Renal MR and CT angiography: current concepts.

Area of Science:

• Radiology
• Medical Imaging
• Vascular Imaging

Background:

• Catheter angiography was historically used for renal artery evaluation.
• Noninvasive imaging techniques like CTA and MRA have largely superseded catheter angiography.
• Advances in imaging technology have improved the assessment of renal vasculature.

Purpose of the Study:

• To review and optimize techniques for renal MRA and CTA.
• To assess the advantages and limitations of MRA and CTA for renal vascular imaging.
• To outline current indications for renal vascular imaging, including screening for renal artery stenosis.

Main Methods:

• Review of current literature on renal CTA and MRA.
• Analysis of technical aspects for optimizing image acquisition and interpretation.
• Assessment of clinical utility and comparative effectiveness of CTA and MRA.

Main Results:

• Noninvasive CTA and MRA are established methods for renal artery assessment.
• Specific techniques can optimize image quality and diagnostic accuracy for MRA and CTA.
• Established indications exist for using these modalities, particularly for renal artery stenosis screening.

Conclusions:

• CTA and MRA are the standard of care for noninvasive renal artery evaluation.
• Understanding the nuances of MRA and CTA techniques is crucial for effective clinical application.
• Ongoing developments promise further advancements in noninvasive renal vascular imaging.