A method for standardized computed tomography angiography-based measurement of aortic valvar structures

Valle-Fernández, Raquel del; Jelnin, Vladimir; Panagopoulos, Georgia; Dudiy, Yuriy; Schneider, Laurence M; Jaegere, Peter T. de; Schultz, Carl; Serruys, Patrick W.; Grube, Eberhard; Ruiz, Carlos E.

doi:10.1093/eurheartj/ehq093

Cited by 15 publications

(9 citation statements)

References 17 publications

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“…A virtual ring passing the three nadirs of the insertion of the aortic valve leaflets can be drawn. We agree with the investigators [4][5][6][7][8] who described this virtual ring itself is the aortic annulus. In this paper, we use the term 'aortic annulus' as the virtual ring.…”

Section: Discussionsupporting

confidence: 92%

Aortic Annulus Diameter Measurement: What Is the Best Modality?

Yano

Nakamura

Nagahama

et al. 2012

ATCS

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Purpose: The purpose of this study was to clarify the most suitable method to measure the aortic annulus diameter. Patients and Methods: Fifty-five patients, who had undergone aortic valve replacement at Miyazaki University Hospital between April 2008 and May 2011, were included in this study. The maximum diameter of the sizing tool that could be inserted into the left ventricle through the annulus had been predicted, based on the diameter measured by each modality. Agreement with surgery and each imaging modality, namely transthoracic echocardiography, multidetector computed tomography and contrast angiography, were compared using Bland-Altman analysis. Results: The predicted aortic annulus diameter, based on the diameter measured by transthoracic echocardiography, multidetector computed tomography and contrast angiography, was 20.3 ± 2.50, 23.9 ± 3.19, and 23.5 ± 3.55 mm, respectively, whereas, the diameter measured at surgery was 23.7 ± 2.99 mm. Predicted aortic annulus diameter measured by multidetector computed tomography best agreed with that measured at surgery. Conclusion: We conclude that the aortic annulus diameter, measured by multidetector computed tomography, is the best modality to measure the aortic annulus diameter.

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Section: Discussionsupporting

confidence: 92%

Aortic Annulus Diameter Measurement: What Is the Best Modality?

Yano

Nakamura

Nagahama

et al. 2012

ATCS

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“…In each LV model, an aorta‐LVOT centerline was constructed to define the LVOT long axis . The direction of the LVOT long axis was estimated in all registrations.…”

Section: Methodsmentioning

confidence: 99%

“…In each LV model, an aorta-LVOT centerline was constructed to define the LVOT long axis. 30 The direction of the LVOT long axis was estimated in all registrations. The direction vectors were matched (same patient), and inter-observer difference (expressed as the angle between the corresponding LVOT long axes) was computed for all pairs.…”

Section: Inter-observer Agreement Using Lvot Longaxis Directionmentioning

confidence: 99%

An image fusion tool for echo‐guided left ventricular lead placement in cardiac resynchronization therapy: Performance and workflow integration analysis

et al. 2019

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Background The response rate to cardiac resynchronization therapy (CRT) may be improved if echocardiographic‐derived parameters are used to guide the left ventricular (LV) lead deployment. Tools to visually integrate deformation imaging and fluoroscopy to take advantage of the combined information are lacking. Methods An image fusion tool for echo‐guided LV lead placement in CRT was developed. A personalized average 3D cardiac model aided visualization of patient‐specific LV function in fluoroscopy. A set of coronary venography‐derived landmarks facilitated registration of the 3D model with fluoroscopy into a single multimodality image. The fusion was both performed and analyzed retrospectively in 30 cases. Baseline time‐to‐peak values from echocardiography speckle‐tracking radial strain traces were color‐coded onto the fused LV. LV segments with suspected scar tissue were excluded by cardiac magnetic resonance imaging. The postoperative augmented image was used to investigate: (a) registration accuracy and (b) agreement between LV pacing lead location, echo‐defined target segments, and CRT response. Results Registration time (264 ± 25 seconds) and accuracy (4.3 ± 2.3 mm) were found clinically acceptable. A good agreement between pacing location and echo‐suggested segments was found in 20 (out of 21) CRT responders. Perioperative integration of the proposed workflow was successfully tested in 2 patients. No additional radiation, compared with the existing workflow, was required. Conclusions The fusion tool facilitates understanding of the spatial relationship between the coronary veins and the LV function and may help targeted LV lead delivery.

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“…1). In light of the literature, the following planes were selected for analysis: aortic leaflets basal attachment plane (ALBAP) [29], at the nadir of the aortic cusps; VBR, directly under the zenith of the left ventricular outflow track [1,5,8]; ascending aorta, 4 cm above the ALBAP; and sinotubular junction (upper limit of commissures), corresponding to the transition between the sinuses of Valsalva and the tubular aorta [29].…”

Section: Selection Of Mdct Slice Planesmentioning

confidence: 99%

“…Valsalva sinus height was measured between the ALBAP and the sinotubular junction [32]. The heights of the left and right coronaries were measured, respectively, on oblique coronal and sagittal slices between the lower end of the ostium and the ALBAP [29].…”

Section: Measurementsmentioning

confidence: 99%

A novel contribution towards coherent and reproducible intravalvular measurement of the aortic annulus by multidetector computed tomography ahead of transcatheter aortic valve implantation

Dementhon

Rioufol

Obadia

et al. 2015

Archives of Cardiovascular Diseases

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A method for standardized computed tomography angiography-based measurement of aortic valvar structures

Abstract: This method showed a high degree of inter-rater reliability and absolute agreement for AVAp diameters. Agreement was lower for AA-LV angle and distance to coronary artery measurements, emphasizing the need for software improvements and standardized image acquisition protocols.

Cited by 15 publications

References 17 publications

Aortic Annulus Diameter Measurement: What Is the Best Modality?

Aortic Annulus Diameter Measurement: What Is the Best Modality?

An image fusion tool for echo‐guided left ventricular lead placement in cardiac resynchronization therapy: Performance and workflow integration analysis

A novel contribution towards coherent and reproducible intravalvular measurement of the aortic annulus by multidetector computed tomography ahead of transcatheter aortic valve implantation

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