Impact of an abdominal belt on breathing patterns and scan efficiency in whole-heart coronary magnetic resonance angiography: comparison between the UK and Japan.

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  • Author(s): Ishida M;Ishida M; Schuster A; Takase S; Morton G; Chiribiri A; Bigalke B; Schaeffter T; Sakuma H; Nagel E
  • Source:
    Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance [J Cardiovasc Magn Reson] 2011 Nov 17; Vol. 13, pp. 71. Date of Electronic Publication: 2011 Nov 17.
  • Publication Type:
    Comparative Study; Journal Article; Multicenter Study; Research Support, Non-U.S. Gov't
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: BioMed Central Country of Publication: England NLM ID: 9815616 Publication Model: Electronic Cited Medium: Internet ISSN: 1532-429X (Electronic) Linking ISSN: 10976647 NLM ISO Abbreviation: J Cardiovasc Magn Reson Subsets: MEDLINE
    • Publication Information:
      Publication: London : BioMed Central
      Original Publication: New York : M. Dekker, Inc., c1998-
    • Subject Terms:
      Respiration*; Coronary Artery Disease/*diagnosis ; Magnetic Resonance Angiography/*instrumentation; Abdomen ; Adult ; Aged ; Artifacts ; Asian People ; Body Height/ethnology ; Body Weight/ethnology ; Constriction ; Coronary Artery Disease/ethnology ; Coronary Artery Disease/physiopathology ; Equipment Design ; Female ; Humans ; Japan/epidemiology ; Male ; Middle Aged ; Patient Positioning ; Predictive Value of Tests ; Supine Position ; United Kingdom/epidemiology ; Waist Circumference/ethnology ; White People
    • Abstract:
      Background: Long acquisition times and complex breathing motion patterns lead to suboptimal image quality in whole heart coronary magnetic resonance angiography (WHCMRA). To overcome this problem, an abdominal belt (BELT) has been suggested by a Japanese group. However, its applicability in a Western population has not been previously demonstrated. The purpose of this study was to investigate 1) how the application of a BELT alters breathing patterns during MR scanning and 2) whether the BELT has a similar impact on breathing patterns in UK and Japanese patient populations.
      Methods: 30 patients (15 in the UK and 15 in Japan) were studied at 1.5 Tesla (Achieva, Philips Healthcare). Real time navigator positioned through the right diaphragm in cranio-caudal direction was evaluated. Measurements were performed in the supine position with free breathing for one minute before and after a tight-fitting BELT was positioned around the patient's abdomen. End expiratory position (EEP), end inspiratory position (EIP), end expiratory duration (EED) for the right diaphragm and respiratory rate (RR) were obtained. Scan efficiency (SE) was calculated as follows; SE = [the duration within 5 mm gating window per minutes]/[RR interval]/[heart rate].
      Results: Height and weight of UK patients were significantly larger than in the Japanese population (171.2 ± 10.8 cm vs 160.8 ± 8.5 cm, p = 0.007; 80.5 ± 22.5 kg vs 59.9 ± 7.7 kg, p = 0.004). After fitting the BELT, EEP-EIP decreased (all patients, 14.9 ± 6.2 mm to 9.4 ± 3.8 mm, p < 0.001; UK patients, 15.9 ± 6.0 mm to 9.7 ± 3.1 mm, p = 0.001; Japanese patients, 14.0 ± 6.4 mm to 9.1 ± 4.6 mm, p = 0.001), RR increased (all patients, 10.0 ± 3.1 min(-1) to 11.2 ± 3.0 min(-1), p = 0.003; UK patients, 9.5 ± 2.8 min(-1) to 10.7 ± 2.8 min(-1), p = 0.038; Japanese patients, 10.4 ± 3.5 min(-1) to 11.8 ± 3.1 min(-1), p = 0.036), and calculated scan efficiency increased (all patients, 45.3 ± 11.4% to 58.6 ± 17.0%, p < 0.001; UK patients, 44.2 ± 10.8% to 55.7 ± 16.7%, p = 0.004; Japanese patients, 46.3 ± 32.2% to 61.0 ± 17.6%, p = 0.001). No significant differences were found between UK and Japanese patients before and after administration of the BELT.
      Conclusion: Using a BELT significantly increases whole-heart coronary MR angiography scan efficiency in both UK and Japanese patients.
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    • Grant Information:
      FS/10/029/28253 United Kingdom British Heart Foundation; RE/08/003 United Kingdom British Heart Foundation
    • Publication Date:
      Date Created: 20111118 Date Completed: 20120508 Latest Revision: 20240117
    • Publication Date:
      20240117
    • Accession Number:
      PMC3254129
    • Accession Number:
      10.1186/1532-429X-13-71
    • Accession Number:
      22087579