公开(公告)号：US4581535A

公开(公告)日：1986-04-08

申请号：US433719

申请日：1982-10-12

申请人： Takao Komaki ,  Hirosi Tanaka ,  Nobuyoshi Nakajima

发明人： Takao Komaki ,  Hirosi Tanaka ,  Nobuyoshi Nakajima

IPC分类号： A61B6/02 ,  G01T1/29 ,  G03C5/16

CPC分类号： A61B6/025 ,  G01T1/2012

摘要： A stack of many stimulable phosphor sheets and an X-ray tube are positioned with an object intervening therebetween, and moved with respect to each other around a tomographic plane in the object so as to satisfy the linear rule and the geometric rule in the course of exposure of the object to X-rays, thereby storing images of many tomographic planes in the stimulable phosphor sheets in a single recording step. The respective stimulable phosphor sheets are then exposed to a stimulating ray to cause them to emit light, the emitted light is photoelectrically read out, and the obtained electric signals are reproduced as visible tomographic images usable in diagnosis with high efficiency and accuracy. The electric signals may be superposed one upon another and reproduced as an X-ray image of any slice thickness, particularly a slice thickness of 5 mm or more, which is free from interfering shadows.

摘要翻译： 许多可激发的荧光体片和X射线管的堆叠被定位成具有介于其间的物体，并且围绕物体中的断层摄影平面相对于彼此移动，以满足线性规则和过程中的几何规则 将物体暴露于X射线，从而在单个记录步骤中将许多层析成像平面的图像存储在可刺激的磷光体片中。 然后将各个可激发的荧光体片暴露于刺激的光线，使其发光，发出的光被光电读出，并且所获得的电信号作为可用于诊断中的可见断层图像以高效率和准确度再现。 电信号可以彼此叠加并再现为任何切片厚度，特别是5mm以上的切片厚度的X射线图像，其不受干扰阴影。

公开(公告)号：US4485304A

公开(公告)日：1984-11-27

申请号：US339797

申请日：1982-01-15

申请人： Masanori Teraoka ,  Takao Komaki ,  Seiji Matsumoto

发明人： Masanori Teraoka ,  Takao Komaki ,  Seiji Matsumoto

IPC分类号： G03B42/02 ,  G01T1/00 ,  G03C5/16 ,  G01T1/11

CPC分类号： G03C5/16

摘要： A radiation image recording system having a built-in light source for erasing the fog developing in a stimulable phosphor used in a radiation image recording and reproducing method in which a radiation image is once recorded on a stimulable phosphor sheet and then read out and reproduced into a visible radiation image. The light source is positioned between a section for feeding the stimulable phosphor sheet and a section where a radiation image is recorded on the sheet. The system is also provided with a unit for sending the stimulable phosphor sheet from the radiation image recording section to a sheet receiver or a radiation image information read out and reproducing system.

摘要翻译： 一种具有内置光源的放射线图像记录系统，其用于在放射线图像记录和再现方法中使用的可刺激荧光体中消除雾化，其中放射图像曾被记录在可刺激的磷光体片上，然后读出并再现成 可见的辐射图像。 光源位于用于馈送可刺激的磷光体片的部分和放射线图像被记录在片材上的部分之间。 该系统还设置有用于将可刺激的荧光体片从辐射图像记录部分发送到片材接收器或辐射图像信息读出和再现系统的单元。

公开(公告)号：US4121101A

公开(公告)日：1978-10-17

申请号：US744119

申请日：1976-11-22

申请人： Seiji Matsumoto ,  Isoji Takahashi ,  Takao Komaki ,  Masamitsu Ishida ,  Tomotaka Kozeki ,  Kazuo Horikawa ,  Kozi Shimanuki

发明人： Seiji Matsumoto ,  Isoji Takahashi ,  Takao Komaki ,  Masamitsu Ishida ,  Tomotaka Kozeki ,  Kazuo Horikawa ,  Kozi Shimanuki

IPC分类号： G03G15/054 ,  G03G13/00

CPC分类号： G03G15/0545 ,  Y10S430/168

摘要： In Reiss chamber method or ionography, or in a method of modification or combination of these methods wherein an electrostatic latent image of an object irradiated with radiations such as X-rays is formed on an insulating image recording layer, a photoconductive material is used as the image recording layer. The charge carried on the photoconductive image recording layer is partly neutralized by the radiations received thereby. In an embodiment, a fluorescent layer is attached to the photoconductive image recording layer to accelerate the neutralization of the charge when the recording layer is exposed to the radiations. In another embodiment, the photoconductive material has a property that the photoconductivity increases as the strength of an electric field applied thereacross increases, and the image recording layer made of such a photoconductive material is uniformly exposed to light simultaneously with or after the irradiation of the radiations.

摘要翻译： 或者在Reiss室法或电离法中，或在这些方法的改进或组合的方法中，其中在绝缘图像记录层上形成用诸如X射线的辐射照射的物体的静电潜像，因此使用光导材料作为 图像记录层。 光电导图像记录层上承载的电荷被其接收的辐射部分地中和。 在一个实施例中，荧光层附着到光导图像记录层，以在记录层暴露于辐射时加速电荷的中和。 在另一个实施方案中，光电导材料具有随着施加在其上的电场强度增加而导致光电导率增加的性质，并且由这种感光材料制成的图像记录层在辐射照射之后或之后均匀地暴露于光 。

公开(公告)号：US4439682A

公开(公告)日：1984-03-27

申请号：US338734

申请日：1982-01-11

申请人： Seiji Matsumoto ,  Masanori Teraoka ,  Takao Komaki

发明人： Seiji Matsumoto ,  Masanori Teraoka ,  Takao Komaki

IPC分类号： G03B42/02 ,  G01T1/29 ,  G03C5/16 ,  G21K4/00 ,  G01T1/11

CPC分类号： G03C5/16 ,  G01T1/2016

摘要： In a radiation image recording and reproducing method in which a radiation image is once recorded in a stimulable phosphor and then read out and reproduced into a visible image, noise developing in the visible image due to repeated use of the stimulable phosphor is effectively erased by the combined use of first and second erasing steps. The first erasing is conducted to erase the radiation image previously stored in the phosphor, which requires a long period to erase, at an appropriate point of time after the phosphor is once used. The second erasing is carried out quickly to erase the fog, which develops in the phosphor after the first erasing, immediately before the phosphor is to be used for the next radiographic operation.

摘要翻译： 在辐射图像记录和再现方法中，其中放射线图像被一次记录在可刺激的荧光体中，然后读出并再现成可见图像，由于反复使用可刺激的荧光体而在可见光图像中产生的噪声被有效地消除 组合使用第一和第二擦除步骤。 进行第一擦除，以在一旦使用荧光体之后的适当时间点擦除预先存储在荧光体中的放射线图像，这需要长时间的擦除。 快速进行第二次擦除，以消除在第一次擦除之前在荧光体被用于下一次放射线照相操作之前在荧光体中产生的雾。

公开(公告)号：US4394737A

公开(公告)日：1983-07-19

申请号：US168802

申请日：1980-07-11

申请人： Takao Komaki ,  Seiji Matsumoto

发明人： Takao Komaki ,  Seiji Matsumoto

IPC分类号： G03C5/16 ,  H05G1/60 ,  G06F15/42

CPC分类号： H05G1/60 ,  G03C5/16

摘要： In radiography, a plurality of radiographic films are used for recording radiographic images of an object viewed from the same direction. For instance, a stack of radiographic films stacked together with intensifying screens is exposed to X-rays passing through an object to record the images on the films simultaneously. Alternatively, the plurality of radiographic films are exposed to X-rays passing through the object one by one with the object held still at a position. The images on the plurality of radiographic films are superposed together by electrical signal processing means to obtain an image having averaged density. Then, the gradient of the gradation of the averaged image is enhanced. The radiographic films may be stacked together with self-supporting intensifying screens to reduce the thickness of the stack of the films and intensifying screens when recording the radiographic images. Further, double-side coated intensifying screens may be used together with the stack of the films to reduce the thickness of the stack of the films and intensifying screens when recording the radiographic images.

摘要翻译： 在放射摄影中，使用多个放射照相胶片来记录从相同方向观察的物体的放射照相图像。 例如，与强化屏幕堆叠在一起的一叠放射线照相胶片暴露于穿过物体的X射线以同时在胶片上记录图像。 或者，多个放射线照相胶片暴露于穿过物体的X射线，物体保持在一个位置。 通过电信号处理装置将多个放射线照相胶片上的图像叠加在一起，以获得具有平均密度的图像。 然后，增强平均图像的灰度的梯度。 放射线照相胶片可以与自支撑增强屏幕堆叠在一起，以便当记录放射照相图像时减小胶片堆叠的厚度和增强屏幕。 此外，双面涂覆的增强屏幕可以与薄膜叠层一起使用，以便当记录放射线照相图像时减小薄膜叠层的厚度和增强屏幕。

公开(公告)号：US4602156A

公开(公告)日：1986-07-22

申请号：US547683

申请日：1983-11-01

申请人： Eiichi Asai ,  Takao Komaki ,  Yuma Adachi

发明人： Eiichi Asai ,  Takao Komaki ,  Yuma Adachi

IPC分类号： G03B42/02 ,  G01N23/04 ,  G01T1/29 ,  G03C5/16 ,  G06T1/00 ,  H04N1/407

CPC分类号： H04N1/4078 ,  G01T1/2014 ,  G03C5/16 ,  G03C2200/58

摘要： In a radiation image recording system wherein a stimulable phosphor carrying a radiation image stored therein is scanned by stimulating rays to emit light in proportion to the radiation energy stored, and the emitted light is converted to an electric signal which is processed and used to reproduce a visible image in a light-sensitive material, a value within the range of 0.2 to 0.5 and two values at least 0.5 different from each other within the range of 0.4 to 2.6 are selected as the reference optical density values of the reproduced image. An image is once recorded in the light-sensitive material by using reference signals representing the reference values, and the optical densities at the image portions corresponding to the reference values are measured. Differences between the measured values and values on a reference gradation curve are corrected so that the sensitivity is equal to the sensitivity on the reference curve at the portion corresponding to the value selected within the range of 0.2 to 0.5, and the gradient is equal to the gradient on the reference curve with respect to the density value range of 0.4 to 2.6.

摘要翻译： 在辐射图像记录系统中，其中携带其中存储的辐射图像的可刺激荧光体通过激发光线与存储的辐射能量成比例地发射光而被扫描，并且发射的光被转换成被处理并用于再现 选择感光材料中的可视图像，在0.2至0.5的范围内的值和在0.4至2.6的范围内彼此至少为0.5的两个值作为再现图像的参考光密度值。 通过使用表示参考值的参考信号将图像一次记录在感光材料中，并且测量与参考值对应的图像部分处的光密度。 校正参考灰度曲线上的测量值和值之间的差异，使得灵敏度等于在对应于在0.2至0.5的范围内选择的值的部分上的参考曲线的灵敏度，并且梯度等于 参考曲线上的梯度相对于密度值范围为0.4至2.6。

公开(公告)号：US4590517A

公开(公告)日：1986-05-20

申请号：US477542

申请日：1983-03-21

申请人： Hisatoyo Kato ,  Takao Komaki

发明人： Hisatoyo Kato ,  Takao Komaki

IPC分类号： G01N23/04 ,  A61B6/00 ,  G01T1/29 ,  G03B42/02 ,  G06T1/00 ,  H05B33/12

CPC分类号： G01T1/2014

摘要： Two or more stimulable phosphor sheets are exposed to a radiation passing through an object under conditions different from one another, and radiation images of the object at least partially different from one another are recorded on the stimulable phosphor sheets. The stimulable phosphor sheets are then scanned with stimulating rays to convert the radiation images into light, which is photoelectrically read out and converted into digital image signals. The digital image signals are subjected to a subtraction processing with respect to the corresponding picture elements of the images, thereby to obtain a signal for forming an image of a specific structure of the object.

摘要翻译： 将两个或更多个可刺激的荧光粉片暴露于彼此不同的条件下通过物体的辐射，并且至少部分不同的物体的辐射图像被记录在可刺激的荧光片上。 然后用刺激光线扫描可刺激的磷光体片，以将辐射图像转换成光，其被光电读出并转换成数字图像信号。 数字图像信号相对于图像的相应图像进行减法处理，从而获得用于形成对象的特定结构的图像的信号。

公开(公告)号：US4438333A

公开(公告)日：1984-03-20

申请号：US339795

申请日：1982-01-15

申请人： Masanori Teraoka ,  Takao Komaki ,  Seiji Matsumoto

发明人： Masanori Teraoka ,  Takao Komaki ,  Seiji Matsumoto

IPC分类号： G03B42/02 ,  G03C5/16 ,  G01T1/11

CPC分类号： G03C5/16

摘要： An apparatus for erasing the fog developing in a stimulable phosphor sheet used for a radiation image recording and reproducing system in which a radiation image is once recorded in the stimulable phosphor sheet and then read out and reproduced on a recording material. The apparatus is arranged so that stimulable phosphor sheets are taken up one at a time out of their reservoir and each is loaded into a cassette used for the recording of a radiation image. It comprises a light source for erasing the fog, which is provided between the aperture of the reservoir from which the stimulable phosphor sheets are taken up and the section at which the sheets are loaded into the cassettes.

摘要翻译： 一种用于消除用于辐射图像记录和再现系统的可刺激的磷光体片中的雾的装置，其中放射图像曾被记录在可刺激的荧光粉片中，然后在记录材料上读出和再现。 该装置被布置成使得可刺激的荧光片从其储存器中一次一个地被吸收，并且每个被加载到用于记录辐射图像的盒中。 其包括用于擦除雾的光源，其设置在从其吸收可刺激的磷光体片的储存器的孔口与将片材装载到盒中的部分之间。

公开(公告)号：US4356398A

公开(公告)日：1982-10-26

申请号：US168800

申请日：1980-07-11

申请人： Takao Komaki ,  Seiji Matsumoto ,  Masamitsu Ishida

发明人： Takao Komaki ,  Seiji Matsumoto ,  Masamitsu Ishida

IPC分类号： G03C5/16 ,  G01T1/11 ,  H04N1/40

CPC分类号： G03C5/16

摘要： In a radiographic image recording system in which a stimulable phosphor plate is exposed to X-rays to record a radiographic latent image therein, the stimulable phosphor plate is exposed to stimulating rays thereafter to emit light according to the stored energy of X-rays, and the emitted light is detected by a photodetector and converted to an image signal to be used for finally recording a visible image on a photosensitive film or the like, a plurality of stimulable phosphor plates are used for recording radiographic images of an object viewed from the same direction. The image signals read out from the plurality of stimulable phosphor plates are superposed to obtain an averaged image signal. The averaged image signal is then subjected to a gradation process for enhancing the contrast of the image.

摘要翻译： 在其中可刺激的荧光体板暴露于X射线以在其中记录放射线照相潜像的放射线照相图像记录系统中，可刺激的荧光体板暴露于其后根据存储的X射线的能量发光，并且 发射的光被光电检测器检测并转换为用于最终在感光膜等上记录可见图像的图像信号，使用多个可激发的荧光板来记录从其观察的物体的放射线照相图像 方向。 将从多个可激发的荧光体板读出的图像信号叠加以获得平均的图像信号。 然后对平均的图像信号进行用于增强图像的对比度的灰度处理。

公开(公告)号：US4038545A

公开(公告)日：1977-07-26

申请号：US693641

申请日：1976-06-07

申请人： Takao Komaki ,  Kazuo Horikawa ,  Satoru Honjo ,  Seiji Matsumoto

发明人： Takao Komaki ,  Kazuo Horikawa ,  Satoru Honjo ,  Seiji Matsumoto

IPC分类号： G03G5/02 ,  G03G13/22 ,  G03G15/054 ,  G03G13/00 ,  G03G15/00

CPC分类号： G03G5/0205 ,  G03G13/22 ,  G03G15/0545 ,  G03G5/0202

摘要： Disclosed is an electrostatic recording method for forming an electrostatic latent image on a dielectric electrostatic recording layer provided on a conductive support. The relationship between the thickness d[.mu.m] and the specific dielectric constant .epsilon..sub.s of the electrostatic recording layer is such that the ratio of d[.mu.m] to .epsilon..sub.s, i.e. d/.epsilon..sub.s [.mu.m], is not larger than 1.65[.mu.m] when the image recorded is of reflection type and not larger than 1.5[.mu.m] when it is of transmission type. The latent image formed on the recording layer is developed by use of electrophotographic liquid developer. Also disclosed is an ionizing radiation image recording method wherein ionizing radiation carrying image information is directed onto a material which generates photoelectrons or a gas which is dissociated upon receipt of the ionizing radiation to an extent corresponding to the intensity of the radiation. In this method, the ratio of the thickness of the electrostatic recording layer to the specific dielectric constant is selected to be not larger than 1.5[.mu.m] when the image is of reflection type and not larger than 1.0[.mu.m] when it is of transmission type.