Accuracy and efficiency of computer-aided anatomical analysis using 3D visualization software based on semi-automated and automated segmentations

An, Gaoyun; Li, Hong; Zhou, Xiaobing; Yang, Qiong; Li, Meiqing; Tang, Xiangyang

doi:10.1016/j.aanat.2016.11.009

Cited by 24 publications

(17 citation statements)

References 20 publications

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“…The Higher Accuracy of Computer-aided Anatomical Measurements for Spine Our findings implied that no significant difference was found between computer-aided approach and traditional anatomical measurements, which was consistent with a previous study 17 . Similarly, Varghese et al 19 assessed the precision of linear measurements between CT-derived images and a digital caliper and suggested that there was no statistical difference between them, which also proved the validity of computer-aided analysis.…”

Section: Discussionsupporting

confidence: 91%

“…clinicians have difficulty in analyzing data directly from personal computers, which limits the role of computer-aided anatomical analysis in clinical practice. Encouragingly, the interactive medical image control system computer-aided software developed by the Materialize company (Mimics) has been reported that it could be easily installed on personal computers and perform 3D reconstruction of CT scan data 17 . Consequently, the length and angle can be measured using its associated measurement tools and yielded verified accuracies of 0.01 mm and 0.01 , respectively.…”

Section: Discussionmentioning

confidence: 99%

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Accuracy and Reliability of Computer‐aided Anatomical Measurements for Vertebral Body and Disc Based on Computed Tomography Scans

Yao

Dong

Sun

et al. 2020

Orthopaedic Surgery

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Objective To assess whether the computed tomography (CT)‐based method of three‐dimensional (3D) analysis (Mimics) was accurate and reliable for spine surgical anatomical measurements. Methods A total of 40 lumbar segments and 32 inter‐vertebral discs from eigth adult male cadavers without fractures or deformities fixed with the classical formaldehyde method were included in this research on 5 June 2017. CT scans including seven dimensions: anterior height of the vertebral body (VBHa), middle height of the vertebral body (VBHm), posterior height of the vertebral body (VBHp), width of the upper endplate (EPWu), depth of the upper endplate (EPDu), anterior height of the inter‐vertebral disc in the median sagittal plane (IDHa), and posterior height of the inter‐vertebral disc in the median sagittal plane (IDHp). They were performed based on uniform conditions (slice thickness: 0.625 mm) using a CT scanner on 8 June 2017. Afterwards, the surgical anatomical measurements were conducted with a Vernier caliper on 12 June 2017. The computer‐aided anatomical measurements were conducted by three investigators using Mimics 16.0 to perform 3D reconstructions of CT bone on 16 June 2017. Finally, the length and angle were measured with associated measurement tools, yielding a verified accuracy of 0.01 mm and 0.01°, respectively. Each measurement was repeated three times, and all anatomical data was analyzed using the statistical software and P‐value < 0.05 was considered statistically significant. Results The results showed no statistically significant difference was observed between the surgical anatomical and computer‐aided anatomical measurements (P > 0.05) for lumbar vertebra measurements, and the absolute difference between surgical and computer‐aided data were all less than 1.0 mm (for the VBHa, VBHm, VBHp, EPWu, and EPDu were 0.12, 0.03, 0.03, 0.31, and 0.03 mm, respectively). Moreover, although the absolute differences of discs was larger than those of lumbar vertebras, no significant differences were detected between the computer‐aided and surgical anatomical measurements for the IDHa, as well as IDHp in the vast majority of measurements (P = 0.543, 0.079 or 0.052 for IDHa, and P = 0.212, 0.133 or 0.042 for IDHp). In addition, excellent reliability correlation was observed between the measurements of each investigator, and the reliability coefficients in the intra‐groups were all greater than 0.9 except for IDHp (reliability coefficient = 0.892). Additionally, the reliability coefficients were greater than 0.9 for the all between‐group correlations, and a significant correlation was also observed. Furthermore, no statistically significant difference for three anatomical values was found in the computer‐assisted measurements of the lumbar bone structure (P > 0.05). Similarly, we did not observe a statistical difference in the anatomical data of the lumbar discs from the three measures (P > 0.05). Conclusions Computer‐aided anatomical measurement for spine based on CT scans presents the high accuracy and reliability for ...

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Accuracy and Reliability of Computer‐aided Anatomical Measurements for Vertebral Body and Disc Based on Computed Tomography Scans

Yao

Dong

Sun

et al. 2020

Orthopaedic Surgery

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“…Two other studies investigated the accuracy of Mimics application for three‐dimensional anatomical analysis. Using surgical anatomical measurement as baseline, An et al concluded that both the visualisation workstation provided by CT and Mimics software was found to be reliable, efficient and accurate for computer‐aided anatomical analysis. In our study, this technology was also proved to be more precise in linear anthropometry of the costal cartilage.…”

Section: Discussionmentioning

confidence: 99%

Validity and reliability of three‐dimensional costal cartilage imaging for donor‐site assessment and clinical application in microtia reconstruction patients: A prospective study of 22 cases

Mao

Jia

et al. 2019

Clinical Otolaryngology

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Objectives This study assesses the ability to reconstruct costal cartilage images by using three‐dimensional visualisation software (Mimics) based on semi‐automated segmentation algorithm and to investigate its reliability and validity with an anthropometric analysis. Design Observational prospective study. Setting Plastic surgery department of a tertiary hospital. Participants Twenty‐two microtia patients who underwent autologous ear reconstruction. Main outcome measures Preoperative thoracic computed tomography data were processed to Mimics software for three‐dimensional costal cartilage imaging. The length, width, thickness and volume of the 9th costal cartilages were calculated from these images and compared with the direct measurements (DM) obtained intraoperatively. Results The intra‐examiner reliability and inter‐examiner reliability were high in terms of all four measurements (intraclass correlation coefficients, ICC: 0.876‐0.984). There were no significant differences between image‐based anthropometry and DM in the linear measurements except for the volume (P < .05). The mean volume calculation error of Mimics was −0.08 ± 0.13 mL. No correlation was found between the anthropometric variables and the absolute errors (P > .05). Furthermore, Bland‐Altman plots were used to evaluate the agreement between the two methods. Conclusions Despite a very small error was found in volume calculation, Mimics software was accurate and reliable in linear calculation. Three‐dimensional costal cartilage imaging was found to be an efficient tool for morphological evaluation of costal cartilages. We believe that with the application of individualised cartilage models based on three‐dimensional printing, the use of customised ear framework carving will be practicable in surgical training.

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“…The CT scan around the defect and images in DICOM format were archived. Using the segmentation software (Mimics: Interactive Medical Image Control System, Version 19.0, Materialize Company, Belgium) installed on a personal computer, based on thresholding and/or the semi‐automated segmentation method, the CT images were processed as 3D visualization …”

Section: Methodsmentioning

confidence: 99%

Different effects of Wnt/β‐catenin activation and parathyroid hormone on diaphyseal and metaphyseal in the early phase of femur bone healing of mice

Liu

Chen

et al. 2019

Clin Exp Pharma Physio

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Summary Parathyroid hormone (PTH) and agents related to the manipulation of Wnt/β‐catenin signalling are two promising anabolic anti‐osteoporotic therapies that have been shown to promote the healing of bone fractures. Now, it is widely accepted that cortical bone and trabecular bone are two different compartments, and should be treated as separate compartments in pathological processes, such as fracture healing. It is currently unknown whether PTH and the activation of β‐catenin signalling would demonstrate different effects on cortical bone and trabecular bone healing. In the current study, single 0.6‐mm cortex holes were made in the femur metaphysis and diaphysis of mice, and then, PTH application and β‐catenin activation were used to observe the promoting effect on bone healing. The effects of β‐catenin and PTH signalling on fracture healing were observed by X‐ray and CT at 3, 6, and 14 days after fracture, and the levels of β‐catenin were detected by RT‐PCR assay, and the number of specific antigen‐positive cells of BRDU, OCN, RUNX2 was counted by immunohistochemical staining. While β‐catenin activation and PTH were found to demonstrate similar effects on accelerating metaphyseal bone healing, activation of β‐catenin showed a more striking effect than PTH on promoting diaphyseal bone healing. These findings might be helpful for selecting proper medication to accelerate fracture healing of different bone compartments.

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Accuracy and efficiency of computer-aided anatomical analysis using 3D visualization software based on semi-automated and automated segmentations

Cited by 24 publications

References 20 publications

Accuracy and Reliability of Computer‐aided Anatomical Measurements for Vertebral Body and Disc Based on Computed Tomography Scans

Accuracy and Reliability of Computer‐aided Anatomical Measurements for Vertebral Body and Disc Based on Computed Tomography Scans

Validity and reliability of three‐dimensional costal cartilage imaging for donor‐site assessment and clinical application in microtia reconstruction patients: A prospective study of 22 cases

Different effects of Wnt/β‐catenin activation and parathyroid hormone on diaphyseal and metaphyseal in the early phase of femur bone healing of mice

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