MRI of the lung: value of different turbo spin-echo, single-shot turbo spin-echo, and 3D gradient-echo pulse sequences for the detection of pulmonary metastases.

Bruegel, M; Gaa, J; Woertler, K; Ganter, C; Waldt, S; Hillerer, C; Rummeny, EJ

Benutzer: Gast

journal article

Dokumenttyp:: journal article
Autor(en):: Bruegel, M; Gaa, J; Woertler, K; Ganter, C; Waldt, S; Hillerer, C; Rummeny, EJ
Titel:: MRI of the lung: value of different turbo spin-echo, single-shot turbo spin-echo, and 3D gradient-echo pulse sequences for the detection of pulmonary metastases.
Abstract:: PURPOSE: To compare the value of different MRI sequences of the lung for the detection of pulmonary metastases. MATERIALS AND METHODS: A total of 28 patients with 225 pulmonary metastases confirmed at multidetector-row computed tomography (MDCT) underwent MRI of the lung, including breathhold T2-weighted single-shot turbo spin-echo (half-Fourier single-shot turbo spin-echo [HASTE] and inversion recovery [IR]-HASTE) and conventional turbo spin-echo (TSE and short-tau inversion recovery [STIR]) sequences, a respiratory- and pulse-triggered black-blood STIR sequence (triggered STIR), and breathhold pre- and postcontrast volumetric interpolated 3D gradient-echo (VIBE) sequences. MR images were reviewed by three independent observers and results were correlated with MDCT, which served as standard of reference. Lesion-to-lung contrast-to-noise ratios (CNRs) and image artifacts were also assessed. RESULTS: CNRs were highest on TSE images (P< 0.001). Mean sensitivities for lesion detection with triggered STIR, TSE, and STIR were 72.0%, 69.0%, and 63.4%, respectively. With HASTE, IR-HASTE, and pre- and postcontrast VIBE, significantly lower sensitivities were obtained (P< 0.05), although artifacts due to physiological motion were less distinct with these sequences compared to TSE and STIR (P< 0.05). CONCLUSION: Conventional TSE sequences are more sensitive in depicting pulmonary metastases than single-shot TSE or 3D gradient-echo sequences. Respiratory and pulse triggering can improve lesion detection, but increases acquisition time substantially.
Zeitschriftentitel:: J Magn Reson Imaging
Jahr:: 2007
Band / Volume:: 25
Heft / Issue:: 1
Seitenangaben Beitrag:: 73-81
Sprache:: eng
PubMed:: http://view.ncbi.nlm.nih.gov/pubmed/17154370
Print-ISSN:: 1053-1807
TUM Einrichtung:: Röntgendiagnostik
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mediaTUM Gesamtbestand Einrichtungen Schools TUM School of Medicine and Health Departments Clinical Medicine Institut für Diagnostische und Interventionelle Radiologie (Prof. Makowski)Institut für Radiologie und Nuklearmedizin 2007

mediaTUM Gesamtbestand Einrichtungen Schools TUM School of Medicine and Health Ehemalige Einrichtungen Lehrstuhl für Röntgendiagnostik (Prof. Rummeny)