let's see... the Aorta you can hold in your hand it has weight you can see it there ...Throbing... If One makes his mind to be like a reflective Pool with out any thoughts, when it becomes that, One has lost their mind...so to speak and it's an OK thing
You won't "lose" it but if it ruptures... that can very easily be curtains.
I had an ultrasound aorta screening recently - a new NHS initiative for men over-60 - and was naturally delighted to be told all is normal and healthy!
The nurse explained the image to me: "That dark patch is the corner of your liver..." and so on, but I do admire the skill and knowledge of the diagnostic-imaging people in being able to analyse a complicated, rather grainy, monochrome ultrasound image.