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NEONATAL DOSES FROM X RAY EXAMINATIONS BY BIRTH WEIGHT IN A NEONATAL INTENSIVE CARE UNIT

机译：新生儿重症监护病房按出生体重进行X射线检查的新生儿剂量

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摘要

The aim of this study was to investigate the frequency and type of X ray examinations performed on neonates classified according to their birth weight in a neonatal intensive care unit (NICU). In this study, the radiology records of 2408 neonates who were admitted to the NICU of Oita Prefectural Hospital between January 1994 and September 1999 were investigated. This study revealed that the neonates with earlier gestational ages and lower birth weights required longer NICU stays and more frequent X ray examinations made using a mobile X ray unit. The average number of X ray examinations performed on neonates of less than 750 g birth weight was 26 films per neonate. In regard to computed tomography and fluoroscopy, no significant relationship was found between the birth weight and number of X rays. This study revealed that the entrance-surface dose per neonate was dependent upon the birth weight, while the maximum dose was not dependent upon the birth weight. The average neonatal dose in the NICU was predominantly from computed tomography and fluoroscopy. The individual dose varied widely among neonates.
机译：这项研究的目的是调查新生儿重症监护病房（NICU）中按出生体重分类的新生儿进行X射线检查的频率和类型。在这项研究中，调查了1994年1月至1999年9月在大分县立医院新生儿重症监护室住院的2408例新生儿的放射学记录。这项研究表明，具有较早孕龄和较低出生体重的新生儿需要更长的重症监护病房（NICU）停留时间，并且需要使用移动X射线机进行更频繁的X射线检查。出生体重不足750 g的新生儿进行X射线检查的平均次数为每位新生儿26片。关于计算机断层扫描和荧光检查，出生体重和X射线数量之间没有显着关系。这项研究表明，每个新生儿的入射表面剂量取决于出生体重，而最大剂量并不取决于出生体重。重症监护病房的新生儿平均剂量主要来自计算机断层扫描和透视检查。新生儿的个体剂量差异很大。

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