Ubeda C, Vano E, Miranda P, Valenzuela E, Vergara F, Guarda E
Department of Medical Technology, Study Center in Radiological Sciences (CECRAD), Health Sciences Faculty, Tarapaca University, Arica, Chile
Department of Radiology, Faculty of Medicine, Complutense University and Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid 28040, Spain.
Radiat Prot Dosimetry. 2015 Jul;165(1-4):107-10. doi: 10.1093/rpd/ncv045. Epub 2015 Mar 23.
The aims of this work were to report the results of a national survey on entrance surface air kerma (ESAK) values for different phantom thicknesses and operation modes in paediatric interventional cardiology (IC) systems and to compare them with previous values. The national survey also offers suggested investigation levels (ILs) for ESAK in paediatric cardiac procedures. ESAK was measured on phantoms of 4-16 cm thickness of polymethyl methacrylate slabs. For low fluoroscopy mode (FM), ESAK rates ranged from 0.11 to 33.1 mGy min(-1) and for high FM from 0.34 to 61.0 mGy min(-1). For cine mode, values of ESAK per frame were from 1.9 to 78.2 µGy fr(-1). The ILs were suggested as the third quartile of the values measured. This research showed lower ESAK values than in previous research, particularly for ESAK values in cine modes. This work represents a first step towards launching a national programme in paediatric dosimetry for IC procedures.
这项工作的目的是报告一项关于儿科介入心脏病学（IC）系统中不同体模厚度和操作模式下入射表面空气比释动能（ESAK）值的全国性调查结果，并将其与先前的值进行比较。该全国性调查还提供了儿科心脏手术中ESAK的建议调查水平（ILs）。ESAK是在厚度为4 - 16厘米的聚甲基丙烯酸甲酯平板体模上测量的。对于低透视模式（FM），ESAK率范围为0.11至33.1 mGy min⁻¹，高FM模式下为0.34至61.0 mGy min⁻¹。对于电影模式，每帧的ESAK值为1.9至78.2 µGy fr⁻¹。建议的ILs为测量值的第三四分位数。这项研究显示ESAK值低于先前的研究，特别是电影模式下的ESAK值。这项工作是朝着启动儿科IC手术剂量测定全国计划迈出的第一步。
