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[Carbon dioxide--contrast medium for digital subtraction angiography]
Fortschritte Der Medizin
|March 20, 1993
Summary
Carbon dioxide (CO2) can visualize vessels in angiography, but it may cause incomplete contrast and pain. Further research is needed for this alternative contrast agent.
Area of Science:
- Vascular imaging
- Medical diagnostics
Background:
- Conventional contrast media pose challenges for patients with renal insufficiency, hyperthyroidism, or allergies.
- There is a need for alternative contrast agents in vascular studies.
Purpose of the Study:
- To investigate the feasibility of using carbon dioxide (CO2) as a gaseous contrast medium for vascular visualization.
- To compare CO2 angiography with conventional iodine-based contrast media in terms of results, handling, and toleration.
Main Methods:
- Simultaneous pelvic and leg angiography (DSA) was performed on 30 patients using both conventional iodine-containing media and CO2.
- Two additional patients underwent percutaneous transluminal angioplasty and stent implantation under CO2 guidance.
Main Results:
- CO2 angiography yielded comparable findings to conventional DSA.
- However, CO2 examinations frequently showed incomplete vessel contrasting and contrast medium column interruption, hindering assessment.
- Two patients experienced severe abdominal pain during CO2 angiography, leading to study abandonment.
Conclusions:
- Carbon dioxide is a potential alternative contrast agent for vascular imaging.
- Limitations include potential for incomplete opacification and patient discomfort.
- Further studies are warranted to optimize CO2 angiography techniques and patient management.