Burgos F J, Bustillo J, Sáez J C, Mayayo T, Páramo P, Diez Yanguas J, Sanz J, Avila S, Sánchez J A, Minaya A
Unidad de Litotricia (URSA), Clínica Loreto, Madrid.
Actas Urol Esp. 1993 Jul;17(7):421-9.
The present experimental 'in vitro' study pursues the development of mathematical equations which, prior to lithofragmentation, would allow to estimate the amount of energy required and to predict the degree of fragmentation for each of the different sources of energy. A total of 114 calculi with 6 different compositions were analyzed by conventional X-rays (Rx), computerized axial tomography (CT) and dual X-ray densitometry (DO). Calculi were then fragmented using 4 different types of energy: electrohydraulic (LEH), piezoelectric (LEP), ultrasounds (US) and pulse laser (LAS). The correlation between imaging techniques parameters on the one side, and the amount of energy used and degree of fragmentation obtained on the other one, allow with a multiple linear regression analysis, both to develop mathematical equations to estimate the amount of energy required, and to predict the fragmentation rate.
目前这项“体外”实验研究致力于开发数学方程，在进行碎石术之前，该方程能够估算所需能量的量，并预测每种不同能量源的破碎程度。通过传统X射线（Rx）、计算机断层扫描（CT）和双能X线骨密度仪（DO）对总共114颗具有6种不同成分的结石进行了分析。然后使用4种不同类型的能量对结石进行破碎：液电（LEH）、压电（LEP）、超声（US）和脉冲激光（LAS）。一方面，成像技术参数与另一方面所使用的能量量和获得的破碎程度之间的相关性，通过多元线性回归分析，既能够开发用于估算所需能量量的数学方程，又能够预测破碎率。
