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    • 5. 发明授权
    • Fetal anatomic sex assignment by ultrasonography during early pregnancy
    • 通过超声检查在怀孕早期进行胎儿解剖性别分配
    • US4986274A
    • 1991-01-22
    • US453123
    • 1989-12-04
    • John D. Stephens
    • John D. Stephens
    • A61B8/02A61B8/08A61B10/00
    • A61B8/02A61B10/00A61B8/0866
    • A method and apparatus are disclosed for fetal anatomic sex assignment by ultrasound during early pregnancy based on pattern recognition that allows identification of external genitalia during the gestational age range of 12 to 14 weeks. The pattern recognition derives from knowledge of the embryology of the developing external genitalia of the fetus and the relationship between embryologic events and recognizing patterns specific for male and female obtained by ultrasonic imaging. Fetal anatomic sex has been accurately diagnosed using high resolution digital linear-array real-time ultrasound in over 500 pregnancies that were scheduled for ultrasound except for detected cases of sex reversal, sex chromosome mosaicism, prior to genetic amniocentesis, and ambiguous sex chromosomes, except as noted, ultrasonic imaging of the penile or clitoral structure corresponded to later sex determination by karyotype. Imaging of the external genitalia can be included as part of a complete fetal anatomic survey, which includes gestational age dating and inspection for gross abnormalities. Sex assignment requires 30 seconds to 10 minutes. Fetal anatomic sex assignment can be performed by ultrasound early in pregnancy, that is, during the twelfth to fourteenth weeks from the last menstrual period of the mother, yet the results are as accurate as those obtained by chromosome analysis from genetic amniocentesis which can be safely performed only after the sixteenth week of pregnancy. Fetal anatomic sex assignment is particularly useful in genetic counseling with regard to X-linked disorders and can be clinically important when either sex reversal, sex chromosome mosaicism, or ambiguous sex chromosomes are detected by prenatal diagnosis. Other features are also disclosed.
    • 公开了一种方法和装置,用于基于模式识别的早期怀孕期间的超声胎儿解剖性别分配,其允许在12至14周的孕龄范围内鉴定外生殖器。 模式识别源自于胎儿发育外生殖器胚胎学知识,以及通过超声成像获得的男性和女性特异性识别胚胎事件与识别模式之间的关系。 在超过500例怀孕中,使用高分辨率数字线性阵列实时超声检查胎儿解剖性别已被准确诊断,除了检测到性别逆转,性染色体嵌合,遗传羊膜穿刺术之外的检测病例以及模糊性染色体外, 如上所述,阴茎或阴蒂结构的超声成像对应于核型的晚期性别决定。 外部生殖器的成像可以作为完整的胎儿解剖学调查的一部分包括,其中包括胎龄年龄和大体异常检查。 性别分配需要30秒到10分钟。 胎儿解剖性别分配可以通过妊娠早期,即从母亲的最后月经周期的第十二至第十四周进行超声检查,但结果与通过遗传羊膜穿刺术的染色体分析获得的结果一样准确,可以安全 仅在怀孕第16周后进行。 胎儿解剖性别分配在X联合障碍的遗传咨询中特别有用,并且当通过产前诊断检测到性别逆转,性染色体嵌合或模糊性染色体时,临床上可能具有重要意义。 还公开了其他特征。
    • 6. 发明授权
    • Method and apparatus for sensing and processing biopotentials
    • 用于感测和处理生物电位的方法和装置
    • US06351666B1
    • 2002-02-26
    • US09256294
    • 1999-02-24
    • Jack A. CuzickRichard J. DaviesJohn D. StephensVera BorgwardtCraig M. HousworthXingye LeiPeter D. GadsbyAbe Iskac
    • Jack A. CuzickRichard J. DaviesJohn D. StephensVera BorgwardtCraig M. HousworthXingye LeiPeter D. GadsbyAbe Iskac
    • A61B505
    • A61B5/04002A61B5/04A61B5/04282Y10S128/92Y10S128/925
    • In accordance with the apparatus and method of the present invention, a biopotential lesion sensor is placed directly over a lesion in a symptomatic breast and a reference sensor is located away from the symptomatic breast. A plurality of electropotential test measurements are taken during a test period with the lesion sensor and averaged to obtain a primary test potential. This primary test potential can be weighted to compensate for one or more biologic variables such as patient age, time in the patient menstrual cycle, and the time of day during which the measurement is taken. To provide noise enhancement of the primary test potential average measurement, the symptomatic breast is divided into four equal quadrants with one quadrant containing the lesion. One, two or all three of the remaining three non-lesion quadrants is provided with at least one non-lesion test sensor, and during the test period a number of electropotential measurements equal to those taken by the sensor over the lesion are taken and averaged. The processor may then obtain the median value of the averages for the non-lesion quadrants or alternatively the mean value, and it will then subtract this median or mean value from the primary test potential to provide the differential value.
    • 根据本发明的装置和方法,将生物电位病变传感器直接放置在有症状的乳房中的病变上,并且将参考传感器放置在远离有症状的乳房。 在与病变传感器的测试期间进行多次电位测试测量,并平均以获得主要测试电位。 该主要测试潜力可以被加权以补偿一个或多个生物学变量,例如患者年龄,患者月经周期中的时间和进行测量的时间。 为了提供主要测试电位平均测量的噪声增强,症状乳房被分为四个相等的象限,其中一个象限包含病变。 剩余的三个非病变象限中的一个,两个或全部三个被设置有至少一个非病变测试传感器,并且在测试期间,获取等于传感器对病变所采取的电位测量的多个电位测量并取平均值 。 然后,处理器可以获得非损伤象限的平均值的中值或可选的平均值,然后从主要测试电位中减去该中值或平均值以提供差分值。