Radiation medicine
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Comparative Study
Detection of brain metastasis: comparison of Turbo-FLAIR imaging, T2-weighted imaging and double-dose gadolinium-enhanced MR imaging.
The purpose of this study was to compare Turbo-FLAIR imaging, T2-weighted imaging, and double-dose gadolinium-enhanced MR imaging in the detection of brain metastasis. Using the three sequences, 20 consecutive patients with brain metastases were prospectively studied with a 1.5-Tesla system. Three independent, blinded readers assessed the images for the presence, size, number, and location of metastatic lesions. ⋯ There was no difference between Turbo-FLAIR imaging and gadolinium-enhanced imaging in the accuracy of detecting solitary brain metastasis (4/4, 100%). In conclusion, Turbo-FLAIR imaging is a useful, noninvasive screening modality for brain metastasis. Its use may lead to cost savings in the diagnosis of brain metastases and may impact positively the cost-effectiveness of treatment.
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We report a case of summer-type hypersensitivity pneumonitis that demonstrated air-trapping. In this case we used images at inspiratory and expiratory volumetric HRCT, which enabled us to obtain images of the same level at inspiratory and expiratory CT.