TABLE 2

Radiation Dose and Dose Equivalent from different Protocols for Acquiring CT Attenuation Data

	Rest		Stress		Total
CT protocol	mGy	mSv	mGy	mSv	mGy	mSv	Total CT + Rb (mSv)
Helical CT^* rest + stress	5.7	1.33	5.7	1.33	11.4	2.66	7.10
Cine rest + stress + obligatory helical CT^†	10	2.36	10	2.36	22.9	5.39	9.83
	2.9	0.67
Cine stress + low-dose obligatory helical CT^†	2.9	0.67	10	2.36	12.9	3.03	7.47
⁸²Rb 1,850 MBq, intravenous		2.22		2.22		4.44

↵* Helical CT (200 mA) used for attenuation correction of emission data.
↵† Obligatory helical CT (100 mA) required by commercial software to complete image acquisition but not used for attenuation correction.
+ = addition to or cumulative dose.