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51. 发明授权

US10006808B2 Adjusting gain of detector 有权
公开(公告)号：US10006808B2
公开(公告)日：2018-06-26
申请号：US15334200
申请日：2016-10-25
申请人： SHENYANG NEUSOFT MEDICAL SYSTEMS CO., LTD.
发明人： Jian Zhao , Nan Li , Guocheng Wu , Baowei Xu , Changqing Fu , Guodong Liang
IPC分类号： G01D18/00 , G01J1/44 , H01J43/30
CPC分类号： G01J1/44 , G01J2001/4406 , G01J2001/4453 , H01J43/30
摘要： A method of adjusting a gain of a detector is provided in the present disclosure. According to an example, whether a gain of a photomultiplier tube in the detector meets a gain determination condition may be determined, where the gain determination condition may indicate that an absolute of a difference between the gain of the photomultiplier tube and a target gain is within a predetermined numerical range. When the gain of the photomultiplier tube does not meet the gain determination condition, a voltage of the photomultiplier tube may be adjusted, such that the gain of the photomultiplier tube meets the gain determination condition.

52. 发明授权

US09973167B2 Impedance matching circuit and method for radio frequency transmission coil 有权
公开(公告)号：US09973167B2
公开(公告)日：2018-05-15
申请号：US15231571
申请日：2016-08-08
申请人： Shenyang Neusoft Medical Systems Co., Ltd.
发明人： Jianhua Shi , Hongbing Hu , Huidong Gu , Haiquan Li , Hongwei Wang , Lin Wu , Haobo Jin
IPC分类号： H03H7/38 , H03H7/40 , G01R33/36
CPC分类号： H03H7/40 , G01R33/3628
摘要： Impedance matching circuits and methods for radio frequency (RF) transmission coil are disclosed. An example impedance matching circuit includes a coil matching circuit, a RF power detection circuit, and a spectrometer. The spectrometer outputs an output voltage reversely applied on a varactor diode of the coil matching circuit. An impedance of the coil matching circuit is changed based on the output voltage. The spectrometer outputs a RF transmission signal to the RF power detection circuit, receives a power of a RF reflected signal corresponded to the output voltages. The spectrometer receives powers of different RF reflected signals corresponded to different output voltages, and assigns an output voltage corresponded to a minimum power of the RF reflected signals as an impedance matching voltage, where an equivalent impedance of the coil matching circuit and the RF transmission coil matches with an impedance of RF transmission lines.

53. 发明授权

US09861325B2 Restoring CT scan data 有权
公开(公告)号：US09861325B2
公开(公告)日：2018-01-09
申请号：US14940155
申请日：2015-11-13
申请人： Shenyang Neusoft Medical Systems Co., Ltd.
发明人： Shanshan Lou , Jiangwei Zhao
IPC分类号： A61B6/03 , A61B6/00 , G06T11/00
CPC分类号： A61B6/032 , A61B6/5205 , G06T11/005
摘要： A method for restoring CT scan data is disclosed. The method may comprise: building a data collecting model with respect to a specific direction of a detector based a response curve of the detector. In some examples, the specific direction can indicate a channel direction and a slice direction of the detector. During a CT scanning, based on the data collecting model, X-ray intensity values detected by the detectors in the specific direction can be acquired. A function can be determined such that it satisfies the data collecting model, a continuity condition and a boundary condition, An X-ray intensity value can be obtained by substituting the coordinate value of a point in the specific direction into the function.

54. 发明授权

US09836825B2 Dose modulated X-ray scanning 有权
公开(公告)号：US09836825B2
公开(公告)日：2017-12-05
申请号：US14843754
申请日：2015-09-02
申请人： SHENYANG NEUSOFT MEDICAL SYSTEMS CO., LTD.
发明人： Shanshan Lou , Ling Pang
IPC分类号： G06K9/00 , G06T5/00 , A61B6/00 , G06T11/00
CPC分类号： G06T5/002 , A61B6/5205 , A61B6/5258 , A61B6/542 , A61B6/583 , G06T11/005 , G06T2207/10081 , G06T2207/20192
摘要： A method and a device for dose modulated X-ray scanning, where, according to an example of the method, a theoretical X-ray scanning dose for a scanning region may be calculated according to a target image quality standard set for the scanning region and a reference data level determined for the scanning region. Then, an X-ray attenuation difference between each data level corresponding to the scanning region and the reference data level may be calculated according to the theoretical X-ray scanning dose. In this way, a data level where the X-ray attenuation difference with the reference data level is higher than a threshold may be selected out from the data levels corresponding to the scanning region as a target to be de-noised, and a noise reduction may be performed for the target to be de-noised.

55. 发明授权

US09810629B2 Recognition of position of crystal in nuclear detector 有权
公开(公告)号：US09810629B2
公开(公告)日：2017-11-07
申请号：US15277304
申请日：2016-09-27
申请人： Shenyang Neusoft Medical Systems Co., Ltd.
发明人： Nan Li , Guodong Liang , Yuqiu Zhao , Guocheng Wu , Jian Zhao
IPC分类号： G01N21/63 , G01T7/00
CPC分类号： G01N21/63 , G01T1/247 , G01T1/2928 , G01T7/00
摘要： An apparatus for recognizing a position of a crystal in a nuclear detector, including: a silicon semiconductor detector array arranged in a crystal array in the nuclear detector, where each row/or column of silicon semiconductor detectors is configured to output a sum of voltages outputted by the silicon semiconductor detectors in the row/or column at a row/or column signal output end; row signal comparing modules, one to one correspondingly connected to each row signal output end and configured to obtain a row comparison result for each row of silicon semiconductor detectors; column signal comparing modules, one to one correspondingly connected to each column signal output end and configured to obtain a column comparison result for each column of silicon semiconductor detectors; and a crystal position recognizing module configured to recognize a position of a crystal hit by a photon according to each row comparison result and each column comparison result.

56. 发明授权

US09684981B2 Method, apparatus, and storage medium for reconstructing cardiac image 有权
公开(公告)号：US09684981B2
公开(公告)日：2017-06-20
申请号：US14811820
申请日：2015-07-28
申请人： Shenyang Neusoft Medical Systems Co., Ltd.
发明人： Shanshan Lou , Han Zheng
IPC分类号： G06K9/00 , G06T11/00
CPC分类号： G06T11/005 , G06T2211/412
摘要： A method includes: collecting projection data and recording electrocardiogram data when computed tomographic scanning is performed on a patient, selecting, from the projection data and based on the electrocardiogram data, first projection data related to each cardiac pixel in a same phase, and reconstructing, based on the first projection data, an image of the related cardiac pixel, to obtain a cardiac image; determining, based on the electrocardiogram data, a reconstruction phase of each reconstruction pixel in a first reconstruction region, where the first reconstruction region is an image region selected along the patient's head-to-foot direction from the cardiac image; and selecting, based on the reconstruction phase of each reconstruction pixel and from the projection data, second projection data related to the reconstruction pixel in the reconstruction phase, and reconstructing, based on the second projection data, an image of the reconstruction pixel.

57. 发明授权

US09681845B2 Method and apparatus for scanning with lowered dose 有权
公开(公告)号：US09681845B2
公开(公告)日：2017-06-20
申请号：US14578485
申请日：2014-12-22
申请人： Shenyang Neusoft Medical Systems Co., Ltd.
发明人： Shanshan Lou , Lixia Tong
IPC分类号： A61B6/00 , A61B6/06 , A61B6/03
CPC分类号： A61B6/06 , A61B6/032 , A61B6/4078 , A61B6/484 , A61B6/542
摘要： A method and an apparatus for scanning with a lowered dose are provided. The method includes: determining a dynamic changing model of a prepatient collimator according to a rotation angle of a tube in a scanning mode; in a case that the scanning mode is a normal scan, controlling an opening angle of the prepatient collimator according to the dynamic changing model of the prepatient collimator at an initial stage and an end stage of the normal scan; and in a case that the scanning mode is a scan with phase control, controlling an opening angle of the prepatient collimator according to the dynamic changing model of the prepatient collimator at an initial stage and an end stage of a phase of the scan with phase control.

58. 发明申请

US20160183905A1 OPTIMIZING CT SCANNING PARAMETER 有权
标题翻译：优化CT扫描参数
公开(公告)号：US20160183905A1
公开(公告)日：2016-06-30
申请号：US14986556
申请日：2015-12-31
申请人： Shenyang Neusoft Medical Systems Co., Ltd.
发明人： Shanshan Lou , Dan Lv , Ling Pang , Changkun Liu
IPC分类号： A61B6/00 , A61B6/03
摘要： A method for optimizing CT scanning parameter is disclosed. A target group may be generated from a plurality of reference information samples. Each of the reference information samples may include subject information, information indicating a scanning protocol, one or more scanning parameter values and information indicating reconstructed image quality; the target group can consist of one or more reference information samples with the same subject information and the same scanning protocol. A scanning parameter optimization may be performed according to reconstructed image qualities and scanning parameter values of reference information samples in the target group, so as to acquire a target scanning parameter value of the target group. And according to the target scanning parameter value, a reference X-ray irradiation dose corresponding to the scanning protocol and the subject information of the target group may be determined.
摘要翻译：公开了一种优化CT扫描参数的方法。可以从多个参考信息样本生成目标组。每个参考信息样本可以包括主题信息，指示扫描协议的信息，一个或多个扫描参数值和指示重建图像质量的信息; 目标组可以由具有相同主题信息和相同扫描协议的一个或多个参考信息样本组成。可以根据目标组中的参考信息样本的重建图像质量和扫描参数值来执行扫描参数优化，以便获取目标组的目标扫描参数值。并且根据目标扫描参数值，可以确定与扫描协议相对应的参考X射线照射剂量和目标组的对象信息。

59. 发明授权

US09374880B2 Method and apparatus for modulating current in computed tomography imaging system 有权
标题翻译：用于在计算机断层摄影成像系统中调制电流的方法和装置
公开(公告)号：US09374880B2
公开(公告)日：2016-06-21
申请号：US14142956
申请日：2013-12-30
申请人： Shenyang Neusoft Medical Systems Co., Ltd.
发明人： Hongbo Wang
IPC分类号： H05G1/34 , H05G1/10 , A61B6/00 , H05G1/08 , H03C1/10 , H05G1/26
CPC分类号： H05G1/34 , A61B6/405 , A61B6/54 , G05B2219/33155 , G05B2219/36495 , G05B2219/41214 , G05B2219/42067 , H03C1/10 , H05G1/08 , H05G1/10 , H05G1/265
摘要： A method and apparatus of current modulation in a computed tomography imaging system are provided. The method may include: selecting a plurality of sample points from an expected current modulation curve as approach points; establishing an actual current modulation curve, wherein an actual current value of the actual current modulation curve at an approach point approximates an expected current value of an expected current modulation curve, and a variation rate of the actual current is within an allowed range of the computed tomography imaging system; and modulating a current in an X-ray tube of the computed tomography imaging system according to the actual current modulation curve. According to the disclosure, an image valuable to the diagnosis can be obtained with the smallest radiation dose.
摘要翻译：提供了一种计算机断层成像系统中的电流调制方法和装置。该方法可以包括：从预期的当前调制曲线中选择多个采样点作为接近点; 建立实际电流调制曲线，其中接近点处的实际电流调制曲线的实际电流值近似于预期电流调制曲线的预期电流值，并且实际电流的变化率在计算的层析成像系统; 并根据实际的电流调制曲线调制计算机断层摄影成像系统的X射线管中的电流。根据本公开，可以以最小的辐射剂量获得对诊断有价值的图像。

60. 发明授权

US09351700B2 Scanning method and device with reduced scanning dosage 有权
标题翻译：扫描方法和扫描剂量减少的装置
公开(公告)号：US09351700B2
公开(公告)日：2016-05-31
申请号：US14142951
申请日：2013-12-30
申请人： Shenyang Neusoft Medical Systems Co., Ltd.
发明人： Xinliang Li , Ling Pang , Shanshan Lou
IPC分类号： A61B6/03 , H05G1/32 , H05G1/40 , A61B6/00 , H05G1/38 , H05G1/46
CPC分类号： A61B6/583 , A61B6/032 , A61B6/405 , A61B6/482 , A61B6/486 , A61B6/503 , A61B6/5258 , A61B6/541 , A61B6/542 , A61B6/545 , H05G1/32 , H05G1/38 , H05G1/40 , H05G1/46
摘要： A scanning method and device are provided. The method includes: determining values for a first scanning dosage and a second scanning dosage used in a scanning process based on a trigger condition which varies regularly and attenuation fluctuations of an object to be scanned, wherein the first scanning dosage is higher than the second scanning dosage, and at least one of the first scanning dosage and the second scanning dosage has an inconstant value; and scanning a target position with the determined values. In the present disclosure, a scanning dosage may be reduced and different image noises may be kept consistent.
摘要翻译：提供扫描方法和装置。该方法包括：基于规则变化的触发条件和待扫描对象的衰减波动来确定扫描过程中使用的第一扫描剂量和第二扫描剂量的值，其中第一扫描剂量高于第二次扫描剂量，并且第一扫描剂量和第二扫描剂量中的至少一个具有不定值; 并用确定的值扫描目标位置。在本公开中，可以减少扫描剂量，并且可以保持不同的图像噪声一致。

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