Slip-ring and conventional dynamic hepatic CT: contrast material and timing considerations

Area of Science:

• Radiology
• Medical Imaging

Background:

• Contrast material administration is crucial for abdominal CT examinations.
• Optimizing contrast material use balances diagnostic efficacy with patient safety and cost-effectiveness.

Purpose of the Study:

• To summarize major conclusions and recommendations for contrast material use in abdominal CT.
• To provide guidance on optimizing contrast material administration techniques and patient selection.

Main Methods:

• Review of current literature and expert opinion on contrast material use in abdominal CT.
• Synthesis of recommendations for routine and selective contrast material administration.
• Discussion of patient factors influencing contrast material choice and dosage.

Main Results:

• Unenhanced scanning is generally unnecessary with modern CT scanners and techniques.
• Dosing of contrast material can be adjusted based on patient factors like serum creatinine levels.
• Low-osmolar contrast agents offer similar enhancement patterns to high-osmolar agents, with potential cost benefits.

Conclusions:

• Routine unenhanced scanning is not recommended.
• Contrast material administration should be tailored to individual patient factors and examination techniques.
• Further research is needed on examination appropriateness, quality improvement, clinical outcomes, and cost-effectiveness of CT.