Fiducial positioning cup
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jan 4, 2000
Issued Date -
N/A
app pub date -
Dec 8, 1997
filing date -
Dec 8, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A fiducial positioning cup (86) has a hemispherical well (92) in its top and a central bore (94) from a bottom of the hemispherical well (92) to a base of the positioning cup (86). The fiducial cup (86) is then attached to the skin (88) of a patient. A needle (110) is passed through the fiducial positioning cup (86) to mark an area of the patient's skin (88) with a tattoo (112). Fiducials (84) are secured in the fiducial positioning cups (86). Magnetic resonance or other diagnostic images are taken. Once the images are taken, the fiducials (84) and fiducial positioning cups (86) are removed. The tattoo mark (112) remains. The fiducial positioning cups (86) are reattached when a stereotactic procedure is to be performed. The needle (110) is passed through the fiducial cups (86) and a tip of the needle (110) is aligned with the tattooed mark (112) on the patient's skin (88). The fiducial cup (86) is then lowered and centered over the tattooed mark (112). A stereotactic wand (36) is aligned with the magnetic resonance image by placing a tip (42) of the wand (36) in the fiducial cups (86) and emitting signals. The stereotactic system decodes the signals to identify where the tip (42) of the wand (36) is on the magnetic resonance image.
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