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Bicuspid Aortic Valve (3 Sinus with Fusion) Case Review

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This next case,

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we're gonna look at a typical appearance of a bicuspid aortic valve

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due to fusion of two of the cusps. I'm gonna start in a typical way,

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which is I'm gonna look at the, um, valve in the short axis plane.

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So going off this cornal plane,

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I'm going to place my crosshairs on the middle of the valve and reorient my

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axial plane such that it's parallel to the aortic valve plane.

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And then repeat the process on the sagittal image here.

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And now we get a nice look at the aortic valve.

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You can see already there's a really big calcification in this patient.

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And then as I scroll upward, these images are obtained in diastole.

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You can see that there's this big calcification located right at the junction

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of the right cusp and the left cusp in this patient. Um,

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and it goes all the way top to bottom and there's no separation,

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both two cupps. Now you also wanna check this as a diastolic image,

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so I also wanna check systole to see what this looks like when the valve is

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open. So here I am in systole,

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and actually let's go to an even earlier phase of systa.

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I'm going to the 20% phase and here the 20% phase of

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systole, this is when you should see a valve opening.

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And you can see actually that you have one commissure here and another

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commissure here, and in these two cusps with the commissure,

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but there's no opening between those two commissures. There's this,

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this heavy calcification and you can see that the leaflet itself

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is heavily calcified with the calcification of this ridge here

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between the leaflets, also known as a ra.

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And that basically what you've got is opening in the midline and no opening over

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here, uh, between these two commissures.

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So just this what's known as a fish mount opening,

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which is characteristic o bicuspid valve.

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I'm gonna try to play this so you can see it in a sene imaging.

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Some of these acquisitions are a little grainy because we used, uh,

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dose modulation and lemme just reorient a little higher.

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There we go.

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And I think you can see that there is that sort of characteristic fish mouth

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opening,

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like right about this part right there of the caric cycle.

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You can see it and then the valve moves up and down again. So this is a,

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uh,

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typical appearance of a bicuspid valve with right left fusion and

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a calcified ra. And like we said in the video before,

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this is actually the most common type of bicuspid valve you're gonna encounter.

Report

Faculty

Stefan Loy Zimmerman, MD

Associate Professor of Radiology and Radiological Science

Johns Hopkins Medicine Department of Radiology and Radiological Science

Tags

Vascular

Idiopathic

Congenital

Cardiac valves

Cardiac CT (SCCT Cat B1 Video Case)

Cardiac

CTA

CT

Acquired/Developmental