Aswathy Ravikumar, Harini Sriraman^*

Computer Systems Science and Engineering, Vol.46, No.1, pp. 563-578, 2023, DOI:10.32604/csse.2023.034710 - 20 January 2023

Abstract Deep neural networks are gaining importance and popularity in applications and services. Due to the enormous number of learnable parameters and datasets, the training of neural networks is computationally costly. Parallel and distributed computation-based strategies are used to accelerate this training process. Generative Adversarial Networks (GAN) are a recent technological achievement in deep learning. These generative models are computationally expensive because a GAN consists of two neural networks and trains on enormous datasets. Typically, a GAN is trained on a single server. Conventional deep learning accelerator designs are challenged by the unique properties of GAN,… More >

Mariem Belhor^1,2,3, Adnen El-Amraoui^1,*, Abderrazak Jemai², François Delmotte¹

Computer Systems Science and Engineering, Vol.45, No.1, pp. 1-19, 2023, DOI:10.32604/csse.2023.029058 - 16 August 2022

Abstract This research focuses on the home health care optimization problem that involves staff routing and scheduling problems. The considered problem is an extension of multiple travelling salesman problem. It consists of finding the shortest path for a set of caregivers visiting a set of patients at their homes in order to perform various tasks during a given horizon. Thus, a mixed-integer linear programming model is proposed to minimize the overall service time performed by all caregivers while respecting the workload balancing constraint. Nevertheless, when the time horizon become large, practical-sized instances become very difficult to More >

Aaron Berkenwald, Kristian D. Stensland, Luke E. Sebel, Alireza Moinzadeh, William Faust

Canadian Journal of Urology, Vol.28, No.3, pp. 10692-10698, 2021

Abstract Introduction: Transperineal prostate biopsy (TPBx) allows for prostate cancer detection with fewer infectious complications when compared to transrectal prostate biopsy (TRUSBx). We evaluated the initial experience of a single physician with no prior TPBx exposure, compared to TRUSBx and MRI/US fusion biopsy (MRIBx) performed by experienced physicians.
Materials and methods: All consecutive patients undergoing prostate biopsy (June 2019-March 2020) were included. Patient discomfort, procedural time, clinically significant cancer detection rates (csCDR), and 30-day complications were compared between TPBx, TRUSBx, and MRIBx.
Results: A total of 303 patients underwent biopsy. Comparing TPBx to TRUSBx to MRIBx, median pain scores… More >

Alexis Wang¹, Charles F. Polotti², Shu Wang¹, Sammy Elsamra^2,*, Mohummad Minhaj Siddiqui^1,*

Canadian Journal of Urology, Vol.26, No.6, pp. 10033-10038, 2019

Abstract Introduction: Robotic cystectomy with intracorporeal urinary diversion (RCID) is a technically challenging procedure. It is understood that this approach has a learning curve; however, limited studies have characterized this learning curve. The cumulative sum (CUSUM) method plots the learning curve. The aim of this study was to use the CUSUM approach to investigate the number of cases required to reach a consistent, desired performance level for RCID.
Materials and methods: A retrospective study of the first 27 and 28 RCID cases performed by two new fellowship-trained faculty at two separate institutions from November 2014 to January 2018… More >

Joris Zhou^1,*, Côme Tholomier^1,*, Marc Zanaty¹, Pierre-Alain Hueber¹, Roger Valdivieso¹, Pierre Karakewicz¹, Daniel Liberman¹, Vincent Misrai², Kevin C. Zorn¹

Canadian Journal of Urology, Vol.24, No.4, pp. 8922-8931, 2017

Abstract Introduction: This study aims at analyzing the impact of reaching current markers of proficiency on intra and postoperative clinical outcomes of laser vaporization with 180W GreenLight XPS in the treatment of benign prostatic hyperplasia.
Materials and methods: A retrospective analysis was conducted on a prospectively collected database of 328 consecutive patients who underwent photoselective vaporization of the prostate (PVP) using Greenlight XPS performed by a single experienced laser surgeon. A logarithmic model was used to evaluate the case number to attain benchmark criteria for durable treatment. We compared clinical outcomes before and after current markers of proficiency,… More >

Jack M. Zuckerman, Katherine Henderson, Kurt McCammon

Canadian Journal of Urology, Vol.20, No.3, pp. 6768-6772, 2013

Abstract Introduction: A potential learning curve associated with AdVance (American Medical Systems, Minnetonka, MN, USA) sling placement has not been adequately reported.
Materials and methods: Retrospective analysis of our AdVance single surgeon database. Patients with a history of a radical prostatectomy, no past radiation or prior incontinence interventions and at least 12 months of follow up were included. A learning curve was evaluated by predicting patient outcomes using their order within the surgical log. Univariate and multivariate logistic regressions were performed.
Results: Sixty patients with mean age of 65 years and an average 28.2 months of follow up were More >

Nathan A. Bockholt¹, Eric M. DeRoo¹, Kenneth G. Nepple¹, Joseph M. Modrick², Mark C. Smith², Bernard Fallon¹, A. Curtis Hass², Chad R. Tracy¹, James A. Brown¹

Canadian Journal of Urology, Vol.20, No.5, pp. 6907-6912, 2013

Abstract Introduction: We report the first 100 patients who underwent prostate brachytherapy as monotherapy with 125I at an institution with moderate volume radical prostatectomy but low volume brachytherapy (< 2 cases per month). Learning curve and quality improvement was assessed by way of achieving prescription dose targets.
Materials and methods: From May 2002 to August 2006, 100 patients underwent prostate 125I brachytherapy monotherapy via preplanned approach. Preoperative planned dose to 100% of prostate gland (D100) was 145 Gy and postoperative confirmed dose was assessed by computed tomography. The cohort was divided into quartiles and recurrence was assessed using… More >

Stavros Gravas, Kostas Efstathiou, Ioannis Zachos, Michael D. Melekos, Vassilios Tzortzis

Canadian Journal of Urology, Vol.19, No.3, pp. 6269-6273, 2012

Abstract Introduction: To assess the learning curve for fluorescence cystoscopy using hexaminolevulinate hydrochloride (HAL) in patients with bladder cancer.
Material and methods: Fifty patients underwent bladder instillation with HAL. Two senior residents separately inspected the bladder using white light cystoscopy, followed by fluorescence cystoscopy, and mapped the lesions. An experienced photodynamic diagnosis (PDD)-trained urologist also performed both cystoscopies, mapped and resected or cold biopsied suspect lesions under the supervision of another experienced urologist. To evaluate the learning curve, patients were divided into five subgroups: group 1 (patients 1–10), group 2 (11–20), group 3 (21–30), group 4 (31–40), and… More >

Morgan Rouprêt^1,3, David R. Yates^1,3, Justine Varinot^2,3, Véronique Phé^1,3, Emmanuel Chartier-Kastler^1,3, Marc-Olivier Bitker^1,3, Eva Compérat^2,3

Canadian Journal of Urology, Vol.19, No.5, pp. 6459-6464, 2012

Abstract Introduction: To assess the quality of transurethral resection of bladder tumors (TURBTs) performed by "senior" and "junior" urologists for pT1 tumors in terms of detrusor muscle (DM) presence and recurrence rate at 3-month first cystoscopy (RR-FC). Non-muscle invasive bladder cancer (NMIBC) is a heterogeneous group with differing biological potentials. Tumors invading lamina propria (pT1) have an increased propensity for recurrence and progression. Accurate staging at the time of primary TURBT, including the presence of DM, is crucial to avoid understaging and unnecessary delay in definitive treatment.
Materials and methods: We analyzed our maintained bladder tumor database (TURBTs… More >

Kevin C. Zorn, Mark A. Wille, Alan E. Thong, Mark H. Katz, Sergey A. Shikanov, Aria Razmaria, Ofer N. Gofrit, Gregory P. Zagaja, Arieh L. Shalhav

Canadian Journal of Urology, Vol.16, No.4, pp. 4742-4749, 2009

Abstract Background: Several robot-assisted radical prostatectomy (RARP) series have reviewed the impact of the initial learning curve on perioperative outcomes. However, little is known about the impact of experience on urinary and sexual outcomes. Herein, we review the perioperative, pathological and functional outcomes of our initial 700 consecutive procedures with at least 1 year follow up.
Methods: From 2003-2006, 700 consecutive men underwent RARP at a single, academic institution. Perioperative data and pathologic outcomes were prospectively collected. Validated, UCLA-PCI-SF36v2 quality-of-life questionnaires were also obtained at 1, 3, 6 and 12 months following surgery. Outcomes between groups (cases 1-300,… More >