Optimizing low contrast volume thoracic CT angiography: From the basics to the advanced

Area of Science:

• Radiology
• Cardiovascular Imaging
• Nephrology

Background:

• Contrast-enhanced CT angiography (CTA) is vital for cardiovascular assessment.
• Contrast-induced nephrotoxicity is a potential risk, especially in patients with renal disease.
• Optimal iodinated contrast media (CM) volumes for CTA are not fully established.

Purpose of the Study:

• To review methods for reducing CM volume in CTA while maintaining diagnostic image quality.
• To address kidney protection in renally impaired patients requiring CTA.
• To present techniques applicable during CM shortages for all patients.

Main Methods:

• Discusses hardware and software adjustments for CT scanners (64-slice and newer generations).
• Explores modifications in CM volume and flow rate administration.
• Focuses on techniques enabling subsecond acquisition with reduced CM volume.

Main Results:

• Reduced CM volume techniques can be adapted for various CT scanner generations.
• The goal is to decrease CM dose without compromising diagnostic yield.
• These methods offer a strategy for kidney protection and CM conservation.

Conclusions:

• Modified CTA protocols can significantly reduce CM volume.
• Diagnostic quality can be maintained with reduced CM administration.
• These techniques are valuable for both renally impaired and non-impaired patients.