16 documents found, page 1 of 2
Functional recovery of injured cavernous nerves achieved through endogenous ner...
Casanova, Marta R.; Mota, Paulo; Vala, Helena; Nóbrega, Carmen; Morais, Alain da Silva; Silva, Catarina S.; Barros, Alexandre A.; Reis, R. L.Radical prostatectomy is a highly successful treatment for prostate cancer, among the most prevalent manifestations of the illness. Damage of the cavernous nerve (CN) during prostatectomy is the main cause of postoperative erectile dysfunction (ED). In this study, the capability of a personalized bioactive fibrous membrane to regenerate injured CN was investigated. The fibrous membrane bioactivity is conferred ...
Functional recovery of injured cavernous nerves achieved through endogenous ner...
Casanova, Marta R.; Mota, Paulo; Vala, Helena; Nóbrega, Carmen; Morais, Alain da Silva; Silva, Catarina S.; Barros, Alexandre A.; Reis, Rui L.Radical prostatectomy is a highly successful treatment for prostate cancer, among the most prevalent manifestations of the illness. Damage of the cavernous nerve (CN) during prostatectomy is the main cause of postoperative erectile dysfunction (ED). In this study, the capability of a personalized bioactive fibrous membrane to regenerate injured CN was investigated. The fibrous membrane bioactivity is conferred ...
Kidney Segmentation in Three-Dimensional Ultrasound Images using a Fast Phase-b...
Torres, Helena R.; Queirós, Sandro; Morais, Pedro; Oliveira, Bruno; Gomes-Fonseca, João; Mota, Paulo; Lima, Estevão; D'hooge, Jan; Fonseca, Jaime C.Renal ultrasound imaging is the primary imaging modality for the assessment of the kidney’s condition and is essential for diagnosis, treatment and surgical intervention planning, and follow-up. In this regard, kidney delineation in three-dimensional ultrasound images represents a relevant and challenging task in clinical practice. In this paper, a novel framework is proposed to accurately segment the kidney in...
Assessment of electromagnetic tracking systems in a surgical environment using ...
Fonseca, João; Veloso, Fernando; Queirós, Sandro; Morais, Pedro; Pinho, António; Fonseca, Jaime; Pinto, Jorge; Lima, Estevão; Vilaça, JoãoPurpose: 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 Fie...
Surface-based registration between CT and US for image-guided percutaneous rena...
Gomes-Fonseca, João; Queirós, Sandro; Morais, Pedro; Pinho, António C. M.; Fonseca, Jaime C.; Correia-Pinto, Jorge; Lima, Estevão; Vilaça, João L.Purpose: As a crucial step in accessing the kidney in several minimally invasive interventions, percutaneous renal access (PRA) practicality and safety may be improved through the fusion of computed tomography (CT) and ultrasound (US) data. This work aims to assess the potential of a surface-based registration technique and establish an optimal US acquisition protocol to fuse 2D US and CT data for image-guided ...
Comparative Study of the Efficacy and Safety Between Two Bipolar Instruments (E...
Cordeiro, Agostinho; Conde, Mariana; Torres, João; Morais, Nuno; Mota, Paulo; Rocha, Ana; Grimaldi, Giovanni; Botelho, Francisco; Nogueira, Vitor H.Introduction: Hemostasis is a central issue in laparoscopic surgery. There are no clear guidelines when it comes to the choice of what energy scissor to use. This study compares the efficiency and security between EnSeal® and LigasureTM in the sealing of arteries and veins in an ex-vivo porcine model. Methods: The instruments were compared with each other with respect to cutting speed and burst pressure (BP) af...
Accuracy and Safety of Percutaneous Core Biopsy in Management of Renal Masses: ...
Mota, Paulo; Torres, João; Morais, Nuno; Cordeiro, Agostinho; Carvalho-Dias, Emanuel; Botelho, Francisco; Oliveira, Carlos; Cerqueira-Alves, MárioIntroduction: The characterization of renal masses by biopsy before a surgical procedure is currently an option. Without this prior characterization, patients with benign renal masses may be likely to undergo unnecessary surgeries. The purpose was to determine the diagnostic accuracy and safety of renal mass biopsy. Material and Methods: Prospective uni-institutional study of 38 patients submitted to renal mass...
Smoking Cessation after Bladder Cancer Diagnosis
Mota, Paulo; Sousa, Pedro Miguel; Botelho, Francisco; Carvalho-Dias, Emanuel; Cordeiro, Agostinho; Torres, João Pimentel; Morais, Nuno; Anacleto, SaraIntroduction: Smoking is an important risk factor for the development, recurrence and progression of bladder cancer. Our aim was to analyze smoking habits after diagnosis in bladder cancer patients. Additionally, we evaluated patient knowledge about smoking as a risk factor and the urologist role in promoting abstinence.Material and Methods: A cross-sectional, observational and descriptive study was performed i...
Collecting system percutaneous access using real-time tracking sensors: first p...
L. Rodrigues, Pedro; L. Vilaça, João; Oliveira, Carlos; Cicione, Antonio; Rassweiler, Jens; Fonseca, Jaime; F. Rodrigues, Nuno; Correia-Pinto, JorgePurpose: Precise needle puncture of the renal collecting system is an essential but challenging step for successful percutaneous nephrolithotomy. We evaluated the efficiency of a new real-time electromagnetic tracking system for in vivo kidney puncture. Materials and Methods: Six anesthetized female pigs underwent ureterorenoscopy to place a catheter with an electromagnetic tracking sensor into the desired punc...
Preliminary clinical trial in percutaneous nephrolithotomy using a real-time na...
Rodrigues, Pedro L.; H. J. Moreira, António; F. Rodrigues, Nuno; Pinhod, A. C. M.; Fonseca, Jaime C.; Lima, Estevão; Vilaça, João L.Background: Precise needle puncture of renal calyces is a challenging and essential step for successful percutaneous nephrolithotomy. This work tests and evaluates, through a clinical trial, a real-time navigation system to plan and guide percutaneous kidney puncture. Methods: A novel system, entitled i3DPuncture, was developed to aid surgeons in establishing the desired puncture site and the best virtual punct...