每年最多会有160万名进行乳房重建手术的新候选患者，原发性乳癌术后利用组织扩张器（TE）进行两阶段乳房重建手术已成为常见方法。然而，传统乳房组织扩张器常见的缺点是磁性注射端口，在磁共振成像检查时已有报道称其会对患者造成伤害。因此，这种类型的乳房组织扩张器被标记为“MR不安全”。最近的技术进展已将射频识别（RFID）技术纳入组织扩张器中，使得可以在不使用磁性部件的情况下定位注射端口，从而产生了MR条件下的组织扩张器。本文旨在回顾有关具有磁性端口的组织扩张器（TE）的安全性相关信息，并收集BR过程中MR条件下的组织扩张器对患者有益的不同临床场景。文献回顾范围为2018年至2022年，搜索词为：“组织扩张器” OR “乳房组织扩张器” AND “磁共振成像” OR “MRI”。此外，还从作者的实践中收集了一系列病例。文献搜索共得到13篇最新的同行评审文章，并列出并讨论了6个不同的临床场景。大多数临床医生认为磁共振检查是目前先进的诊断成像模式。然而，由于具有磁性端口的组织扩张器的既往风险，应在决定哪种乳房组织扩张器最适合需要磁共振检查的患者时考虑其MRI标记分类。© 2023作者许可牛津大学出版社代表The Aesthetic Society发表。保留所有权利。有关许可，请发送电子邮件至：journals.permissions@oup.com。

Breast cancer results in up to 1.6 million new candidates for yearly breast reconstruction (BR) surgery. Two-stage breast reconstruction surgery with the use of a tissue expander (TE) is a common approach to reconstruct the breast after mastectomy. However, a common disadvantage encountered with traditional breast TE is the magnetic injection port, which has been reported to cause injuries in patients undergoing magnetic resonance imaging. Thus, this type of breast TE is labeled "MR Unsafe". Recent technological advances have incorporated radio-frequency identification (RFID) technology into the TE to allow for the location of the injection port without using magnetic components, thus resulting in an MR Conditional TE. This paper aims to review the information regarding the safety profile of tissue expanders (TEs) with magnetic ports and to gather distinct clinical scenarios in which an MR Conditional TE benefits the patient during the BR process. A literature review ranging from 2018 to 2022 was performed with the search terms: "tissue expander" OR "breast tissue expander" AND "magnetic resonance imaging" OR "MRI". Additionally, a case series was collected from each the authors' practices. The literature search yielded 13 recent peer-reviewed papers, and 6 distinct clinical scenarios were compiled and discussed. Most clinicians find MRI exams to be the state-of-art diagnostic imaging modality. However, due to the pre-existing risks associated with TE with magnetic ports, the MRI labeling classification should be considered when deciding which TE is the most appropriate for the patient requiring MRI exams.© The Author(s) 2023. Published by Oxford University Press on behalf of The Aesthetic Society. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.