Capsule Endoscopy Study Group, Department of Gastroenterology, Digestive Endoscopy Center, Changhai Hospital, The Second Military Medical University, Shanghai, China.
Endoscopy. 2010 May;42(5):360-4. doi: 10.1055/s-0029-1243993. Epub 2010 Mar 8.
Currently, the default frame rate for capsule endoscopy is usually set at 2 frames per second (fps). We postulated that setting the frame rate at 1 fps for the whole procedure would save battery life and increase the completion rate without compromising the diagnostic yield. The aim of this study was to compare the completion rates and diagnostic yield of capsule endoscopy performed with frame rates of 1 fps and 2 fps.
The OMOM capsule endoscopy system was used. The procedure was performed according to the manufacturer's instructions, and the frame rate was set at 1 fps in one group and at 2 fps in the other group for the whole procedure. The completion rate, total operating time, and diagnostic yield in the two groups were measured and compared.
A total of 107 patients were randomized to either the 1 fps group (n = 54) or the 2 fps group (control, n = 53). There was no significant difference in sex, age, indications, and gastric transit time between the two groups. The mean total operating time was significantly longer in the 1 fps group than in the 2 fps group (758 +/- 79 minutes vs. 456 +/- 67 minutes, P < 0.001). The completion rate and diagnostic yield were significantly higher in the 1 fps group than in the 2 fps group (96.2 % vs. 70.6 %, P < 0.001; 40.7 % vs. 18.9 %, P = 0.013, respectively).
Setting the frame rate of the capsule endoscope at 1 fps for the whole procedure increases the completion rate by prolonging the capsule's total operating time; the diagnostic yield does seem to be at least as high as with 2 fps.
目前，胶囊内镜的默认帧率通常设置为每秒 2 帧（fps）。我们假设在整个过程中将帧率设置为 1 fps 可以节省电池寿命并提高完成率，而不会影响诊断效果。本研究的目的是比较以 1 fps 和 2 fps 的帧率进行胶囊内镜检查的完成率和诊断效果。
使用 OMOM 胶囊内镜系统。根据制造商的说明进行操作，一组将帧率设置为 1 fps，另一组设置为 2 fps 进行整个过程。测量并比较两组的完成率、总操作时间和诊断效果。
共有 107 例患者被随机分为 1 fps 组（n = 54）或 2 fps 组（对照组，n = 53）。两组在性别、年龄、适应证和胃转运时间方面无显著差异。1 fps 组的总操作时间明显长于 2 fps 组（758 ± 79 分钟比 456 ± 67 分钟，P < 0.001）。1 fps 组的完成率和诊断效果明显高于 2 fps 组（96.2%比 70.6%，P < 0.001；40.7%比 18.9%，P = 0.013）。
将整个胶囊内镜过程的帧率设置为 1 fps 可以通过延长胶囊的总操作时间来提高完成率；诊断效果似乎至少与 2 fps 一样高。
