The value of three-dimensional helical computed tomography for the retrograde flexible ureteronephroscopy in the treatment of lower pole calyx stones

Objective: The aim of our study was to determine if there is any advantage of three-dimensional helical computed tomography (3D-HCT) over intravenous urogram (IVU) for the retrograde flexible ureteronephroscopy in the treatment of lower pole calyx stones. Methods: From June 2012 to January 2014, a t...

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Autores principales:	Yan Xu, Jian-Lin Lyu
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2016
Materias:	Medicine (General) R5-920
Acceso en línea:	https://doaj.org/article/8c905af5f8204483a44f07cad69baebb
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spelling	oai:doaj.org-article:8c905af5f8204483a44f07cad69baebb2021-12-02T12:52:11ZThe value of three-dimensional helical computed tomography for the retrograde flexible ureteronephroscopy in the treatment of lower pole calyx stones2095-882X10.1016/j.cdtm.2016.02.001https://doaj.org/article/8c905af5f8204483a44f07cad69baebb2016-03-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2095882X16000049https://doaj.org/toc/2095-882XObjective: The aim of our study was to determine if there is any advantage of three-dimensional helical computed tomography (3D-HCT) over intravenous urogram (IVU) for the retrograde flexible ureteronephroscopy in the treatment of lower pole calyx stones. Methods: From June 2012 to January 2014, a total of 52 cases of lower pole renal stones underwent retrograde intrarenal surgery (RIRS) in our center. All patients underwent a preoperative IVU and three-dimensional helical computed tomography urography (3D-CTU) program to define the collecting system anatomy, manly concerning the following lower pole features; infundibu-lopelvic angle (IPA), infundibular length (IL), and infundibular width (IW). The examinations were performed in the same center of reference with a standardized method and with 3D-HCT Siemens Somaton Plus equipment. The measurements were performed by the same researcher, using a ruler and a square. Results: Based on clinical threshold difference of the anatomic factors on an IVU image to compare the difference between an IVU image and a 3D-CT image of 52 patients, the IPA was <30Â° when measured on intravenous pyelography (IVP) for 21 patients. We found that with the IPA of <30Â° measured with IVP only 19% (4/21) were correctly classified in the same size category using 3D-HCT, whereas 81% (17/21) were upgraded to 40â50Â° on 3D-CT. This difference was significant between IVP and 3D-HCT. Conclusions: 3D-HCT has advantages over IVU when analyzing the morphometric and the morphological features of kidney lower pole spatial anatomy for the retrograde flexible ureteronephroscopy in the treatment of lower pole calyx stones. Keywords: Intravenous urogram, Computed tomography urography, Flexible ureterorenoscopy, Lower pole, Renal stonesYan XuJian-Lin LyuKeAi Communications Co., Ltd.articleMedicine (General)R5-920ENChronic Diseases and Translational Medicine, Vol 2, Iss 1, Pp 42-47 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine (General) R5-920
spellingShingle	Medicine (General) R5-920 Yan Xu Jian-Lin Lyu The value of three-dimensional helical computed tomography for the retrograde flexible ureteronephroscopy in the treatment of lower pole calyx stones
description	Objective: The aim of our study was to determine if there is any advantage of three-dimensional helical computed tomography (3D-HCT) over intravenous urogram (IVU) for the retrograde flexible ureteronephroscopy in the treatment of lower pole calyx stones. Methods: From June 2012 to January 2014, a total of 52 cases of lower pole renal stones underwent retrograde intrarenal surgery (RIRS) in our center. All patients underwent a preoperative IVU and three-dimensional helical computed tomography urography (3D-CTU) program to define the collecting system anatomy, manly concerning the following lower pole features; infundibu-lopelvic angle (IPA), infundibular length (IL), and infundibular width (IW). The examinations were performed in the same center of reference with a standardized method and with 3D-HCT Siemens Somaton Plus equipment. The measurements were performed by the same researcher, using a ruler and a square. Results: Based on clinical threshold difference of the anatomic factors on an IVU image to compare the difference between an IVU image and a 3D-CT image of 52 patients, the IPA was <30Â° when measured on intravenous pyelography (IVP) for 21 patients. We found that with the IPA of <30Â° measured with IVP only 19% (4/21) were correctly classified in the same size category using 3D-HCT, whereas 81% (17/21) were upgraded to 40â50Â° on 3D-CT. This difference was significant between IVP and 3D-HCT. Conclusions: 3D-HCT has advantages over IVU when analyzing the morphometric and the morphological features of kidney lower pole spatial anatomy for the retrograde flexible ureteronephroscopy in the treatment of lower pole calyx stones. Keywords: Intravenous urogram, Computed tomography urography, Flexible ureterorenoscopy, Lower pole, Renal stones
format	article
author	Yan Xu Jian-Lin Lyu
author_facet	Yan Xu Jian-Lin Lyu
author_sort	Yan Xu
title	The value of three-dimensional helical computed tomography for the retrograde flexible ureteronephroscopy in the treatment of lower pole calyx stones
title_short	The value of three-dimensional helical computed tomography for the retrograde flexible ureteronephroscopy in the treatment of lower pole calyx stones
title_full	The value of three-dimensional helical computed tomography for the retrograde flexible ureteronephroscopy in the treatment of lower pole calyx stones
title_fullStr	The value of three-dimensional helical computed tomography for the retrograde flexible ureteronephroscopy in the treatment of lower pole calyx stones
title_full_unstemmed	The value of three-dimensional helical computed tomography for the retrograde flexible ureteronephroscopy in the treatment of lower pole calyx stones
title_sort	value of three-dimensional helical computed tomography for the retrograde flexible ureteronephroscopy in the treatment of lower pole calyx stones
publisher	KeAi Communications Co., Ltd.
publishDate	2016
url	https://doaj.org/article/8c905af5f8204483a44f07cad69baebb
work_keys_str_mv	AT yanxu thevalueofthreedimensionalhelicalcomputedtomographyfortheretrogradeflexibleureteronephroscopyinthetreatmentoflowerpolecalyxstones AT jianlinlyu thevalueofthreedimensionalhelicalcomputedtomographyfortheretrogradeflexibleureteronephroscopyinthetreatmentoflowerpolecalyxstones AT yanxu valueofthreedimensionalhelicalcomputedtomographyfortheretrogradeflexibleureteronephroscopyinthetreatmentoflowerpolecalyxstones AT jianlinlyu valueofthreedimensionalhelicalcomputedtomographyfortheretrogradeflexibleureteronephroscopyinthetreatmentoflowerpolecalyxstones
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The value of three-dimensional helical computed tomography for the retrograde flexible ureteronephroscopy in the treatment of lower pole calyx stones

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