Bruce S J, Guilford W G, Hedderley D I, McCauley M
Institute of Veterinary Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand.
Vet Radiol Ultrasound. 1999 Sep-Oct;40(5):472-6. doi: 10.1111/j.1740-8261.1999.tb00377.x.
Ten healthy dogs were fed 30 1.5 mm and 10 5 mm radiopaque markers (BIPS, MedID, Grand Rapids) mixed with sufficient quantities of a high fibre diet to meet 25% of their estimated daily caloric requirements. Abdominal radiographs were made at two hour intervals until 90% of the small and large markers had left the colon. The mean residence times (MRT) of each size of marker in the proximal, distal and total colon were calculated using kinetic analysis. The MRT's of the small markers were 4.9 hours (SD 4.4), 7.1 hours (SD 3.3) and 12.0 hours (SD 7.1) respectively. The MRT's of the large markers were not significantly different from the small markers except in the proximal colon where they were significantly shorter (3.2 hours, SD 2.3). Reference colonic filling and colonic transit curves for both sizes of markers were constructed. These may be useful to detect abnormal colonic transit in dogs.
给10只健康的狗喂食30个1.5毫米和10个5毫米的不透射线标记物（BIPS，MedID，大急流城），这些标记物与足量的高纤维饮食混合，以满足其估计每日热量需求的25%。每隔两小时拍摄腹部X光片，直到90%的大小标记物离开结肠。使用动力学分析计算每种大小标记物在近端、远端和整个结肠的平均停留时间（MRT）。小标记物的MRT分别为4.9小时（标准差4.4）、7.1小时（标准差3.3）和12.0小时（标准差7.1）。大标记物的MRT与小标记物没有显著差异，除了在近端结肠，大标记物的MRT明显更短（3.2小时，标准差2.3）。构建了两种大小标记物的参考结肠充盈和结肠转运曲线。这些曲线可能有助于检测狗的结肠转运异常。
