Investig Clin Urol.  2020 May;61(3):291-296. 10.4111/icu.2020.61.3.291.

Korean ureter length: A computed tomography–based study

• Jung SI
• Park HS
• Yu MH
• Kim YJ
• Lee H
• Choi WS
• Park HK
• Kim HG
• Paick SH

• KMID: 2500583
• DOI: http://doi.org/10.4111/icu.2020.61.3.291

Abstract

Purpose
We measured ureter length in healthy Koreans using reformatted computed tomography (ULCT) and found ways to indirectly estimate ureter length by measuring LLCT, the length between the ureteropelvic junction and the ureterovesical junction, and standing and sitting height.
Materials and Methods
A total of 508 ureters of 254 healthy patients (median age, 55.0 years; 148 males and 106 females) were included in this retrospective study. ULCT, LLCT, and sitting and standing body height were measured.
Results
The mean left and right ULCT were 25.2±2.2 and 25.0±2.2 cm, respectively. The mean left and right LLCT were 21.1±1.8 and 20.3±1.9 cm, respectively. Standing and sitting body height were 164.1±8.9 and 88.3±4.3 cm, respectively. Height was significantly correlated with ULCT, but this relation was not linear (r2=0.064 standing height, 0.062 sitting height). However, LLCT showed a significant linear correlation with ULCT (r2=0.485). ULCT can be estimated indirectly by the following equation: ULCT=0.823×LLCT+8.093.
Conclusions
We could measure the ureteral length of healthy Koreans by ULCT. ULCT could be estimated indirectly by LLCT and standing and sitting height. Of these variables, LLCT provided the most accurate estimate of ureteral length.

Keyword

Korea; Tomography, x-ray computed; Ureter