Influencing Factors of 2D Shear Wave Elastography of the Muscle - An Ex Vivo Animal Study.

Objective: To evaluate measurement confounders on 2D shear wave elastography (2D-SWE) elastography of muscle.

Materials And Methods: , porcine muscle was examined with a GE LOGIQ E9 ultrasound machine with a 9 L linear (9 MHz) and C1-6 convex probe (operating at 2.5 or 6 MHz).

Quantification of aortic valve calcification on contrast-enhanced CT of patients prior to transcatheter aortic valve implantation.

Aims: The aim of the study was to develop a formula enabling the quantification of aortic valve calcification (AVC) on contrast-enhanced CT of patients undergoing transcatheter aortic valve implantation (TAVI).

Methods And Results: Two hundred and seventeen (217) consecutive patients with severe aortic valve stenosis undergoing non-enhanced electrocardiography-gated CT angiography (NECT) and contrast-enhanced electrocardiography-gated CT angiography (CECT) prior to TAVI were subdivided into a training cohort (n=145) and a validation cohort (n=72). Aortic valve calcification (AVC) was semi-automatically segmented on CECT (AVC.

Value of CT signs and measurements as a predictor of pulmonary hypertension and mortality in symptomatic severe aortic valve stenosis.

To assess the value of computed tomography (CT) for non-invasive detection of pulmonary hypertension (PH) in patients with severe aortic stenosis undergoing transcatheter aortic valve implantation (TAVI) and to correlate CT measurements and signs with mortality after TAVI. 257 TAVI patients (median 84 years; 134 females) with both right heart catheterisation (RHC) and CT within 3 days were retrospectively analyzed. According to guidelines PH was defined as mean pulmonary artery pressure ≥25 mmHg in RHC.