Three-Dimensional Computer-Assisted Surgical Planning and Manufacturing in Complex Mandibular Reconstruction

Weyh, Ashleigh; Quimby, Anastasiya; Fernandes, Rui

doi:10.1016/j.cxom.2020.05.007

Cited by 11 publications

(6 citation statements)

References 24 publications

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“…Ideally, the cross section of the blood vessel can be approximately regarded as a circle, and the blood vessel is approximately tubular. When the three-dimensional blood vessel is projected on a two-dimensional plane, the blood vessel is in a ribbon shape, and the two sides of the blood vessel are approximately parallel [20][21][22].…”

Section: Discussionmentioning

confidence: 99%

Three-Dimensional Reconstruction of Two-Dimensional Cardiovascular Angiography Image Sequences by Local Threshold Segmentation Algorithm

Yu¹

2022

Scientific Programming

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The study focused on the extraction of cardiovascular two-dimensional angiography sequences and the three-dimensional reconstruction based on the local threshold segmentation algorithm. Specifically, the two-dimensional cardiovascular angiography sequence was extracted first, and Gaussian smoothing was adopted for image preprocessing. Then, optimize maximum between-class variance (OSTU) was compared with the traditional two-dimensional OSTU and fast two-dimensional OSTU and applied in the segmentation of cardiovascular angiography images. It was found that the cardiovascular structure itself was continuous, the contrast agent diffused relatively evenly in the blood vessel, and the gray level of the blood vessel was also continuous. The degree of smoothness was consistent in all directions by Gaussian smoothing, avoiding the direction deviation of the smoothened image. The operation time (0.59 s) of the optimize OSTU was significantly shorter than that of traditional OSTU (35.68 s) and fast two-dimensional OSTU (6.34 s) ( P < 0.05 ). The local threshold segmentation algorithm can realize the continuous edge extraction of blood vessels and accurately reflect the stenosis of blood vessels. The results of blood vessel diameter measurement showed that the diameter from the end of blood vessel to the intersection varied linearly from 5.5 mm to 9.0 mm. In short, the optimize OSTU demonstrated good segmentation effects and fast calculation time; it successfully extracted continuous two-dimensional cardiovascular angiography images and can be used in three-dimensional reconstruction of cardiovascular images.

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Section: Discussionmentioning

confidence: 99%

Three-Dimensional Reconstruction of Two-Dimensional Cardiovascular Angiography Image Sequences by Local Threshold Segmentation Algorithm

Yu¹

2022

Scientific Programming

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“…In the simulation, irrelevant points and noise points are removed, and the simulated postoperative threedimensional shape is trimmed. In this way, we complete the preoperative simulated surgery design [4].…”

Section: Ree-dimensional Reconstructionmentioning

confidence: 99%

Medical Image Three-Dimensional Simulation Technology in Hospital Clinical Practice

Wang

2021

Scientific Programming

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We performed three-dimensional reconstruction of facial CT scan images of patients with mandibular angle hypertrophy to explore the related factors of mandibular angle hypertrophy. At the same time, the article uses the results of three-dimensional reconstruction to simulate the clinical operation and obtain the final operation method. It was found that all patients were able to obtain the proper surgical plan from the three-dimensional reconstructed images and can get the hypertrophy factor of the mandibular angle. For this reason, we conclude that computer reconstruction simulation technology can obtain the tissue changes before and after osteotomy of mandibular angle hypertrophy and get the cause of hypertrophy. Three-dimensional reconstruction simulation technology is the best auxiliary diagnosis plan for the selection of mandibular angle surgery.

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“…In general, reconstructive mandibular surgery, mainly needed after ablative surgery in an oncological setting, is a challenging task even for the experienced clinician. Successful mandibular reconstruction requires accurate surgical planning and implementation with an appreciation of the underlying complex spatial and functional relationships of the head and neck area [ 1 ].…”

Section: Introductionmentioning

confidence: 99%

Virtual planning for mandible resection and reconstruction

Probst,

Liokatis,

Mast

et al. 2023

Innovative Surgical Sciences

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In mandibular reconstruction, computer-assisted procedures, including virtual surgical planning (VSP) and additive manufacturing (AM), have become an integral part of routine clinical practice. Especially complex cases with extensive defects after ablative tumor surgery benefit from a computer-assisted approach. Various CAD/CAM-manufactured tools such as surgical guides (guides for osteotomy, resection and predrilling) support the transition from virtual planning to surgery. Patient-specific implants (PSIs) are of particular value as they facilitate both osteosynthesis and the positioning of bone elements. Computer-based approaches may be associated with higher accuracy, efficiency, and superior patient outcomes. However, certain limitations should be considered, such as additional costs or restricted availability. In the future, automation of the planning process and augmented reality techniques, as well as MRI as a non-ionizing imaging modality, have the potential to further improve the digital workflow.

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Three-Dimensional Computer-Assisted Surgical Planning and Manufacturing in Complex Mandibular Reconstruction

Cited by 11 publications

References 24 publications

Three-Dimensional Reconstruction of Two-Dimensional Cardiovascular Angiography Image Sequences by Local Threshold Segmentation Algorithm

Three-Dimensional Reconstruction of Two-Dimensional Cardiovascular Angiography Image Sequences by Local Threshold Segmentation Algorithm

Medical Image Three-Dimensional Simulation Technology in Hospital Clinical Practice

Virtual planning for mandible resection and reconstruction

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