How is CT-IVU undertaken?
Unlike a traditional IVU study serial images are not acquired - just one acquistion. Images are acquired typically 8 minutes after IV contrast to acquire a IVU. Some institutions give a small dose (20mg) of frusimide before the scan and others also give saline to maximise excretion.
CT-IVU component demonstrating a right hydronephroureter secondary to the VUJ stone.