pQCT骨密度测试仪的优点
我们在维护中国科学院上海药物研究所的pqct动物骨密度仪器已经8年了。至今测试了7000多个样品。这个仪器专门测试大鼠和小鼠。可以测试活体老鼠（测试活体老鼠比测试离体骨有优势），当然，离体的老鼠骨更容易测试了。仪器的X发射源与检测器的距离只有大概9厘米，老鼠放在中间。测试的时候，发射源与检测器绕着老鼠转动1圈，，完成1次切片薄层扫描；然后沿着老鼠的纵向移动一点，发射源与检测器转动1圈，完成第2次切片薄层扫描。再移动一点…..，数据由计算机软件处理，得到精密度很高的骨密度数据。切片薄层的厚度可以选择。这个就是pqct骨密度测试仪。pQCT比DXA先进。 发射源与检测器的距离越近，精密度越高。物理学告诉我们，光的强度与它的距离的平方成反比。2个仪器，发射源与检测器的距离相差1倍，它的强度就是4倍差，如果距离是10倍，强度差就是100倍。再加上光线散射，距离越大，散射越大，检测器得到的结果相差非常大。测试人体的仪器比pqct差远了。
Peripheral quantitative computed tomograph for the measurement at radius or tibia.
Product details: Categorisation: Human; Dimensions (l/w/h): 1280 x 550 x 620 mm; Weight: 45 kg; Numbers of detectors: 12; CT Collimator: 0.4x4; Angle between detectors: 1°; Num more…
Peripheral quantitative computed tomograph for the measurement at radius or tibia with variable collimation.
Product details: Categorisation: Human/Animal; Dimensions (l/w/h): 1280 x 550 x 620 mm; Weight: 45 kg; Numbers of detectors: 12; CT Collimator: 0.4x4–0.4x1; Angle between dete more…
Peripheral quantitative computed tomograph for the measurement of larger laboratory animals like dogs, sheeps or primates.
Product details: Categorisation: Animal; Dimensions (l/w/h): 1280 x 740 x 910 mm; Weight: 90 kg; Numbers of detectors: 12; CT Collimator: 0.7x4; Angle between detectors: 1°; Nu more…
Peripheral quantitative computed tomograph for the measurement of small laboratory animals like mice or rats.
Product details: Categorisation: Animal; Dimensions (l/w/h): 930 x 550 x 620 mm; Weight: 45 kg; Numbers of detectors: 12; CT Collimator: 0.3x1.5–0.2x0.2; Angle between detecto more…