Artefacts in 1.5 Tesla and 3 Tesla cardiovascular magnetic resonance imaging in patients with leadless cardiac pacemakers

被引：13

作者：

Kiblboeck, Daniel ^{[1
]}

Reiter, Christian ^{[1
]}

Kammler, Juergen ^{[1
]}

Schmit, Pierre ^{[2
]}

Blessberger, Hermann ^{[1
]}

Kellermair, Joerg ^{[1
]}

Fellner, Franz ^{[2
,3
]}

Steinwender, Clemens ^{[1
,4
]}

机构：

[1] Kepler Univ Hosp Linz, Dept Cardiol, Med Campus 3,Krankenhausstr 9, A-4021 Linz, Austria

[2] Kepler Univ Hosp Linz, Dept Radiol, Linz, Austria

[3] Friedrich Alexander Univ Erlangen Nurnberg, Fac Med, Erlangen, Germany

[4] Paracelsus Med Univ Salzburg, Dept Internal Med 2, Salzburg, Austria

来源：

JOURNAL OF CARDIOVASCULAR MAGNETIC RESONANCE | 2018年 / 20卷

关键词：

Artefacts; Leadless cardiac pacemakers; Cardiovascular magnetic resonance imaging; 1.5; Tesla; 3; IMPLANTABLE ELECTRONIC DEVICES; SAFETY; MRI; DEFIBRILLATOR; FEASIBILITY; THERAPY; RESYNCHRONIZATION; PERFORMANCE; PROTOCOLS; QUALITY;

D O I：

10.1186/s12968-018-0469-4

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

Background: There are limited data on patients with leadless cardiac pacemakers (LCP) undergoing magnetic resonance imaging. The aim of this prospective, single-center, observational study was to evaluate artefacts on cardiovascular magnetic resonance (CMR) images in patients with LCP. Methods: Fifteen patients with Micra (TM) LCP, implanted at least 6 weeks prior to CMR scan, were enrolled and underwent either 1.5 Tesla or 3 Tesla CMR imaging. Artefacts were categorized into grade 1 (excellent image quality), grade 2 (good), grade 3 (poor) and grade 4 (non-diagnostic) for each myocardial segment. One patient was excluded because of an incomplete CMR investigation due to claustrophobia. Results: LCP caused an arc-shaped artefact (0.99 +/- 0.16 cm(2)) at the right ventricular (RV) apex. Of 224 analyzed myocardial segments of the left ventricle (LV) 158 (70.5%) were affected by grade 1, 27 (12.1%) by grade 2, 17 (7.6%) by grade 3 and 22 (9.8%) by grade 4 artefacts. The artefact burden of grade 3 and 4 artefacts was significantly higher in the 3 Tesla group (3 Tesla vs 1.5 Tesla: 3.7 +/- 1.6 vs 1.9 +/- 1.4 myocardial segments per patient, p = 0.03). A high artefact burden was particularly observed in the mid anteroseptal, inferoseptal and apical septal myocardial segments of the LV and in the mid and apical segments of the RV. Quantification of LV function and assessment of valves were feasible in all patients. We did not observe any clinical or device-related adverse events. Conclusion: CMR imaging in patients with LCP is feasible with excellent to good image quality in the majority of LV segments. The artefact burden is comparable small allowing an accurate evaluation of LV function, cardiac structures and valves. However, artefacts in the mid anteroseptal, inferoseptal and apical septal myocardial segments of the LV due to the LCP may impair or even exclude diagnostic evaluation of these segments. Artefacts on CMR images may be reduced by the use of 1.5 Tesla CMR scanners.

引用

页数：11

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