Table 3

Summary of Recommendations for CT Acquisition Prior to TAVI/TAVR

RecommendationGrade of Recommendation
The imaging volume should include the aortic root, aortic arch and ilio-femoral accessStrong
Imaging of the aortic root should be performed using ECG-synchronized acquisitionStrong
Imaging of the aorta and iliofemoral vessels can be performed without ECG synchronizationStrong
Choice of acquisition mode should be tailored according to available scanner technologyStrong
CT acquisitions should focus on optimization of image quality while in accordance with ALARA principlesStrong
Thin slice collimation and reconstructed slice thickness ≤1 mm for the root and ≤1.5 mm for the peripheral vasculature should be obtained and used.Strong
In patients with an eGFR ≥30 ml/min/1.73 m2 no pre hydration is requiredWeak
In patients with eGFR <30 ml/min/1.73 m2 reduction of iodinated contrast volume and prehydration may be consideredStrong
Routine use of beta blockade is not recommended.Strong
Beta blocker use may be considered in selected cases and should be used cautiously with careful clinical oversightStrong
Use of nitroglycerin is contra-indicatedStrong

ALARA = as low as reasonably achievable; ECG = electrocardiogram; eGFR = estimated glomerular filtration rate; CT = computed tomography; TAVI = transcatheter aortic valve implantation; TAVR = transcatheter aortic valve replacement.

  • Based on level of consensus.