{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,20]],"date-time":"2026-09-20T04:54:49Z","timestamp":1789880089692,"version":"4.0.1"},"reference-count":12,"publisher":"Baishideng Publishing Group Inc.","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["World J Radiol"],"abstract":"<jats:p>BACKGROUND<\/jats:p>\n                  <jats:p>Accurate estimation of urinary bladder volume (UBV) is important for diagnosing and managing bladder disorders. Computed tomography (CT) is often used as a reference standard; however, existing measurement methods vary in complexity and efficiency.<\/jats:p>\n                  <jats:p>AIM<\/jats:p>\n                  <jats:p>To determine whether UBV can be accurately estimated on CT using a single sagittal measurement compared with multidimensional measurements and reference volumetric analysis.<\/jats:p>\n                  <jats:p>METHODS<\/jats:p>\n                  <jats:p>CT abdomen-pelvis studies of 80 individuals without urinary tract pathology were retrospectively analyzed. Bladder volume was determined using manual volumetric tracing as the reference standard. Sagittal long axis [sagittal length (SL)], sagittal short axis [sagittal short (SS)], and transverse diameter [right-to-left (RL)] were measured, and single- and multidimensional products (SL, SL \u00d7 SS, SL \u00d7 SS \u00d7 RL) were correlated with reference volume using Pearson correlation coefficients. Linear regression models were derived, and agreement was assessed using Bland-Altman analysis.<\/jats:p>\n                  <jats:p>RESULTS<\/jats:p>\n                  <jats:p>SL demonstrated the strongest single-dimension correlation with bladder volume (r  = 0.92), compared with SS (r  = 0.87) and RL (r  = 0.68). Multidimensional measurements showed slightly higher correlations (SL \u00d7 SS: r  = 0.98; SL \u00d7 SS \u00d7 RL: r  = 0.99). A simplified linear formula was derived: Bladder volume (mL) = 5 \u00d7 SL (mm) - 222. Bland-Altman analysis showed negligible bias and all values within the limits of agreement for the single-dimension model.<\/jats:p>\n                  <jats:p>CONCLUSION<\/jats:p>\n                  <jats:p>UBV can be accurately estimated using a single sagittal CT measurement in healthy individuals. This simplified approach provides a rapid and reproducible alternative to multidimensional methods without meaningful loss of accuracy and may serve as a reference standard for validating ultrasound-based bladder volume estimation.<\/jats:p>","DOI":"10.4329\/wjr.120003","type":"journal-article","created":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T15:38:15Z","timestamp":1780414695000},"source":"Crossref","is-referenced-by-count":1,"title":["Approximation of urinary bladder volume with few measurements on cross-sectional imaging"],"prefix":"10.4329","volume":"18","author":[{"given":"Robert","family":"Nelson","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Celine","family":"Torkzad","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dallas","family":"Sturdevant","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pardeep K","family":"Mittal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael R","family":"Torkzad","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2060","published-online":{"date-parts":[[2026,6,28]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","DOI":"10.1016\/j.juro.2010.06.006"},{"key":"B2","doi-asserted-by":"publisher","DOI":"10.1007\/s00345-013-1030-6"},{"key":"B3","doi-asserted-by":"publisher","DOI":"10.1007\/s00404-013-3092-5"},{"key":"B4","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2702.2010.03281.x"},{"key":"B5","doi-asserted-by":"publisher","DOI":"10.1177\/2309499020905134"},{"key":"B6","unstructured":"Chronic Urinary Retention: Comparative Effectiveness and Harms of Treatments [Internet]. Rockville (MD): Agency for Healthcare Research and Quality (US); 2014 Sep-"},{"key":"B7","unstructured":"Dicuio M, Pomara G, Menchini Fabris F, Ales V, Dahlstrand C, Morelli G. Measurements of urinary bladder volume: comparison of five ultrasound calculation methods in volunteers. Arch Ital Urol Androl 2005; 60-62"},{"key":"B8","doi-asserted-by":"publisher","DOI":"10.1016\/0090-4295(88)90746-7"},{"key":"B9","doi-asserted-by":"publisher","DOI":"10.1016\/j.ultrasmedbio.2003.11.009"},{"key":"B10","doi-asserted-by":"publisher","DOI":"10.1016\/s0735-6757(99)90150-5"},{"key":"B11","unstructured":"Nitti VW, Dmochowski R.   Clinical Evaluation of the Lower Urinary Tract. Vaginal and Vesical Surgery. Netherlands: Elsevier, 2001"},{"key":"B12","doi-asserted-by":"publisher","DOI":"10.1016\/s0003-9993(98)90419-1"}],"container-title":["World Journal of Radiology"],"original-title":[],"link":[{"URL":"https:\/\/www.wjgnet.com\/1949-8470\/full\/v18\/i6\/120003.htm","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.wjgnet.com\/1949-8470\/full\/v18\/i6\/120003.htm","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T01:51:12Z","timestamp":1782352272000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.wjgnet.com\/1949-8470\/full\/v18\/i6\/120003.htm"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,6,28]]},"references-count":12,"journal-issue":{"issue":"6"},"alternative-id":["120003"],"URL":"https:\/\/doi.org\/10.4329\/wjr.120003","relation":{},"ISSN":["1949-8470"],"issn-type":[{"value":"1949-8470","type":"print"}],"subject":[],"published":{"date-parts":[[2026,6,28]]}}}