Sine Spin平板探测器CT提升脑实质可视化：与常规FDCT的个体内对比
S-FDCT的对比噪声比及基底节和幕上皮质的主观评分均显著高于C-FDCT，但辐射剂量略高。
要点
- S-FDCT较C-FDCT显著提高脑实质对比噪声比和灰白质分化主观评分。
- S-FDCT辐射剂量略高于C-FDCT，需权衡图像质量与剂量。
- S-FDCT有望改善介入术后平板CT对脑实质病变的检出。
核心结论
- 在围介入期成像中，S-FDCT较C-FDCT改善了脑软组织可视化，支持Sine Spin技术在高级血管造影套件神经成像中的应用潜力。
研究设计与样本
- 定量图像质量采用对比噪声比（CNR）评估，定性图像质量采用五分法评估基底节和幕上皮质，分析聚焦于梗死对侧健康脑实质。
- 辐射剂量采用入射皮肤剂量和剂量面积乘积（DAP）评估。
关键影像表现/征象
- S-FDCT的CNR高于C-FDCT（均值±标准差：2.62±1.36 vs 1.03±0.38，p<0.001）。
- S-FDCT在基底节的主观评分高于C-FDCT（2.45±0.71 vs 1.54±0.53，p<0.001）。
- S-FDCT在幕上皮质的主观评分高于C-FDCT（3.01±0.80 vs 1.71±0.60，p<0.001）。
- 读者间一致性良好（κ=0.798）。
诊断标准与关键数值
- 定量图像质量指标为对比噪声比（CNR），S-FDCT均值2.62±1.36，C-FDCT均值1.03±0.38。
- 定性图像质量采用五分法评分，基底节S-FDCT 2.45±0.71、C-FDCT 1.54±0.53；幕上皮质S-FDCT 3.01±0.80、C-FDCT 1.71±0.60。
- 辐射剂量以DAP表示，S-FDCT为50.6±3.10 Gy·cm²，C-FDCT为46.89±2.86 Gy·cm²（p<0.001）。
临床应用与阅片要点
- 在介入术后需评估脑实质时，S-FDCT可提供更好的灰白质分化，有助于识别缺血等病变。
- S-FDCT辐射剂量略高，应在临床需要优化脑实质显示时选用。
以上解读依据论文摘要（全文未开放获取或许可不允许翻译转载）。
英文原文（摘要）· 点击展开
BACKGROUND: Flat-detector computed tomography (FDCT) is increasingly used for periinterventional cerebral imaging. The recently introduced Sine Spin FDCT (S-FDCT) aims to improve cerebral soft tissue contrast compared with conventional FDCT (C-FDCT). Reliable visualization of healthy brain parenchyma is essential for detecting pathological changes. This study compared gray-white matter differentiation between intraindividually acquired S-FDCT and C-FDCT.
METHODS: A retrospective analysis of a prospectively maintained database included patients with ischemic stroke treated by mechanical thrombectomy who underwent both S-FDCT and C-FDCT within the same interventional session on a latest-generation angiography system. Quantitative image quality was assessed using the contrast-to-noise ratio (CNR). Qualitative image quality was evaluated using a five-point scale at basal ganglia and supratentorial cortex. Analyses focused on healthy brain parenchyma contralateral to infarction. Radiation dose was assessed using entrance-skin dose and dose-area product (DAP).
RESULTS: Forty patients (74.2 ± 15.3 years) were analyzed. S-FDCT demonstrated a higher CNR than C-FDCT (mean CNR ± SD: 2.62 ± 1.36 versus 1.03 ± 0.38; p < 0.001). Qualitative ratings were higher for S-FDCT at the basal ganglia (2.45 ± 0.71 versus 1.54 ± 0.53; p < 0.001) and supratentorial cortex (3.01 ± 0.80 versus 1.71 ± 0.60; p < 0.001). Inter-reader agreement was good (κ = 0.798). S-FDCT showed a moderately higher radiation dose than C-FDCT (DAP: 50.6 ± 3.10 versus 46.89 ± 2.86 Gy·cm², p < 0.001).
CONCLUSION: S-FDCT improves cerebral soft tissue visualization compared with C-FDCT in periinterventional imaging. These findings highlight the potential of Sine Spin technology to enhance FDCT image quality and support its role in advanced angiography-suite-based neuroimaging.
引用
- Heinrich M, Mooshage CM, Breckwoldt MO, et al. Sine spin flat-detector CT for enhanced brain parenchyma visualization: an intraindividual comparison on a latest-generation angiography system. Neuroradiology. 2026. PMID: 42126545. doi:10.1007/s00234-026-04033-5
供执业医师工作参考，不替代临床判断；数值与分级以指南原文为准。