Related Experiment Video
Updated: Aug 9, 2026

Image Acquisition Method for the Sonographic Assessment of the Inferior Vena Cava
Published on: January 13, 2023
Ioversol for intravenous urography: a comparison study
A J Kaufman1, R Concepcion, F K Kirchner
1Department of Radiology & Radiological Sciences, Vanderbilt University School of Medicine, Nashville, Tennessee 37232-2675.
Insights
Ioversol and iohexol, both low-osmolar, nonionic contrast media, demonstrated equivalent safety and image quality in intravenous urography. Adverse effects were mild and comparable between the two agents, indicating they are interchangeable for this procedure.
Area of Science:
- Radiology
- Medical Imaging
- Pharmacology
Background:
- Nonionic, low-osmolar iodinated contrast media are preferred for intravenous urography.
- Ioversol is a newer agent compared to iohexol.
Purpose of the Study:
- To compare the safety, tolerance, and image quality of ioversol and iohexol.
- To evaluate adverse effects and patient-reported symptoms during intravenous urography.
Main Methods:
- A double-blind study involving 80 patients undergoing intravenous urography.
- Patients were randomized into two groups (40 each) receiving either ioversol or iohexol.
- Assessment included vital signs, patient tolerance (heat, pain), adverse events, and urogram image quality.
Main Results:
- No severe or life-threatening reactions occurred in either group.
- Mild adverse effects like perceived body heat, nausea, unpleasant taste, and headache were reported at similar rates for both ioversol and iohexol.
- Vital signs remained stable, and urogram image quality was equivalent between the two contrast agents.
Conclusions:
- Ioversol and iohexol are equivalent in terms of safety, adverse effect profile, and diagnostic image quality for intravenous urography.
- Both agents are well-tolerated, with only mild, transient side effects observed.
- The findings support the interchangeable use of ioversol and iohexol in clinical practice.
Abstract:
A new nonionic, low-osmolar iodinated contrast media, ioversol, was compared with another low-osmolar, nonionic contrast media, iohexol, in 80 patients undergoing intravenous urography. There were 40 patients in each contrast group. Patients were assessed for changes in vital signs, patient tolerance (heat and pain), and other adverse effects. Double-blind evaluation was also performed for comparison of the urogram image quality. There were no severe, life-threatening reactions for either contrast group. Ten patients (25%) receiving ioversol and seven (17.5%) receiving iohexol perceived body heat related to the injection of contrast material. Two patients (5%) in each group experienced mild nausea. Two patients (5%) of each group experienced noted unpleasant taste, and two patients (5%) of the iohexol group complained of headache. Vital signs remained stable without significant change in both groups, and image quality was considered equivalent. The results indicate that the two contrast agents are equivalent in image quality, safety, and incidence of adverse effects.
Related Concept Videos
Imaging Studies I: Kidney, Ureter, and Bladder Studies
Imaging Studies V: Intravenous Urography and Retrograde Pyelography
Imaging Studies VI: Voiding Cystourethrography and Cystography
Imaging Studies VII: Vascular Imaging
Urodynamic Studies: Uroflowmetry
Acute Kidney Injury IV: Diagnostic Studies and Prevention

