7. A PET scanner is built with 360 detectors around a ring, spaced 1° apart. They are numbered 1 on the horizontal axis at 0° all the way around counter-clockwise to 359°, Two coincidental signals are received, one pair on detectors 25° and 170°, and the next on detectors 60° and 300°, Draw a circle and locate the radioactive source.
7. A PET scanner is built with 360 detectors around a ring, spaced 1° apart. They are numbered 1 on the horizontal axis at 0° all the way around counter-clockwise to 359°, Two coincidental signals are received, one pair on detectors 25° and 170°, and the next on detectors 60° and 300°, Draw a circle and locate the radioactive source.
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Transcribed Image Text:7. A PET scanner is built with 360 detectors around a ring, spaced 1° apart. They are numbered 1 on the
horizontal axis at 0° all the way around counter-clockwise to 359°, Two coincidental signals are received,
one pair on detectors 25° and 170°, and the next on detectors 60° and 300°, Draw a circle and locate the
radioactive source.
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