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https://www.readbyqxmd.com/read/29471248/using-structured-light-three-dimensional-surface-scanning-on-living-individuals-key-considerations-and-best-practice-for-forensic-medicine
#1
Awatif Shamata, Tim Thompson
Non-contact three-dimensional (3D) surface scanning methods have been applied to forensic medicine to record injuries and to mitigate ordinary photography shortcoming. However, there are no literature concerning practical guidance for 3D surface scanning of live victims. This paper aimed to investigate key 3D scanning issues of the live body to develop a series of scanning principles for future use on injured victims. The Pico Scan 3D surface scanner was used on live test subjects. The work focused on analysing the following concerns: (1) an appropriate 3D scanning technique to scan different body areas, (2) the ideal number of scans, (3) scanning approaches to access various areas of the body and (4) elimination of environmental background noise in the acquired data...
February 15, 2018: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/29471160/persistent-first-intersegmental-artery-pfia-visualized-by-three-dimensional-computed-tomography-angiography-in-chinese-population
#2
Haocong Zhang, Wei Chai, Shuang Wang, Yan Wang, Hongwei Li
BACKGROUND: Persistent first intersegmental artery (PFIA) is one of the most frequently vertebral artery (VA) variations. The presence of PFIA obviously increases the complexity and difficulty of vertebral lesion treatment. Thus, preoperative detection of PFIA is necessary to increase the successful rate of surgeries. We attempted to evaluate the utility value of three-dimension (3D) computed tomography angiography (CTA) for detecting PFIA in the north Chinese population. MATERIALS AND METHODS: Consecutive patients subjected to CTA between June 2012 and March 2014 were recruited from 5 clinical centers in the north of China...
February 19, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29457935/customized-titanium-lattice-structure-in-three-dimensional-alveolar-defect-an-initial-case-letter
#3
Marcus Seiler, Peer W Kaemmerer, Michael Peetz, Amely Gundula Hartmann
The aim of this initial case report was to provide a new protocol for the clinical application of a patient-specific titanium lattice structure (Yxoss CBR®, ReOSS, Filderstadt, Germany) for customized bone regeneration. To obtain a 3-dimensional reconstruction of a posterior mandible segment in a 61-year-old woman, a patient-specific titanium customized lattice structure was used. As graft material autogenous bone tissue mixed with xenogenic alloplastic material (Bio Oss®, Geistlich Pharma, Wolhusen, Switzerland) was obtained for reconstruction...
February 19, 2018: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29457794/recon3d-enables-a-three-dimensional-view-of-gene-variation-in-human-metabolism
#4
Elizabeth Brunk, Swagatika Sahoo, Daniel C Zielinski, Ali Altunkaya, Andreas Dräger, Nathan Mih, Francesco Gatto, Avlant Nilsson, German Andres Preciat Gonzalez, Maike Kathrin Aurich, Andreas Prlić, Anand Sastry, Anna D Danielsdottir, Almut Heinken, Alberto Noronha, Peter W Rose, Stephen K Burley, Ronan M T Fleming, Jens Nielsen, Ines Thiele, Bernhard O Palsson
Genome-scale network reconstructions have helped uncover the molecular basis of metabolism. Here we present Recon3D, a computational resource that includes three-dimensional (3D) metabolite and protein structure data and enables integrated analyses of metabolic functions in humans. We use Recon3D to functionally characterize mutations associated with disease, and identify metabolic response signatures that are caused by exposure to certain drugs. Recon3D represents the most comprehensive human metabolic network model to date, accounting for 3,288 open reading frames (representing 17% of functionally annotated human genes), 13,543 metabolic reactions involving 4,140 unique metabolites, and 12,890 protein structures...
February 19, 2018: Nature Biotechnology
https://www.readbyqxmd.com/read/29456299/atomic-force-microscopy-a-three-dimensional-reconstructive-tool-of-oral-microbiota-in-gingivitis-and-periodontitis
#5
Shyam Sunder Salavadhi, Srikanth Chintalapani, Radhika Ramachandran, Kirankumar Nagubandi, Arpita Ramisetti, Ramanarayana Boyapati
Aim: This study aims to ascertain the advantages of Atomic Force Microscopy (AFM) in the morphologic study of microorganisms and their interactions within the subgingival biofilm in patients with gingivitis and periodontitis. Settings and Design: Conducted a study on twenty patients, ten patients with severe periodontitis with probing the pocket depth of ≥8 mm, with a clinical attachment loss (CAL) of ≥6 mm CAL and ten patients with gingivitis: ≥5 mm pocket depth, and no attachment loss, was selected for the study...
July 2017: Journal of Indian Society of Periodontology
https://www.readbyqxmd.com/read/29453847/fiber-bundle-endomicroscopy-with-multi-illumination-for-three-dimensional-reflectance-image-reconstruction
#6
Yoriko Ando, Hirohito Sawahata, Takeshi Kawano, Kowa Koida, Rika Numano
Bundled fiber optics allow in vivo imaging at deep sites in a body. The intrinsic optical contrast detects detailed structures in blood vessels and organs. We developed a bundled-fiber-coupled endomicroscope, enabling stereoscopic three-dimensional (3-D) reflectance imaging with a multipositional illumination scheme. Two illumination sites were attached to obtain reflectance images with left and right illumination. Depth was estimated by the horizontal disparity between the two images under alternative illuminations and was calibrated by the targets with known depths...
February 2018: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29451799/three-dimensional-integrated-x-ray-diffraction-imaging-of-native-strain-in-multi-layered-wse2
#7
Mathew J Cherukara, Daniel S Schulman, Kiran Sasikumar, Andrew Joseph Arnold, Henry Chan, Sridhar Sadasivam, Joerg Maser, Wonsuk Cha, Saptarshi Das, Subramanian K R S Sankaranarayanan, Ross J Harder
Emerging 2-D materials such as transition metal dichalcogenides show great promise as viable alternatives for semiconductor and optoelectronic devices that progress beyond silicon. Performance variability, reliability and stochasticity in the measured transport properties represent some of the major challenges in such devices. Native strain arising from interfacial effects due to the presence of a substrate is believed to be a major contributing factor. A full three-dimensional (3-D) mapping of such native nanoscopic strain over micron length scales is highly desirable to gain a fundamental understanding of interfacial effects but has largely remained elusive...
February 16, 2018: Nano Letters
https://www.readbyqxmd.com/read/29447759/ecomorphological-analysis-of-bovid-mandibles-from-laetoli-tanzania-using-3d-geometric-morphometrics-implications-for-hominin-paleoenvironmental-reconstruction
#8
Frances L Forrest, Thomas W Plummer, Ryan L Raaum
The current study describes a new method of mandibular ecological morphology (ecomorphology). Three-dimensional geometric morphometrics (3D GM) was used to quantify mandibular shape variation between extant bovids with different feeding preferences. Landmark data were subjected to generalized Procrustes analysis (GPA), principal components analysis (PCA), and discriminant function analysis (DFA). The PCA resulted in a continuum from grazers to browsers along PC1 and DFA classified 88% or more of the modern specimens to the correct feeding category...
January 2018: Journal of Human Evolution
https://www.readbyqxmd.com/read/29443834/does-2-stage-implant-based-breast-reconstruction-allow-for-a-larger-volume-of-the-definite-implant-compared-with-1-stage-reconstruction
#9
R C Killaars, J Hommes, R R van der Hulst, H J Tielemans, V L Negenborn, A Piatkowski
INTRODUCTION: Breast reconstruction using implants is still the main breast reconstruction technique worldwide. Current debate within implant-based breast reconstruction is whether to perform a 1-stage (direct implant) or 2-stage (tissue expander/implant) reconstruction. Volume differences between a woman's native breast and changes in volume after breast reconstruction might be an important factor for a patient's choice between these types of reconstruction. Three-dimensional imaging facilitates objective breast volume estimates...
February 13, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29442350/occult-phosphaturic-mesenchymal-tumor-of-femur-cortex-causing-oncogenic-osteomalacia-diagnostic-challenges-and-clinical-outcomes
#10
Deep Dutta, Raghuvansh Kumar Pandey, Rakhee Gogoi, Nagender Solanki, Renu Madan, Anupam Mondal, Shruti Dogra, Pradeep Thapa
BACKGROUND: Tumor induced osteomalacia (TIO) are extremely rare paraneoplastic syndrome with less than 300 reported cases. This report highlights the pitfalls and challenges in diagnosing and localizing TIO in patients with refractory and resistant osteomalacia. PATIENT AND METHODS: 41- year gentleman with 4-year history of musculoskeletal weakness and pathologic fractures presented in wheelchair bound incapacitated state of 1-year duration. Investigations were significant for severe hypophosphatemia, severe phosphaturia, normal serum calcium, reduced 1,25-dihydroxy vitamin-D, elevated ALP, elevated intact parathyroid hormone (iPTH), and pseudo-fractures involving pelvis and bilateral femur...
February 14, 2018: Endokrynologia Polska
https://www.readbyqxmd.com/read/29437509/3d-printed-models-of-cleft-lip-and-palate-for-surgical-training-and-patient-education
#11
Pang-Yun Chou, Rami R Hallac, Ellen Shih, Jenny Trieu, Anjani Penumatcha, Priyanka Das, Clark A Meyer, James R Seaward, Alex A Kane
BACKGROUND: Sculpted physical models and castings of the anatomy of cleft lip and palate are used for parent, patient, and trainee education of cleft lip and palate conditions. In this study, we designed a suite of digital 3-dimensional (3D) models of cleft lip and palate anatomy with additive manufacturing techniques for patient education. METHODS: CT scans of subjects with isolated cleft palate, unilateral and bilateral cleft lip and palate, and a control were obtained...
March 2018: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/29435500/three-dimensional-reconstructions-of-lenke-1a-curves
#12
J-C Bernard, E Berthonnaud, J Deceuninck, L Journoud-Rozand, G Notin, E Chaleat-Valayer
Background: Scoliosis is a 3D deformity that can be reconstructed through 2D antero-posterior and lateral radiographs, which provide an upper view of the deformed spine as well as regional planes matching all vertebrae of elective plane for each curve. The objective of this study is to explore whether all idiopathic scoliosis classified Lenke 1A have the same 3D representation made with regional planes. Methods: All patients treated for idiopathic thoracic scoliosis during the growth period and classified Lenke 1A were included in this study conducted in the pediatric spinal orthopedic department of Centre des Massues...
2018: Scoliosis and Spinal Disorders
https://www.readbyqxmd.com/read/29433862/three-dimensionally-printed-bioactive-ceramic-scaffold-osseoconduction-across-critical-sized-mandibular-defects
#13
Christopher D Lopez, J Rodrigo Diaz-Siso, Lukasz Witek, Jonathan M Bekisz, Bruce N Cronstein, Andrea Torroni, Roberto L Flores, Eduardo D Rodriguez, Paulo G Coelho
BACKGROUND: Vascularized bone tissue transfer, commonly used to reconstruct large mandibular defects, is challenged by long operative times, extended hospital stay, donor-site morbidity, and resulting health care. 3D-printed osseoconductive tissue-engineered scaffolds may provide an alternative solution for reconstruction of significant mandibular defects. This pilot study presents a novel 3D-printed bioactive ceramic scaffold with osseoconductive properties to treat segmental mandibular defects in a rabbit model...
March 2018: Journal of Surgical Research
https://www.readbyqxmd.com/read/29433177/trabecular-anatomy-of-the-axis-vertebra-a-study-of-shaded-volume-rendered-computed-tomography-images
#14
K Venugopal Menon, Sameer B Raniga
BACKGROUND: To date, trabecular morphology studies have been conducted on thin-section computed tomography (CT) scans of cadaveric bone. Here we describe the trabecular anatomy of the axis vertebra as revealed by an innovative imaging tool. METHODS: Ten patients who underwent thin-slice CT scans for suspected cervical spine injury were prospectively subjected to shaded volume-rendered 3-dimensional reconstruction of the images. The trabecular anatomy thus depicted was recreated, and the mechanical vectors were deduced independently by a senior radiologist and spine surgeon and then matched...
February 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29431104/reep5-receptor-accessory-protein-5-acts-as-a-sarcoplasmic-reticulum-membrane-sculptor-to-modulate-cardiac-function
#15
Lei Yao, Duanyang Xie, Li Geng, Dan Shi, Jian Huang, Yufei Wu, Fei Lv, Dandan Liang, Li Li, Yi Liu, Jun Li, Yi-Han Chen
BACKGROUND: Heart failure is a complex syndrome characterized by cardiac contractile impairment with high mortality. Defective intracellular Ca2+ homeostasis is the central cause under this scenario and tightly links to ultrastructural rearrangements of sarcolemmal transverse tubules and the sarcoplasmic reticulum (SR); however, the modulators of the SR architecture remain unknown. The SR has been thought to be a specialized endoplasmic reticulum membrane system. Receptor accessory proteins (REEPs)/DP1/Yop1p are responsible for shaping high-curvature endoplasmic reticulum tubules...
February 3, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29429562/evaluation-of-the-translation-distance-of-the-glenohumeral-joint-and-the-function-of-the-rotator-cuff-on-its-translation-a-cadaveric-study
#16
Yusuke Kawano, Noboru Matsumura, Akihiko Murai, Mitsunori Tada, Morio Matsumoto, Masaya Nakamura, Takeo Nagura
PURPOSE: To evaluate the distance and position of humeral head translation during glenohumeral motion and to investigate the function of the rotator cuff in glenohumeral translation. METHODS: Using 9 cadavers, glenohumeral translation during passive pendulum motion was tracked by an optical motion capture system. Tension was applied to 5 compartments of the rotator cuff muscles, and 7 different conditions of rotator cuff dysfunction were sequentially simulated. Three-dimensional glenohumeral structure was reconstructed from the computed tomography images of the specimens, and the distance and position of glenohumeral translation were compared among the conditions...
February 8, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29428094/automated-computation-of-femoral-angles-in-dogs-from-three-dimensional-computed-tomography-reconstructions-comparison-with-manual-techniques
#17
F Longo, T Nicetto, T Banzato, G Savio, M Drigo, R Meneghello, G Concheri, M Isola
The aim of this ex vivo study was to test a novel three-dimensional (3D) automated computer-aided design (CAD) method (aCAD) for the computation of femoral angles in dogs from 3D reconstructions of computed tomography (CT) images. The repeatability and reproducibility of three manual radiography, manual CT reconstructions and the aCAD method for the measurement of three femoral angles were evaluated: (1) anatomical lateral distal femoral angle (aLDFA); (2) femoral neck angle (FNA); and (3) femoral torsion angle (FTA)...
February 2018: Veterinary Journal
https://www.readbyqxmd.com/read/29427389/in-vivo-self-gated-23-na-mri-at-7-t-using-an-oval-shaped-body-resonator
#18
Tanja Platt, Reiner Umathum, Thomas M Fiedler, Armin M Nagel, Andreas K Bitz, Florian Maier, Peter Bachert, Mark E Ladd, Mark O Wielpütz, Hans-Ulrich Kauczor, Nicolas G R Behl
PURPOSE: This work faces three challenges of sodium (23 Na) torso MRI on the way to quantitative 23 Na MRI: Development of a 23 Na radiofrequency transmit and receive coil covering a large part of the human body in width and length for 23 Na MRI at 7 T; reduction of blurring due to respiration in free-breathing 23 Na MRI using a self-gating approach; and reduction of image noise using a compressed-sensing reconstruction. METHODS: An oval-shaped birdcage resonator with a large field of view of (400 mm)3 and a homogeneous transmit and receive field distribution was designed, simulated, and implemented on a 7T MR system...
February 9, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29425925/virtual-endoscopy-based-on-3-dimensional-reconstruction-of-histopathology-features-of-endoscopic-resection-specimens
#19
Rüdiger Schmitz, Jenny Krause, Till Krech, Thomas Rösch
No abstract text is available yet for this article.
February 6, 2018: Gastroenterology
https://www.readbyqxmd.com/read/29424172/-ct-manifestation-for-excavated-type-of-rhomboid-fossa-of-the-clavicle
#20
Guan-Min Yu, Wei-Wu Yao, Zhou-Peng Ma, Han-Qing Yang
OBJECTIVE: To explore the manifestation of CT for excavated-type of rhomboid fossa of the clavicle. METHODS: Nine cases with rhomboid fossaes of the clavicle of 8 patients accepted CT and 1 case added MRI together;all 8 patients were male who aged from 17 to 70 years old with mean age of 42.5 years old;three dimensional reconstruction of all CTs were made, the distance between focus and inside end of clavicle and the size of all focus were measured respectively, then the position, shape, margin of focus were analyzed...
June 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
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