An Approach to Modelling of Personalized Bone Grafts Based on Advanced Technologies

Budak, Igor; Mirković, Siniša; Šokac, Mario

doi:10.2507/ijsimm15(4)5.357

Cited by 8 publications

(2 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Two CBCT 3D image datasets were especially important for segmentation since the CBCT systems are prone to noise [33] and [34] and successful analysis of CBCT acquired images is of great importance. The two CBCT datasets contain the images of the upper maxilla, frequently used in the field of oral surgery and for other applications in dentistry, such as designing and fabrication of patientspecific bone grafts [35] where accurate segmentation and extraction of initial 3D models is extremely important. These two 3D image datasets were also important for the analysis since the bone structure of the maxilla is porous and is difficult to properly acquire its bone structure by CBCT systems.…”

Section: Methodsmentioning

confidence: 99%

Fuzzy Hybrid Method for the Reconstruction of 3D Models Based on CT/MRI Data

Šokac¹,

Vukelić²,

Jakovljević³

et al. 2019

SV-JME

View full text Add to dashboard Cite

This research proposes a hybrid method for improving the segmentation accuracy of reconstructed 3D models from computed tomography/ magnetic resonance imaging (CT/MRI) data. A semi-automatic hybrid method based on combination of Fuzzy C-Means clustering (FCM) and region growing (RG) is proposed. In this approach, FCM is used in the first stage as a preprocessing step in order to classify and improve images by assigning pixels to the clusters for which they have the maximum membership, and manual selection of the membership intensity map with the best contrast separation. Afterwards, automatic seed selection is performed for RG, for which a new parameter standard deviation (STD) of pixel intensities, is included. It is based on the selection of an initial seed inside a region with maximum value of STD. To evaluate the performance of the proposed method, it was compared to several other segmentation methods. Experimental results show that the proposed method overall provides better results compared to other methods in terms of accuracy. The average sensitivity and accuracy rates for cone-beam computed tomography CBCT

show abstract

Section: Methodsmentioning

confidence: 99%

Fuzzy Hybrid Method for the Reconstruction of 3D Models Based on CT/MRI Data

Šokac¹,

Vukelić²,

Jakovljević³

et al. 2019

SV-JME

View full text Add to dashboard Cite

show abstract

“…Currently, RE is used in many fields, for example, the machining industry. 1,2 It is also used in medicine in the process of reconstruction of the geometry of anatomical models, 3,4 design of implants 5–7 and as a rehabilitation device. 8,9 A ready-to-use model can be manufactured using subtractive methods.…”

Section: Introductionmentioning

confidence: 99%

Elaboration of the measuring procedure facilitating precision assessment of the geometry of mandible anatomical model manufactured using additive methods

Budzik

Turek

Dziubek

et al. 2019

Measurement and Control

View full text Add to dashboard Cite

This article presents a procedure for minimizing ATOS II Triple Scan system measurement errors during the verification of geometrical accuracy of the final lateral-mandibular condyle model. The process of manufacturing a template geometrically similar to that of lateral-mandibular condyle was performed on the five-axis machining centre 100 DMU MonoBlock. The next stage of the research was related to the implementation of the measurement system procedure on the template model, and the 12 anatomical models of the mandibular body-condyle were manufactured using five different additive methods. As a result of the comparison of anatomical models of the mandibular body-condyle designed in reverse engineering/computer-aided design systems and manufactured using additive methods, the average results of histograms and parameters determining the accuracy of geometry of 12 models were obtained. In the case of models manufactured using fused deposition modelling, PolyJet and selective laser sintering techniques, a unimodal distribution was observed in the same way as in the template model. The best results were obtained in the case of models manufactured using selective laser sintering techniques (standard deviation = 0.06 mm). In the case of fused deposition modelling and PolyJet, a similar value of standard deviation (about 0.07 mm) was observed, despite the fact that the layer thickness for PolyJet technology was 0.016 mm. In the case of melted and extruded modelling and ColorJet Printing technologies, there was a bimodal distribution. Through the implementation of own template and measurement method, it will be easier to estimate errors in the manufacturing of anatomical models of lateral-mandibular condyle part. As a result, medical models, surgical templates and implants will be manufactured more accurately and precisely, which will significantly reduce intraoperative complications during the surgical procedure in this area.

show abstract