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1. 发明授权

US4805080A Power supply circuit for an X-ray tube 失效
标题翻译：用于X射线管的电源电路
公开(公告)号：US4805080A
公开(公告)日：1989-02-14
申请号：US133500
申请日：1987-12-16
申请人： Tero Nieminen
发明人： Tero Nieminen
IPC分类号： H05G1/20 , H05G1/32 , H02H7/122
CPC分类号： H05G1/20
摘要： The invention relates to a power supply circuit for an X-ray tube for converting direct current to high-frequency pulses and including at least two transistors (8, 9) whose collector-emitter circuits are controlled by means of a pulse-width modulator (5) through base control transformers (12) in a manner that transistors (8, 9) operate in push-pull fashion, one terminal (+) of a direct-current source being connected to the collector-emitter circuit of transistors (8, 9). The collector-emitter circuit of each transistor (8, 9) is separately connected through its own transformer (23, 23a) to said one terminal (+) of a direct-current source in a manner that the primary windings (24, 24a) of transformers (23, 23a) serve as ballasts limiting the current passing through transistors (8, 9) and the secondary windings (25, 25a) is connected in series with diodes (26) between the terminals terminals (+ and -) of a direct-current source.
摘要翻译：本发明涉及一种用于将直流电转换成高频脉冲并包括至少两个晶体管（8,9）的X射线管的电源电路，其中集电极 - 发射极电路通过脉冲宽度调制器 5）通过基极控制变压器（12）以晶体管（8,9）以推挽方式工作的方式，直流电源的一个端子（+）连接到晶体管的集电极 - 发射极电路（8， 9）。每个晶体管（8,9）的集电极 - 发射极电路通过其自身的变压器（23,23a）分别连接到直流电源的一个端子（+），使得初级绕组（24,24a）变压器（23,23a）用作限制通过晶体管（8,9）的电流的镇流器，并且次级绕组（25,25a）与二极管（26）串联连接在二极管（26）的端子（+和 - ）之间直流电源。

2. 发明授权

US4819254A Method of and apparatus for recording and reproducing image information in panoramic x-ray photography 失效
标题翻译：在全景X射线摄影中记录和再现图像信息的方法和装置
公开(公告)号：US4819254A
公开(公告)日：1989-04-04
申请号：US5222
申请日：1987-01-20
申请人： Timo Nieminen , Tero Nieminen
发明人： Timo Nieminen , Tero Nieminen
IPC分类号： A61B6/14 , G03B42/04 , A61B6/00 , H05G1/60
CPC分类号： A61B6/14 , G03B42/042
摘要： The invention relates to a method of and an apparatus for recording image information in panoramic X-ray photography. The total information contained in a beam of X-rays penetrated through an object is recorded on a memory disc, whose configuration is substantially the same as that of an object to be imaged, such as a dental arch, said memory disc being kept stationary during the filming relative to the object to be imaged. The memory disc is used for producing or presenting layerwise reproduced images of desired layers. The preparation of reproduced images from the memory disc can be performed on a principle corresponding to conventional panoramic tomography with the exception that the object to be imaged is a memory disc.
摘要翻译：本发明涉及一种用于在全景X射线摄影中记录图像信息的方法和装置。包含在穿过物体的X射线束中的总信息被记录在存储盘上，其存储盘的构造与诸如牙弓的待成像对象的构造基本相同，所述存储盘在相对于要成像的物体的拍摄。存储盘用于产生或呈现所需层的分层再现图像。可以根据与常规全景断层摄影相对应的原理来执行来自存储盘的再现图像的准备，除了要成像的对象是存储盘。

3. 发明授权

US4815115A Method of photographing an object with a panoramic X-ray apparatus fitted with automatic exposure 失效
标题翻译：用自动曝光的全景X射线设备拍摄物体的方法
公开(公告)号：US4815115A
公开(公告)日：1989-03-21
申请号：US11046
申请日：1987-02-05
申请人： Tero Nieminen , Timo Nieminen
发明人： Tero Nieminen , Timo Nieminen
IPC分类号： G01N23/04 , A61B6/14 , G03B37/00 , G03B42/02 , H05G1/26 , H05G1/44 , A61B6/04
CPC分类号： A61B6/14 , H05G1/26 , H05G1/44
摘要： The invention relates to a method of photographing a desired object with a panoramic X-ray apparatus fitted with automatic exposure, comprising an X-ray generator (4, 5), an X-ray tube (5) and a film (7) with its holder. In the method, the detection of a cone of rays (9) penetrated through an object is effected before the actual filming is started and, after the detection, the filming is effected by using a cone of rays (6), directed so as to bypass a detector (1).
摘要翻译：本发明涉及一种利用装备有自动曝光的全景X射线装置拍摄所需物体的方法，包括X射线发生器（4,5），X射线管（5）和具有其持有人。在该方法中，在实际拍摄开始之前，进行穿透物体的光线（9）的检测，并且在检测之后，通过使用光线（6）进行成像，绕过检测器（1）。

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