Acoustic noise in a small-format 3.0-T neonatal MRI system.

IF 2.1 3区医学 Q2 PEDIATRICS Pediatric Radiology Pub Date : 2024-11-01 Epub Date: 2024-10-15 DOI:10.1007/s00247-024-06070-9

Amanda J Neumiller, Kelsey M Murphy, Hui Wang, Wolfgang M Loew, Charles L Dumoulin

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Abstract

Background: Today, magnetic resonance imaging (MRI) is rarely used in managing the care of premature neonates. This is in large part due to the medical and logistical challenges associated with moving neonates from the neonatal intensive care unit (NICU) to the radiology department. Furthermore, acoustic noise associated with MR scanning poses safety concerns for both practitioners and neonatal patients. A small-format 3.0-T neonatal scanner was recently developed and placed within the NICU to address these logistical and acoustic challenges.

Objective: To compare acoustic noise measurements of a small-format 3.0-T neonatal MRI scanner with conventional adult-sized 1.5-T and 3.0-T MRI scanners using identical neonatal head imaging protocols.

Materials and methods: Sound pressure level (SPL) measurements of a standard imaging protocol were made in a small-format neonatal 3.0-T MRI scanner as well as in adult-sized 1.5-T and 3.0-T scanners. SPL measurements were made with a Brüel & Kjær sound level meter model 2250. The statistical significance of the differences in SPL between scanners was determined using one-way ANOVA.

Results: Average sound pressure level values were measured in unweighted decibels (dB) and A-weighted decibels (dBA) for all imaging sequences in the protocol. The average A-weighted SPLs for the NICU from 1.5-T and 3.0-T MRI scanners were 81.02 ± 0.28 dBA, 87.00 ± 0.85 dBA, and 94.91 ± 0.65 dBA, respectively. SPLs at the isocenter of the NICU MRI scanner were 5.98 dBA quieter than in the 1.5-T scanner (P=0.007), and 13.89 dBA quieter than in the 3.0-T scanner (P<0.001). For staff standing next to the scanner, the NICU scanner was 20.24 dBA quieter than the 1.5-T scanner (P<0.001) and 19.28 dBA quieter than the 3.0-T scanner (P<0.001).

Conclusion: The NICU 3.0-T MRI system is significantly quieter than conventional adult-sized MRI systems, improving safety for neonatal patients. Significant reductions in SPL were also noted inside the screen room where clinicians may be present during scanning.

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小型 3.0-T 新生儿磁共振成像系统中的噪音。

背景：如今，磁共振成像（MRI）已很少用于早产新生儿的护理管理。这在很大程度上是由于将新生儿从新生儿重症监护室（NICU）转移到放射科所面临的医疗和后勤挑战。此外，磁共振扫描产生的声学噪音也给从业人员和新生儿患者带来了安全隐患。最近开发了一种小型 3.0-T 新生儿扫描仪，并将其放置在新生儿重症监护室内，以应对这些后勤和声学方面的挑战：比较小型 3.0-T 新生儿 MRI 扫描仪与传统成人型 1.5-T 和 3.0-T MRI 扫描仪在相同的新生儿头部成像方案下的声学噪声测量结果：在小型新生儿 3.0-T MRI 扫描仪以及成人 1.5-T 和 3.0-T 扫描仪上对标准成像方案进行声压级 (SPL) 测量。声压级测量采用 Brüel & Kjær 2250 型声级计。采用单因素方差分析确定不同扫描仪之间声压级差异的统计学意义：以未加权分贝（dB）和 A 加权分贝（dBA）为单位测量了方案中所有成像序列的平均声压级值。新生儿重症监护室 1.5-T 和 3.0-T 磁共振成像扫描仪的平均 A 加权声压级分别为 81.02 ± 0.28 dBA、87.00 ± 0.85 dBA 和 94.91 ± 0.65 dBA。新生儿重症监护室磁共振成像扫描仪等中心的声压级比 1.5-T 扫描仪低 5.98 分贝（P=0.007），比 3.0-T 扫描仪低 13.89 分贝（PC 结论：新生儿重症监护室 3.0-T 磁共振成像扫描仪的声压级比 1.5-T 扫描仪低 5.98 分贝（P=0.007），比 3.0-T 扫描仪低 13.89 分贝（P=0.007）：新生儿重症监护室 3.0-T 磁共振成像系统的噪音明显低于传统的成人型磁共振成像系统，从而提高了新生儿患者的安全性。在扫描过程中可能有临床医生在场的屏幕室内，声压级也明显降低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Pediatric Radiology 医学-核医学

CiteScore

4.40

自引率

17.40%

发文量

300

审稿时长

3-6 weeks

期刊介绍： Official Journal of the European Society of Pediatric Radiology, the Society for Pediatric Radiology and the Asian and Oceanic Society for Pediatric Radiology Pediatric Radiology informs its readers of new findings and progress in all areas of pediatric imaging and in related fields. This is achieved by a blend of original papers, complemented by reviews that set out the present state of knowledge in a particular area of the specialty or summarize specific topics in which discussion has led to clear conclusions. Advances in technology, methodology, apparatus and auxiliary equipment are presented, and modifications of standard techniques are described. Manuscripts submitted for publication must contain a statement to the effect that all human studies have been reviewed by the appropriate ethics committee and have therefore been performed in accordance with the ethical standards laid down in an appropriate version of the 1964 Declaration of Helsinki. It should also be stated clearly in the text that all persons gave their informed consent prior to their inclusion in the study. Details that might disclose the identity of the subjects under study should be omitted.