Key result
The Simbionix sizing software demonstrated almost perfect agreement with 3mensio (mean ICC 0.83) and TeraRecon (mean ICC 0.81) for EVAR sizing and planning.
Why the study?
Does Simbionix PRORS provide precise EVAR sizing measurements compared to 3mensio and TeraRecon in patients with infrarenal abdominal aortic aneurysms?
Observational (n=70)
Blinded to each others' measurements and earlier measurements
No
Does Simbionix PRORS provide precise EVAR sizing measurements compared to 3mensio and TeraRecon in patients with infrarenal abdominal aortic aneurysms?
Effect estimate: mean ICC 0.83 vs 3mensio and 0.81 vs TeraRecon
The Simbionix PRORS sizing software is as precise as 3mensio and TeraRecon for EVAR sizing, though it requires significantly more preparation time.
Supports measurement equivalence among EVAR platforms; prospective studies needed to assess clinical impact.
An important determinant of successful endovascular aortic aneurysm repair is proper sizing of the dimensions of the aortic-iliac vessels. The goal of the present study was to determine the concurrent validity, a method for comparison of test scores, for EVAR sizing and planning of the recently introduced Simbionix PROcedure Rehearsal Studio (PRORS). Seven vascular specialists analyzed anonymized computed tomography angiography scans of 70 patients with an infrarenal aneurysm of the abdominal aorta, using three different sizing software packages Simbionix PRORS (Simbionix USA Corp., Cleveland, OH, USA), 3mensio (Pie Medical Imaging BV, Maastricht, The Netherlands), and TeraRecon (Aquarius, Foster City, CA, USA). The following measurements were included in the protocol: diameter 1 mm below the most distal main renal artery, diameter 15 mm below the lowest renal artery, maximum aneurysm diameter, and length from the most distal renal artery to the left iliac artery bifurcation. Averaged over the locations, the intraclass correlation coefficient is 0.83 for Simbionix versus 3mensio, 0.81 for Simbionix versus TeraRecon, and 0.86 for 3mensio versus TeraRecon. It can be concluded that the Simbionix sizing software is as precise as two other validated and commercially available software packages.
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Velu et al. (2016) conducted an observational in Infrarenal aneurysm of the abdominal aorta (n=70). Simbionix PROcedure Rehearsal Studio (PRORS) vs. 3mensio and TeraRecon was evaluated on Concurrent validity (agreement) of diameter and length measurements evaluated using intraclass correlation coefficients (ICC) (mean ICC 0.83 vs 3mensio and 0.81 vs TeraRecon). The Simbionix sizing software demonstrated almost perfect agreement with 3mensio (mean ICC 0.83) and TeraRecon (mean ICC 0.81) for EVAR sizing and planning.
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