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        Feasibility of the Lilium α-200 portable ultrasound bladder scanner for accurate bladder volume measurement

        Tsuyoshi Majima,Yumi Oota,Yoshihisa Matsukawa,Yasuhito Funahashi,Masashi Kato,Hiromitsu Mimata,Momokazu Gotoh 대한비뇨의학회 2020 Investigative and Clinical Urology Vol.61 No.6

        Purpose: The aim of this study was to investigate whether data obtained from the Lilium α-200 (Lilium Otsuka Co., Ltd., Japan) correlated with conventional frequency-volume chart (FVC) and post-void residual urine volume (PVR) obtained by urethral catheterization. Materials and Methods: This was a prospective multicentre study. Patients hospitalized for the treatment of lower urinary tract symptoms were included. Patients were evaluated with conventional FVC and Lilium α-200 for 2 days. PVR was measured by urethral catherization after urination at the end of the 2 day evaluation period. Results: A total of 42 patients were enrolled in this study. Voided volume and PVR measured by Lilium α-200 were significantly correlated with voided volume obtained from conventional FVC and PVR measured by urethral catheterization, respectively. There was considerable measurement error in voided volume measured by Lilium α-200 (−21.0±102.0 mL). In contrast, the error between PVR measured by the Lilium α-200 and PVR obtained by urethral catheterization was 2.4±52.0 mL. Additionally, high body mass index, but not sex, benign prostate hyperplasia, time zone of measurement (daytime vs. nighttime), and examiners (a urologist versus other healthcare providers) were significantly associated with inaccurate results in voided volume. Conclusions: Voided volume and PVR measured by the Lilium α-200 were correlated with voided volume obtained from conventional FVC and PVR measured by urethral catheterization, although accuracy of the measurements was not high. The Lilium α-200 is a useful device to easily measure approximate bladder volume.

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