Radiant energy – Source with recording detector – Using a stimulable phosphor
Patent
1996-01-24
1996-12-10
Porta, David P.
Radiant energy
Source with recording detector
Using a stimulable phosphor
378 37, G01N 2304
Patent
active
055833462
ABSTRACT:
In a method for detecting a prospective abnormal pattern, a stimulable phosphor sheet, on which a radiation image of an object has been stored, is exposed to stimulating rays, which cause the stimulable phosphor sheet to emit light in proportion to the amount of energy stored thereon during its exposure to radiation. The emitted light is detected by a photoelectric read-out device, and an image signal representing the radiation image is thereby obtained. A prospective abnormal pattern is detected from the radiation image in accordance with the obtained image signal. During the detection of the prospective abnormal pattern, in accordance with the image signal, calculations are made to find a normalized read-out sensitivity and a normalized latitude, which are equivalent to read-out conditions appropriate for obtaining a visible image reproduced from the radiation image. A predetermined threshold value, which is used in detecting the prospective abnormal pattern, is set to be a large value as the normalized read-out sensitivity becomes large and/or as the normalized latitude becomes small.
REFERENCES:
patent: 4527060 (1985-07-01), Suzuki et al.
patent: 5046147 (1991-09-01), Funahashi et al.
patent: 5365429 (1994-11-01), Carman
patent: 5515450 (1996-05-01), Takeo et al.
"Detection of Tumor Patterns in DR Images (Iris Filter)" Collected Papers of the Institute of Electronics and Communication Engineers of Japan, D-II, vol. J75-D-II, No. 3, pp. 663-670, Mar., 1992.
"Extraction of Small Calcified Patterns with a Morphology Filter Using a Multiply Structure Element" Collected Papers of the Institute of Electronics and Communication Engineers of Japan, D-II, vol. J75-D-II, No. 7, pp. 1170-1176, Jul., 1992.
"Fundamentals of Morphology and Its Application to Mammogram Processing," Medical Imaging Technology, vol. 12, No. 1, pp. 59-66, Jan., 1994.
Bruce David Vernon
Fuji Photo Film Co. , Ltd.
Porta David P.
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