BladderScan Feedback Method in Predicting Bladder Filling for Prostate Radiotherapy: A Prospective Study
| Autor: | Deng-Yu Kuo MD, MPH, Chen-Yang Hsu MD, PhD, Wei-Chun Wang MS, Hsiu-Hsi Chen PhD, Pei-Wei Shueng MD |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Technology in Cancer Research & Treatment, Vol 20 (2021) |
| Druh dokumentu: | article |
| ISSN: | 1533-0338 15330338 |
| DOI: | 10.1177/1533033821995277 |
| Popis: | Purpose: Approximately 5%–10% of men who receive prostate cancer radiotherapy will suffer from radiation cystitis. Bladder filling before the administration of radiotherapy results in lower radiation exposure to the bladder. BladderScan, an ultrasound-based bladder volume scanner, has the potential to evaluate bladder volume during radiotherapy; thus, a prospective pilot study was initiated. Methods: Eleven men receiving tomotherapy for localized prostate cancer were enrolled. The validity of BladderScan was evaluated by comparing the measurements from BladderScan with the calculated volume from megavoltage computed tomography (MVCT). With a crossover design to compare different methods in bladder filling, the radiotherapy was divided into 2 sequences. Conventional method: the patient was asked to drink water after voiding urine. The amount of water and the duration of waiting were the same as in the setting of the simulation. BladderScan feedback method: the bladder filling procedure depended on the BladderScan measurements. Results: There were 314 sets of data from 11 patients. The correlation coefficient between V BS and V CT was 0.87, where V BS is the mean volume of 3 measurements by BladderScan and V CT is the bladder volume derived from MVCT. The BladderScan feedback method resulted in a significant larger bladder volume than the conventional method, with a mean difference of 36.9 mL. When the failure was defined as V CT |
| Databáze: | Directory of Open Access Journals |
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