Absorbed Radiation Dose in Radiosensitive Organs Using 64- and 320-Row Multidetector Computed Tomography: A Comparative Study

Table 1

Comparison of Absorbed Radiation Dose (ARD) (mGy) for radiosensitive organs (Lung, Breast and Thyroid) between prospective imaging at 320-row MDCT versus prospective/step & shoot method at 64-row MDCT adjusting the effects of tube voltages and heart rates.

Locations	320-row mode	64-row mode	value
Left Lung	6.102	21.841	<0.001
Left Breast	6.728	19.687	<0.001
Thyroid (Left lobe-26)	0.208	0.913	<0.001