Frequency of referral of patients with safety-related contraindications to magnetic resonance imaging
Frequency of referral of patients with safety-related contraindications to magnetic resonance imaging
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DOI：
10.1016/j.ejrad.2007.01.025
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发表时间：
2007-07-01
影响因子：
3.3
通讯作者：
Dewey, Charles F.
中科院分区：
文献类型：
--
作者：
Dewey, Marc;Schink, Tania;Dewey, Charles F.
目的：分析具有磁共振（MR）成像绝对和相对禁忌症的患者实际转诊至门诊成像中心进行 MR 检查的频率。材料和方法：1997 年 11 月至 2005 年 12 月期间，总共纳入了 51,547 名连续患者。阻止 MR 成像的原因分为以下几类：绝对禁忌症和相对禁忌症。结果：具有 MR 成像绝对禁忌症的患者转诊频率为0.41%（51,547 名患者中的 211 名；95% CI，0.36-0.47%）。绝对禁忌症是位于生物敏感区域的弹片（121 名患者，0.23%；95% Cl，0.20-0.28%）、心脏起搏器（42 名患者，0.08%；95% Cl，0.06-0.11%）和其他不安全植入物（48 名患者，0.09%；95% Cl， 0.07-0.12%）。具有 MR 成像相对禁忌症的患者也被转诊至 MR 机构，例如妊娠早期的女性（13 名患者，0.03%；95% Cl，0.01-0.04%）。结论：令人惊讶的是，相当多的患者 (0.41%) 携带心脏起搏器、其他金属植入物（未批准用于 MR）或弹片，但被转诊至 MR 设施，尽管众所周知的建议不要检查此类物质患者。因此，在转诊进行 MR 检查的患者中，通常会发现 MR 成像的绝对禁忌症，并且需要尽一切努力在 MR 成像之前筛查患者是否存在此类禁忌症，以避免产生不利结果。此外，植入植入物的机构（经批准和未经批准的 MR）应承担向患者及其医生提供所需信息的法律责任。 (c) 2007 Elsevier Ireland Ltd. 保留所有权利。
Purpose: To analyse the frequency of patients with absolute and relative contraindications to magnetic resonance (MR) imaging who were actually referred to an outpatient imaging centre for an MR examinationMaterials and methods: Altogether a total of 51,547 consecutive patients were included between November 1997 and December 2005. Reasons preventing MR imaging were classified into the following categories: absolute and relative contraindications.Results: The referral frequency of patients with absolute contraindications to MR imaging was 0.41% (211 of 51,547 patients; 95% Cl, 0.36-0.47%). The absolute contraindications were shrapnels located in biologically sensitive areas (121 patients, 0.23%; 95% Cl, 0.20-0.28%), cardiac pacemakers (42 patients, 0.08%; 95% Cl, 0.06-0.11%), and other unsafe implants (48 patients, 0.09%; 95% Cl, 0.07-0.12%). Also patients with a relative contraindication to MR imaging were referred such as women with a first-trimester pregnancy (13 patients, 0.03%; 95% Cl, 0.01-0.04%).Conclusion: Surprisingly, a considerable number of patients (0.41 %) with cardiac pacemakers, other metallic implants (not approved for MR), or shrapnels are referred to MR facilities despite the well-known recommendations not to examine such patients. Thus, absolute contraindications to MR imaging are commonly found among patients referred for MR examinations and every effort needs to be made to screen patients prior to MR imaging for such contraindications to avoid detrimental results. Also, institutions placing implants (approved and unapproved for MR) should become legally responsible for providing the required information to the patients and their physicians. (c) 2007 Elsevier Ireland Ltd. All rights reserved.