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Automatic modeling of pectus excavatum corrective prosthesis using artificial n...
Rodrigues, Pedro L.; Rodrigues, Nuno F.; Pinho, ACM; Fonseca, Jaime C.; Correia-Pinto, Jorge; Vilaça, João L.Pectus excavatum is the most common deformity of the thorax. Pre-operative diagnosis usually includes Computed Tomography (CT) to successfully employ a thoracic prosthesis for anterior chest wall remodeling. Aiming at the elimination of radiation exposure, this paper presents a novel methodology for the replacement of CT by a 3D laser scanner (radiation-free) for prosthesis modeling. The complete elimination of...
Assessment of 3D scanners for modeling Pectus Carinatum corrective bar
Moreira, António H. J.; Fonseca, João Gomes; Rodrigues, Pedro L.; Fonseca, Jaime C.; Pinho, A.C.M.; Correia-Pinto, Jorge; F. Rodrigues, NunoPectus Carinatum (PC) is a chest deformity consisting on the anterior protrusion of the sternum and adjacent costal cartilages. Non-operative corrections, such as the orthotic compression brace, require previous information of the patient chest surface, to improve the overall brace fit. This paper focuses on the validation of the Kinect scanner for the modelling of an orthotic compression brace for the correcti...
Variations of the soft tissue thicknesses external to the ribs in Pectus Excava...
Rodrigues, Pedro L.; Direito-Santos, Bruno; Moreira, António H. J.; Fonseca, Jaime C.; Pinho, A.C.M.; F. Rodrigues, Nuno; Henriques-Coelho, TiagoBackground: 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 ...
Automatic modeling of an orthotic bracing for nonoperative correction of Pectus...
Vila, João L.; Rodrigues, Pedro L.; Moreira, António H. J.; Fonseca, Jaime C.; F. Rodrigues, NunoPectus Carinatum is a deformity of the chest wall, characterized by an anterior protrusion of the sternum, often corrected surgically due to cosmetic motivation. This work presents an alternative approach to the current open surgery option, proposing a novel technique based on a personalized orthosis. Two different processes for the orthosis’ personalization are presented. One based on a 3D laser scan of the pa...
Automatic prebent customized prosthesis for pectus excavatum minimally invasive...
Vilaça, João L.; Rodrigues, Pedro L.; Soares, Tony R.; Fonseca, Jaime C.; Pinho, António C.M.; Henriques-Coelho, Tiago; Correia-Pinto, JorgePectus excavatum is the most common deformity of the thorax. A minimally invasive surgical correction is commonly carried out to remodel the anterior chest wall by using an intrathoracic convex prosthesis in the substernal position. The process of prosthesis modeling and bending still remains an area of improvement. The authors developed a new system, i3DExcavatum, which can automatically model and bend the bar...
Finite element analysis of pectus carinatum surgical correction via a minimally...
Neves, Sara C.; Pinho, António C.M.; Fonseca, Jaime C.; F. Rodrigues, Nuno; Henriques-Coelho, Tiago; Correia-Pinto, Jorge; Vilaça, João L.Pectus carinatum (PC) is a chest deformity caused by a disproportionate growth of the costal cartilages compared to the bony thoracic skeleton, pulling the sternum towards, which leads to its protrusion. There has been a growing interest on using the ‘reversed Nuss’ technique as minimally invasive procedure for PC surgical correction. A corrective bar is introduced between the skin and the thoracic cage and pos...
Nanostructured hollow tubes based on chitosan and alginate multilayers
Silva, Joana M.; Duarte, Ana Rita C.; Custódio, Catarina; Sher, Praveen; Neto, Ana I.; Pinho, A. C. Marques de; Fonseca, Jaime C.; Reis, R. L.The design and production of structures with nanometer-sized polymer fi lms 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 hollo...
Variations of the soft tissue thicknesses external to the ribs in pectus excava...
Moreira, António H. J.; Pinto, Jorge Correia; Fonseca, Jaime C.; Vilaça, João L.; Rodrigues, Pedro L.; Pinho, A. C. Marques de; Rodrigues, Nuno F.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 ...
Pectus Excavatum postsurgical outcome based on preoperative soft body dynamics ...
Moreira, António H. J.; Rodrigues, Pedro L.; Fonseca, Jaime C.; Pinho, A. C. Marques de; Rodrigues, Nuno F.; Pinto, Jorge Correia; Vilaça, João L.Pectus excavatum is the most common congenital deformity of the anterior chest wall, in which an abnormal formation of the rib cage gives the chest a caved-in or sunken appearance. Today, the surgical correction of this deformity is carried out in children and adults through Nuss technic, which consists in the placement of a prosthetic bar under the sternum and over the ribs. Alth ough this technique has been ...
Thoracic wall reconstruction using ultrasound images to model/bend the thoracic...
Fonseca, João; Moreira, António H. J.; Rodrigues, Pedro L.; Fonseca, Jaime C.; Pinho, A. C. Marques de; Rodrigues, Nuno F.; Pinto, Jorge CorreiaPectus excavatum is the most common congenital deformity of the anterior thoracic wall. The surgical correction of such deformity, using Nuss procedure, consists in the placement of a personalized convex prosthesis into sub-sternal position to correct the deformity. The aim of this work is the CT-scan substitution by ultrasound imaging for the pre-operative diagnosis and pre-modeling of the prosthesis, in order...
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