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Cardiac Findings on Non-Gated Thoracic CT Case 5

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And I have a case here. One of the only cases here that

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I could not locate to provide

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you a scrollable stack here. I'm giving

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you a self-scrolling stack

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so to speak and I'd like to tell me what is

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the most significant abnormality on

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the CT. This is a woman who came in with chest

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pain to the ER. This is a non-gated

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CT that was done and a very dramatic CT

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and I'll put up the poll question. Now if we would where is

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the most significant agormality here? And actually there

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are multiple every so you may be correct if you

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guess a couple of different things here.

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I'll give you just a couple of minutes as that Scrolls by to

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take a look.

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Alright, let's open the or close the poll that is and see

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what people thought about this case.

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So some people said cardiac Chambers and some

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people said pericardium.

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All right. Well, let me tell you what I see. So let's

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take a look at The myocardium here. So the

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my program should be you know from enhancing but

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look at this this whole region of the LV Apex and the

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septum the apical septum and mid septum. It's actually

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not enhancing very well at all.

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So look at that area that whole area non-enhancing. Well

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compared to the rest of the mycardium now as

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the the aortic valve Scrolls by

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look at that Big Bowl along the aortic

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valve. So let me show you what what happened here. This is

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a big profusion defect in the

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LED territory. And this was caused and

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you can narrow the windows and see that this is a big perfusion defect

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where the LV micronym is not enhancing as

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well as the rest of the normally enhancing my cardium and

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this is Led vascular territory and

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you can see that I can

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reformat this and this demonstrate that further and this

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was actually due to

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A thrombus along the aortic valve

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you can see the thrombus right there in this patient. You

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already had some pre-existing valve disease. So we're looking at

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an acute myocardial infarct that was

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caused by a thrombus symbolizing to the

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LED and you can sort of see that there that the LED was not enhancing

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very well. So this this is

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something you're going to see if you look for it you're going to see this on a

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fairly frequent basis if you're looking

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at Imaging from the ER especially and how's that

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that pattern different from an old mine?

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Well, this is actually a I'll move

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this out of the way for a second.

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This is actually an old am I and you can see that there are

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several signs that this is old rather than acute MI. You

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can see the fatty change of the submentocardial left

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ventricle. You can see that the wall

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is thin here. This is the normal wall the septum.

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This is the thin wall of the Apex here. And so

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this is a chronic Mi or old am I you

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can also see in chronic end Forex calcification like

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this but contrast that to case like this

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and I'll show you that this is a patient you

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had chest pain who came in had a in an abdominal

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CT and you saw this perfusion defect and

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notice how the mycardium here is not thin compared

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to the rest of my cardigan, but it

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is not enhancing very, well. It's not enhancing

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as well as the normal myocardium.

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And look you can window this and make it look even more dramatic you

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can do reformats on it. So this is another patient

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who had a cute Mi who came in to have an

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abdominal CT. And the reason for the pain was actually

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the acute MI a cardiac

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cause and this patient at calf had

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a hundred percent occlusion of the LED.

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Let's take a look at this case. This this patient came in

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with with abdominal pain.

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And had a really thicken Loop of bowel

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right here. And the reason for that is this abnormality

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up here. If you look at the the base of

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the heart, you see this huge area of Admiral enhancement

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of The myocardium and you can

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see in the scroll scrolling stack that the normal

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icardium is here and this is a huge perfusion defect

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in RCA territory. And if you could look right

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there at the Apex, you can see that there is a

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thrombus here that was responsible for embolizing and going

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to you know, mesenteric arteries and

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causing this ischemic bowel. So you're going to

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see these you're gonna see these acute Mice from

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from time to time. So just wanted to make sure you had seen a

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couple of these cases.

Report

Faculty

Brent P Little, MD

Thoracic Radiologist & Assistant Program Director for the Radiology Residency

Massachusetts General Hospital, Harvard Medical School

Tags

Vascular

Myocardium

Chest CT

Chest

Cardiac CT (SCCT Cat B1 Video Case)

Cardiac

CTA

CT