发明名称 |
RAJIOGURAFUISOCHI |
摘要 |
A radiography apparatus comprises a radiation source which is arranged to supply radiation spectra of different energies. The apparatus also comprises a detector which can be adjusted for the radiation spectra so that a strong wavelength discrimination occurs in the measurement signals. In a detector comprising an ionization chamber, there is arranged an auxiliary electrode which can be adjusted in phase with the radiation source so that soft radiation of a soft source spectrum or hard radiation of a hard source spectrum is comparatively favored with respect to its contribution to the measurement signal. |
申请公布号 |
JPH0235255(B2) |
申请公布日期 |
1990.08.09 |
申请号 |
JP19810179145 |
申请日期 |
1981.11.10 |
申请人 |
FUIRITSUPUSU FURUUIRANPENFUABURIKEN NV |
发明人 |
FURANSU UETSUSERU ZONNEBERUTO;KORUNERISU KURAMERU |
分类号 |
G01N23/04;A61B6/00;A61B6/02;A61B6/03;G01T1/185;G01T1/29;H01J47/02 |
主分类号 |
G01N23/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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