Reply

Reply: We thank Dr. Ginsberg for his comment on our article, and we completely agree with him that angulation may improve the quality of spiral CT studies of the head and neck when dental fillings cause severe artifacts. The primary task of this study was to determine the bolus dynamics after intravenous administration of contrast agent. Therefore we designed a scanning protocol that was similar and comparable with protocols used in a majority of other institutions. Our review of the recent literature revealed that most institutions obviously perform such studies without angulation, and that is why we chose such a protocol.

Nevertheless, we believe that the results of our study may help to determine enhancement kinetics of cervical tissues even when different scanning parameters are used.