Department of Neurosurgery, University Hospital of Bern, Switzerland.
AJR Am J Roentgenol. 2011 Mar;196(3):W285-9. doi: 10.2214/AJR.10.4939.
We assessed the diagnostic accuracy and time effectiveness of the Statscan low-dose full-body digital x-ray machine in the evaluation of ventriculoperitoneal (VP) shunt dysfunction.
Twenty-five consecutive adults scheduled for a radiographic shunt series with the Statscan were prospectively selected (group 1). Another 21 consecutive patients who underwent conventional x-ray scanning served as controls (group 2) for blinded analysis.
Image quality was sufficient for diagnosis in both groups (95.6% vs 95.1%). The quality of VP shunt delineation and contrast of anatomic structures was good or optimal in both groups (p > 0.05). The scan time was significantly lower for group 1 (p < 0.001). All images for group 2 exhibited overlapping of anatomic structures (25% of total coverage), whereas no technically determined overlapping occurred in group 1.
The Statscan digital x-ray machine allows accurate assessment of VP shunt continuity at lower radiation dosages and in less time than conventional x-ray techniques.
评估 Statscan 低剂量全身数字 X 射线机在评估脑室-腹腔（VP）分流功能障碍方面的诊断准确性和时间效率。
前瞻性选择 25 例连续接受 Statscan 放射性分流系列检查的成年人（第 1 组）。另外 21 例连续接受常规 X 射线扫描的患者作为盲法分析的对照组（第 2 组）。
两组的图像质量均足以诊断（95.6%比 95.1%）。两组的 VP 分流显示和解剖结构对比度均良好或最佳（p>0.05）。第 1 组的扫描时间明显更短（p<0.001）。第 2 组的所有图像均显示解剖结构重叠（总覆盖面积的 25%），而第 1 组未发生任何技术确定的重叠。
Statscan 数字 X 射线机能够以比传统 X 射线技术更低的辐射剂量和更短的时间准确评估 VP 分流的连续性。
