Related Experiment Video
Updated: May 23, 2026

Four-Dimensional Computed Tomography-Guided Valve Sizing for Transcatheter Pulmonary Valve Replacement
Published on: January 20, 2022
Positron Emission Tomography/Computed Tomography Scanner for Pre-Transcatheter Aortic Valve Replacement Assessment:
Giulia Passaniti1, Roosha Parikh1, George Petrossian2
1Division of Cardiovascular Imaging, St Francis Hospital and Heart Center, Roslyn, New York, USA.
Background:
Since the first transcatheter aortic valve replacement (TAVR), there has been an exponential increase in the number of patients diagnosed and treated for aortic stenosis.
Case Summary:
A 79-year-old man, with severe symptomatic aortic stenosis and a past medical history of coronary artery bypass in 2006 and percutaneous coronary stent implantation in 2016, presented to our Heart Valve Center for pre-TAVR assessment. Preprocedural computed tomography angiography was completed on a positron emission tomography (PET)/computed tomography (CT) machine. The patient underwent successful implantation of TAVR, with no evidence of leak on postoperative echocardiographic assessment on days 1 and 30.
Discussion:
Cardiac computed tomography angiography is the established gold standard for pre-TAVR evaluation in patients with no absolute contraindications; we may soon face a resource saturation problem. Therefore, we should aim to use our resources wisely.
Novelty:
A possible solution to the issue of CT scanner saturation lies in using our resources more efficiently: for example, pre-TAVR planning could be performed on PET/CT scanners, providing comparable results.
Take-Home Message:
Pre-TAVR assessment can be safely performed on a PET/CT machine.
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