Discrepancy between x-ray and real life cm

Edit Post

Hey
Has anyone experienced a difference between the gain in cm seen in x-rays and actual height gain?
Mine shows 3.5-3.7 cm in the measured gap in x-rays but actually it feels like less..having hard time to measure height accurately at the moment, because of posture issues... But still for now it doesn't feel like almost 4 cm gain...
I figured that the gap in bone measured on x-rays may not translate into actual height gain, if the soft tissues doesn't comply so much with bone lengthened. But I'm just theorizing...

Edit Post

because femurs are no straight, so some degree of loss is expected to happen.

Edit Post

X-rays progress while spreading out radially, thus enlarging the X-ray image beyond its actual size.
The magnification rate varies depending on the imaging method, but it is usually a few percent.
Similar discussions are being held on the following topic.

http://www.limblengtheningforum.com/index.php?topic=84206.msg266487#msg266487