Abstract:
:This study aimed to measure acoustic access to the prostate for extracorporeal ultrasound ablation. Both transabdominal and transperineal approaches were considered. The objective was to measure the size and shape of the aperture available for unobstructed targeting of the prostate. CT images of 17 randomly selected men > 56 years of age were used to create 3D reconstructions of the lower abdomen and pelvis. Rays were traced from target locations in the prostate toward the perineum and the abdomen. The maximum CT density encountered along each path was recorded; those paths that traversed structures with CT density exceeding a soft tissue threshold were considered to be blocked by bone. Unblocked rays comprised the accessible aperture. The aperture through the perineum was found to be a triangular-shaped region bounded by the lower bones of the pelvis varying significantly in size between subjects. The free aperture through the abdomen was wedge shaped limited by the pubis and also with great subject-to-subject variability. Average unblocked fractions of an f/1 transducer to target base, middle, and apex of the prostate along the urethra from the perineum were 77.0%, 94.4%, and 99.6%, respectively. Averages targeting from the abdomen were 86.1%, 52.3%, and 11.0%. Acoustic access to the prostate for therapy through the perineum was judged to be feasible. Access from the abdomen was judged to be sufficient for the base of the prostate, but likely inadequate for the middle and apex.
journal_name
J Endouroljournal_title
Journal of endourologyauthors
Hall TL,Hempel CR,Sabb BJ,Roberts WWdoi
10.1089/end.2009.0567subject
Has Abstractpub_date
2010-11-01 00:00:00pages
1875-81issue
11eissn
0892-7790issn
1557-900Xjournal_volume
24pub_type
杂志文章abstract::A new tip design of a 3.3F electrohydraulic probe for endoureteral lithotripsy was evaluated in comparison to a regular probe. The peak pressure, as well as the slope of the shock front, depend solely on the voltage. Increasing the capacity leads merely to broader pulses. A laser-like short high-pressure pulse has a g...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.1993.7.35
更新日期:1993-02-01 00:00:00
abstract:INTRODUCTION:Functional outcome and quality of life (QOL) domains are important outcomes after curative therapy for prostate cancer. Although useful for scientific purposes, QOL questionnaires may be too extensive for daily routine, and single questions or interview-assessed outcomes may be more practical alternatives....
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2012.0735
更新日期:2013-11-01 00:00:00
abstract:PURPOSE:We developed a genitourinary skills training (GUST) curriculum for incoming third year medical students (MS3) and performed a follow-up study of comfort with and utilization of these skills. MATERIALS AND METHODS:GUST consisted of a didactic lecture followed by skills sessions including standardized patient te...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2012.0284
更新日期:2012-10-01 00:00:00
abstract:PURPOSE:To assess the feasibility and report early outcomes of robot-assisted anatrophic nephrolithotomy (RAN) as a treatment modality for patients with complex staghorn calculi. PATIENTS AND METHODS:In this single-center prospective study, seven consecutive patients underwent RAN for complex staghorn calculi. After d...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2013.0597
更新日期:2014-03-01 00:00:00
abstract::In five patients with chronic intractable ureteral obstruction, a fine-bore nephrostomy tube was placed in a subcutaneous tunnel to drain the kidney without an external appliance. Good quality of life was achieved for 6 months to 2 years. When conventional intraluminal stents cannot be used, consideration should be gi...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.1997.11.411
更新日期:1997-12-01 00:00:00
abstract:INTRODUCTION:Open nephrectomy is associated with significant morbidity. For several years, minimally invasive alternatives have been developed such as laparoscopic nephrectomy or transarterial renal ablation. This paper focuses on the different principles of vaso-occlusion and further improvements of the technique such...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2007.9826
更新日期:2008-04-01 00:00:00
abstract:INTRODUCTION:The improvements in flexible ureteroscopes provide efficient access to the upper urinary tract and advancements in laser technology strengthens the endourologists' armamentarium. The endourologists must be aware of the advantages and the potential complications of these powerful technological equipments. O...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2015.0747
更新日期:2016-05-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Hemodynamic changes during abdominal laparoscopic procedures have been described as multifactorial phenomena. We report the possible occurrence of bradycardia and asystolic cardiac arrest during insufflation of the balloon trocar as a rare and serious but reversible complication during endoscopic...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2007.0139
更新日期:2009-02-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Although the evidence is sparse, most urologists advise the insertion of a safety guide wire (SGW) alongside the ureteroscope whenever performing ureteroscopy (URS). The aim of the study was to compare the results of ureteroscopic treatment for ureteral stones at the Oslo University Hospital (OUH...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2013.0248
更新日期:2013-10-01 00:00:00
abstract:PURPOSE:To investigate prospectively the benefits of three-dimensional stereolithographic biomodeling produced from CT data as an aid to achieving optimal access for percutaneous nephrolithotripsy (PCNL). PATIENTS AND METHODS:Eight patients with complex urinary calculi were selected. Multislice CT scans of the kidney ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2006.20.92
更新日期:2006-02-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Retrograde ureteroscopic marsupialization is a pure natural orifice translumenal endoscopic surgery (NOTES). We retrospectively examined the feasibility and safety of this technique to manage symptomatic simple renal cysts. PATIENTS AND METHODS:Sixteen patients with simple renal cysts were selec...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2009.0676
更新日期:2011-01-01 00:00:00
abstract:PURPOSE:To estimate the acceptance rate of peer-reviewed journals, to describe the time course of subsequent full publication, and to identify those with characteristics associated with publication of the abstracts presented at the World Congress of Endourology (WCE). METHODS:All abstracts accepted for presentation at...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2006.20.996
更新日期:2006-12-01 00:00:00
abstract:: Purpose: Kidney stone recurrence rates vary between patients. A patient's risk informs the frequency and intensity of preventative interventions. Clinicians routinely use clinical experience to estimate risk. We sought to compare clinician estimated recurrence risk with th...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2020.0978
更新日期:2020-11-16 00:00:00
abstract:INTRODUCTION:The impact of intrafascial versus interfascial nerve sparing during radical prostatectomy on oncologic and postoperative outcome is still controversial. This manuscript compares the outcomes of intrafascial versus interfascial techniques of nerve sparing used during robot-assisted laparoscopic radical pros...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2009.0369
更新日期:2009-09-01 00:00:00
abstract::We describe flexible ureteroscopy-directed retrograde nephrostomy access using a puncture wire to achieve renal access. This is a natural extension of modern retrograde intrarenal surgical techniques and a modernization of the original Lawson technique for retrograde nephrostomy tract creation. In appropriately select...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2012.0160
更新日期:2012-10-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Laparoscopic radical cystectomy is confined to centers where advanced laparoscopy is performed, and its role is not yet well clear. Our aim was to evaluate, through a prospective comparative study, the advantages of the laparoscopic compared with an open approach. PATIENTS AND METHODS:From Novem...
journal_title:Journal of endourology
pub_type: 临床试验,杂志文章
doi:10.1089/end.2006.0224
更新日期:2007-03-01 00:00:00
abstract::Technique for apical dissection and control of the dorsal vein complex (DVC) during robot-assisted laparoscopic radical prostatectomy (RALP) affects blood loss, apical positive margins, and recovery of urinary control. Over the past 7 years, our technique for apical dissection has been spurred by the overarching goal ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2012.0415
更新日期:2012-12-01 00:00:00
abstract:PURPOSE:To assess the safety and effectiveness of laparoscopic retroperitoneal surgery and attempt to define its role in the management of urolithiasis. PATIENTS AND METHODS:Laparoscopic retroperitoneal surgery (LRS) was undertaken in 72 male and 42 female patients with calculous disease from March 1994 to April 2000 ...
journal_title:Journal of endourology
pub_type: 临床试验,杂志文章
doi:10.1089/08927790152596271
更新日期:2001-09-01 00:00:00
abstract:OBJECTIVE:Intraoperative mannitol is routinely administered for renoprotection in partial nephrectomy (PN). However, there is a paucity of evidence supporting mannitol's renoprotective effect. We performed a retrospective study of mannitol's efficacy in PN. MATERIALS AND METHODS:Using an institutional database, patien...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2017.0415
更新日期:2018-04-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Calculi from patients with musculoskeletal (MS) anomalies who are largely immobile and prone to urinary infections have been traditionally composed primarily of struvite and carbonate apatite. Because of substantial improvements in the care of these patients in recent decades, stone etiology may ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2010.0698
更新日期:2011-09-01 00:00:00
abstract::Standard laparoscopic surgery requires maintenance of the working cavity by continual carbon dioxide insufflation and exaggerated Trendelenburg positioning. Both cardiopulmonary and metabolic adverse effects may result from these maneuvers, which may be avoided by a gasless approach to laparoscopic surgery. We investi...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.1995.9.483
更新日期:1995-12-01 00:00:00
abstract::Complications from laparoscopically placed staples are rare. We present two patients with ureteral obstruction secondary to eroded staples. Each patient had a remote history of laparoscopic abdominal or pelvic surgery and was treated with endoscopic removal and short-term ureteral stenting. The clinical presentation a...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2006.20.659
更新日期:2006-09-01 00:00:00
abstract::A patient with a lymphocele after laparoscopic pelvic lymphadenectomy and radical retropubic prostatectomy was treated successfully with a single instillation of diatrizoate meglumine through a Jackson-Pratt drain. The authors review the origin of lymphoceles and various methods for treating them. ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.1993.7.337
更新日期:1993-08-01 00:00:00
abstract::The long-term effects of extracorporeal shockwave lithotripsy (SWL) on children treated for renal calculi are unclear. To study the effects on the immature animal, we evaluated 31 Wistar white rats that underwent right nephrectomy at 30 days of age. At 40 days of age they were divided into three groups: a control grou...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.1995.9.45
更新日期:1995-02-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Current urologic laparoscopic procedures include preservation of locoregional nerve fibers. The use of electrical coagulation is limited because of tissue conductance of current and heat production. While ultrasonic coagulation does not use electricity, heat is still produced. We designed an anim...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2010.0031
更新日期:2010-11-01 00:00:00
abstract:PURPOSE:To construct, train, and apply an artificial neural network (ANN) system for prediction of different outcome variables of percutaneous nephrolithotomy (PCNL). We calculated predictive accuracy, sensitivity, and precision for each outcome variable. METHODS:During the study period, all adult patients who underwe...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2016.0791
更新日期:2017-05-01 00:00:00
abstract:BACKGROUND AND PURPOSE:The centrality-index (C-Index), preoperative aspects and dimensions used for anatomic (P.A.D.U.A.) classification, and radius.exophyic/endophytic.nearness.anterior/posterior.location (R.E.N.A.L.) nephrometry schemes were developed as standardized scoring systems (SS) to quantify anatomic characte...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2011.0301
更新日期:2011-12-01 00:00:00
abstract:PURPOSE:To assess the clinical efficacy and safety of photoselective laser vaporization of the prostate (PVP) in the treatment of patients with acute urinary retention (AUR) secondary to benign prostatic hyperplasia (BPH). PATIENTS AND METHODS:Forty-two patients (mean age 72 +/- 5 years, range 65-89) with AUR because ...
journal_title:Journal of endourology
pub_type: 临床试验,杂志文章
doi:10.1089/end.2007.0045
更新日期:2008-03-01 00:00:00
abstract:PURPOSE:To assess whether our ureteroscopic real-time navigation system has the possibility to reduce radiation exposure and improve performance of ureteroscopic maneuvers in surgeons of various ages and experience levels. MATERIALS AND METHODS:Our novel ureteroscopic navigation system used a magnetic tracking device ...
journal_title:Journal of endourology
pub_type: 杂志文章,多中心研究
doi:10.1089/end.2015.0054
更新日期:2015-09-01 00:00:00
abstract:PURPOSE:To define possible predictive factors for success and complications for ureteroscopic holmium laser lithotripsy procedures. PATIENTS AND METHODS:All 105 ureteroscopic holmium laser lithotripsy procedures performed between 1996 and 2005 were analyzed. Data recorded were sex, age, stone size, stone location, com...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2007.0299
更新日期:2008-02-01 00:00:00