- Poster presentation
- Open Access
Cardiac magnetic resonance imaging using an open 1.0T MR platform: a comparative study with 1.5T
© Strach et al; licensee BioMed Central Ltd. 2013
- Published: 30 January 2013
- Cardiac Magnetic Resonance
- Cardiac Magnetic Resonance Imaging
- Myocardial Segment
- Philips Healthcare
- Short Axis Slice
Cardiac MRI (cMRI) has evolved as the non-invasive reference standard for accurate and highly reproducible determination of cardiac function and myocardial viability. Thus, cMRI is widespread and increasingly utilized in the clinical practice. The introduction of open high-field (HFO) MR scanners offers advantages not only for image-guided interventions, examinations of patients with claustrophobia or children, but also for monitoring of critically ill patients.
15 volunteers (9 female, 6 male; 36+/- 17 years) underwent unenhanced cMRI both at an open 1.0T MR scanner (Panorama HFO 1.0T, Philips Healthcare, Best, Netherlands) and a cylindrical 1.5T MR system (Intera 1.5T, Philips Healthcare, Best, Netherlands). Cine B-SSFP, T1 TSE, T1 TFE and T2 TSE sequences in three [apical (a), mid-ventricular (m), basal (b)] short axis slices (SA) were acquired at both field strengths. Overall image quality using a 4-point grading scale (4: excellent; 1: non-diagnostic) was assessed. For semiquantitative assessment of artifacts 16 myocardial S were evaluated for each of the four different sequence types. The location and total number of ND segments was determined.
Image quality did not show a statistically significant difference for all four sequence types both at 1.0T (B-SSFP 3.87±0.35; T1 TSE 3.13±0.74; T1 BB TFE 3.6±0.63; T2 BB TSE 3.6±0.63) and 1.5T (B-SSFP 3.67±0.49; T1 TSE 3.73±0.46; T1 BB TFE 3.33±0.49; T2 BB TSE 3.47±0.52; p > 0.05). ND myocardial S occurred only in the T2 TSE sequence (6/240 Segments, 2.5%) using the HFO platform. At the cylindrical 1.5T scanner 8/240 (3.3%) segments were non-diagnostic for the T2 TSE and 9/240 (3.8%) segments for the T1 TFE. The majority of ND S at both field strengths was detected in the b SA slices [1.0T: T2 TSE 6 segments (b 4/6 segments: 2/4 inferolateral, 1/4 anterolateral, 1/4 inferoseptal; m 2/6 segments: 2/2 inferolateral); 1.5T: T2 TSE 8 segments (b 6/8 segments - 2/6 inferolateral, 3/6 anterolateral, 1/6 inferior; m 2/8 segments - 1/2 inferolateral, 1/2 inferior), T1 TFE 9 segments (b 7/9 segments - 4/7 inferolateral, 1/7 anterolateral, 2/7 inferior; m 2/9 segments: 2/2 anterolateral)].
Standard cardiac MRI sequences at an open 1.0T MR platform offer a high image quality, which is comparable to sequences acquired at a cylindrical 1.5T MR scanner. The number of non-diagnostic myocardial segments are reduced at an open 1.0T MR system when compared to the standard approach at 1.5T.
This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.