RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
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MRI-imaging using a field strength above 2 Tesla -- recently termed "highfield MRI" -- has come into clinical use in the last three years. For technical reasons, the initial application of highfield MRI concentrated on examinations of the brain. By improving the technology and solving specific problems, it has now become possible to perform total body scans. ⋯ BOLD contrast fMRI, perfusion analysis and spectroscopy all seem to improve. For total body scanning, it is already possible to examine certain areas in "1.5 Tesla quality", in some cases shortening scanning time considerably. This survey summarises the present state of knowledge, realising that the presentation might not be all-comprising since progress in this field is very dynamic.
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To study quantitative changes of lung density distributions when recording in- and expiratory static pressure-volume curves by single slice computed tomography (CT). ⋯ Recruitment and derecruitment of lung atelectasis during registration of static in- and expiratory pressure-volume loops occurred constantly, but not in a stepwise manner. CT was shown to be an appropriate method to analyse these recruitment process.