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https://www.readbyqxmd.com/read/29474742/deep-feature-classification-of-angiomyolipoma-without-visible-fat-and-renal-cell-carcinoma-in-abdominal-contrast-enhanced-ct-images-with-texture-image-patches-and-hand-crafted-feature-concatenation
#1
Hansang Lee, Helen Hong, Junmo Kim, Dae Chul Jung
PURPOSE: To develop an automatic deep feature classification (DFC) method for distinguishing benign angiomyolipoma without visible fat (AMLwvf) from malignant clear cell renal cell carcinoma (ccRCC) from abdominal contrast-enhanced computer tomography (CE CT) images. METHODS: A dataset including 80 abdominal CT images of 39 AMLwvf and 41 ccRCC patients was used. We proposed a DFC method for differentiating the small renal masses (SRM) into AMLwvf and ccRCC using the combination of hand-crafted and deep features, and machine learning classifiers...
February 23, 2018: Medical Physics
https://www.readbyqxmd.com/read/29474509/blepharoplasty-anatomy-planning-techniques-and-safety
#2
Mohammed Alghoul
Blepharoplasty is one of the most commonly performed cosmetic surgical procedures. To date it remains the most powerful method of periorbital rejuvenation when compared to other non-surgical modalities, especially in the aging face. Despite that, the procedure has its shortcomings that include a steep learning curve, prolonged recovery and potential for appearance and life-changing complications. Attaining successful outcomes rely on solid understanding of facial topography, patient and technique selection, and, when appropriate, following a conservative approach...
February 21, 2018: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29473375/evaluation-of-the-complications-in-laparoscopic-retroperitoneal-radical-nephrectomy-an-experience-of-high-volume-centre
#3
Ali Serdar Gozen, Vitalie Gherman, Yigit Akin, Mustafa Suat Bolat, Muhammad Elmussareh, Jens Rassweiler
OBJECTIVES: To provide a standardised report of complications after retroperitoneal laparoscopic radical nephrectomy (rLRN) in a high-volume centre using Clavien-Dindo classification. MATERIALS AND METHODS: We analysed records maintained in a prospective database of 330 consecutive patients that underwent rLRN between March 1995 and September 2016. All complications were graded according to the modified Clavien-Dindo classification. Three generations of surgeons were defined and the learning curve in rLRN was evaluated by comparing the first 100 cases (Group A) performed by firstgeneration surgeons with the last 100 cases (Group B) by thirdgeneration surgeons...
December 31, 2017: Archivio Italiano di Urologia, Andrologia
https://www.readbyqxmd.com/read/29473129/agile-convolutional-neural-network-for-pulmonary-nodule-classification-using-ct-images
#4
Xinzhuo Zhao, Liyao Liu, Shouliang Qi, Yueyang Teng, Jianhua Li, Wei Qian
OBJECTIVE: To distinguish benign from malignant pulmonary nodules using CT images is critical for their precise diagnosis and treatment. A new Agile convolutional neural network (CNN) framework is proposed to conquer the challenges of a small-scale medical image database and the small size of the nodules, and it improves the performance of pulmonary nodule classification using CT images. METHODS: A hybrid CNN of LeNet and AlexNet is constructed through combining the layer settings of LeNet and the parameter settings of AlexNet...
February 23, 2018: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/29472757/trifecta-outcomes-to-assess-learning-curve-of-robotic-partial-nephrectomy
#5
Olamide O Omidele, Natan Davoudzadeh, Michael Palese
Background and Objectives: The learning curve for achieving desirable perioperative outcomes in robot-assisted partial nephrectomy (RAPN) has not been well studied. Information is available regarding "trifecta" outcomes of no complications, no positive margins, warm ischemia time (WIT) of ≤25 minutes, and a ≤15% decrease in postoperative glomerular filtration rate (GFR). This study was conducted to assess the impact of the learning curve on surgical outcomes in patients undergoing RAPN...
January 2018: JSLS: Journal of the Society of Laparoendoscopic Surgeons
https://www.readbyqxmd.com/read/29471912/detection-of-tuberculosis-patterns-in-digital-photographs-of-chest-x-ray-images-using-deep-learning-feasibility-study
#6
A S Becker, C Blüthgen, V D Phi van, C Sekaggya-Wiltshire, B Castelnuovo, A Kambugu, J Fehr, T Frauenfelder
OBJECTIVE: To evaluate the feasibility of Deep Learning-based detection and classification of pathological patterns in a set of digital photographs of chest X-ray (CXR) images of tuberculosis (TB) patients. MATERIALS AND METHODS: In this prospective, observational study, patients with previously diagnosed TB were enrolled. Photographs of their CXRs were taken using a consumer-grade digital still camera. The images were stratified by pathological patterns into classes: cavity, consolidation, effusion, interstitial changes, miliary pattern or normal examination...
March 1, 2018: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/29468172/hip-arthroscopic-surgery-for-femoroacetabular-impingement-a-prospective-analysis-of-the-relationship-between-surgeon-experience-and-patient-outcomes
#7
Sergio E Flores, Kristina R Borak, Alan L Zhang
Background: Hip arthroscopic surgery is a rapidly growing procedure, but it may be associated with a steep learning curve. Few studies have used patient-reported outcome (PRO) surveys to investigate the relationship between surgeon experience and patient outcomes after the arthroscopic treatment of femoroacetabular impingement (FAI). Hypothesis: Patients undergoing hip arthroscopic surgery for the treatment of FAI in the early stages of a surgeon's career will have significantly worse outcomes and longer procedure times compared with patients treated after the surgeon has gained experience...
February 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29467114/adrenal-venous-sampling-the-learning-curve-of-a-single-interventionalist-with-282-consecutive-procedures
#8
Hugo Jakobsson, Katerina Farmaki, Augustinas Sakinis, Olof Ehn, Gudmundur Johannsson, Oskar Ragnarsson
PURPOSE: Primary aldosteronism (PA) is a common cause of secondary hypertension. Adrenal venous sampling (AVS) is the gold standard for assessing laterality of PA, which is of paramount importance to decide adequate treatment. AVS is a technically complicated procedure with success rates ranging between 30% and 96%. The aim of this study was to investigate the success rate of AVS over time, performed by a single interventionalist. METHODS: This was a retrospective study based on consecutive AVS procedures performed by a single operator between September 2005 and June 2016...
February 21, 2018: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/29465749/systematic-review-of-measurement-tools-to-assess-surgeons-intraoperative-cognitive-workload
#9
REVIEW
R D Dias, M C Ngo-Howard, M T Boskovski, M A Zenati, S J Yule
BACKGROUND: Surgeons in the operating theatre deal constantly with high-demand tasks that require simultaneous processing of a large amount of information. In certain situations, high cognitive load occurs, which may impact negatively on a surgeon's performance. This systematic review aims to provide a comprehensive understanding of the different methods used to assess surgeons' cognitive load, and a critique of the reliability and validity of current assessment metrics. METHODS: A search strategy encompassing MEDLINE, Embase, Web of Science, PsycINFO, ACM Digital Library, IEEE Xplore, PROSPERO and the Cochrane database was developed to identify peer-reviewed articles published from inception to November 2016...
February 21, 2018: British Journal of Surgery
https://www.readbyqxmd.com/read/29464748/prospective-randomized-study-evaluating-ultrasound-versus-fluoroscopy-guided-sacral-interstim%C3%A2-lead-placement-a-pilot-study
#10
Jaschar Shakuri-Rad, Arman Cicic, Jannah Thompson
OBJECTIVE: To investigate the use of intraoperative ultrasound during stage I InterStim® sacral lead placement. METHODS: A total of 40 patients were randomly assigned to undergo InterStim® lead placement utilizing fluoroscopy or ultrasound guidance. Patients were blinded for the duration of the study. The surgeon and staff were blinded until after induction of anesthesia. Patients met criteria for refractory overactive bladder, fecal incontinence, or both. The ICIQ-OABqol, OABSS, and FIQL validated questionnaires were used pre- and post-operatively...
February 21, 2018: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/29464146/virtual-surgical-planning-the-pearls-and-pitfalls
#11
Johnny I Efanov, Andrée-Anne Roy, Ke N Huang, Daniel E Borsuk
Objective: Over the past few years, virtual surgical planning (VSP) has evolved into a useful tool for the craniofacial surgeon. Virtual planning and computer-aided design and manufacturing (CAD/CAM) may assist in orthognathic, cranio-orbital, traumatic, and microsurgery of the craniofacial skeleton. Despite its increasing popularity, little emphasis has been placed on the learning curve. Methods: A retrospective analysis of consecutive virtual surgeries was done from July 2012 to October 2016 at the University of Montreal Teaching Hospitals...
January 2018: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/29463808/a-novel-heterogeneous-network-based-method-for-drug-response-prediction-in-cancer-cell-lines
#12
Fei Zhang, Minghui Wang, Jianing Xi, Jianghong Yang, Ao Li
An enduring challenge in personalized medicine lies in selecting a suitable drug for each individual patient. Here we concentrate on predicting drug responses based on a cohort of genomic, chemical structure, and target information. Therefore, a recently study such as GDSC has provided an unprecedented opportunity to infer the potential relationships between cell line and drug. While existing approach rely primarily on regression, classification or multiple kernel learning to predict drug responses. Synthetic approach indicates drug target and protein-protein interaction could have the potential to improve the prediction performance of drug response...
February 20, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29461442/3d-endoscopic-donor-nephrectomy-versus-robot-assisted-donor-nephrectomy-a-detailed-comparison-of-2-prospective-cohorts
#13
Evalyn E A P Mulder, Shiromani Janki, Türkan Terkivatan, Karel W J Klop, Jan N M IJzermans, T C Khe Tran
BACKGROUND: There are 2 endoscopic surgical techniques that implement 3D vision to overcome visual misperception: 3D endoscopy and the da Vinci surgical system. 3D endoscopy has several advantages, such as the presence of tactile feedback and easy implementation, at lower costs. We aimed to assess whether 3D endoscopy could be an alternative to the robot during living donor nephrectomy (LDN). METHODS: Between April 2015 and April 2016 we prospectively collected data on 40 patients undergoing 3D endoscopic LDNs in 1 center, performed by a da Vinci certified surgeon...
February 14, 2018: Transplantation
https://www.readbyqxmd.com/read/29457342/soft-tissue-balancing-in-total-knee-arthroplasty-using-sensor-guided-assessment-is-there-a-learning-curve
#14
Monther A Gharaibeh, Darren B Chen, Samuel J MacDessi
BACKGROUND: Sensor-guided assessment for soft tissue balance in total knee arthroplasty (TKA) has been reported to improve patient satisfaction and self-reported outcome scores. As more surgeons adopt this technology in TKA, we performed this study to identify if there is a learning curve with its use. METHODS: Analysis of a total of 90 consecutive cases was performed in this study. Initial and final intercompartmental pressure differences were recorded before and after knee ligament balancing...
February 18, 2018: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/29456941/the-learning-curve-in-surgical-practice-and-its-applicability-to-rhinoplasty
#15
Aditya Yeolekar, Haris Qadri
The learning curve as a concept has been considered, discussed and debated in medical education and healthcare for over two decades. The precise usage has been recognised in surgical disciplines both broad specialties and sub-specialties. Rollin Daniel in his book stated that, rhinoplasty is the most difficult of all cosmetic operations for three reasons, (a) nasal anatomy is highly variable, (b) the procedure must correct form and function and (c) the final result must meet the patients expectations. With this in mind a study was carried on the perception of learning curve in rhinoplasty based on a surgeon questionnaire at Marien Hospital, Stuttgart, Germany under Prof...
March 2018: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/29455422/correction-to-learning-curves-of-two-different-techniques-for-the-intra-articular-injection-of-the-knee-joint-under-fluoroscopic-guidance
#16
Paolo Simoni, Olivier Malaise, Mounia El Hachemi, Angelo Tromba, Grammatina Boitsios
The published version of this article contained a mistake. In Table 1 of the original article, the numbers of successful injections and failed injections were not correct. The correct Table 1 should read as given below.
February 17, 2018: La Radiologia Medica
https://www.readbyqxmd.com/read/29454718/the-learning-curve-for-robot-assisted-minimally-invasive-thoracoscopic-esophagectomy-results-from-312-cases
#17
Pieter C van der Sluis, Jelle P Ruurda, Sylvia van der Horst, Lucas Goense, Richard van Hillegersberg
BACKGROUND: Robot-assisted minimally invasive thoraco-laparoscopic esophagectomy (RAMIE) was developed in 2003. RAMIE was shown to be safe and oncologically effective. The aim of this study was to assess the learning curve and the proctoring program for a newly introduced surgeon (surgeon 2). METHODS: The "learning curve" was defined as the number of operations that must be performed by a surgeon to achieve a steady level of performance. Measures of proficiency to describe the learning curve of the proctor and the newly introduced surgeon 2 included: operating time, blood loss and conversion rates and were analyzed using the cumulative sum (CUSUM) method...
February 15, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29453728/single-site-port-robotic-assisted-hysterectomy-an-update
#18
REVIEW
Christos Iavazzo, Evelyn Eleni Minis, Ioannis D Gkegkes
Single-incision approach in robotic gynecology is a relatively new concept. The role of single-port systems in robotic hysterectomy, their advantages and disadvantages, as well as the technical challenges, are still under investigation. A systematic review was performed by searching in PubMed and Scopus databases. In 810 out of 1225 patients, hysterectomy was performed for non-neoplastic disease. Single-Site ® was the most common port system. Duration of the procedure and relative blood loss ranged from 60 to 311 min and 7 to 750 ml, respectively...
February 16, 2018: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/29453709/prediction-of-autism-at-3-years-from-behavioural-and-developmental-measures-in-high-risk-infants-a-longitudinal-cross-domain-classifier-analysis
#19
G Bussu, E J H Jones, T Charman, M H Johnson, J K Buitelaar
We integrated multiple behavioural and developmental measures from multiple time-points using machine learning to improve early prediction of individual Autism Spectrum Disorder (ASD) outcome. We examined Mullen Scales of Early Learning, Vineland Adaptive Behavior Scales, and early ASD symptoms between 8 and 36 months in high-risk siblings (HR; n = 161) and low-risk controls (LR; n = 71). Longitudinally, LR and HR-Typical showed higher developmental level and functioning, and fewer ASD symptoms than HR-Atypical and HR-ASD...
February 16, 2018: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/29452755/machine-learning-algorithms-based-on-signals-from-a-single-wearable-inertial-sensor-can-detect-surface-and-age-related-differences-in-walking
#20
B Hu, P C Dixon, J V Jacobs, J T Dennerlein, J M Schiffman
The aim of this study was to investigate if a machine learning algorithm utilizing triaxial accelerometer, gyroscope, and magnetometer data from an inertial motion unit (IMU) could detect surface- and age-related differences in walking. Seventeen older (71.5 ± 4.2 years) and eighteen young (27.0 ± 4.7 years) healthy adults walked over flat and uneven brick surfaces wearing an inertial measurement unit (IMU) over the L5 vertebra. IMU data were binned into smaller data segments using 4-s sliding windows with 1-s step lengths...
January 12, 2018: Journal of Biomechanics
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