Thoracic Organ Doses and Cancer Risk from Low Pitch Helical 4-Dimensional Computed Tomography Scans

Table 1

Differences of estimated dose between AveIP- and MIP-based simulations.

	AveIP		MIP
	Volume (cc)	Dose (cGy)	Volume (cc)	Dose (cGy)	Ratio
Heart	524.28	7.02	558.03	7.87	1.12
Lungs	1682.19	7.38	1680.46	8.25	1.12
Spinal Cord	9.16	6.67	8.81	7.65	1.15

AveIP = averaged intensity projection; MIP = maximum intensity projection.