Dusty wrote:
Now of course, such machines were duely banned on "Health" grounds but I cannot help feeling that if these machines were really a problem then there would be a load of people out there in their 50's and upwards developing bizarre "Foot Cancers"!
As far as I am aware, no such epidemic exists.
Quite. But the problem was more to do with those who were near the machines on a daily basis.
Having x-rays does increase your chances of developing cancers later in life, but that depends on the doseage.
I think the nrpb quotes the statistical amount of deaths of women, per year, from breast cancers caused by xrays as 66.
So, while no epidemic of foot cancer exists among those whose feet where examined with the equipment, the same cannot be said about the operators.
Note: At the time of the uses of these machines (1940-1970) nobody thought much about radiation induced cancers....and as far as I know, nobody has done any work work on past users.
Quote:
Despite these relatively high exposures, there were no reported injuries to shoe store customers. Unfortunately, the same cannot be said for the operators of these machines. Many shoe salespersons put their hands into the x-ray beam to squeeze the shoe during the fitting. As a result, one saleswoman who had operated a shoe fitting fluoroscope 10 to 20 times each day over a ten year period developed dermatitis of the hands. One of the more serious injuries linked to the operation of these machines involved a shoe model who received such a serious radiation burn that her leg had to be amputated (Bavley 1950).
And those few are highly likely to be just the tip of the iceberg....
HPA
SHOE XRAY
You may like (or not) to do some calculations relating the xray dose from the foot machines and the dose from a chest CT scan today...
2 REM is about 20 msv