Three novel methods to measure the postoperative displacement of lower urinary tract structures following radical prostatectomy in a sample of Korean patients
Abstract Background There is a change in the position of the remaining anatomical structures of the lower urinary tract system following radical prostatectomy. The aims of this investigation were to describe three novel methods used to measure the displacement of i) the vesico-urethral junction (VUJ...
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| Format: | Article |
| Language: | English |
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BMC
2019-06-01
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| Series: | BMC Urology |
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| Online Access: | http://link.springer.com/article/10.1186/s12894-019-0472-6 |
| _version_ | 1818027693767131136 |
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| author | Hong Koo Ha Henk B. Luiting Petra L. Graham Manish I. Patel Jaspreet S. Sandhu Oguz Akin Sean F. Mungovan |
| author_facet | Hong Koo Ha Henk B. Luiting Petra L. Graham Manish I. Patel Jaspreet S. Sandhu Oguz Akin Sean F. Mungovan |
| author_sort | Hong Koo Ha |
| collection | DOAJ |
| description | Abstract Background There is a change in the position of the remaining anatomical structures of the lower urinary tract system following radical prostatectomy. The aims of this investigation were to describe three novel methods used to measure the displacement of i) the vesico-urethral junction (VUJ), proximal membranous urethra (PMU) and anorectal junction (ARJ) and ii) the VUJ angle of displacement in men following radical prostatectomy and determine their intra- and interrater reliability. Methods Retrospective comparative measurement of twenty pre- and postoperative MRI scans was undertaken by one observer on two separate occasions and on one occasion by another observer. Three standardized midsagittal pelvimetry reference lines were used to describe three X, Y axis measurement systems. The displacement (mm) of the VUJ, PMU and ARJ, and the angle of displacement (degrees) of the VUJ was measured for each of the three methods. Interrater reliability of VUJ, PMU and ARJ displacement and the VUJ angle of displacement measurements was assessed using a two-way mixed-effects agreement intra-class correlation coefficient (ICC) with 95% confidence intervals (CI). Test-retest (intrarater) reliability was calculated using a two-way random effects consistency ICC with 95% CI for all displacement measures of the VUJ, PMU and ARJ for one observer between two days. Results The pubococcygeal line (PCL) axis measurement system demonstrated good to excellent intrarater and interrater reliability (ICC 95% interval lower bound > 0.75) for the VUJ and PMU displacement and the VUJ angle of displacement measurements. Other measurement systems were less reliable and more variable. Conclusions In this sample of 20 Korean patients with median prostate volume 27.5 mL and maximum volume 70 mL, the measurement methodology using the PCL consistently demonstrated good to excellent reliability and the lowest variability for the measurement of the displacement of the VUJ and PMU and the VUJ angle of displacement. The PCL methodology is recommended as the method of choice. Further studies should validate these results in patients with large prostate volumes. |
| first_indexed | 2024-12-10T04:51:58Z |
| format | Article |
| id | doaj.art-1a10e92baf3d49539a5fce9540da8d02 |
| institution | Directory Open Access Journal |
| issn | 1471-2490 |
| language | English |
| last_indexed | 2024-12-10T04:51:58Z |
| publishDate | 2019-06-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Urology |
| spelling | doaj.art-1a10e92baf3d49539a5fce9540da8d022022-12-22T02:01:35ZengBMCBMC Urology1471-24902019-06-011911910.1186/s12894-019-0472-6Three novel methods to measure the postoperative displacement of lower urinary tract structures following radical prostatectomy in a sample of Korean patientsHong Koo Ha0Henk B. Luiting1Petra L. Graham2Manish I. Patel3Jaspreet S. Sandhu4Oguz Akin5Sean F. Mungovan6Department of Urology, Pusan National University HospitalThe Clinical Research InstituteCentre for Economic Impacts of Genomic Medicine (GenIMPACT), Macquarie UniversityDepartment of Urology, Westmead HospitalUrology Service, Department of Surgery, Memorial Sloan- Kettering Cancer CenterDepartment of Radiology, Memorial Sloan- Kettering Cancer CenterThe Clinical Research InstituteAbstract Background There is a change in the position of the remaining anatomical structures of the lower urinary tract system following radical prostatectomy. The aims of this investigation were to describe three novel methods used to measure the displacement of i) the vesico-urethral junction (VUJ), proximal membranous urethra (PMU) and anorectal junction (ARJ) and ii) the VUJ angle of displacement in men following radical prostatectomy and determine their intra- and interrater reliability. Methods Retrospective comparative measurement of twenty pre- and postoperative MRI scans was undertaken by one observer on two separate occasions and on one occasion by another observer. Three standardized midsagittal pelvimetry reference lines were used to describe three X, Y axis measurement systems. The displacement (mm) of the VUJ, PMU and ARJ, and the angle of displacement (degrees) of the VUJ was measured for each of the three methods. Interrater reliability of VUJ, PMU and ARJ displacement and the VUJ angle of displacement measurements was assessed using a two-way mixed-effects agreement intra-class correlation coefficient (ICC) with 95% confidence intervals (CI). Test-retest (intrarater) reliability was calculated using a two-way random effects consistency ICC with 95% CI for all displacement measures of the VUJ, PMU and ARJ for one observer between two days. Results The pubococcygeal line (PCL) axis measurement system demonstrated good to excellent intrarater and interrater reliability (ICC 95% interval lower bound > 0.75) for the VUJ and PMU displacement and the VUJ angle of displacement measurements. Other measurement systems were less reliable and more variable. Conclusions In this sample of 20 Korean patients with median prostate volume 27.5 mL and maximum volume 70 mL, the measurement methodology using the PCL consistently demonstrated good to excellent reliability and the lowest variability for the measurement of the displacement of the VUJ and PMU and the VUJ angle of displacement. The PCL methodology is recommended as the method of choice. Further studies should validate these results in patients with large prostate volumes.http://link.springer.com/article/10.1186/s12894-019-0472-6DisplacementMeasurementReliabilityUrethraUrinary tractMagnetic resonance imaging |
| spellingShingle | Hong Koo Ha Henk B. Luiting Petra L. Graham Manish I. Patel Jaspreet S. Sandhu Oguz Akin Sean F. Mungovan Three novel methods to measure the postoperative displacement of lower urinary tract structures following radical prostatectomy in a sample of Korean patients BMC Urology Displacement Measurement Reliability Urethra Urinary tract Magnetic resonance imaging |
| title | Three novel methods to measure the postoperative displacement of lower urinary tract structures following radical prostatectomy in a sample of Korean patients |
| title_full | Three novel methods to measure the postoperative displacement of lower urinary tract structures following radical prostatectomy in a sample of Korean patients |
| title_fullStr | Three novel methods to measure the postoperative displacement of lower urinary tract structures following radical prostatectomy in a sample of Korean patients |
| title_full_unstemmed | Three novel methods to measure the postoperative displacement of lower urinary tract structures following radical prostatectomy in a sample of Korean patients |
| title_short | Three novel methods to measure the postoperative displacement of lower urinary tract structures following radical prostatectomy in a sample of Korean patients |
| title_sort | three novel methods to measure the postoperative displacement of lower urinary tract structures following radical prostatectomy in a sample of korean patients |
| topic | Displacement Measurement Reliability Urethra Urinary tract Magnetic resonance imaging |
| url | http://link.springer.com/article/10.1186/s12894-019-0472-6 |
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