Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1985-01-22
1987-08-25
Howell, Janice A.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
378 8, 378 95, 378 99, H04N 532
Patent
active
046896708
ABSTRACT:
A method and apparatus for examining a subject by applying radiation to the subject in synchronism with a cardiac beat phase of the subject, wherein a digital subtraction is carried out between a mask image and a contrast image derived from the detected radiation which passed through the subject. Cardiac beat phase is detected by measuring the time-elapse characteristic data of image concentration. Based on the measuring time-elapse characteristic data, amplitude and phase images of the cardiac are calculated and displayed.
REFERENCES:
patent: 4204225 (1980-05-01), Mistretta
patent: 4433428 (1984-02-01), Haendle et al.
Maeda et al., "A New Cardiac Functional Imaging by Application of Fourier Analysis to Gated Blood-Pool Study. A Basic Investigation", Kakuigaku, 19th, No. 5, pp. 765-776.
R. Brennacke et al., "Digital Processing of Videoangio-Cardiographic Image Series Using a Minicomputer", IEEE Cat. No. 76CH1160-1C, 1976, pp. 255-260.
"Patterns of Ventricular Emptying by Fourier Analysis of Gated Blood-Pool Studies", Jonathan M. Links et al., The Journal of Nuclear Medicine, pp. 978-982, vol. 21, 1980.
Howell Janice A.
Kabushiki Kaisha Toshiba
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