Dynamic CT Scanning

In dynamic CT scanning, a series of rapid images using helical CT is obtained during peak vessel contrast enhancement. As with IVP, the kidney is visualized in the (1) vascular phase, when major vessels are visualized; (2) nephrogram phase, when contrast reaches the tubules and medullary opacification occurs; and (3) pyelogram phase, when calyceal and pelvic filling is observed. In trauma, dynamic CT is useful in demonstrating compromise of parenchymal perfusion and parenchymal fracture margins. Dynamic CT can also differentiate abscesses and hematomas.

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