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xlomafota13 shared this article with you from Inoreader Cover Image Via Head & Neck The cover image is based on the Education A novel method to reconstruct right recurrent laryngeal nerve by transforming into nonrecurrent laryngeal nerve: The end-to-free vagal laryngeal branch end anastomosis by Yu-Long Wang et al., https://doi.org/10.1002/hed.26942. View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Facial landmark‐guided surface matching for image‐to‐patient registration with an RGB‐D camera

xlomafota13 shared this article with you from Inoreader Facial landmark‐guided surface matching for image‐to‐patient registration with an RGB‐D camera Via The International Journal of Medical Robotics and Computer Assisted Surgery Abstract Background Fiducial marker-based image-to-patient registration is the most common way in image-guided neurosurgery, which is labour-intensive, time consuming, invasive and error prone. Methods We proposed a method of facial landmark-guided surface matching for image-to-patient registration using an RGB-D camera. Five facial landmarks are localised from preoperative magnetic resonance (MR) images using deep learning and RGB image using Adaboost with multi-scale block local binary patterns, respectively. The registration of two facial surface point clouds derived from MR images and RGB-D data is initialised by aligning these five landmarks and further refined by weighted iterative closest point algorithm. Results Phantom experiment results show the target registration error is less than 3 mm when the distance from the camera to the phantom is less than 1000 mm. The registration takes less than 10 s. Conclusions The proposed method is comparable to the state-of-the-arts in terms of the accuracy yet more time-saving and non-invasive. View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Model‐Free Robust Adaptive Integral Sliding Mode Impedance Control of Knee‐Ankle‐Toe Active Transfemoral Prosthesis

xlomafota13 shared this article with you from Inoreader Model‐Free Robust Adaptive Integral Sliding Mode Impedance Control of Knee‐Ankle‐Toe Active Transfemoral Prosthesis Via The International Journal of Medical Robotics and Computer Assisted Surgery Abstract Background Wearing appropriate active prosthesis is the guarantee of daily life for amputees. Normally the controller of the traditional active transfemoral prosthesis is designed based on the mathematical model. The modeling error and the external interference will reduce the control accuracy of the system and make the prosthesis unable to operate in the desired trajectory. Methods Firstly, combined with time delay estimation (TDE),a model-free robust integral sliding mode impedance controller is designed. This method not only suppress the impedance error, but also eliminate the nonlinear relationship and disturbance in the dynamic model. Secondly, an adaptive law is proposed to update the controller gain, which provide stable control effect. Thirdly, the stability of prosthesis closed-loop system is proved by Lyapunov stability theory. Finally, the motor torque is used to drive each joint, and Matlab/Simscape is used to verify the prosthesis control system. Results From the result of the simulation experiment, the control method has a good tracking effect on each joint. The RMSE and MAE of each joint's angle tracking error are 0.6123°, 1.9976°, 0.5574° and 0.2635°, 1.8175°, 0.4796°. Compared with the controller without adaptive gain and impedance control, the control effect is improved, and the plantar pressure of amputees is closer to the sound side. Conclusions Comparing the results of different controllers, the adaptive integral sliding mode impedance controller with TDE (AISMIC-TDE) can better track the expected angles of each joint. The gait is more normal. The walking performance of the prosthesis wearers is improved. This article is protected by copyright. All rights reserved. View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Long-term outcome of patients treated with antithyroid drugs, radioactive iodine or surgery for persistent or relapsed Graves' disease

xlomafota13 shared this article with you from Inoreader Long-term outcome of patients treated with antithyroid drugs, radioactive iodine or surgery for persistent or relapsed Graves' disease Via radioactive iodine Br J Surg. 2022 Feb 7:znab474. doi: 10.1093/bjs/znab474. Online ahead of print. ABSTRACT BACKGROUND: The aim of this study was to compare long-term mortality, morbidity, and cumulative healthcare costs between antithyroid drugs, radioactive iodine, and surgical treatment for patients with persistent or relapsed Graves' disease. METHODS: Data on patients with persistent or relapsed Graves' disease between 2006 and 2018 were retrieved from the Hong Kong Hospital Authority. Haza rd ratios (HRs) estimated by Cox proportional hazards regression models were used to compare the risks of all-cause mortality, cardiovascular disease, atrial fibrillation, psychological disease, Graves' ophthalmopathy, and cancer across treatment groups. The 10-year healthcare cost and change in co-morbidity status were also estimated. RESULTS: Over a median follow-up of 79 months (22 636 person-years), a total of 3443 patients (antithyroid drug 2294, radioactive iodine 755, surgery 394) were analysed. Compared with antithyroid drug treatment, surgery was associated with significantly lower risks of all-cause mortality (HR 0.40, 95 per cent c.i. 0.36 to 0.45), cardiovascular disease (HR 0.54, 0.48 to 0.60), atrial fibrillation (HR 0.11, 0.09 to 0.14), psychological disease (HR 0.85, 0.79 to 0.92), Graves' ophthalmopathy (HR 0.09, 0.08 to 0.10), and cancer (HR 0.56, 0.50 to 0.63). Patients who underwent surgery also had a lower risk of all outcome events than those in the radio active iodine group. The 10-year direct cumulative healthcare cost was €14 754 for surgery compared with €17 390 for antithyroid drugs, and €17 918 for the radioactive iodine group. CONCLUSION: Patients who underwent surgery for persistent or relapsed Graves' disease had lower risks of all-cause mortality and analysed morbidities. The 10-year cumulative healthcare cost in the surgery group was lowest among the three treatment alternatives. PMID:35136950 | DOI:10.1093/bjs/znab474 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.

Prognostic role of ISR-4 in the survival of patients with pancreatic cancer

xlomafota13 shared this article with you from Inoreader Prognostic role of ISR-4 in the survival of patients with pancreatic cancer Via Cellular and Molecular Biology Histol Histopathol. 2022 Feb 9:18432. doi: 10.14670/HH-18-432. Online ahead of print. ABSTRACT Pancreatic cancer is a malignancy of rising incidence, especially in developed countries due to causes such as sedentary lifestyles, tobacco smoking and ultraprocessed high fat and high sugar diets, amongst others. It is in fact the 7th cause of cancer-related deaths worldwide, and, in the following years, it is expected to climb upwards to 2nd position, after lung cancer. This is because it may have an asymptomatic course, and when it becomes evident it is in advanced stages, accompanied by metastasis generally. For this reason, survival rates are so low and, even in the few successful cases there is a high possibility of recurrence. Identifying new molecular biomarkers is arising as a highly useful tool for pancreatic cancer clinical management, although much research and work remain to be done in this field. Thus, the present study aims to analyze a series of molecules (IRS-4, Rb1, Ki-67 y COX-2) as candidates for prognosis and survival by immunohistochemistry techniques. Additionally, a 60-month longitudinal surveillance program was conducted, associated with diverse clinical parameters. Kaplan-Meier curves estimating the time of survival according to tumoral expression of those molecules denoted a low cumulative survival rate. Importantly, we observed that high levels of IRS-4 were significantly associated with a bad prognosis of the disease, increasing 160 times the mortality risk. In this way, our research showed a relevant value of these biomarkers in pancreatic cancer patients' survival, opening a pathway for future research areas designed to inhibit these components. PMID:35137378 | DOI:10.14670/HH-18-432 View on the web Inoreader. Take back control of your news feed. Follow us on Twitter and Facebook.