Abstract:
BACKGROUND AND PURPOSE:Although ultrasonography-guided percutaneous nephrostomy is relatively safe, a number of factors make it challenging for inexperienced operators. A computerized needle navigation technique using tracked ultrasonography snapshots was investigated to determine whether performance of percutaneous nephrostomy by inexperienced users could be improved. METHODS:Ten operators performed the procedure on a phantom model with alternating needle guidance between conventional ultrasonography and tracked ultrasonography snapshots. The needle was reinserted until fluid backflow confirmed calyceal access. Needle trajectories were recorded using the real time needle navigation system for offline evaluation of operator performance. Recorded needle trajectories were used to measure needle motion path length inside the phantom tissue, number of reinsertions, total procedure time, and needle insertion time as end points of this study. RESULTS:Needle path length measured inside the phantom tissue was significantly lower with ultrasonography snapshots guidance (295.0±23.1 mm, average±standard error of the mean) compared with control procedures (977.9±144.4 mm, P<0.01). This was associated with a significantly lower number of needle insertion attempts with ultrasonography snapshots (average 1.27±0.10 vs 2.83±0.31, P<0.01). The total procedure time and the needle insertion time were also significantly lower with ultrasonography snapshots guidance. CONCLUSION:Tracked ultrasonography snapshots appear to improve the performance of percutaneous nephrostomy in these preliminary investigations, justifying further validation studies. The presented navigation system is reproducible because of commercially available hardware and open-source software components, facilitating its potential role in clinical practice.
journal_name
J Endouroljournal_title
Journal of endourologyauthors
Ungi T,Beiko D,Fuoco M,King F,Holden MS,Fichtinger G,Siemens DRdoi
10.1089/end.2014.0011subject
Has Abstractpub_date
2014-09-01 00:00:00pages
1040-5issue
9eissn
0892-7790issn
1557-900Xjournal_volume
28pub_type
杂志文章abstract::Water-Induced Thermotherapy (WIT trade mark ) was developed to treat lower urinary tract symptoms (LUTS) and to reduce bladder outlet obstruction (BOO) secondary to benign prostatic hyperplasia (BPH). The principle is to produce heat-induced coagulative necrosis and secondary ablation of the obstructing hyperplastic t...
journal_title:Journal of endourology
pub_type: 杂志文章,评审
doi:10.1089/089277903322518617
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journal_title:Journal of endourology
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doi:10.1089/end.1994.8.183
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abstract::The appropriate position of the hand-access device and trocars for hand-assisted laparoscopic surgery depends on several factors, including the surgeon's preference, physical stature, and handedness; the patient's anatomy; and the type of procedure being performed. This article reviews the options, including measures ...
journal_title:Journal of endourology
pub_type: 杂志文章,评审
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journal_title:Journal of endourology
pub_type: 杂志文章,随机对照试验
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更新日期:2006-07-01 00:00:00
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pub_type: 杂志文章,评审
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journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2018.0143
更新日期:2018-06-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Kidney stone disease is rare in the South African black (B) population and more prevalent in the white (W) population. Genetic studies have not previously examined this anomaly. The AGT Pro11Leu polymorphism in the alanine:glyoxylate aminotransferase (AGT) enzyme has been suggested as possibly pl...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2013.0617
更新日期:2014-05-01 00:00:00
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journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2008.0209
更新日期:2008-12-01 00:00:00
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journal_title:Journal of endourology
pub_type: 杂志文章
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更新日期:2015-10-01 00:00:00
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journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2006.20.33
更新日期:2006-01-01 00:00:00
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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::Eighteen male patients underwent endoscopic management of urethral obliterations and severe strictures of the subprostatic urethra. Thirteen patients who performed clean urethral self-dilatation after endoscopic repair had a lower incidence of recurrent strictures (P = 0.03) and required fewer visual internal urethrot...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.1996.10.385
更新日期:1996-08-01 00:00:00
abstract:PURPOSE:GreenLight HPS™ laser photoselective vaporization prostatectomy (PVP) is a treatment option for lower urinary tract symptoms secondary to benign prostatic hyperplasia. We review our experience using the 120 W GreenLight HPS laser system. MATERIALS AND METHODS:We prospectively evaluated our experience with Gree...
journal_title:Journal of endourology
pub_type: 临床试验,杂志文章
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更新日期:2011-06-01 00:00:00
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journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/089277902753483718
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更新日期:2003-03-01 00:00:00
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pub_type: 杂志文章
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更新日期:2014-03-01 00:00:00
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journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.1997.11.145
更新日期:1997-04-01 00:00:00
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journal_title:Journal of endourology
pub_type: 杂志文章
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更新日期:2015-07-01 00:00:00
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journal_title:Journal of endourology
pub_type: 杂志文章
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更新日期:2015-10-01 00:00:00
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journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2005.19.748
更新日期:2005-07-01 00:00:00
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journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2008.0528
更新日期:2009-04-01 00:00:00
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journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/089277904322836730
更新日期:2004-02-01 00:00:00
abstract:INTRODUCTION:Routine preoperative electrocardiogram (ECG) before shockwave lithotripsy (SWL) is frequently performed despite recommendations against its use in asymptomatic patients undergoing low-risk surgical procedures. This study assesses whether routine preoperative ECG before SWL is useful in patients at low risk...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2019.0053
更新日期:2019-04-01 00:00:00
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journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2010.0069
更新日期:2010-07-01 00:00:00