Boats and bridges
Wednesday, September 30, 2009
e of abdomen with contrast, you see the right kidney.
Thursday, September 24, 2009
Thursday, September 10, 2009
spiral ct
This photo simulates the path that the x-ray beam makes as spiral CT data acquisition of the abdomen is being made. The highlighted area is a man's stomach (man is lying on his back with his arms over his head).
In all original CT scanners (1974 to 1987), the x-ray power was transferred to the x-ray tube using high voltage cables wrapped around an elaborate set of rotating drums and pulleys. The rotating frame (or gantry) would spin 3600 in one direction and make an image (or a slice), and then spin 3600 back in the other direction to make a second slice. In between each slice, the gantry would come to a complete stop and then reverse directions while the patient table would be moved forward by an increment equal to the slice thickness.
The interactive T2 weighted image series shows the skull base starting at the cranial base. The sequence is strong T2 weighted in order to obtain very high contrast between cerebro spinal fluid (CSF), nerves, vessels and temporal bone. The 3D pulse sequences with thin slices is tailored to the assessment of brain nerves (e.g. cochlear nerve, facial nerve) as well as the fluid filled inner ear structures, e.g. cochlea, vestibule. The 3D data set with high spatial resolution also allows multiplanar reconstruction in all planes
This photo simulates the path that the x-ray beam makes as spiral CT data acquisition of the abdomen is being made. The highlighted area is a man's stomach (man is lying on his back with his arms over his head).
In all original CT scanners (1974 to 1987), the x-ray power was transferred to the x-ray tube using high voltage cables wrapped around an elaborate set of rotating drums and pulleys. The rotating frame (or gantry) would spin 3600 in one direction and make an image (or a slice), and then spin 3600 back in the other direction to make a second slice. In between each slice, the gantry would come to a complete stop and then reverse directions while the patient table would be moved forward by an increment equal to the slice thickness.
The interactive T2 weighted image series shows the skull base starting at the cranial base. The sequence is strong T2 weighted in order to obtain very high contrast between cerebro spinal fluid (CSF), nerves, vessels and temporal bone. The 3D pulse sequences with thin slices is tailored to the assessment of brain nerves (e.g. cochlear nerve, facial nerve) as well as the fluid filled inner ear structures, e.g. cochlea, vestibule. The 3D data set with high spatial resolution also allows multiplanar reconstruction in all planes
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