Mapping of acetabular posterior wall fractures using a three-dimensional virtual reconstruction software

The development of rational accesses and methods of surgical interventions to the chest walls, muscles and vascular-nerve formations of the chest involves clarifying data on the topography of fascia, superficial and deep muscles of the chest at different stages of human ontogenesis. The purpose of the study. Identification of macromicroscopic structure and topography of fascia and chest muscles in 4-6-month human fetuses. Materials and methods. The study was performed using microscopy of a series of consecutive histological sections of 29 human embryos of 81.0-230.0 mm parietal-coccygeal length, production of three-dimensional reconstruction models and morphometry. Results and discussion. In some early fetuses, and in isolated cases in the same fetus, there is anatomical variability of the pectoralis major muscle, characterized by asymmetry of shape, size and topography of individual parts of the right and left pectoralis major muscles. The underdevelopment of the individual muscle bundles of the sternocostal part of the pectoralis major muscle, hypoplasia of the internal intervertebral muscles, aplasia of the external intercostal membrane, internal intercostal and subcostal muscles, transverse muscles of the chest is described. Conclusion. In human fetuses of 4-6 months old there is anatomical variability of the chest muscles, characterized by bilateral asymmetry, variability of shape, size and topography of both their individual parts and muscle as a whole. In early human fetuses, thoracic fascia is a rather thin structural plate, in the structure of which there is no layering. Intervertebral spaces at the level of rib cartilage are filled with internal intervertebral muscles, the fibers of which near the edges of the thorax have a vertical direction, and from the point of connection of the rib cartilage to the thorax – oblique. In the gap between the external and internal intervertebral muscles of fascia as such is not manifested, but only a small layer of loose fiber is determined, in which the vascular-nerve bundles pass. In the fetuses of 6 months, the endothorаcic fascia on the posterior wall of the chest is somewhat thickened, split into separate plates and forms fascial cases for vascular-nerve formations located near the spinal column

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Posterior Wall Fractures

Fractures of the Acetabulum ◽

10.1007/978-3-662-02325-9_5 ◽

1981 ◽

pp. 33-48

Author(s):

Emile Letournel ◽

Robert Judet

Keyword(s):

Posterior Wall ◽

Posterior Wall Fractures

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Outcomes of Posterior Wall Fractures of the Acetabulum

The Journal of Bone and Joint Surgery (American) ◽

10.2106/00004623-200706000-00003 ◽

2007 ◽

Vol 89 (6) ◽

pp. 1170-1176 ◽

Cited By ~ 22

Author(s):

Berton R. Moed ◽

Jessica C. McMichael

Keyword(s):

Posterior Wall ◽

Posterior Wall Fractures

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Understanding and Conserving Fortified and Difficult to Access Architectures through Digital Survey

Advances in Geospatial Technologies - Handbook of Research on Emerging Digital Tools for Architectural Surveying, Modeling, and Representation ◽

10.4018/978-1-4666-8379-2.ch022 ◽

2015 ◽

pp. 654-685 ◽

Cited By ~ 1

Author(s):

Mariateresa Galizia ◽

Alessandro Lo Faro ◽

Cettina Santagati

Keyword(s):

Geometric Analysis ◽

Three Dimensional ◽

Second Step ◽

Cylindrical Shape ◽

Dimensional Model ◽

Three Dimensional Model ◽

Unique Case ◽

Virtual Reconstruction ◽

A Site ◽

Digital Survey

In this paper we propose a multidisciplinary approach concerning the tower of Mongialino in Mineo (Sicily), which is a unique case in Sicily of a cylindrical tower with an inner cylindrical nucleus. The vestiges of the dungeon rise on a rock promontory that dominates the valley of Margi, a site that has great landscape and territorial value. The building is affected by important collapses and lesions, and urgently requires a safeguard intervention that requires a deep knowledge and understanding of the construction. The first step of this process is a suitable documentation and representation of the cylindrical shape and its towering position. The peculiarity of the object requires the integrated use of current technologies of surveying able to provide a metrically-accurate three-dimensional model. The second step is the critic reading of the technological, typological and material elements that constitutes the constructive apparatus of the building (masonry, ribs, ring-like vault), and the geometric analysis addressed at the virtual reconstruction of the original shape.

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15 Transverse plus Posterior Wall Fractures

Acetabular Fractures ◽

10.1055/b-0038-160883 ◽

2018 ◽

Keyword(s):

Posterior Wall ◽

Posterior Wall Fractures

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Interactive 3D Reconstruction of Pulmonary Anatomy for Preoperative Planning, Virtual Simulation, and Intraoperative Guiding in Video-Assisted Thoracoscopic Lung Surgery

Innovations Technology and Techniques in Cardiothoracic and Vascular Surgery ◽

10.1177/1556984519826321 ◽

2019 ◽

Vol 14 (1) ◽

pp. 17-26 ◽

Cited By ~ 1

Author(s):

Peyman Sardari Nia ◽

Jules R. Olsthoorn ◽

Samuel Heuts ◽

Jos G. Maessen

Keyword(s):

3D Reconstruction ◽

Preoperative Planning ◽

Three Dimensional ◽

Lung Surgery ◽

Anatomic Variations ◽

Ct Reconstruction ◽

3D Vision ◽

Video Assisted ◽

Reconstruction Software ◽

Interactive 3D

Objectives Routine imaging modalities combined with state-of-the-art reconstruction software can substantially improve preoperative planning and simplify complex procedure by enhancing the surgeon’s knowledge of the patient’s specific anatomy. The aim of the current study was to demonstrate the feasibility of interactive three-dimensional (3D) computed tomography (CT) reconstructions for preoperative planning and intraoperative guiding in video-assisted thoracoscopic lung surgery (VATS) with 3D vision. Methods Twenty-five consecutive patients referred for an anatomic pulmonary resection by a single surgeon were included. Data were collected prospectively. All patients underwent a CT angiography in the diagnostic pathway prior to referral. 3D reconstruction of the pulmonary anatomy was obtained from CT scans with dedicated software. An interactive PDF file of the 3D reconstruction with virtual resection was created, in which all the pulmonary structures could be individually selected. Furthermore, the reconstructions were used for intraoperative guiding on double monitor during VATS with 3D vision. Results In total, 26 procedures were performed for 5 benign and 21 malignant conditions. Lobectomy and segmentectomy were performed in 20 (76.9 %) and 6 (23.1%) cases, respectively. In all patients, preoperative 3D reconstruction of pulmonary vessels corresponded with the intraoperative findings. Reconstructions revealed anatomic variations in 4 (15.4%) patients. No conversion to thoracotomy or in-hospital mortality occurred. Conclusions Preoperative planning with interactive 3D CT reconstruction is a useful method to enhance the surgeon’s knowledge of the patient’s specific anatomy and to reveal anatomic variations. Intraoperative 3D guiding in VATS with 3D vision is feasible and could contribute to the safety and accuracy of anatomic resection.

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Computer virtual reconstruction of a three dimensional scene in integral imaging

2016 International Conference on Audio, Language and Image Processing (ICALIP) ◽

10.1109/icalip.2016.7846529 ◽

2016 ◽

Author(s):

Min Guo ◽

Yu-juan Si ◽

Shi-gang Wang ◽

Yuan-zhi Lyu ◽

Bo-wen Jia ◽

...

Keyword(s):

Three Dimensional ◽

Integral Imaging ◽

Virtual Reconstruction

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1186 Three-dimensional analysis of right ventricle strain in transplanted hearts and rejection: an ongoing prospective study

European Heart Journal - Cardiovascular Imaging ◽

10.1093/ehjci/jez319.685 ◽

2020 ◽

Vol 21 (Supplement_1) ◽

Author(s):

RCPLD Costa ◽

A C T Rodrigues ◽

C H Fischer ◽

E B Lira-Filho ◽

C G Monaco ◽

...

Keyword(s):

Ejection Fraction ◽

Right Ventricle ◽

Heart Transplantation ◽

Three Dimensional ◽

Posterior Wall ◽

Tissue Doppler ◽

Left Ventricular ◽

Free Wall ◽

Humoral Rejection ◽

Cellular Rejection

Abstract Background The main obstacle for success after heart transplantation is graft rejection, since is mainly asymptomatic and diagnosed by endomyocardial biopsy (EMB). New echocardiographic technologies could bring benefits to that population if subtle changes in heart mechanics were related to an incipient state of rejection. Purpose To quantify echocardiographic parameters of right ventricle strain and volumes by a semi-automated offline software and to identify the presence of any relation between those findings and the histopathologic diagnose of rejection. Methods a prospective cohort of 35 postoperative heart transplant patients who were submitted to echocardiographic evaluation up to six hours after EMB, including two-dimensional chamber quantification of left ventricular (LV) volumes and ejection fraction; conventional and tissue Doppler measurements were used for flow and functional analysis. Offline assessment of the right ventricle (RV) was made by TOMTEC software, with the acquisition of RV volumes (EDV, ESV, SV) and ejection fraction, TAPSE, FAC and three-dimensional(3D) RV free wall and septal strain using speckle tracking. EMB results were classified as positive for cellular rejection if graded as 2R (two or more interstitial infiltrate spots and myocyte damage) and positive for humoral rejection if they show any response by immunofluorescence assay. Results We studied 35 patients, aged 50 ±11, 21 male (67%), totaling 58 examinations, and then we made two analysis of EMB: one in two groups regarding cellular rejection (53 negative and 5 positive) and other regarding humoral rejection (50 negative and 8 positive). RVEDV was higher in the cellular rejection group (112,5 ± 29,6 ml) compared to those with negative biopsy (86,8 ± 24,7 mL; p = 0,01). RV stroke volume showed a similar behavior (53,5 ± 22,3 mL vs. 34,5 ± 11,3 mL; p < 0,01). Regarding humoral rejection by immunofluorescence, patients who tested positive showed lower RVEDV (79,5 ± 10,5 mL vs. 90,57 ± 27,31 mL; p = 0,02) and RVESV (45,53 ± 6,33 mL vs. 53,87 ± 19,87 mL; p = 0,01). RV free wall strain was lower in the group with positive immunofluorescence (-18,35 ± 2,79% vs. -15,34 ± 5,35%; p = 0,01). Regarding 2D measurements , interventricular septal (11,5 ± 1,06 mm vs. 10,56 ± 1,38 mm; p = 0,02) and left ventricular posterior wall (10,75 ± 1,03 mm vs. 10,04 ± 1,1 mm; p = 0,05) were also thicker in the group with positive immunofluorescence for rejection. Conclusion Both cellular and humoral rejection after heart transplantation are associated to increased 3D RV volumes whereas a decrease in RV free wall strain is only observed in humoral rejection; in patients with positive immunofluorescence results a significant increase is seen for septal and posterior wall thickness.

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