Related Experiment Video
Updated: Aug 13, 2026

In Vivo Quantitative Assessment of Myocardial Structure, Function, Perfusion and Viability Using Cardiac Micro-computed Tomography
Published on: February 16, 2016
Effects of iodinated contrast media on blood and endothelium
Peter Aspelin1, Fulvio Stacul, Henrik S Thomsen
1Division of Radiology, Centre for Surgical sciences, Karolinska Institute/Huddinge University Hospital, Stockholm, Sweden.
Insights
Iodinated contrast media can affect blood clotting, with ionic types having a stronger anticoagulant effect. Using low-osmolar media and meticulous technique minimizes thrombotic risks in angiography.
Area of Science:
- Radiology
- Hematology
- Vascular Medicine
Background:
- Intravascular use of iodinated contrast media (ICM) is common in diagnostic and interventional radiology.
- Potential thrombotic and hematologic complications associated with ICM necessitate a thorough understanding of their effects.
Purpose of the Study:
- To evaluate the impact of ICM on blood components and endothelium.
- To develop clinical guidelines for mitigating thrombotic and hematologic complications from ICM administration.
Main Methods:
- Comprehensive review of experimental and clinical studies.
- Literature analysis and expert consensus from the European Society of Urogenital Radiology's Contrast Media Safety Committee.
Main Results:
- All ICM exhibit anticoagulant properties, more pronounced with ionic agents.
- Some in vitro/in vivo experimental findings on hematologic effects lack clinical confirmation.
- Low- or iso-osmolar contrast media are recommended for angiographic procedures.
Conclusions:
- Meticulous angiographic technique is paramount in preventing thrombotic complications.
- The use of specific drugs and devices further reduces thromboembolic risks, diminishing the relative impact of ICM effects.
Abstract:
The aim of the study was to assess the effects of iodinated contrast media on blood components and endothelium based on experimental and clinical studies and to produce clinically relevant guidelines for reducing thrombotic and hematologic complications following the intravascular use of contrast media. A report was drafted after review of the literature and discussions among the members of the Contrast Media Safety Committee of the European Society of Urogenital Radiology. The final report was produced following discussion at the 12th European Symposium on Urogenital Radiology in Ljubljana, Slovenia (2005). Experimental data indicate that all iodinated contrast media produce an anticoagulant effect and that this effect is greater with ionic contrast media. Several of the in vitro and experimental in vivo studies on haematological effects of contrast media have not been confirmed by clinical studies. Low- or iso-osmolar contrast media should be used for diagnostic and interventional angiographic procedures, including phlebography. Meticulous angiographic technique is the most important factor for reducing the thrombotic complications associated with angiographic procedures. Drugs and interventional devices that decrease the risk of thromboembolic complications during interventional procedures minimize the importance of the effects of contrast media.
Related Concept Videos
Radiological Investigation I: X-ray and CT
Imaging Studies III: Computed Tomography
Imaging Studies for Cardiovascular System V: CT
Imaging Studies VII: Vascular Imaging
Myocarditis I: Introduction
Redox Titration: Iodimetry and Iodometry