Koczyński A
Probl Med Wieku Rozwoj. 1982;11:97-102.
The x-ray pictures have principal significance in the clinical estimation of morphology of the skeleton. Roentgenometrical investigations of second metacarpal bone allow to assess the value of PCA (percentage cortical area), which is adequate to the mineral contents of the bone structure. PCA value of 100 equals the density of 2,3 g/cm3. The standard values of PCA and density equivalents were established in a group of 600 healthy children. The study was based on a group of 50 sick children aged from 1 to 16 years. The urolithiasis in all cases was diagnosed and all children were treated in the National Research Institute of Mother and Child in the years 1978-1979. The concrements in all cases contained the calcium salts as the main component. In 32 cases the following mixed stones: whewellite and weddellite, struvite and apatite, brushite and apatite, struvite and oxalate were found out. It was stated on the ground of mineralogical examinations that one component clearly preponderated the other ones.
X 光片在骨骼形态的临床评估中具有重要意义。对第二掌骨进行 X 线测量研究能够评估 PCA（皮质面积百分比）的值，该值与骨结构的矿物质含量相当。PCA 值为 100 相当于密度为 2.3 g/cm³。在一组 600 名健康儿童中确定了 PCA 和密度当量的标准值。该研究基于一组 50 名年龄在 1 至 16 岁的患病儿童。所有病例的尿路结石均被诊断出来，并且所有儿童在 1978 年至 1979 年期间在国家母婴研究所接受治疗。所有病例中的结石均以钙盐为主要成分。在 32 例病例中发现了以下混合结石：草酸钙石和二水草酸钙石、磷酸铵镁和磷灰石、透钙磷石和磷灰石、磷酸铵镁和草酸盐。根据矿物学检查表明，一种成分明显比其他成分占优势。
