geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Comparison of real-time ultrasonography and magnetic resonance imaging in the assessment of urinary bladder volume


, : Comparison of real-time ultrasonography and magnetic resonance imaging in the assessment of urinary bladder volume. British Journal Of Urology. 78(6): 856-861

Objective: To compare estimates of bladder volume obtained by conventional real-time ultrasonography with those obtained from magnetic resonance imaging (MRI) by the Cavalieri method of unbiased stereology. Subjects and methods: The study comprised nine subjects (four men and five women, mean age 23 years, range 18-34) with no history of bladder disease. Before micturition, each volunteer underwent ultrasonography, immediately followed by MRI. The volunteers then voided, the true voided volume of urine was measured and the imaging protocols were repeated in the same order after micturition. The bladder volume was estimated from ultrasonography using the formula; volume = 0.7 (L times TS times AP), (where L is the maximum supero-inferior diameter, AP the maximum anteroposterior diameter and TS the maximum transverse diameter) and from MRI using the Cavalieri method. For each imaging modality, the volume of urine voided was estimated as the difference in the volume estimate before and after micturition. Results: The mean percentage coefficient of variation for the estimates of bladder volume by ultrasonography was 2.17 before and 4.43 after micturition. There was no significant difference in the replicate estimates of each bladder diameter by ultrasonography before and after micturition (P=0.98). The MRI method consistently underestimated the voided volume; the mean discrepancy between the estimated voided volume and the true voided volume was 7.7 mL and -67.7 mL for the ultrasonographic and MRI estimates, respectively, which are significantly different (P=0.02) when assessed using a multifactor ANOVA. Further analysis using multiple-range tests showed a significant difference between the voided volume estimated by MRI and the corresponding true voided volume. There was no difference between the voided volume estimated by ultrasonography and the corresponding true volume. Conclusion: Ultrasonographic estimates of voided volume were more reliable than the those obtained using the MRI method. This is possibly due to a delay between micturition and the acquisition of MR images after micturition, which allowed the bladder to partly refill with urine. The empirical approach using measurements from ultrasonograms provides a fast and reliable technique; ultrasonography remains the recommended imaging modality for estimating bladder volume.

US$19.90

PMID: 9014708

DOI: 10.1046/j.1464-410x.1996.02398.x


Other references

Caton, R., 1904: The Harveian Oration on I. -I-EM-HOTEP, the Egyptian God of Medicine; Egyptian Views as to the Circulation. II.-Rest in Incipient Valvular Disease: Delivered at the Royal College of Physicians of London on Tuesday, June 21st. British Medical Journal 1(2269): 1473-1477

Traenapp, H., 2003: Performance assessment in intensive care: differences become visible). Pflege Zeitschrift 56(9): 656-660

Simorre, M.; Lopes, P.; L.V.illant, C., 2016: What signs should you look for ultrasound (2D/3D) to affirm the good location of tubal implants? About a retrospective study of 92 cases. The aim of this study is to propose an analysis of the route and the curvature of the Essure<sup>®</sup> system in 3D ultrasound to determine their correct location so as not to miss a tubal perforation. This is a retrospective singl...

Warren, C., 2005: Little pamphlets and big lies: federal authorities respond to childhood lead poisoning, 1935-2003. Public Health Reports 120(3): 322-329

Sobrero A.; Pizzorno G.; Romanini A.; Russello O.; Rosso R.; Civalleri D.; Simoni G.; Darnowski J.; Handschumacher R.E., 1987: Plasma and tissue uridine urd levels in canine and human subjects. Proceedings of the American Association for Cancer Research Annual Meeting 28: 413

Sato, T.; Hirose, Y.; Yoshioka, D.; Shimojo, T.; Oi, S., 2014: 1,2,4-Triazol-3-ylidenes with an N-2,4-dinitrophenyl substituent as strongly π-accepting N-heterocyclic carbenes. The synthesis and characterisation of a series of new Rh and Au complexes bearing 1,2,4-triazol-3-ylidenes with a N-2,4-dinitrophenyl (N-DNP) substituent are described. IR, NMR, single-crystal X-ray diffraction and computational analyses of the Rh...

Grubelic, Ivana., 2004: Dr. sc. Ante Simunovic 1934-2004. Acta Adriatica, 452: 115-120

Wang, S.; Li, H.; Sawada, H.; Allen, C.S.; Kirkland, A.I.; Grossman, J.C.; Warner, J.H., 2017: Atomic structure and formation mechanism of sub-nanometer pores in 2D monolayer MoS 2. We use electron-beam nanofabrication to create sub-nanometer (sub-nm) pores in 2D monolayer MoS<sub>2</sub> with fine control over the pore size down to 0.6 nm, corresponding to the loss of a single Mo atom and surrounding S atoms. The...

Schacht M.J.; Niederberger C.S.; Garnett J.E.; Sensibar J.A.; Lee C.; Grayhack J.T., 1992: A local direct effect of pituitary graft on growth of the lateral prostate in rats. Prolactin and testosterone are synergistic in stimulating growth of the rat prostate. The lateral lobe is more sensitive to this synergism than the ventral and dorsal lobes. To investigate whether prolactin acts directly in the rat prostate or ind...

van Leusden, M.R.; Pas, H.H.; Gedde-Dahl, T.; Sonnenberg, A.; Jonkman, M.F., 2001: Truncated typeXVII collagen expression in a patient with non-herlitz junctional epidermolysis bullosa caused by a homozygous splice-site mutation. Type XVII collagen (180-kDa bullous pemphigoid antigen) is a structural component of hemidesmosomes. Mutations in the type XVII collagen gene (COL17A1) have been established to be the molecular basis of non-Herlitz junctional epidermolysis bullosa...