Iohexol for excretory urography: a comparative study

Area of Science:

• Radiology
• Medical Imaging
• Pharmacology

Background:

• Ionic contrast agents like Renografin 60 have been widely used for excretory urography.
• Nonionic contrast agents offer potential advantages in terms of patient tolerance and image quality.

Purpose of the Study:

• To compare the safety and efficacy of a new iodinated nonionic contrast agent, Iohexol, with an established ionic contrast agent, Renografin 60.
• To evaluate the incidence of adverse events and the quality of excretory urograms.

Main Methods:

• A double-blind study involving 55 patients with normal renal function.
• Patients received either Iohexol or Renografin 60 for excretory urography.
• Adverse side effects and the quality of the resultant urograms were assessed.

Main Results:

• No major adverse reactions were reported for either contrast agent.
• Minor side effects occurred more than twice as frequently with Renografin 60 compared to Iohexol.
• Excellent visualization of the collecting system was achieved in 44% of patients receiving Iohexol, versus 17% with Renografin 60.

Conclusions:

• Iohexol is a safe and effective nonionic contrast agent for excretory urography.
• Iohexol demonstrates a superior side effect profile and improved image quality compared to Renografin 60.
• The findings support the use of Iohexol for enhanced diagnostic accuracy in urography.