Abstract: Contour information is extracted from nuclear medicine projection data on a subject not subjected to a scattering correction and an absorption correction by performing a pixel value binarization processing based on a threshold scheme. If necessary, an interpolation processing is performed before reconstructing an image through an image reconstruction processing. Based on the reconstructed image, a second binarization processing is performed to generate a contour image.

Abstract: A measuring image acquisition means 2 acquires a 3-D measuring image in which a phantom filled with the radioactive material into a necessary part is measured with a SPECT system. A measuring image Fourier transform means 4 operates the 3-D measuring image with the 3-D Fourier transform. An actual image acquisition means 6 acquires a 3-D actual image of the part of the phantom which is filled with the radioactive material. An actual image Fourier transform means 8 operates a 3-D actual image with the 3-D Fourier transform. An error image calculation means 10 divides each Fourier transform value of the 3-D Fourier transform measuring image by each Fourier transform value of the corresponding 3-D Fourier transform actual image and acquires a 3-D Fourier transform error image. A point spread function calculation means 12 operates the 3-D Fourier transform error image with the inverse Fourier transform and determines the point spread function image by calculation.

Abstract: Contour information is extracted from nuclear medicine projection data on a subject not subjected to a scattering correction and an absorption correction by performing a pixel value binarization processing based on a threshold scheme. If necessary, an interpolation processing is performed before reconstructing an image through an image reconstruction processing. Based on the reconstructed image, a second binarization processing is performed to generate a contour image.

Abstract: A measuring image acquisition means 2 acquires a 3-D measuring image in which a phantom filled with the radioactive material into a necessary part is measured with a SPECT system. A measuring image Fourier transform means 4 operates the 3-D measuring image with the 3-D Fourier transform. An actual image acquisition means 6 acquires a 3-D actual image of the part of the phantom which is filled with the radioactive material. An actual image Fourier transform means 8 operates a 3-D actual image with the 3-D Fourier transform. An error image calculation means 10 divides each Fourier transform value of the 3-D Fourier transform measuring image by each Fourier transform value of the corresponding 3-D Fourier transform actual image and acquires a 3-D Fourier transform error image. A point spread function calculation means 12 operates the 3-D Fourier transform error image with the inverse Fourier transform and determines the point spread function image by calculation.

Abstract: A head model according to one example of an embodiment is a head model that may be provided for use in the calibration for a brain-imaging device, where a part corresponding to the skull and a part corresponding to at least one specific region of the brain are each formed by a continuous cavity with no cuts other than an opening for liquid injection.

Abstract: An in-line type magnetic head supporting apparatus of the present invention including a first fixed part secured to a magnetic head slider mounted with a magnetic head in a floatable manner, a second fixed part secured to a load beam which presses the magnetic head slider toward the magnetic disc, and a gimbal mechanism comprising a spring part connecting the first and second fixed parts and enabling the pitching and rolling movements of the magnetic head slider in the radial direction of the magnetic disc, and further includes a restricting mechanism for preventing the sideslip of a pivot formed on the first fixed part as a fulcrum for pitching and rolling movements. Furthermore, in order to increase the flexural rigidity of the spring part of the gimbal mechanism in the radial direction, its lateral length is enlarged and slits are formed in the spring part to reduce the torsional rigidity thereby to prevent the inteference of the pitching and rolling movements.