Knowledge-Assisted Reconstruction of the Human Rib Cage and Lungs

Koehler, Christopher; Wischgoll, Thomas

doi:10.1109/mcg.2010.12

Cited by 13 publications

(10 citation statements)

References 15 publications

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“…This is similar to the findings of Gagnon et al The surgical treatments, while consistent and similar were not performed by the same surgeon in all cases and may affect the post‐operative results as described by Newton et al Even though our statistical comparisons only involved paired analyses, the lack of height‐based normalization of all subjects may affect the generalizability of the raw results. Finally, validation of our thoracic volume modeling method is not perfect; however, it is similar to that reported by Koehler and Wischgoll in 2010 …”

Section: Discussionsupporting

confidence: 86%

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Pulmonary function tests correlated with thoracic volumes in adolescent idiopathic scoliosis

Ledonio

Rosenstein

Johnston

et al. 2016

Journal Orthopaedic Research

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Scoliosis deformity has been linked with deleterious changes in the thoracic cavity that affect pulmonary function. The causal relationship between spinal deformity and pulmonary function has yet to be fully defined. It has been hypothesized that deformity correction improves pulmonary function by restoring both respiratory muscle efficiency and increasing the space available to the lungs. This research aims to correlate pulmonary function and thoracic volume before and after scoliosis correction. Retrospective correlational analysis between thoracic volume modeling from plain x-rays and pulmonary function tests was conducted. Adolescent idiopathic scoliosis patients enrolled in a multicenter database were sorted by pre-operative Total Lung Capacities (TLC) % predicted values from their Pulmonary Function Tests (PFT). Ten patients with the best and ten patients with the worst TLC values were included. Modeled thoracic volume and TLC values were compared before and 2 years after surgery. Scoliosis correction resulted in an increase in the thoracic volume for patients with the worst initial TLCs (11.7%) and those with the best initial TLCs (12.5%). The adolescents with the most severe pulmonary restriction prior to surgery strongly correlated with post-operative change in total lung capacity and thoracic volume (r 2 ¼ 0.839; p < 0.001). The mean increase in thoracic volume in this group was 373.1 cm 3 (11.7%) which correlated with a 21.2% improvement in TLC. Scoliosis correction in adolescents was found to increase thoracic volume and is strongly correlated with improved TLC in cases with severe restrictive pulmonary function, but no correlation was found in cases with normal pulmonary function. ß

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Section: Discussionsupporting

confidence: 86%

“…Finally, validation of our thoracic volume modeling method is not perfect; however, it is similar to that reported by Koehler and Wischgoll in 2010. 27…”

Section: Discussionmentioning

confidence: 99%

Pulmonary function tests correlated with thoracic volumes in adolescent idiopathic scoliosis

Ledonio

Rosenstein

Johnston

et al. 2016

Journal Orthopaedic Research

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“…Early in 1990, Caponetti and Fanelli reconstructed a bone model from two X-rays based on back-lighting projections, polygon mesh and B-spline interpolation [6]. In recent years, several works have investigated the reconstruction of bones, rib cages and lungs through statistical shape models or other prior knowledge [8,2,19,24,21,23,22]. Different to ours, these methods could not generate a 3D CT-like image.…”

Section: Related Workmentioning

confidence: 91%

X2CT-GAN: Reconstructing CT From Biplanar X-Rays With Generative Adversarial Networks

Ying

Guo

Ma³

et al. 2019

2019 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)

180

119

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Computed tomography (CT) can provide a 3D view of the patient's internal organs, facilitating disease diagnosis, but it incurs more radiation dose to a patient and a CT scanner is much more cost prohibitive than an X-ray machine too. Traditional CT reconstruction methods require hundreds of X-ray projections through a full rotational scan of the body, which cannot be performed on a typical X-ray machine. In this work, we propose to reconstruct CT from two orthogonal X-rays using the generative adversarial network (GAN) framework. A specially designed generator network is exploited to increase data dimension from 2D (X-rays) to 3D (CT), which is not addressed in previous research of GAN. A novel feature fusion method is proposed to combine information from two X-rays. The mean squared error (MSE) loss and adversarial loss are combined to train the generator, resulting in a high-quality CT volume both visually and quantitatively. Extensive experiments on a publicly available chest CT dataset demonstrate the effectiveness of the proposed method. It could be a nice enhancement of a low-cost X-ray machine to provide physicians a CT-like 3D volume in several niche applications.

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“…These models are deformed so that their projections match the silhouettes extracted in each radiograph. More recently, Koehler and Wischgoll [15] proposed a new technique that uses the semi-automatic rib detection algorithm proposed by Plourde et al [16]. First, the ribs are detected in the frontal radiograph, and the rib cage boundary is segmented interactively in the lateral view.…”

Section: Introductionmentioning

confidence: 99%

Personalized 3D reconstruction of the rib cage for clinical assessment of trunk deformities

Grenier

Parent

Cheriet

2013

Medical Engineering & Physics

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Scoliosis is a 3D deformity of the spine and rib cage. Extensive validation of 3D reconstruction methods of the spine from biplanar radiography has already been published. In this article, we propose a novel method to reconstruct the rib cage, using the same biplanar views as for the 3D reconstruction of the spine, to allow clinical assessment of whole trunk deformities. This technique uses a semi-automatic segmentation of the ribs in the postero-anterior X-ray view and an interactive segmentation of partial rib edges in the lateral view. The rib midlines are automatically extracted in 2D and reconstructed in 3D using the epipolar geometry. For the ribs not visible in the lateral view, the method predicts their 3D shape. The accuracy of the proposed method has been assessed using data obtained from a synthetic bone model as a gold standard and has also been evaluated using data of real patients with scoliotic deformities. Results show that the reconstructed ribs enable a reliable evaluation of the rib axial rotation, which will allow a 3D clinical assessment of the spine and rib cage deformities. Personalized 3D reconstruction of the rib cage for clinical assessment of trunk deformities AbstractScoliosis is a 3D deformity of the spine and rib cage. Extensive validation of 3D reconstruction methods of the spine from biplanar radiography has already been published. In this article, we propose a novel method to reconstruct the rib cage, using the same biplanar views as for the 3D reconstruction of the spine, to allow clinical assessment of whole trunk deformities. This technique uses a semi-automatic segmentation of the ribs in the postero-anterior X-ray view and an interactive segmentation of partial rib edges in the lateral view. The rib midlines are automatically extracted in 2D and reconstructed in 3D using the epipolar geometry. For the ribs not visible in the lateral view, the method predicts their 3Dshape. The accuracy of the proposed method has been assessed using data obtained from a synthetic bone model as a gold standard and has also been evaluated using data of real patients with scoliotic deformities.Results show that the reconstructed ribs enable a reliable evaluation of the rib axial rotation, which will allow a 3D clinical assessment of the spine and rib cage deformities.

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Knowledge-Assisted Reconstruction of the Human Rib Cage and Lungs

Cited by 13 publications

References 15 publications

Pulmonary function tests correlated with thoracic volumes in adolescent idiopathic scoliosis

Pulmonary function tests correlated with thoracic volumes in adolescent idiopathic scoliosis

X2CT-GAN: Reconstructing CT From Biplanar X-Rays With Generative Adversarial Networks

Personalized 3D reconstruction of the rib cage for clinical assessment of trunk deformities

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