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KMID : 1164220190310020007
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Journal of Korean Society for Radiotherapeutic Technology
2019 Volume.31 No. 2 p.7 ~ p.12
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A comparison of bladder volume by sonogram and CBCT for Pelvic region cancer
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Son Seong-Ho
Park Ha-Ryung
Baek Jung-Jin
Son Jong-Ki
Choi Min-Ho
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Abstract
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Purpose: During the pelvic radiation therapy, it is performed with controlling bladder volume because the range of irradiation is changed depending on the bladder volume. Therefore in this study, we evaluate the accuracy of BVI by tracing the change of bladder volume using ultrasonic pulse diagnosis equipment(BVI 6100, Medical supply Co. LTD)
Material and Methods: From January 2017 to September 2018, 19 patients who received pelvic radiation therapy at Pusan National University Hospital were included. To treat the patient, we compared that the bladder volume obtained from the BVI and the bladder volume obtained from the CBCT image then we evaluated for significance.
Results: There was a significant correlation of r=0.773, BVI and CBCT in the whole volume section. However, based on the bladder volume in the RTP Image the p value was shown to be 0 at 125~175cc and lower than 0.05 at 175~275cc, And more than 0.05 at 275~375cc.
Conclusions: In this study, the patient whose bladder volume is above than 275cc, there is a significance of bladder volume between BVI and CBCT image. However, we could make a decision to be undermined the reliability of BVI measurement in the case of the patient with emptied his urine. Therefore, it is possible to acquire a significant value for 175~275cc patients to use the correction value of BVI and the appropriate tolerance of volume.
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KEYWORD
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Pelvic region radiation therapy, CBCT, BVI, Sonogram, Bladder volume
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