Measurements of urinary bladder volume: comparison of five ultrasound calculation methods in volunteers.

摘要: Objectives: To assess the precision of five different calculation methods in real-time bladder volume measurement. Material and methods: Bladders from 10 medical staff volunteers were examined. Two examinations each subject performed by one examiner using same ultrasound scannet Five algorithms used on frozen pictures: prolate ellipsoid method based formula: = length x width heigth 0.52 two dimensions; double area ex [C1 + C2 ln(A1) C3 ln(A2)] The dimension shape outlined manually with maximal longitudinal diameter; smooth diameter After registration voided subjects scanned again order to assure complete emptying. Results: Voided volumes ranged 120 ml 465 ml. was equal. Errors not more than 25% volume. No significant improvement accuracy for any found. Conclusions: Ultrasound is an easy estimation can be reasonably accepted. Large variation, irrespective methods, true volume, indicates that clinical evaluation measurement must interpreted great care some patients.