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

Intravesical bladder volume measurement: device design and testing

2006 ◽  
Vol 39 ◽  
pp. S636
Author(s):  
P.C. Fletter ◽  
B.C. Gill ◽  
P. Zaszczurynski ◽  
A. Perlin ◽  
D. Yachia ◽  
...  
Keyword(s):  
Volume Measurement ◽  
Bladder Volume ◽  
Device Design ◽  
Measurement Device ◽  
Design And Testing

Accuracy and Repeatability of Bladder Volume Measurement Using Ultrasonic Imaging

1986 ◽  
Vol 136 (4) ◽  
pp. 808-812 ◽  
Author(s):  
Clive J. Griffiths ◽  
Alan Murray ◽  
Peter D. Ramsden
Keyword(s):  
Ultrasonic Imaging ◽  
Volume Measurement ◽  
Bladder Volume ◽  
Accuracy And Repeatability

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.

Validity of bladder volume measurement by ultrasound in women postpartum

2019 ◽  
Vol 31 (3) ◽  
pp. 643-649
Author(s):  
Josefine Tangen Jensen ◽  
Niels Klarskov ◽  
Jeannet Lauenborg
Keyword(s):  
Volume Measurement ◽  
Bladder Volume
Sign in / Sign up

Export Citation Format

Share Document