Dependency of the TINA DODECANTS Algorithm on Scanner Manufacturer and Slice Orientation
نویسنده
چکیده
This report describes the application of the TINA DODECANTS algorithm to multiple MRI image volumes from the same subject, acquired using different slice orientations and different scanners. Coronal and axial inversion recovery MR image volumes of the head were obtained from a single normal volunteer, using two 1.5T MRI scanners from different manufacturers. The TINA DODECANTS algorithm was then applied to measure the cerebrospinal fluid (CSF) volume in each image volume, and the results compared to previous measurements described in TINA Memo no. 2004-002. The comparison indicated that the variation in CSF volume with slice direction is minimal, but that the measured volume could vary by up to a factor of 2 across different scanners. We therefore conclude that, whilst the technique can be used to study variations across image volumes from multiple subjects acquired using the same scanner and scan parameters, image volumes from multiple scanners cannot be reliably combined into a single study.
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