Hi!
just a general remark about different techniques used for measurements in cardiology. The most common is, of course, transthoracic echo (cheaper, less invasive). And this is the standard technique that almost all consensus are based on. So, even if another technique proves to be more accurate, it doesnt change that much.
Example:
let suppose that some measurement, using transthoracis echo, begin to be a concern at say 50mm. All the studies that let to that cut off value were conducted using transthoracis echo. Now let assume that it is proven that transthoracis echo overestimates the real size by around 10% compared with a CT scan. This does not mean that the cut off becomes then 55mm. It would still be 50mm by echo (and probably 45mm by CT scan).
Regards
just a general remark about different techniques used for measurements in cardiology. The most common is, of course, transthoracic echo (cheaper, less invasive). And this is the standard technique that almost all consensus are based on. So, even if another technique proves to be more accurate, it doesnt change that much.
Example:
let suppose that some measurement, using transthoracis echo, begin to be a concern at say 50mm. All the studies that let to that cut off value were conducted using transthoracis echo. Now let assume that it is proven that transthoracis echo overestimates the real size by around 10% compared with a CT scan. This does not mean that the cut off becomes then 55mm. It would still be 50mm by echo (and probably 45mm by CT scan).
Regards