Fast T1- and T2-weighted pulmonary MR-imaging in patients with bronchial carcinoma
| Autor: | I. Bobis, Ralf-Harto Hübner, M. Reuter, J. Schultze, Martin Heller, Burkhard Bewig, Jürgen Biederer, Marcus Both, R. Noth |
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| Rok vydání: | 2005 |
| Předmět: |
Male
medicine.medical_specialty Atelectasis medicine Carcinoma Humans Radiology Nuclear Medicine and imaging Prospective Studies Lymph node Aged Aged 80 and over Lung business.industry Respiratory disease Mediastinum General Medicine Middle Aged medicine.disease Magnetic Resonance Imaging medicine.anatomical_structure Carcinoma Bronchogenic Coronal plane Female Radiology Tomography business Artifacts Tomography X-Ray Computed |
| Zdroj: | European journal of radiology. 53(3) |
| ISSN: | 0720-048X |
| Popis: | A prospective study to evaluate the diagnostic potential and limitations of three fast MRI sequences in patients with bronchial carcinoma based on the comparison with spiral CT.Three fast chest MRI sequences from 20 patients with central or peripheral bronchial carcinoma were evaluated by two observers for relation of tumour to adjacent structures, lymph node enlargement, additional pulmonary lesions and artefacts. The information from MR-imaging was compared with the results from spiral CT. MRI comprised a T1-3D-GRE breath-hold examination ("VIBE", TR/TE 4.5/1.9 ms, flip-angle 12 degrees , matrix 502 x 512, 2.5 mm coronal slices), a breath-hold, T2-HASTE sequence (TR/TE 2000/43 ms, matrix 192 x 256, 10 mm coronal slices) and a respiration-triggered T2-TSE sequence (TR/TE 3000-6000/120 ms, matrix 270 x 512, 6 mm transverse slices). The FOV was adapted individually (380-480 mm).The presence of the primary bronchial carcinoma and infiltration of thoracic structures by tumour tissue could be demonstrated by all sequences. VIBE sequence was more suitable for detecting small pulmonary nodules than the other MRI examinations, but compared to CT still 20% of these lesions were missed. Contrary to VIBE and T2-weighted TSE scans, HASTE sequence was limited in imaging mediastinal lymph nodes due to missing relevant findings in 2/20 patients. HASTE images significantly provided the lowest rate of artefacts in imaging lung parenchyma (P0.001 in peripheral parenchyma), but spatial resolution was limited in this sequence. Concerning the differentiation between tumour and adjacent atelectasis (n = 8), T2-weighted TSE imaging was superior to CT and VIBE in all cases and to HASTE sequence in 4/8 patients.The combination of VIBE and HASTE sequence allows for an adaequate imaging of thoracic processes in patients with bronchial carcinoma, limited only in visualizing small pulmonary nodules. To obtain more detail resolution and to differentiate tumour tissue from adjacent atelectasis, T2-TSE examination may be added in selected cases. |
| Databáze: | OpenAIRE |
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