Sagittal Long-Axis Bladder Diameter and CT-Measured Bladder Wall Thickness in Healthy Female Patients.
4 affiliations
- 1Department of Biological Sciences, Augusta University, Augusta, USA.
- 2Department of Science, St. Johns Country Day School, Orange Park, USA.
- 3Department of Urology, Medical College of Georgia, Augusta University, Augusta, USA.
- 4Division of Abdominal and Pelvic Radiology, Department of Radiology and Imaging, Medical College of Georgia, Wellstar MCG Health, Augusta University, Augusta, USA.
Abstract
Objective
The objective of this study is to evaluate the association between CT-measured bladder wall thickness (BWT) and sagittal long-axis bladder diameter (SL), defined as the largest midsagittal luminal bladder diameter, in female patients without documented bladder disease or urinary symptoms, using SL as a practical indicator of bladder distension.Methods
This retrospective study included 111 patients aged 16 years or older. An experienced abdominal radiologist measured BWT perpendicular to the anterior wall at the contact point of the SL measurement. Analyses included five descriptive SL categories, analysis of variance with Tukey testing, Pearson correlation, and linear and log-log regression. Post hoc age-adjusted models used heteroscedasticity-consistent type 3 (HC3) standard errors; sensitivity analyses examined an age cutoff of 18 years and omission of the largest SL observation.Results
Mean BWT was 3.50 mm and mean SL was 62.05 mm. SL was inversely correlated with BWT (r = -0.51; P < 0.001). Mean BWT decreased from 6.00 mm in the 10-<30-mm category to 1.90 mm in the ≥90-mm category (F = 11.26; P < 0.001). Age was not significantly correlated with BWT (r = 0.035; P = 0.714). After age adjustment, the SL association persisted (coefficient, -0.0398 mm/mm; 95% CI, -0.0604 to -0.0193; P < 0.001), whereas the age coefficient was not significant (P = 0.528). Both sensitivity analyses retained the inverse SL-BWT association.Conclusion
CT-measured BWT decreased as SL increased in female patients. Building on prior evidence relating SL to bladder volume, these findings support recording SL alongside BWT to describe wall thickness in relation to bladder distension. Reader reproducibility and diagnostic usefulness require further evaluation; the descriptive categories do not establish clinical thresholds.
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BibTeX
@article{feinberg2026sagittal,
title = {{Sagittal Long-Axis Bladder Diameter and CT-Measured Bladder Wall Thickness in Healthy Female Patients.}},
author = {Gavin L Feinberg and Celine Torkzad and Martha K Terris and Pardeep K Mittal and Michael R Torkzad},
journal = {Cureus},
year = {2026},
month = sep,
doi = {10.7759/cureus.116549},
url = {https://europepmc.org/article/MED/42898992},
note = {CC BY},
}
RIS
TY - JOUR
TI - Sagittal Long-Axis Bladder Diameter and CT-Measured Bladder Wall Thickness in Healthy Female Patients.
AU - Gavin L Feinberg
AU - Celine Torkzad
AU - Martha K Terris
AU - Pardeep K Mittal
AU - Michael R Torkzad
PY - 2026
DA - 2026/09/19
JO - Cureus
DO - 10.7759/cureus.116549
UR - https://europepmc.org/article/MED/42898992
AB - Objective The objective of this study is to evaluate the association between CT-measured bladder wall thickness (BWT) and sagittal long-axis bladder diameter (SL), defined as the largest midsagittal luminal bladder diameter, in female patients without documented bladder disease or urinary symptoms, using SL as a practical indicator of bladder distension.Methods This retrospective study included 111 patients aged 16 years or older. An experienced abdominal radiologist measured BWT perpendicular to the anterior wall at the contact point of the SL measurement. Analyses included five descriptive SL categories, analysis of variance with Tukey testing, Pearson correlation, and linear and log-log regression. Post hoc age-adjusted models used heteroscedasticity-consistent type 3 (HC3) standard errors; sensitivity analyses examined an age cutoff of 18 years and omission of the largest SL observation.Results Mean BWT was 3.50 mm and mean SL was 62.05 mm. SL was inversely correlated with BWT (r = -0.51; P < 0.001). Mean BWT decreased from 6.00 mm in the 10-<30-mm category to 1.90 mm in the ≥90-mm category (F = 11.26; P < 0.001). Age was not significantly correlated with BWT (r = 0.035; P = 0.714). After age adjustment, the SL association persisted (coefficient, -0.0398 mm/mm; 95% CI, -0.0604 to -0.0193; P < 0.001), whereas the age coefficient was not significant (P = 0.528). Both sensitivity analyses retained the inverse SL-BWT association.Conclusion CT-measured BWT decreased as SL increased in female patients. Building on prior evidence relating SL to bladder volume, these findings support recording SL alongside BWT to describe wall thickness in relation to bladder distension. Reader reproducibility and diagnostic usefulness require further evaluation; the descriptive categories do not establish clinical thresholds.
SN - 2168-8184
ER -