Detector head position calibration and correction for SPECT...

Details Detector head position calibration and correction for SPECT... Detector head position calibration and correction for SPECT...

2006-06-20

2008-12-02

Porta, David P (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

C250S252100, C250S363030, C378S020000, C378S205000, C378S206000, C378S207000, C378S208000

Reexamination Certificate

active

07459689

ABSTRACT:
A multiple point source test phantom is used for calibration of detector positioning of a nuclear medical imaging apparatus. An absolute coordinate system for the detectors is aligned to an image reconstruction space coordinate system by fitting a Gaussian surface to a peak of a center point source of said test phantom, and using displacement parameters as obtained from the fitted Gaussian surface to calculate a displacement correction parameter, which is used to move a patient bed of the imaging apparatus such that the image reconstruction space is aligned with the absolute coordinate system.

REFERENCES:
patent: 5481115 (1996-01-01), Hsieh et al.
patent: 6140650 (2000-10-01), Berlad

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