If A human body of 75 Kg. and 50 Kv X-ray tube and 10 cm in contact and current I=10mA. Calculate Dose Rate which in (Gy/s) = (mA * Exposure Time * Conversion Factor) / (Distance^2) Where: mA (milliamperes) = 10 Exposure Time (seconds) = 10 & for X-rays at 50 kV = 0.175 Gy/(s*mA). ?
The formula that mentioned might be a simplified version or specific to certain cases, but it's not a general formula used for calculating radiation dose from an X-ray unit.
The formula for radiation dose of an x-ray unit Gy/sec
D = g*(kV)*(mAs)/d^2
where g is conversion constant at Tube potential (Kv).
and
d=distance (m)
I= current (mAs)
if this will add to the discussion, but Volt^2 might be easy to remember if you think of dosage in Photons per second, an Ampere of unit charge as (1/e = 6.2415091E18 per second) and energy in Watt /seconds.
Watts = Volts*Amperes = Volts^2/Ohm.
The total absorbed dose in
Gy=Joules/Kilogram
is
Gy=Watts*Seconds/Kilogram
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