Geometric and volumetric relationship between human lumbar vertebrae and "Black‐bone" MRI‐based models. Issue 2 (15th January 2021)

• Record Type: Journal Article
• Authors: Kanawati, Andrew; Rodrigues Fernandes, Renan Jose; Gee, Aaron; Urquhart, Jennifer; Bailey, Chris; Rasoulinejad, Parham
• Is Part Of: International journal of medical robotics and computer assisted surgery. Volume 17:Issue 2(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-01-15
• Subjects: computer‐assisted -- image processing -- lumbar vertebrae -- magnetic resonance imaging -- printing -- three‐dimensional -- tomography -- x‐ray computed; Robotics in medicine -- Periodicals; Surgery -- Technological innovations -- Periodicals; Imaging systems in medicine -- Periodicals; 617.90285
• DOI: 10.1002/rcs.2220
• Languages: English
• ISSNs: 1478-5951

Abstract

Abstract: Background: This study will examine the differences between human lumbar vertebrae, three‐dimensional (3D) scans of these bones, 3D models based on 'Black‐bone' magnetic resonance imaging (MRI) scans, and 3D‐printed models. Materials and Methods: 3D mesh models were created from the "Black‐bone" MRI data from two cadaveric human spines, and then 3D printed. Four models were analysed and compared: anatomic bones, 3D‐scanned models, MRI models and 3D‐printed models. Results: There was no significant difference between when comparing the average of all measurements between all model types ( p = 0.81). The mean dice coefficient was 0.91 (SD 0.016) and the mean Hausdorff distance was 0.37 mm (SD 0.04 mm) when comparing the MRI model to the 3D‐scanned model. The mean volumes for the MRI model and the 3D scanned model were 10.42 and 10.04 ml ( p = 0.085), respectively. Conclusions: The 'Black‐bone' MRI could be a valid radiation‐free alternative to computed tomography for the 3D printing of lumbar spinal biomodels.