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

Table 6

Percentage reduction in ARD with 320-row compared to 64-row mode.

Detector site	Percentage reduction in ARD (mGy) with 320 row mode MDCTA compared to 64-row mode MDCTA
	Prospective ECG-gating protocol	Retrospective dose modulation
Left Lung	72%	81.52%
Left Mid-Breast	65.8%	74.8%
Breast Surface	64.53%	78.3%
Thyroid	77.2%	97.2%