MRI in lung transplant recipients using hyperpolarized 3He: comparison with CT.
J Magn Reson Imaging 2002;
15:268-74. [PMID:
11891971 DOI:
10.1002/jmri.10070]
[Citation(s) in RCA: 55] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
PURPOSE
To elucidate the ability of 3He-MRI to detect ventilation defects in lung transplant recipients, 3He-MRI was compared to CT for concordance.
MATERIALS AND METHODS
We examined 14 lung recipients using 3He-MRI on a 1.5 T MR scanner. CT served as a reference method. Up to four representative ventilation defects were defined for each lung on 3He-MRI and compared to corresponding areas on CT.
RESULTS
Altogether, 59 representative ventilation defects were defined on 3He-MRI. Plausible CT correlates were found for 29 ventilation defects; less plausible CT correlates were found for eight defects. In 22 defects (37%) no corresponding CT changes were detected. CT demonstrated correlates for ventilation defects seen on 3He-MRI in only 63% of the cases.
CONCLUSION
3He-MRI yields a clear increase in the number of detected ventilation defects compared to CT. This may have an important impact on the early detection of bronchiolitis obliterans in lung transplant recipients.
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