Comparison of Rhenium and Iodine as Contrast Agents in X-Ray Imaging

Table 1

Settings for micro-computed tomography.

Scan ID	X-ray tube potential (kVp)	Amount of additional filtration (mm of Cu)	Current (mA)	Exposure time (ms)	Currentexposure time product (mAs)
X01	50	0.6	80	125	10
X02	80	0.6	60	125	7.5
X03	120	0.6	40	63	2.5
X04	120	1.2	40	63	2.5
X05	120	1.6	40	125	5

The XCA were imaged at 50, 80, and 120 kVp using a preclinical µCT scanner. The current and the exposure time were selected to avoid saturation of the detector. The spatial resolution of the images after reconstruction was 50 m.