Three-Dimensional Printing of Models for Preoperative Planning and Simulation of Transcatheter Valve Replacement

Schmauß, Daniel; Schmitz, Christoph; Bigdeli, Amir K.; Weber, Stefan; Gerber, Nicholas; Beiras-Fernández, Andrés; Schwarz, Florian; Becker, Christoph R.; Kupatt, Christian; Sodian, Ralf

doi:10.1016/j.athoracsur.2011.09.031

Cited by 126 publications

(63 citation statements)

References 4 publications

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“…Encouraging results were yielded when reproducing the intimal flap, with the mean difference in luminal diameter within 1 mm of error. Previous studies have highlighted that cardiac 3D printed models reduce the risk of perioperative complications because potential challenges can be anticipated through simulating procedures on the model, such as transcatheter aortic valve replacement 9, 11. 3D printed models also allow for increased procedural efficiency, as well as improved anatomical understanding and intraoperative orientation 8, 12…”

Section: Discussionmentioning

confidence: 99%

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Modelling of aortic aneurysm and aortic dissection through 3D printing

Squelch

Sun

2017

J of Medical Radiation Sci

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IntroductionThe aim of this study was to assess if the complex anatomy of aortic aneurysm and aortic dissection can be accurately reproduced from a contrast‐enhanced computed tomography (CT) scan into a three‐dimensional (3D) printed model.MethodsContrast‐enhanced cardiac CT scans from two patients were post‐processed and produced as 3D printed thoracic aorta models of aortic aneurysm and aortic dissection. The transverse diameter was measured at five anatomical landmarks for both models, compared across three stages: the original contrast‐enhanced CT images, the stereolithography (STL) format computerised model prepared for 3D printing and the contrast‐enhanced CT of the 3D printed model. For the model with aortic dissection, measurements of the true and false lumen were taken and compared at two points on the descending aorta.ResultsThree‐dimensional printed models were generated with strong and flexible plastic material with successful replication of anatomical details of aortic structures and pathologies. The mean difference in transverse vessel diameter between the contrast‐enhanced CT images before and after 3D printing was 1.0 and 1.2 mm, for the first and second models respectively (standard deviation: 1.0 mm and 0.9 mm). Additionally, for the second model, the mean luminal diameter difference between the 3D printed model and CT images was 0.5 mm.ConclusionEncouraging results were achieved with regards to reproducing 3D models depicting aortic aneurysm and aortic dissection. Variances in vessel diameter measurement outside a standard deviation of 1 mm tolerance indicate further work is required into the assessment and accuracy of 3D model reproduction.

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Section: Discussionmentioning

confidence: 99%

“…Some recent studies have shown the applications of 3D printing in cardiovascular disease, such as coronary artery disease, aortic and pulmonary venous valve disease 8, 9, 10, 11, 12. 3D printing technology also allows for the production of individualised cardiac stents to reduce the rate of in‐stent re‐stenosis 1…”

Section: Introductionmentioning

confidence: 99%

Modelling of aortic aneurysm and aortic dissection through 3D printing

Squelch

Sun

2017

J of Medical Radiation Sci

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“…As already used by some specialties (eg, orthopedic surgery, congenital cardiac surgery), 18,19 3-dimension-printed models of the aortic root may aid in assessment of valve anatomy, sizing, orientation, and other difficulties associated with SAVR. The resolution of current printers has improved and is actually higher than MDCT resolution, is cheap relative to the intervention, and can be performed rapidly (ie, within 1 hour).…”

Section: Discussionmentioning

confidence: 99%

Aortic Valve Annular Sizing

George

Guglielmetti

Bettinger

et al. 2017

Circ: Cardiovascular Imaging

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Background— Appropriate valve sizing is critical in aortic valve replacement. We hypothesized that direct intraoperative valve sizing results in smaller aortic annular diameters compared with sizing based on systolic-phase multidetector computerized tomographic (MDCT) imaging. Methods and Results— We retrospectively analyzed 78 patients undergoing surgical aortic valve replacement for severe aortic stenosis between 2012 and 2014 at our institution. Preoperative MDCT measurements of the aortic annulus served as basis for assignment to a theoretical surgical valve size, which was then (1) compared to the implanted valve size and (2) to a theoretical transcatheter aortic valve replacement valve size. To quantify the resulting differences, geometric orifice areas (GOA) were calculated. MDCT-based sizing produced the same valve size for n=34 patients (group CT-same), a larger valve with a 25% increased GOA in n=32 patients (group CT-Lg) and a smaller GOA by 22% in n=12 patients (group CT-Sm). On the basis of MDCT measurements, 41% of valves implanted were undersized. The comparison of intraoperative implanted to a theoretical transcatheter aortic valve replacement valve size resulted in GOAs 25% larger for patients in group CT-same, 40.6% larger in group CT-Lg and 14.6% larger in group CT-Sm. Conclusions— Preoperative MDCT measurements differ substantially from direct intraoperative assessment of the aortic annulus. Implanted surgical aortic valve replacement valves were smaller relative to MDCT-based sizing in 41% of patients, and the potential GOA was between 25% and 40.6% larger if patients had undergone transcatheter aortic valve replacement.

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“…[1][2][3] The concept of 3D printing was first introduced in the late 19 th century, and then further advanced in 1980's. 4 3D printing is a common term for Rapid Prototyping (RP), which is commonly used in the engineering and industry field to generate prototype models.…”

Section: Introductionmentioning

confidence: 99%

3D Printed Models of Complex Anatomy in Cardiovascular Disease

Sun

Squelch²

2015

Heart Res Open J

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Three-dimensional (3D) printing technology has undergone rapid developments over the last decades. The application of 3D printing has reached beyond the engineering field to medicine, with research showing many applications in cardiovascular disease. Due to the complexity of the cardiovascular system, application of 3D printing technology has shown potential value to benefit patients with cardiovascular disease. This mini-review provides an overview of applications of 3D printing in cardiovascular disease, with evidence of some of examples using patient-specific 3D printed models in the two common cardiovascular diseases, aortic dissection and abdominal aortic aneurysm.

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Three-Dimensional Printing of Models for Preoperative Planning and Simulation of Transcatheter Valve Replacement

Cited by 126 publications

References 4 publications

Modelling of aortic aneurysm and aortic dissection through 3D printing

Modelling of aortic aneurysm and aortic dissection through 3D printing

Aortic Valve Annular Sizing

3D Printed Models of Complex Anatomy in Cardiovascular Disease

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