Nuclear medical diagnosis apparatus

Details Nuclear medical diagnosis apparatus Nuclear medical diagnosis apparatus

2008-02-28

2009-12-01

Porta, David P (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

Reexamination Certificate

active

07626172

ABSTRACT:
A nuclear medial diagnosis apparatus is used for performing diagnosis by administering a medicine marked with a radioactive isotope into an examinee and by using an image obtained by detecting gamma rays emitted from a particular organ or tumor where the medicine is accumulated. An image (an image created by an image creation unit) is created by a signal (a signal as an output from a radiation detector) corresponding to the energy of the gamma ray detected by a radiation detector. The image includes a contamination component attributed to gamma scattering in the radiation detector. An image correction operation unit performs a convolution operation to obtain a contamination image. The contamination image is subtracted by a corrected image creation unit. Thus, it is possible to prevent image degradation by the gamma ray scattering in the radiation detector.

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Ichihara, et al., “Compton Scatter Compensation Using the Triple-Energy Window Method for Single-and Dual-Isotope SPECT” The Journal of Nuclear Medicine, vol. 34, No. 12, pp. 2216-2221, Dec. 1993.

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