Table 3.

Dose measurements for different settings.

Covered	Voltage [kV]	Current [$\mathrm{\mu }$A]	FOV [mm${}^2$]	Pixel size [$\mathrm{\mu }$m]	Time [s]	Dose [mGy]
–	90	200	73 $\times$ 73	143	19	14.0
–	90	200	73 $\times$ 73	143	19	13.9
–	90	200	73 $\times$ 73	143	19	14.8
–	90	200	40 $\times$ 40	78	19	21.3
–	90	200	20 $\times$ 20	39	19	41.6
x	90	200	73 $\times$ 73	143	19	13.8
x	90	200	40 $\times$ 40	78	19	20.0

Measurements taken with wrapping the probe with a layer of 1cm meat to mimic scattering within a mouse are indicated by ’x’. Please note that a smaller FOV (smaller pixel size) is achieved by moving the X-ray source closer to the mouse/specimen which results in elevated dose levels.