. Author manuscript; available in PMC: 2014 Feb 9.

Published in final edited form as: AJR Am J Roentgenol. 2012 Feb;198(2):412–417. doi: 10.2214/AJR.11.7230

TABLE 4.

Estimated Eye Lens Dose to the Patient From Brain Perfusion CT

Scanner	Tube Potential Setting (kVp)
Scanner	80	100	120	140

Sensation 64	2.4	5.2	8.9	14.5
VCT	4.1	7.1	10.7	14.7
Brilliance 64	2.2	NA	6.7	10.4
Aquilion 64	4.4	7.7	11.5	14.7^a

Note—The eye lens dose is normalized to the unit of mGy/100 mAs. Sensation 64 manufactured by Siemens Healthcare, VCT manufactured by GE Healthcare, Brilliance 64 manufactured by Philips Healthcare, and Aquilion 64 manufactured by Toshiba. NA = not applicable.

Aquilion 64 provides a tube potential setting of 135 instead of 140 kVp.