Method of evaluating the resolution of a volumetric imaging...

Details Method of evaluating the resolution of a volumetric imaging... Method of evaluating the resolution of a volumetric imaging...

2006-06-19

2011-12-13

Thomas, Courtney (Department: 2882)

X-ray or gamma ray systems or devices

Accessory

Testing or calibration

C378S018000

Reexamination Certificate

active

08075183

ABSTRACT:
A method for evaluating the spatial resolution of a volumetric medical imaging system comprises imaging an image phantom including a sphere surrounded by a uniform medium. The image phantom is imaged and the resulting volumetric data set is used to generate an edge response function in three dimensions. Differentiating the edge response function produces a plane spread function. The method simultaneously measures the spatial resolution in all directions, providing a bulk measurement resolution. Alternatively, the edge response function may be assembled in a manner so as to independently measure the axial and trans-axial resolution of the volumetric imaging system.

REFERENCES:
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Seifert et al. (2002) “Resolving Power of 3D X-ray Mocrotomography Systems” Medical Imaging 2002: Physics of Medical Imaging —Proceedings of SPIE vol. 4682, pp. 407-413.
Seifert, et al.: “Resolving Power of 3D X-ray Microtomography Systems”, p. 407-413, vol. 4682, Medical Imaging 2002, Proceedings of SPIE, 2002.
Reimann, et al.: “Direct Measurement of Resolution in Volumetric Imaging Systems”, pp. 1784-1787, vol. 4, Nuclear Science Symposium and Medical Imaging Conference, 1994.

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