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葡萄牙介入神经放射诊断参考水平与触发值建立

Establishment of portuguese diagnostic reference levels and trigger levels for radiation-induced tissue reactions in interventional neuroradiology.
PubMed 文献 · Eur J Radiol · 2026-05-13

在葡萄牙六个中心回顾性纳入1409例介入神经放射病例,覆盖血栓切除术、脑动脉造影、动脉瘤栓塞等常见手术。以PKA、Ka,r和透视时间的第75百分位数建立国家诊断参考水平。动静脉畸形/动静脉瘘栓塞的触发值超限比例最高。

要点

  • 动静脉畸形/动静脉瘘栓塞辐射剂量最高,PKA为366 Gy·cm2。
  • 脑血栓切除术PKA参考水平为109 Gy·cm2,Ka,r为746 mGy。
  • 不同手术间透视时间差异大,动脉瘤栓塞为39分钟。

核心结论

  • 首次建立葡萄牙介入神经放射常见脑与颈部手术的国家诊断参考水平。
  • 动静脉畸形/动静脉瘘栓塞的触发值超限百分比最高。
  • 结果可用于支持各中心方案优化与辐射防护实践同质化。

研究设计与样本

  • 多中心回顾性研究,在葡萄牙六个参考中心开展。
  • 纳入1409例病例,覆盖六种常见介入神经放射手术。
  • 包含葡萄牙单中心开展的视网膜母细胞瘤栓塞术。
  • 参考标准为PKA、Ka,r与透视时间的第75百分位数。

关键影像表现/征象

  • 动静脉畸形/动静脉瘘栓塞PKA为366 Gy·cm2,在各手术中最高。
  • 脑动脉瘤栓塞Ka,r为2652 mGy,居各手术首位。
  • 动静脉畸形/动静脉瘘栓塞透视时间为62分钟,为最长。

诊断标准与关键数值

  • 脑血栓切除术DRL:PKA 109 Gy·cm2,Ka,r 746 mGy,透视时间16分钟。
  • 脑动脉造影DRL:PKA 72 Gy·cm2,Ka,r 488 mGy,透视时间9分钟。
  • 脑动脉瘤栓塞DRL:PKA 180 Gy·cm2,Ka,r 2652 mGy,透视时间39分钟。

临床应用与阅片要点

  • 可将PKA超过对应手术P75值作为本单位剂量优化预警参考。
  • 动静脉畸形/动静脉瘘栓塞中更需关注皮肤剂量与触发值超限。
  • 记录PKA、Ka,r和透视时间便于跨中心比较与持续改进。

局限性

  • 回顾性研究设计存在信息偏倚风险。
  • 手术复杂性因素包括栓塞尝试次数、动脉瘤位置、器械选择与插管血管。

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

PURPOSE: To establish national diagnostic reference levels (DRLs) for interventional neuroradiology (INR) procedures in Portugal.

METHODS: A multicentre retrospective study was performed in six reference centres, including the six most common INR procedures: cerebral thrombectomy, cerebral arteriography, cerebral aneurysm embolisation, arteriovenous malformation (AVM) and arteriovenous fistula (AVF) embolisation, cerebral vasospasm treatment, and carotid artery stenting. Additionally, retinoblastoma embolisation, performed in a single Portuguese centre, was included. DRLs were defined as the 75th percentile (P75) of air kerma-area product (PKA, Gy·cm2), air kerma at the patient entrance reference point (Ka,r, mGy), and fluoroscopy time (FT, min). Dose variability and trigger value exceedances were analysed according to procedural complexity and pathology.

RESULTS: Data of 1409 cases were analysed. The national DRLs in terms of PKA were: 109 Gy.cm2 cerebral thrombectomy, 72 Gy.cm2 for cerebral arteriography, 180 Gy.cm2 cerebral aneurysm embolisation, 366 Gy.cm2 AVM/AVF embolisation, 87 Gy.cm2 cerebral vasospasm, and 74 Gy.cm2 for carotid stenting. The corresponding Ka,r values were 746 mGy, 488 mGy, 2652 mGy, 4282,9 mGy, 511,0 mGy, and 520,3 mGy, and FT values were 16, 9, 39, 62, 9, 22 min, respectively. Procedural complexity factors assessed: thrombectomy attempts, aneurysm location, device selection, catheterised vessels. Retinoblastoma embolisation, demonstrated PKA 9,5 Gy.cm2, Ka,r 75,7 mGy, and FT 7,1 min.

CONCLUSIONS: This first Portuguese INR DRL study provides a national benchmark for the most common cerebral and neck procedures. AVM/AVF embolisation showed the highest percentage of trigger value exceedances. These results will support protocol optimisation and harmonisation of radiation protection practice across centres.

来源:Eur J Radiol,查看原文。版权归原作者所有。

引用

  1. Lopes, Teles, Santos, et al. Establishment of portuguese diagnostic reference levels and trigger levels for radiation-induced tissue reactions in interventional neuroradiology. Eur J Radiol. 2026. PMID: 42247819. doi:10.1016/j.ejrad.2026.112924

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。