G - Physics – 01 – T
Patent
G - Physics
01
T
G01T 1/161 (2006.01)
Patent
CA 2187711
An method for identifying a sentinel lymph node associated, for example, with melanomas or breast tumor wherein a radiopharmaceutical is injected at the side of the neoplastic tissue and is permitted to migrate along alymph duct to collect at a sentinel node. The method involves locating a peak rate of photon emissions by providing a photon emissions probe with a detector, the probe being capable of receiving varying rates of emissions and providing output signals. A control system receives the output signals and forms an output representative of a photon count rate above a threshold value derived in conjunction with a base value and is actuable to increase the threshold count value. The photon emission rate of a first location having a radiopharmaceutical is measured. A second location is also measured and a determination is made between which location has an emissions rate sufficient to actuate the control system to elevate thresholds.
Magill Michael D.
Olson Karl W.
Orahood Richard C.
Thurston Marlin O.
Magill Michael D.
Mcfadden Fincham
Neoprobe Corporation
Olson Karl W.
Orahood Richard C.
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