for Surgical Research, The Intervention Center, Center for Cardiological Innovation, Oslo University Hospital, Rikshospitalet, Oslo, Norway.
  • Hausken J; Department of Emergencies and Critical Care, Oslo University Hospital, Rikshospitalet, Oslo, Norway.
  • Lundblad R; Department of Cardiothoracic Surgery, Oslo University Hospital, Rikshospitalet, Oslo, Norway.
  • Fiane AE; Department of Cardiothoracic Surgery, Oslo University Hospital, Rikshospitalet, Oslo, Norway; Faculty of Medicine, Oslo University Hospital, Rikshospitalet, Oslo, Norway.
  • Urheim S; Department of Heart Disease, Haukeland University Hospital, Bergen, Norway; Institute for Surgical Research, Oslo University Hospital, Rikshospitalet, Bergen, Norway.
J Am Soc Echocardiogr ; 32(2): 303-316.e4, 2019 02.
Article en En | MEDLINE | ID: mdl-30293779
ABSTRACT

BACKGROUND:

Three-dimensional (3D) echocardiography with multiplanar reconstruction (MPR) is used clinically to quantify the mitral annulus. MPR images are, however, presented on a two-dimensional screen, calling into question their accuracy. An alternative to MPR is an autostereoscopic holographic display that enables in-depth visualization of 3D echocardiographic data without the need for special glasses. The aim of this study was to validate an autostereoscopic display using sonomicrometry as a gold standard.

METHODS:

In 11 anesthetized open-chest pigs, sonomicrometric crystals were placed along the mitral annulus and near the left ventricular apex. High-fidelity catheters measured left atrial and ventricular pressures. Adjustments of pre- and afterload were done by constriction of the inferior vena cava and the ascending aorta, respectively. Three-dimensional epicardial echocardiography was obtained from an apical view and converted to the autostereoscopic display. A 3D virtual semitransparent annular surface (VSAS) was generated to measure commissure width (CW), septal-lateral length, area of the mitral annular surface, nonplanarity angle, and the annular height-to-commissure width ratio in mid-systole and late diastole.

RESULTS:

Mitral annular measurements from the 3D VSAS derived from the 3D echocardiographic images and autostereoscopic display correlated well with sonomicrometry over a range of loading conditions CW length (r = 0.98, P < .00001), septal-lateral length (r = 0.98, P < .00001), annular surface area (r = 0.93, P < .001), nonplanarity angle (r = 0.87, P < .001), and annular height-to-commissure width ratio (r = 0.85, P < .01). The 3D VSAS showed better agreement with the sonomicrometric measurements compared with MPR.

CONCLUSIONS:

Mitral annular measurements using 3D VSAS correlate well with sonomicrometry over a range of loading conditions and may represent a powerful tool for noninvasive quantification of mitral annular dynamics.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Holografía / Función del Atrio Izquierdo / Función Ventricular Izquierda / Presión Ventricular / Ecocardiografía Transesofágica / Ecocardiografía Tridimensional / Válvula Mitral Tipo de estudio: Prognostic_studies Límite: Animals Idioma: En Revista: J Am Soc Echocardiogr Asunto de la revista: DIAGNOSTICO POR IMAGEM Año: 2019 Tipo del documento: Article

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Holografía / Función del Atrio Izquierdo / Función Ventricular Izquierda / Presión Ventricular / Ecocardiografía Transesofágica / Ecocardiografía Tridimensional / Válvula Mitral Tipo de estudio: Prognostic_studies Límite: Animals Idioma: En Revista: J Am Soc Echocardiogr Asunto de la revista: DIAGNOSTICO POR IMAGEM Año: 2019 Tipo del documento: Article