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Gomes-Fonseca J, Veloso F, Queirós S, Morais P, Pinho ACM, Fonseca JC, Correia-Pinto J, Lima E, Vilaça JL. Technical Note: Assessment of electromagnetic tracking systems in a surgical environment using ultrasonography and ureteroscopy instruments for percutaneous renal access. Med Phys 2019; 47:19-26. [PMID: 31661566 DOI: 10.1002/mp.13879] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 10/01/2019] [Accepted: 10/21/2019] [Indexed: 12/19/2022] Open
Abstract
PURPOSE Electromagnetic tracking systems (EMTSs) have been proposed to assist the percutaneous renal access (PRA) during minimally invasive interventions to the renal system. However, the influence of other surgical instruments widely used during PRA (like ureteroscopy and ultrasound equipment) in the EMTS performance is not completely known. This work performs this assessment for two EMTSs [Aurora® Planar Field Generator (PFG); Aurora® Tabletop Field Generator (TTFG)]. METHODS An assessment platform, composed by a scaffold with specific supports to attach the surgical instruments and a plate phantom with multiple levels to precisely translate or rotate the surgical instruments, was developed. The median accuracy and precision in terms of position and orientation were estimated for the PFG and TTFG in a surgical environment using this platform. Then, the influence of different surgical instruments (alone or together), namely analogic flexible ureterorenoscope (AUR), digital flexible ureterorenoscope (DUR), two-dimensional (2D) ultrasound (US) probe, and four-dimensional (4D) mechanical US probe, was assessed for both EMTSs by coupling the instruments to 5-DOF and 6-DOF sensors. RESULTS Overall, the median positional and orientation accuracies in the surgical environment were 0.85 mm and 0.42° for PFG, and 0.72 mm and 0.39° for TTFG, while precisions were 0.10 mm and 0.03° for PFG, and 0.20 mm and 0.12° for TTFG, respectively. No significant differences were found for accuracy between EMTSs. However, PFG showed a tendency for higher precision than TTFG. AUR, DUR, and 2D US probe did not influence the accuracy and precision of both EMTSs. In opposition, the 4D probe distorted the signal near the attached sensor, making readings unreliable. CONCLUSIONS Ureteroscopy- and ultrasonography-assisted PRA based on EMTS guidance are feasible with the tested AUR or DUR together with the 2D probe. More studies must be performed to evaluate the probes and ureterorenoscopes' influence before their use in PRA based on EMTS guidance.
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Affiliation(s)
- João Gomes-Fonseca
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,Government Associate Laboratory, ICVS/3B's-PT, Braga/Guimarães, Portugal
| | - Fernando Veloso
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,Government Associate Laboratory, ICVS/3B's-PT, Braga/Guimarães, Portugal.,Department of Mechanical Engineering, School of Engineering, University of Minho, Guimarães, Portugal.,2Ai, Polytechnic Institute of Cávado and Ave, Barcelos, Portugal
| | - Sandro Queirós
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,Government Associate Laboratory, ICVS/3B's-PT, Braga/Guimarães, Portugal.,2Ai, Polytechnic Institute of Cávado and Ave, Barcelos, Portugal
| | - Pedro Morais
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,Government Associate Laboratory, ICVS/3B's-PT, Braga/Guimarães, Portugal.,2Ai, Polytechnic Institute of Cávado and Ave, Barcelos, Portugal
| | - António C M Pinho
- Department of Mechanical Engineering, School of Engineering, University of Minho, Guimarães, Portugal
| | - Jaime C Fonseca
- Algoritmi Center, School of Engineering, University of Minho, Guimarães, Portugal.,Department of Industrial Electronics, School of Engineering, University of Minho, Guimarães, Portugal
| | - Jorge Correia-Pinto
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,Government Associate Laboratory, ICVS/3B's-PT, Braga/Guimarães, Portugal.,Department of Pediatric Surgery, Hospital of Braga, Braga, Portugal
| | - Estêvão Lima
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,Government Associate Laboratory, ICVS/3B's-PT, Braga/Guimarães, Portugal.,Deparment of Urology, Hospital of Braga, Braga, Portugal
| | - João L Vilaça
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,Government Associate Laboratory, ICVS/3B's-PT, Braga/Guimarães, Portugal.,2Ai, Polytechnic Institute of Cávado and Ave, Barcelos, Portugal
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Gomes-Fonseca J, Queirós S, Morais P, Pinho ACM, Fonseca JC, Correia-Pinto J, Lima E, Vilaça JL. Surface-based registration between CT and US for image-guided percutaneous renal access - A feasibility study. Med Phys 2019; 46:1115-1126. [DOI: 10.1002/mp.13369] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 12/13/2018] [Accepted: 12/19/2018] [Indexed: 12/30/2022] Open
Affiliation(s)
- João Gomes-Fonseca
- Life and Health Sciences Research Institute (ICVS); School of Medicine; University of Minho; Braga Portugal
- ICVS/3B's-PT; Government Associate Laboratory; Braga/Guimarães 4710-057 Portugal
| | - Sandro Queirós
- Life and Health Sciences Research Institute (ICVS); School of Medicine; University of Minho; Braga Portugal
- ICVS/3B's-PT; Government Associate Laboratory; Braga/Guimarães 4710-057 Portugal
- 2Ai; Polytechnic Institute of Cávado and Ave; Barcelos Portugal
| | - Pedro Morais
- Life and Health Sciences Research Institute (ICVS); School of Medicine; University of Minho; Braga Portugal
- ICVS/3B's-PT; Government Associate Laboratory; Braga/Guimarães 4710-057 Portugal
- 2Ai; Polytechnic Institute of Cávado and Ave; Barcelos Portugal
| | - António C. M. Pinho
- Department of Mechanical Engineering; School of Engineering; University of Minho; Guimarães Portugal
| | - Jaime C. Fonseca
- Algoritmi Center; School of Engineering; University of Minho; Guimarães Portugal
- Department of Industrial Electronics; School of Engineering; University of Minho; Guimarães Portugal
| | - Jorge Correia-Pinto
- Life and Health Sciences Research Institute (ICVS); School of Medicine; University of Minho; Braga Portugal
- ICVS/3B's-PT; Government Associate Laboratory; Braga/Guimarães 4710-057 Portugal
- Department of Pediatric Surgery; Hospital of Braga; Braga Portugal
| | - Estêvão Lima
- Life and Health Sciences Research Institute (ICVS); School of Medicine; University of Minho; Braga Portugal
- ICVS/3B's-PT; Government Associate Laboratory; Braga/Guimarães 4710-057 Portugal
- Deparment of Urology; Hospital of Braga; Braga Portugal
| | - João L. Vilaça
- Life and Health Sciences Research Institute (ICVS); School of Medicine; University of Minho; Braga Portugal
- ICVS/3B's-PT; Government Associate Laboratory; Braga/Guimarães 4710-057 Portugal
- 2Ai; Polytechnic Institute of Cávado and Ave; Barcelos Portugal
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Gomes-Fonseca J, Vilaça JL, Henriques-Coelho T, Direito-Santos B, Pinho ACM, Fonseca JC, Correia-Pinto J. A new methodology for assessment of pectus excavatum correction after bar removal in Nuss procedure: Preliminary study. J Pediatr Surg 2017; 52:1089-1097. [PMID: 28094014 DOI: 10.1016/j.jpedsurg.2016.12.029] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 12/30/2016] [Accepted: 12/31/2016] [Indexed: 11/17/2022]
Abstract
PURPOSE The objective is to present a new methodology to assess quantitatively the impact of bar removal on the anterior chest wall, among patients with pectus excavatum who have undergone the Nuss procedure, and present a preliminary study using this methodology. METHODS We propose to acquire, for each patient, the surface of the anterior chest wall using a three-dimensional laser scanner at subsequent time points (short term: before and after surgery; long term: follow-up visit, 6months, and 12months after surgery). After surfaces postprocessing, the changes are assessed by overlapping and measuring the distances between surfaces. In this preliminary study, three time points were acquired and two assessments were performed: before vs after bar removal (early) and before vs 2-8weeks after bar removal (interim). In 21 patients, the signed distances and volumes between surfaces were computed and the data analysis was performed. RESULTS This methodology revealed useful for monitoring changes in the anterior chest wall. On average, the mean, maximum, and volume variations, in the early assessment, were -0.1±0.1cm, -0.6±0.2cm, and 47.8±22.2cm3, respectively; and, in the interim assessment, were -0.5±0.2cm, -1.3±0.4cm, and 122.1±47.3cm3, respectively (p<0.05). Data analysis revealed that the time the bar was in situ was inversely and significantly correlated with postretraction and was a relevant predictor of its decrease following surgery (p<0.05). Additionally, gender and age suggested influencing the outcome. CONCLUSIONS This methodology is novel, objective and safe, helping on follow-up of pectus excavatum patients. Moreover, the preliminary study suggests that the time the bar was in situ may be the main determinant of the anterior chest wall retraction following bar removal. Further studies should continue to corroborate and reinforce the preliminary findings, by increasing the sample size and performing long-term assessments. LEVELS OF EVIDENCE III.
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Affiliation(s)
- João Gomes-Fonseca
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal; ICVS/3B's-PT, Government Associate Laboratory, Braga/Guimarães, Portugal.
| | - João L Vilaça
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal; ICVS/3B's-PT, Government Associate Laboratory, Braga/Guimarães, Portugal; DIGARC-Technology School, Polytechnic Institute of Cávado and Ave, Barcelos, Portugal
| | - Tiago Henriques-Coelho
- Department of Pediatric Surgery, Centro Hospitalar de São João, Porto, Portugal; Department of Pediatrics, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Bruno Direito-Santos
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal; ICVS/3B's-PT, Government Associate Laboratory, Braga/Guimarães, Portugal; Department of Orthopedics, Hospital de Braga, Braga, Portugal
| | - António C M Pinho
- Department of Mechanical Engineering, School of Engineering, University of Minho, Guimarães, Portugal
| | - Jaime C Fonseca
- Department of Industrial Electronics, School of Engineering, University of Minho, Guimarães, Portugal
| | - Jorge Correia-Pinto
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal; ICVS/3B's-PT, Government Associate Laboratory, Braga/Guimarães, Portugal; Department of Pediatric Surgery, Hospital de Braga, Braga, Portugal
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Moreira AHJ, Rodrigues NF, Pinho ACM, Fonseca JC, Vilaça JL. Accuracy Comparison of Implant Impression Techniques: A Systematic Review. Clin Implant Dent Relat Res 2015; 17 Suppl 2:e751-64. [DOI: 10.1111/cid.12310] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- António H. J. Moreira
- ICVS/3B's - PT Government Associate Laboratory; University of Minho; Braga Portugal
- Algoritmi Center, School of Engineering; University of Minho; Guimarães Portugal
- DIGARC - Polytechnic Institute of Cávado and Ave; Barcelos Portugal
| | - Nuno F. Rodrigues
- ICVS/3B's - PT Government Associate Laboratory; University of Minho; Braga Portugal
- Algoritmi Center, School of Engineering; University of Minho; Guimarães Portugal
- DIGARC - Polytechnic Institute of Cávado and Ave; Barcelos Portugal
| | - António C. M. Pinho
- Mechanical & Materials Technologies Centre, School of Engineering; University of Minho; Guimarães Portugal
| | - Jaime C. Fonseca
- Algoritmi Center, School of Engineering; University of Minho; Guimarães Portugal
| | - João L. Vilaça
- ICVS/3B's - PT Government Associate Laboratory; University of Minho; Braga Portugal
- DIGARC - Polytechnic Institute of Cávado and Ave; Barcelos Portugal
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Araújo ÂRG, Peixinho N, Pinho ACM, Claro JCP. Quasi-static and dynamic properties of the intervertebral disc: experimental study and model parameter determination for the porcine lumbar motion segment. Acta Bioeng Biomech 2015; 17:59-66. [PMID: 26900017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
PURPOSE The study of axial loading is essential to determine the properties of intervertebral disc. The objectives of this work are (1) to quantify the mechanical properties of porcine lumbar intervertebral discs under static and cyclic compressive loading, and (2) to determine the parameters of a five-parameter rheological model for porcine and compare them with those obtained for human lumbar intervertebral discs. METHODS Thus, the porcine lumbar motion segments were subjected to quasi-static and dynamic compression tests. The quasi-static tests were used to obtain the static stiffness coefficient at different strain rates, while the data from the cyclic compressive tests were used to both determine the dynamic stiffness coefficient and to be fitted in a 5-parameter model, in order to simulate the creep response of the porcine intervertebral discs. RESULTS The results demonstrated that dynamic stiffness coefficient of porcine discs is between four and ten times higher than the static stiffness coefficient, depending on load applied. The parameters of the rheological model suggested a low permeability of nucleus and endplate during the fast response of porcine discs. In addition, the fast response in terms of displacement is four times higher than those documented for human discs. CONCLUSIONS This study revealed that care must be taken on the comparison between porcine and human discs, since they present different behaviour under quasi-static and dynamic compressive loading.
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Affiliation(s)
- Ângelo R G Araújo
- University of Minho, Departamento de Engenharia Mecânica, Guimarães, Portugal
| | - Nuno Peixinho
- University of Minho, Departamento de Engenharia Mecânica, Guimarães, Portugal
| | - António C M Pinho
- University of Minho, Departamento de Engenharia Mecânica, Guimarães, Portugal
| | - J C P Claro
- University of Minho, Departamento de Engenharia Mecânica, Guimarães, Portugal
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Rodrigues PL, Rodrigues NF, Pinho ACM, Fonseca JC, Correia-Pinto J, Vilaça JL. Automatic modeling of pectus excavatum corrective prosthesis using artificial neural networks. Med Eng Phys 2014; 36:1338-45. [DOI: 10.1016/j.medengphy.2014.06.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 06/20/2014] [Accepted: 06/28/2014] [Indexed: 11/26/2022]
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Silva JM, Duarte ARC, Custódio CA, Sher P, Neto AI, Pinho ACM, Fonseca J, Reis RL, Mano JF. Nanostructured hollow tubes based on chitosan and alginate multilayers. Adv Healthc Mater 2014; 3:433-40. [PMID: 23983205 DOI: 10.1002/adhm.201300265] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 07/30/2013] [Indexed: 12/28/2022]
Abstract
The design and production of structures with nanometer-sized polymer films based on layer-by-layer (LbL) are of particular interest for tissue engineering since they allow the precise control of physical and biochemical cues of implantable devices. In this work, a method is developed for the preparation of nanostructured hollow multilayers tubes combining LbL and template leaching. The aim is to produce hollow tubes based on polyelectrolyte multilayer films with tuned physical-chemical properties and study their effects on cell behavior. The final tubular structures are characterized by differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), microscopy, swelling, and mechanical tests, including dynamic mechanical analysis (DMA) in physiological simulated conditions. It is found that more robust films could be produced upon chemical cross-linking with genipin. In particular, the mechanical properties confirms the viscoelastic properties and a storage and young modulus about two times higher. The water uptake decreases from about 390% to 110% after the cross-linking. The biological performance is assessed in terms of cell adhesion, viability, and proliferation. The results obtained with the cross-linked tubes demonstrate that these are more suitable structures for cell adhesion and spreading. The results suggest the potential of these structures to boost the development of innovative tubular structures for tissue engineering approaches.
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Affiliation(s)
- Joana M. Silva
- 3Bs Research Group-Biomaterials; Biodegradables, and Biomimetics; AvePark, Zona Industrial, da Gandra S. Claúdio do Barco 4806-909 Caldas das Taipas - Guimarães Portugal
- ICVS/3B's - PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Ana Rita C. Duarte
- 3Bs Research Group-Biomaterials; Biodegradables, and Biomimetics; AvePark, Zona Industrial, da Gandra S. Claúdio do Barco 4806-909 Caldas das Taipas - Guimarães Portugal
- ICVS/3B's - PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Catarina A. Custódio
- 3Bs Research Group-Biomaterials; Biodegradables, and Biomimetics; AvePark, Zona Industrial, da Gandra S. Claúdio do Barco 4806-909 Caldas das Taipas - Guimarães Portugal
- ICVS/3B's - PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Praveen Sher
- 3Bs Research Group-Biomaterials; Biodegradables, and Biomimetics; AvePark, Zona Industrial, da Gandra S. Claúdio do Barco 4806-909 Caldas das Taipas - Guimarães Portugal
- ICVS/3B's - PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - Ana I. Neto
- 3Bs Research Group-Biomaterials; Biodegradables, and Biomimetics; AvePark, Zona Industrial, da Gandra S. Claúdio do Barco 4806-909 Caldas das Taipas - Guimarães Portugal
- ICVS/3B's - PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - António C. M. Pinho
- University of Minho, Department of Mechanical Engineering; Campus de Azurém Guimarães Portugal
| | - Jaime Fonseca
- University of Minho, Department of Industrial Electronics; Campus de Azurém Guimarães Portugal
| | - Rui L. Reis
- 3Bs Research Group-Biomaterials; Biodegradables, and Biomimetics; AvePark, Zona Industrial, da Gandra S. Claúdio do Barco 4806-909 Caldas das Taipas - Guimarães Portugal
- ICVS/3B's - PT Government Associate Laboratory; Braga/Guimarães Portugal
| | - João F. Mano
- 3Bs Research Group-Biomaterials; Biodegradables, and Biomimetics; AvePark, Zona Industrial, da Gandra S. Claúdio do Barco 4806-909 Caldas das Taipas - Guimarães Portugal
- ICVS/3B's - PT Government Associate Laboratory; Braga/Guimarães Portugal
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Rodrigues PL, Direito-Santos B, Moreira AHJ, Fonseca JC, Pinho ACM, Rodrigues NF, Henriques-Coelho T, Correia-Pinto J, Vilaça JL. Variations of the soft tissue thicknesses external to the ribs in pectus excavatum patients. J Pediatr Surg 2013; 48:1878-86. [PMID: 24074661 DOI: 10.1016/j.jpedsurg.2013.01.047] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 01/02/2013] [Accepted: 01/20/2013] [Indexed: 11/30/2022]
Abstract
BACKGROUND Surgical repair of pectus excavatum (PE) has become more popular due to improvements in the minimally invasive Nuss procedure. The pre-surgical assessment of PE patients requires Computerized Tomography (CT), as the malformation characteristics vary from patient to patient. OBJECTIVE This work aims to characterize soft tissue thickness (STT) external to the ribs among PE patients. It also presents a comparative analysis between the anterior chest wall surface before and after surgical correction. METHODS Through surrounding tissue segmentation in CT data, STT values were calculated at different lines along the thoracic wall, with a reference point in the intersection of coronal and median planes. The comparative analysis between the two 3D anterior chest surfaces sets a surgical correction influence area (SCIA) and a volume of interest (VOI) based on image processing algorithms, 3D surface algorithms, and registration methods. RESULTS There are always variations between left and right side STTs (2.54 ± 2.05 mm and 2.95 ± 2.97 mm for female and male patients, respectively). STTs are dependent on age, sex, and body mass index of each patient. On female patients, breast tissue induces additional errors in bar manual conception. The distances starting at the deformity's largest depression point at the SCIA are similar in all directions. Some diverging measures and outliers were found, being difficult to find similar characteristics between them, especially in asymmetric patients. CONCLUSION The Nuss procedure metal bar must be modeled according to each patient's special characteristics. The studied relationships between STT and chest surface could represent a step forward to eliminate the CT scan from PE pre-surgical evaluation.
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Affiliation(s)
- Pedro L Rodrigues
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal; DIGARC-Polytechnic Institute of Cávado and Ave, Barcelos, Portugal.
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Costa RR, Neto AI, Calgeris I, Correia CR, Pinho ACM, Fonseca J, Öner ET, Mano JF. Adhesive nanostructured multilayer films using a bacterial exopolysaccharide for biomedical applications. J Mater Chem B 2013; 1:2367-2374. [DOI: 10.1039/c3tb20137f] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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