METHOD FOR OPERATING AN X-RAY DIAGNOSTIC APPARATUS FOR DETERMINING QUALITY VALUES
    31.
    发明申请
    METHOD FOR OPERATING AN X-RAY DIAGNOSTIC APPARATUS FOR DETERMINING QUALITY VALUES 有权
    用于确定质量值的X射线诊断装置的方法

    公开(公告)号:US20090169088A1

    公开(公告)日:2009-07-02

    申请号:US12401295

    申请日:2009-03-10

    IPC分类号: G06K9/00

    摘要: A method for checking an x-ray diagnostic apparatus is provided. Fluoroscopic series of x-ray images of a technical phantom are digitally acquired and stored. Difference between a dynamic image and a background image is calculated. A measuring field is predicted. Priori information about the shape of a clinically relevant object is determined. Hough transformation on a gray value image corresponding to the difference is applied. Contrast of the object from the Hough-transformed gray value image is determined. A square of the determined contrast is calculated. A noise variance is calculated by determining a sum of a noise variance of a homogenous image region and a variance of the background image. A contrast-to-noise ratio of the determined contrast and the calculated noise variance is determined. A square of the contrast-to-noise ratio is dynamically averaged. A Clinical Relevant Fluoroscopy Performance index for the x-ray diagnostic apparatus is determined.

    摘要翻译: 提供了一种用于检查x射线诊断装置的方法。 数字获取和存储技术幻像的荧光系列X射线图像。 计算动态图像和背景图像之间的差异。 预测测量场。 确定关于临床相关对象的形状的优先信息。 应用与差异对应的灰度值图像上的霍夫变换。 确定来自霍夫变换灰度值图像的对象的对比度。 计算确定的对比度的平方。 通过确定均匀图像区域的噪声方差和背景图像的方差的和来计算噪声方差。 确定所确定的对比度和所计算的噪声方差的对比噪声比。 动态平均对比噪声比的平方。 确定X线诊断仪的临床相关荧光检查性能指标。

    Method and device for noise suppression in medical images
    32.
    发明申请
    Method and device for noise suppression in medical images 有权
    医学图像中噪声抑制的方法和装置

    公开(公告)号:US20090148015A1

    公开(公告)日:2009-06-11

    申请号:US12313566

    申请日:2008-11-21

    IPC分类号: G06K9/00

    摘要: The invention relates to a method for noise suppression in medical images comprising steps of measuring the gradient field strength of an image pixel and selecting a suitable filter mask for noise suppression as a function of the gradient field strength, with the value of the gradient field strength being compared with a predetermined threshold value. The method is repeated when an additional image pixel is selected. A decision is made per read-in image pixel as to which type of filter mask is used for filtering. A selection can be made between filter masks of different sizes or isotropic or anisotropic or directional filter masks. The decision is based on the measured gradient field strength of the respective pixel. The use of different filter masks allows the signal-to-noise ratio to be improved, without distorting structures like edges for instance and without generating artificial structures in homogenous noise regions.

    摘要翻译: 本发明涉及一种医学图像中的噪声抑制方法,包括以下步骤:测量图像像素的梯度场强,并根据梯度场强度选择合适的噪声抑制滤波器掩模,梯度场强 与预定阈值进行比较。 当选择附加图像像素时重复该方法。 每个读入图像像素决定使用哪种类型的滤波器掩码进行滤波。 可以选择不同尺寸的滤光片或各向同性或各向异性或方向滤光片。 该决定基于相应像素的测量的梯度场强度。 使用不同的滤波器掩模允许提高信噪比,而不会像边缘这样的结构变形,而不会在同质噪声区域中产生人造结构。

    Method for the improved display of co-registered 2D-3D images in medical imaging
    34.
    发明申请
    Method for the improved display of co-registered 2D-3D images in medical imaging 失效
    用于改进在医学成像中共同注册的2D-3D图像的显示的方法

    公开(公告)号:US20070025605A1

    公开(公告)日:2007-02-01

    申请号:US11492432

    申请日:2006-07-25

    IPC分类号: G06K9/00 G06K9/32

    摘要: The present invention relates to a method, which assists a doctor for instance in orientation in 2D fluoroscopy images. The present invention relates here to a method for displaying co-registered 2D-3D images in medical imaging, comprising the following steps: determine a 3D or 2D projection which is congruent with a 2D image from a 3D image data set, and overlaid display of the 2D image with the 3D or 2D projection on a monitor, characterized in that the two image parts of the two overlaid images can be adjusted and a shift in the two overlaid images which can be adjusted in at least one direction is enabled.

    摘要翻译: 本发明涉及一种辅助医生例如2D荧光透视图像中的取向的方法。 本发明涉及用于在医学成像中显示共同注册的2D-3D图像的方法,包括以下步骤:从3D图像数据集确定与2D图像一致的3D或2D投影,并重叠显示 具有在监视器上的3D或2D投影的2D图像,其特征在于可以调整两个重叠图像的两个图像部分,并且能够在至少一个方向上调整的两个重叠图像中的偏移。

    Method for controlling the dose or the dose rate when recording x-ray images
    35.
    发明申请
    Method for controlling the dose or the dose rate when recording x-ray images 有权
    记录x射线图像时控制剂量或剂量率的方法

    公开(公告)号:US20060233304A1

    公开(公告)日:2006-10-19

    申请号:US11402329

    申请日:2006-04-11

    IPC分类号: H05G1/42

    摘要: With a method for controlling the dose or dose rate when recording x-ray images by means of a detector comprising image elements which record a plurality of dose data values, an actual value is determined for the dose or dose rate from the totality of the data values recorded by the image elements of a predetermined image segment, said actual value being compared with a predetermined target value in order to control the dose or dose rate when recording a further x-ray image. In accordance with the invention, the actual value is determined such that on the basis of a frequency distribution of the dose data values of the image elements assigned to the dominant, a p-quantile is determined, and that the dose data value assigned to the p-quantile is used to determine the actual value.

    摘要翻译: 利用包括记录多个剂量数据值的图像元素的检测器记录X射线图像时的剂量或剂量率的控制方法,根据数据的全部来确定剂量或剂量率的实际值 由预定图像段的图像元素记录的值,将所述实际值与预定目标值进行比较,以便在记录另外的X射线图像时控制剂量或剂量率。 根据本发明,确定实际值,使得基于分配给主导的图像元素的剂量数据值的频率分布,确定p分位数,并且分配给 p分位数用于确定实际值。

    Fluorinated 1,3-benzo- and 1,3-pyrido-dioxoles, their preparation and
their use
    37.
    发明授权
    Fluorinated 1,3-benzo- and 1,3-pyrido-dioxoles, their preparation and their use 失效
    氟化1,3-苯并-1,3-二氧杂环戊烯,其制备及其用途

    公开(公告)号:US5420309A

    公开(公告)日:1995-05-30

    申请号:US145431

    申请日:1993-10-29

    摘要: Novel fluorinated 1,3-benzo- and 1,3-pyrido-dioxoles of formula (I): ##STR1## in which A is C-R.sup.4 or N,X is hydrogen, fluorine, chlorine or bromine andR.sup.1 to R.sup.4 can be identical to or different from one another and are each hydrogen, halogen, C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, halogeno-C.sub.1 -C.sub.6 -alkyl, C.sub.6 -C.sub.10 -aryl, CHO, COOH, COCl, CN, OH, NCO, COO--C.sub.1 -C.sub.6 -alkyl, NO.sub.2, NH.sub.2, NH--C.sub.1 -C.sub.6 -alkyl, N(C.sub.1 -C.sub.6 -alkyl).sub.2, SO.sub.2 Cl, SO.sub.3 H, SO.sub.3 Na or SO.sub.3 K,it also being possible for two adjacent radicals from the series R.sup.1 to R.sup.4 together to be an optionally substituted --CH.dbd.CH--CH.dbd.CH-- bridge, processes for their preparation and their use for the preparation of plant protection agents.

    摘要翻译: 式(I)的新型氟化1,3-苯并-1,3-二氧杂环戊烯:其中A为C-R4或N,X为氢,氟,氯或溴,R1为 R 4可以彼此相同或不同,各自为氢,卤素,C 1 -C 6 - 烷基,C 1 -C 6 - 烷氧基,卤代-C 1 -C 6 - 烷基,C 6 -C 10 - 芳基,CHO,COOH,COCl,CN ,OH,NCO,COO-C 1 -C 6烷基,NO 2,NH 2,NH-C 1 -C 6烷基,N(C 1 -C 6烷基)2,SO 2 Cl,SO 3 H,SO 3 Na或SO 3 K, R1至R4的基团一起为任选取代的-CH = CH-CH = CH-桥,其制备方法及其用于制备植物保护剂的用途。

    Process for preparing 1-fluorocyclopropyl methyl ketone
    39.
    发明授权
    Process for preparing 1-fluorocyclopropyl methyl ketone 失效
    制备1-氟环丙基甲基酮的方法

    公开(公告)号:US5371295A

    公开(公告)日:1994-12-06

    申请号:US220147

    申请日:1994-03-30

    摘要: A new process for the preparation of 1-fluorocyclopropyl methyl ketone of the formula ##STR1## which process comprises a) in a first step, reacting 2-acetyl-2-chloro-4-butanolide of the formula ##STR2## with an addition product of triethylamine and hydrogen fluoride of the formula(C.sub.2 H.sub.5).sub.3 N.n HF in which n represents the numbers 1, 2 or 3, in the presence of a diluent at a temperature between 20.degree. C. and 120.degree. C. andb) in a second step, reacting the resulting 2-acetyl-2-fluoro-4-butanolide of the formula ##STR3## with a nucleophilic agent in the presence of a diluent at a temperature between 50.degree. C. and 200.degree. C. New halogenoketones of the formula ##STR4## in which Hal represents chlorine or bromine.

    摘要翻译: 用于制备式(I)的1-氟环丙基甲基酮的新方法该方法包括:a)在第一步中,使式“IMAGE”的2-乙酰基-2-氯-4-丁醇酯与加成产物 在20℃至120℃的温度下,稀释剂存在下,式(C2H5)3N.nHF的三乙胺和氟化氢,其中n代表数字1,2或3,b)在 第二步,在50℃至200℃的温度下,在稀释剂存在下,使所得的式“IMAGE”的2-乙酰基-2-氟-4-丁醇酯与亲核试剂反应。新的卤代酮 其中Hal表示氯或溴的式“IMAGE”。

    Process for preparing 1-fluorocyclopropyl methyl ketone
    40.
    发明授权
    Process for preparing 1-fluorocyclopropyl methyl ketone 失效
    制备1-氟环丙基甲基酮的方法

    公开(公告)号:US5336809A

    公开(公告)日:1994-08-09

    申请号:US25194

    申请日:1993-03-02

    摘要: A new process for the preparation of 1-fluorocyclopropyl methyl ketone of the formula ##STR1## which process comprises a) in a first step, reacting 2-acetyl-2-chloro-4-butanolide of the formula ##STR2## with an addition product of triethylamine and hydrogen fluoride of the formula(C.sub.2 H.sub.5).sub.3 N.multidot.n HF in whichn represents the numbers 1, 2 or 3,in the presence of a diluent at a temperature between 20.degree. C. and 120.degree. C. andb) in a second step, reacting the resulting 2-acetyl-2-fluoro-4-butanolide of the formula ##STR3## with a nucleophilic agent in the presence of a diluent at a temperature between 50.degree. C. and 200.degree. C.New halogenoketones of the formula ##STR4## in which Hal represents chlorine or bromine.

    摘要翻译: 用于制备式(I)的1-氟环丙基甲基酮的新方法该方法包括:a)在第一步中,使式“IMAGE”的2-乙酰基-2-氯-4-丁醇酯与加成产物 的三乙胺和氟化氢(C 2 H 5)3 N x n HF,其中n代表数字1,2或3,在稀释剂存在下,温度在20℃至120℃之间,b)在第二 在50℃至200℃的温度下,在稀释剂存在下,使所得到的式“IMAGE”的2-乙酰基-2-氟-4-丁醇酯与亲核试剂反应。将新式卤代酮 其中Hal代表氯或溴。