Based on the principle of fluid mechanics a mathematical model of the oval gallbladder’smoving boundaries was obtained by CT,radio contrast radiography and B mode echography.Weadopted for the first time in this field...Based on the principle of fluid mechanics a mathematical model of the oval gallbladder’smoving boundaries was obtained by CT,radio contrast radiography and B mode echography.Weadopted for the first time in this field,the finite element method to calculate the transient flow fieldwithin the human gallbladder in vivo and successfully made out the distribution of bile flow withinthe cyst,known as Newtonian fluid and axisymmetric flow.Thus we completed the poineering ofthe bile flow study within the gallbladder,and confirmed the way of the cholelithogenesis withinthe cyst.Theoretically the vortex flow is proved to be the mechanical factor in the formation ofgallbladder stone and several conclusions were drawn from this study:(1)near the axis of thecontacting gallbladder exists an accelerated bile out-flow column;(2)near the central cross-section ofthe flow field there exist two opposed vortex areas,the one which near the axis rotatescounterwise and flows faster;(3)a gross similarity exists between the law of attenuation of bile flowvelocity and the gallbladder contraction;(4)chololithogenesis within the cyst is related to the vortex inthe flow field.展开更多
报告540例胆囊炎和胆石症病例经手术验证的 B 型超声诊断结果:它诊断胆囊炎和胆囊结石的符合率为97.6%,高于胆囊造影术之87.9%,两者间的差别非常显著(P<0.01);在 B 型超声检查中,上述胆囊组的符合率高于胆总管结石组的52.5%,两组间...报告540例胆囊炎和胆石症病例经手术验证的 B 型超声诊断结果:它诊断胆囊炎和胆囊结石的符合率为97.6%,高于胆囊造影术之87.9%,两者间的差别非常显著(P<0.01);在 B 型超声检查中,上述胆囊组的符合率高于胆总管结石组的52.5%,两组间的差别也非常显著(P<0.01)。此外,还根据其中500例胆囊炎和胆囊结石的声象图表现进行了分型和探讨。展开更多
文摘Based on the principle of fluid mechanics a mathematical model of the oval gallbladder’smoving boundaries was obtained by CT,radio contrast radiography and B mode echography.Weadopted for the first time in this field,the finite element method to calculate the transient flow fieldwithin the human gallbladder in vivo and successfully made out the distribution of bile flow withinthe cyst,known as Newtonian fluid and axisymmetric flow.Thus we completed the poineering ofthe bile flow study within the gallbladder,and confirmed the way of the cholelithogenesis withinthe cyst.Theoretically the vortex flow is proved to be the mechanical factor in the formation ofgallbladder stone and several conclusions were drawn from this study:(1)near the axis of thecontacting gallbladder exists an accelerated bile out-flow column;(2)near the central cross-section ofthe flow field there exist two opposed vortex areas,the one which near the axis rotatescounterwise and flows faster;(3)a gross similarity exists between the law of attenuation of bile flowvelocity and the gallbladder contraction;(4)chololithogenesis within the cyst is related to the vortex inthe flow field.
文摘报告540例胆囊炎和胆石症病例经手术验证的 B 型超声诊断结果:它诊断胆囊炎和胆囊结石的符合率为97.6%,高于胆囊造影术之87.9%,两者间的差别非常显著(P<0.01);在 B 型超声检查中,上述胆囊组的符合率高于胆总管结石组的52.5%,两组间的差别也非常显著(P<0.01)。此外,还根据其中500例胆囊炎和胆囊结石的声象图表现进行了分型和探讨。
