Vol. 179, No. 4, Supplement, Wednesday, May 21, 2008 THE JOURNAL OF UROLOGY® 661

RESULTS:

Figure 1: RoSS master interface (left) and screen captures of module one and four (right top/bottom) Results: Figure 1 shows modules one and four and a trainee working on the RoSS master. The kinematics

the systems, with positive results. Pilot experimental evaluation is being performed on three subject groups of 10 subjects each, groups are non-medical personnel, residents without DVSS experience and surgeons regularly working with DVSS. Error metrics studied include interference between the tools, time taken to complete tasks, incorrect handling of tool and the number of times the master is reset to original position.

CONCLUSIONS: A novel surgical trainer has been constructed

and carefully tailored training modules.Source of Funding: Funding for the project was provided

by the Oishei Foundation.

1922POSITIVE CORRELATION BETWEEN MOTION ANALYSIS DATA ON THE LAPMENTOR™ VIRTUAL REALITY LAPAROSCOPIC SURGICAL SIMULATOR AND THE RESULTS FROM VIDEO TAPE ASSESSMENT OF REAL LAPAROSCOPIC SURGERIESTadashi Matsuda*, Yoshinari Ono, Shiro Baba, Masatsugu Iwamura, Toshiro Terachi, Seiji Naito, Ryohei Hattori, Elspeth M McDougall. Hirakata, Japan, Nagoya, Japan, Sagamihara, Japan, Isezaki, Japan, Fukuoka, Japan, and Orange, CA.

INTRODUCTION AND OBJECTIVE: The Japanese Society of Endourology and ESWL developed the Endoscopic Surgical Skill

video tapes of actual surgeries. We studied the correlation between the results of this video assessment by the ESSQ System and motion analysis data collected on the LapMentorTM (Simbionix Ltd, Lod, Israel) system, a virtual reality laparoscopic surgical simulator.

METHODS: A total of 59 doctors with experience equal to or more than 20 surgeries each were enrolled in this study. Forty-two

17 had not (Group N). Basic skill tasks No. 3 (SK3) to No. 8 (SK8) on the LapMentorTM were performed by all participants. Group scores on the motion analysis data were then compared using the Mann-Whitney U test. Forty-one surgeons had supplied un-edited videotapes showing a laparoscopic nephrectomy or an adrenalectomy in its entirety, and the videos were assessed in a blinded fashion by expert referees according to the evaluation criteria of the ESSQ System. Correlations between the

RESULTS: The average speed of the right hand forceps movements in SK3 and the clip application accuracy in SK5 were

correlation between the accuracy of the clip application in the SK5 and VS evaluations (R=0.321,p<0.05).

CONCLUSIONS: This study demonstrated the predictive validity of the LapMentor TM SK3 and SK5 tasks, supporting their possible usefulness for the preclinical evaluation of laparoscopic skills using virtual reality simulators.

Source of Funding: Grant-In-Aid 19591875 from the Ministry of Education, Science and Culture, Japan.

1923LAPED® 4-IN-1 SILICONE TRAINING AID FOR PRACTICING LAPAROSCOPIC SKILLS: AN EVALUATION OF CONTENT VALIDITYAldrin J R Gamboa*, Jose Benito A Abraham, Corollos S Abdelshehid, Hak J Lee, Reza Alipanah, Lorena A Andrade, Eric R Sargent, Michael K Louie, Geoffrey N Box, Leslie A Deane, Ralph V Clayman, Elspeth M McDougall. Orange, CA.

INTRODUCTION AND OBJECTIVE: In an effort to develop a simple, inexpensive laparoscopic reconstructive training model, we created the LapEd® 4-in-1, to simulate four reconstructive laparoscopic procedures including: pyeloplasty, vesicourethral anastomosis, cystorraphy, and partial nephrectomy. We evaluated its content validity with regard to performing a laparoscopic pyeloplasty and laparoscopic vesicourethral anastomosis.

METHODS: Liquid silicone was evenly applied in layers to a mold to create the LapEd® 4-in-1 model. A questionnaire evaluating content validity of the LapEd® 4-in-1 model was distributed to postgraduate urologists participating in a mini-residency program at our institution and in the 2006 American Urological Association Hands-Oncourse on reconstructive laparoscopic pyeloplasty.

RESULTS: A total of 56 postgraduate urologists used the

(51/56) and 86% (48/56) agreed that the model is helpful for practicing laparoscopic pyeloplasty and urethrovesical anastomosis, respectively. Urologists who were experienced in either performing laparoscopic pyeloplasty (N=6) or robotic-assisted and/or laparoscopic prostatectomy (N=11), would recommend this model to surgeons in training. Overall,86% (48/56) and 89% (50/56) of all participants would recommend this model for training postgraduate surgeons and residents, respectively.

CONCLUSIONS: The LapEd® 4-in-1 model has shown content validity providing a realistic model for practicing laparoscopic

pyeloplasty and urethrovesical anastomosis.Source of Funding: None

1924THE IMPACT OF A DUAL-FOCUS MONITOR SYSTEM ON INITIAL LAPAROSCOPIC SKILL ACQUISITION – PRELIMINARY RESULTS USING THE RADICAL PROSTATECTOMY MODELSashi S Kommu*, Kiran K Kommu, Rajiv Pillai, Aby Valliattu, Rama C Kannanchery, Andrew Forde, Ian E Lewis, Andrew J Dickinson, Faiz H Mumtaz, Nabi Ghulam, Christopher G Eden, Abhay Rane. Coventry, United Kingdom, and Surrey, United Kingdom.

INTRODUCTION AND OBJECTIVE: Traditionally, for the development of optimal laparoscopic urological skills, the trainee practiced on a box model with a single camera and monitor giving a solitary view. We applied a Dual-Focus System which incorporated two

system on the learning curve for vesicourethral anastomosis (VUA) and dorsal vein complex ligation (DVC) in laparoscopic radical prostatectomy as the platform test model.

METHODS: The kits consisted of box models (DIY-LTK®) equipped with either a single camera/monitor system or a dual camera/monitor system). The VUA model consisted of a Level-3 model (JEndourol. 2007, 21(s1): A1-A292.). Eight novices were enrolled. Fourperformed the task of VUA using the Single camera system and four used the Dual-Focus System. For the DVC ligation, the model consisted of Level-3 model (J Endourol. 2007, 21(s1): A1-A292.). Six novices were enrolled. Three performed the task of dorsal vein ligation using the single and three used the Dual-Focus System. The times to achievement of a

surgeons, were tallied. Anastomoses were checked for leaks and