The following table or figure may be downloaded to PowerPoint for personal use in teaching and presentations. This feature is available to all subscribers to the journal.

You MUST read and follow the guidelines at Request to Reproduce AJR Content if you are distributing or using AJR content beyond academic use (limited distribution, non-revenue producing, or educational purposes).

(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.

Fig. 3A —Representative cases of group 2B using empiric experience to set flow rate of thoracic CT aortography (window level, 100 H; window width, 800 H). In our study, empiric setting resulted in similar average enhancement but slopes varied considerably, which means enhancement was not homogeneous during examination. Empiric setting in 7-year-old girl undergoing thoracic CT aortography. Multiplanar reformation image from left common carotid artery to descending aorta shows ascending-type bolus geometry, which indicates early timing. Average enhancement in region of interest (ROI) was 429.4 ± 59.4 H with slope of 38.5 H/s. Note that attenuation in descending aorta is higher than that in left common carotid artery.