Department of Radiology, Children's Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA, 19104, USA.
Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Pediatr Radiol. 2023 Jun;53(7):1248-1259. doi: 10.1007/s00247-022-05468-7. Epub 2022 Aug 11.
The gold standard for pediatric chest imaging remains the CT scan. An ideal pediatric chest CT has the lowest radiation dose with the least motion degradation possible in a diagnostic scan. Because of the known inherent risks and costs of anesthesia, non-sedate options are preferred. Dual-source CTs are currently the fastest, lowest-dose CT scanners available, utilizing an ultra-high-pitch mode resulting in sub-second CTs. The dual-energy technique, available on dual-source CT scanners, gathers additional information such as pulmonary blood volume and includes relative contrast enhancement and metallic artifact reduction, features that are not available in high-pitch flash mode. In this article we discuss the benefits and tradeoffs of dual-source CT scan modes and tips on image optimization.
儿科胸部成像的金标准仍然是 CT 扫描。理想的儿科胸部 CT 应具有最低的辐射剂量和尽可能少的运动伪影，以获得诊断性扫描。由于已知存在麻醉的固有风险和成本，因此首选非镇静选项。双源 CT 是目前最快、剂量最低的 CT 扫描仪，采用超高帧率模式，可在亚秒级完成 CT 扫描。双能技术可在双源 CT 扫描仪上获得，可收集额外的信息，如肺血量，并包括相对对比增强和减少金属伪影，这些都是高帧率闪光模式所不具备的功能。本文讨论了双源 CT 扫描模式的优缺点以及图像优化技巧。
