The Value of Cerebral CT Angiography with Low Tube Voltage in Detection of Intracranial Aneurysms

Table 2

The comparative results of radiation dose between C-CTA and L-CTA groups.

Radiation dose	Group C-CTA	Group L-CTA
CTDIvol (mGy)	55.73	35.86	⋯	⋯
Scan length (cm)			0.37	0.720
DLP (mGy⋅cm)			18.24	0.000
ED (mSv)			18.24	0.000