With that, you know, the other thing to remember is there are different techniques available. Each has its strength and weaknesses so which to use when it becomes very important.
Obviously, you know TTE stands for a transthoracic echo, very easy to use, portable and it's a reliability is an issue because, you know, the visibility of image as I'll show you images coming down is kind of different. The spatial resolution is on the lower side.
TOE stands for transesophageal echo. It's nothing but it's echocardiography but using it, it's an invasive echocardiography where you're putting the probe in somebody's feeding tube and taking pictures of the heart from behind through the feeding tube so that's an invasive way of imaging the aorta.
CT is another technique than MRI, basically in terms of spatial resolution in the sense that how well you can look at the structure CT trumps. Inter, in terms of moving structure that can be seen transthoracic echo, echo ultrasound and MRI are good at that. CT is a radiation-based technology but remember one thing things are changing with radiation. We are not using as much radiation we use in the past for imaging of the aorta like before.
CT and MRI obviously use contrast too and remember the contrast has nephrotoxicity but it doesn't affect everybody. CT contrast is called, has iodine in it and MRI contrast has gadolinium in it. Even the indications for patients with renal problems are changing. We could use MRI contrast if needed now.
And the cost obviously I won't get into it. It's variable in different countries when you, when you use it.
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