渡辺 泱¹, 東 勇志¹, 永井 克弘¹, 四方 裕之², 田上 雄哉², 三浦 まなみ³

Hiroki WATANABE¹, Yuji AZUMA¹, Katsuhiro NAGAI¹, Hiroyuki SHIKATA², Yuya TAGAMI², Manami MIURA³

¹渡辺記念長命研究所, ²日立アロカメディカル大阪支店, ³京都中央看護保健大学校

¹Watanabe Memorial Choumei Research Laboratory, ²Hitachi-Aloka Medical Osaka Branch, ³Kyoto Central Nursing School

キーワード : bladder, capacity measurement, 3D ultrasound, urine absorption, IVUV phenomenon

目的：経腹的3次元超音波を用いて経時的に膀胱容量を測定する方法を確立する．方法および対象：市販の3次元超音波スキャナを安定して下腹部に接着させる器具を新規開発した．18例を対象として測定値の正確性を吟味し，4例を対象として経時的計測の可能性を検討した．結論：この方法は，膀胱容量が実際より平均18％少なめに計測されるものの，これを較正すると誤差は12％以内に収まり，生理学的研究法として十分な実用的価値を有していた．終夜に亘る経時的計測はきわめて安定して実施できた．

Purpose: Establishment of a method for the periodical measurement of bladder capacity by means of abdominal three-dimensional ultrasound. Materials and Methods: Simple devices to fix the three-dimensional ultrasound scanner on the lower abdomen stably were newly developed. The reliability of the method was examined in 18 subjects, while the possibility to apply the method for periodical measurement was tested in 4 subjects. Conclusion: Measured capacities were 18% lower on average than the actual values. When this deviation was corrected, however, the error fell within 12% in every case, which indicated a sufficient accuracy for practical use in physiology. Periodical measurement for overnight sessions was achieved successfully.