European Radiology

, Volume 12, Issue 2, pp 378–384

Analysis of artefacts and detail resolution of lung MRI with breath-hold T1-weighted gradient-echo and T2-weighted fast spin-echo sequences with respiratory triggering

  • J. Biederer
  • M. Reuter
  • M. Both
  • C. Muhle
  • J. Grimm
  • J. Graessner
  • M. Heller
Chest

DOI: 10.1007/s00330-001-1147-7

Cite this article as:
Biederer, J., Reuter, M., Both, M. et al. Eur Radiol (2002) 12: 378. doi:10.1007/s00330-001-1147-7

Abstract.

The aim of this study was to evaluate feasibility and limitations of two MR sequences for imaging of the lung using a semi-quantitative rating scale. Ten healthy volunteers were assessed with a breath-hold T1-weighted gradient-recalled-echo (TR/TE=129/2.2 ms, matrix 173×256) and a T2-weighted turbo spin-echo (TSE) sequence with respiratory triggering (TR/TE=3000–5000/120 ms, matrix 270×512) in axial 6-mm slices. The T1-weighted GRE protocol included a pre-saturation pulse over the mediastinal structures. Artefacts and resolution of vessel/airway structures in each lung segment were evaluated by two observers (10 volunteers, 180 segments). Cardiac and vessel pulsation artefacts predominated on T1-weighted GRE, respiration artefacts on T2-weighted TSE (lingula and middle lobe). Pre-saturation of the mediastinum reduced pulsation artefacts on T1-weighted GRE. T1-weighted GRE images were improved by bright flow signal of vessels, whereas image quality of T2-weighted TSE was reduced by black-blood effects in central parts of the lung. Delineation of lung periphery and the mediastinum was superior with T2-weighted TSE. Segmental/sub-segmental vessels (up to fourth/fifth order) and bronchi (up to third order) were identified. All 180 lung segments were imaged in diagnostic quality with at least one of the two sequences (T1-weighted GRE not diagnostic in 9 of 180, T2-weighted TSE in 4 of 180). Both sequences were found to be complementary: superior identification of gross lung anatomy with T1-weighted GRE and higher detail resolution in the periphery and the mediastinum with T2–weighted TSE.

MRI Lung Image-quality rating 

Copyright information

© Springer-Verlag 2001

Authors and Affiliations

  • J. Biederer
    • 1
  • M. Reuter
    • 1
  • M. Both
    • 1
  • C. Muhle
    • 2
  • J. Grimm
    • 1
  • J. Graessner
    • 3
  • M. Heller
    • 1
  1. 1.Department of Diagnostic Radiology, University Hospital Kiel, Arnold-Heller-Strasse 9, 24105 Kiel, GermanyGermany
  2. 2.Department of Nuclear Medicine, University Hospital Kiel, Arnold-Heller-Strasse 9, 24105 Kiel, GermanyGermany
  3. 3.Siemens Aktiengesellschaft, Hamburg, GermanyGermany

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