Feasibility of approximate measurement of bladder volume in male patients using the Lilium α‐200 portable ultrasound bladder scanner

2019 ◽  
Vol 11 (3) ◽  
pp. 169-173 ◽  
Author(s):  
Jun Kamei ◽  
Daiji Watanabe ◽  
Yukio Homma ◽  
Haruki Kume ◽  
Yasuhiko Igawa
Keyword(s):  
Bladder Volume ◽  
Portable Ultrasound ◽  
Male Patients ◽  
Bladder Scanner ◽  
Approximate Measurement

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

2020 ◽  
Vol 61 (6) ◽  
pp. 613
Author(s):  
Tsuyoshi Majima ◽  
Yumi Oota ◽  
Yoshihisa Matsukawa ◽  
Yasuhito Funahashi ◽  
Masashi Kato ◽  
...  
Keyword(s):  
Volume Measurement ◽  
Bladder Volume ◽  
Portable Ultrasound ◽  
Bladder Scanner

scholarly journals Simple calculation using anatomical features on pre-treatment verification CT for bladder volume estimation during radiation therapy for rectal cancer

BMC Cancer ◽  
2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Nalee Kim ◽  
Hong In Yoon ◽  
Jin Sung Kim ◽  
Woong Sub Koom ◽  
Jee Suk Chang ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Cone Beam Ct ◽  
Ct Images ◽  
Volume Estimation ◽  
Bladder Volume ◽  
Cone Beam ◽  
Anatomical Features ◽  
Treatment Verification ◽  
Pre Treatment ◽  
Bladder Scanner

Abstract Background Despite detailed instruction for full bladder, patients are unable to maintain consistent bladder filling during a 5-week pelvic radiation therapy (RT) course. We investigated the best bladder volume estimation procedure for verifying consistent bladder volume. Methods We reviewed 462 patients who underwent pelvic RT. Biofeedback using a bladder scanner was conducted before simulation and during treatment. Exact bladder volume was calculated by bladder inner wall contour based on CT images (Vctsim). Bladder volume was estimated either by bladder scanner (Vscan) or anatomical features from the presacral promontory to the bladder base and dome in the sagittal plane of CT (Vratio). The feasibility of Vratio was validated using daily megavoltage or kV cone-beam CT before treatment. Results Mean Vctsim was 335.6 ± 147.5 cc. Despite a positive correlation between Vctsim and Vscan (R2 = 0.278) and between Vctsim and Vratio (R2 = 0.424), Vratio yielded more consistent results than Vscan, with a mean percentage error of 26.3 (SD 19.6, p < 0.001). The correlation between Vratio and Vctsim was stronger than that between Vscan and Vctsim (Z-score: − 7.782, p < 0.001). An accuracy of Vratio was consistent in megavoltage or kV cone-beam CT during treatment. In a representative case, we can dichotomize for clinical scenarios with or without bowel displacement, using a ratio of 0.8 resulting in significant changes in bowel volume exposed to low radiation doses. Conclusions Bladder volume estimation using personalized anatomical features based on pre-treatment verification CT images was useful and more accurate than physician-dependent bladder scanners. Trial registration Retrospectively registered.

Interfractional variation in bladder volume and its impact on cervical cancer radiotherapy: Clinical significance of portable bladder scanner

2016 ◽  
Vol 43 (7) ◽  
pp. 4412-4419 ◽  
Author(s):  
Huanli Luo ◽  
Fu Jin ◽  
Dingyi Yang ◽  
Ying Wang ◽  
Chao Li ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Clinical Significance ◽  
Bladder Volume ◽  
Cancer Radiotherapy ◽  
Bladder Scanner

Bladder Volume Determination Using a Dedicated, Portable Ultrasound Scanner

1990 ◽  
Vol 143 (5) ◽  
pp. 909-911 ◽  
Author(s):  
Robert C. Ireton ◽  
John N. Krieger ◽  
Diana D. Cardenas ◽  
Bruce Williams-Burden ◽  
Eve Kelly ◽  
...  
Keyword(s):  
Bladder Volume ◽  
Volume Determination ◽  
Portable Ultrasound ◽  
Ultrasound Scanner
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