回声

It focuses on Normalized Least Mean Square algorithm and the recently proposed method by Christof Faller et al which uses a simplified echo path Model based on a frequency-domain coloration effect filter.

根据在MATLAB环境中用于消除回声和分析日常的文书工作，它着重于回声过滤器和一个简化的回声路径模型Christof Faller。

RESULTS: In normal entheses, there was a little lower but equal resonance, in which there was clear funicular fibrin resonance but without blood signal. Most entheses had a little higher membrane resonance, which was clearly divided from entourage. The surface of attaching bone was smooth and continuous.

结果：正常肌腱/韧带附着点表现为均匀的稍低回声，内见清晰的条索状纤维回声；多数见包膜回声稍高，与周围分界清楚，其内无血流信号，附着点骨面光滑连续。

The intensity level of ultrasound echo which reflect the fibrosis severity of pancreatic parenchyma and local atˉtenuated ultrasound echo with no-clearly border in pancreatic parenchyma is presentation of pancreatic tumor.

胰腺结石诊断不难，胰腺实质回声增强的强度反映纤维化的程度，在实质回声增强的胰腺中出现回声减弱并有模糊边界是胰腺肿瘤的表现。

Results: IVUS revealed that the cross-section views of coronary artery IMH appeared as a homogeneous, hyperechoic, crescent-shaped or circular area within media or between media or EEM, and the long axis views of IMH presented unbent or tortuous homogeneous space-occupying lesions with varied length.

结果：IVUS显示不冠状动脉壁内血肿的短轴观呈新月形或环形，呈等于或稍强于血液的斑点状回声，长轴观显示为中膜内或中膜与外膜之间长度不等的占位，形态或直或扭曲，呈接近血液回声或稍强回声。

Results: 43 cystic renal occupying lesions were found in 37 patients, According to ultrasound diagnostic criteria, l3 were hypoechogenic, l7 were isoechongnic and l3 were hyperechogenic. Category of these lesions under CT examination was based on the Bosniak system. 26 lesions of class Ⅱwere found in 24 patients, 12 lesions of class Ⅲin 8 patients and 5 lesions of class Ⅳ in 5 patients . Open operation was done on 18 cases including 4 cases of renal carcinoma.

结果：37例复杂性囊性肾脏，发现肾脏占位病变43个。B超以低回声为主病变13个，等回声病变为主17个，高回声病变为主13个；CT诊断Ⅱ类囊性病变24例（26个），Ⅲ类囊性病变8例（12个病变），Ⅳ类囊性病变5例（5个病变）；手术18例，其中4例为肾脏恶性肿瘤。

I have eight weeks of pregnancy, B-Uterus anterior, palace wall echo uniform, intrauterine pregnancy 45 24mm see echoes, see inside a human fetus in its echo, brachiocephalic length 20mm, see heart throb.

我怀孕有8周了，B超子宫前位，宫壁回声均匀，宫腔内见45 24mm妊娠回声，其内见一初具人形胎儿回声，头臂长约20mm，见胎心搏动。

ResultsOne example was misdiagnosed,and the ultrasound diagnosis coincidence rate was 94.1%.The basic acoustic image characteristics of retroperitoneal abscess was:fluid or mixing masseslocated in the retroperitoneal space,with the shapes of round,ellipse or fusiform,echoless or mix echo in it,and light-spot,laminated echo and facula was seen.

结果：本组误诊1例，超声诊断符合率为94.1%，腹膜后脓肿基本声像图特征为：位于腹膜后间隙的液性或混合性包块，呈圆形、椭圆形或梭形，内为无回声或混合回声，并见光点、片状回声及光斑。

Results One example was misdiagnosed, and the ultrasound diagnosis coincidence rate was 94.1%. The basic acoustic image characteristics of retroperitoneal abscess was: fluid or mixing masseslocated in the retroperitoneal space, with the shapes of round, ellipse or fusi-form, echoless or mix echo in it, and light-spot, laminated echo and facula was seen.

结果：本组误诊1例，超声诊断符合率为94.1%，腹膜后脓肿基本声像图特征为：位于腹膜后间隙的液性或混合性包块，呈圆形、椭圆形或梭形，内为无回声或混合回声，并见光点、片状回声及光斑。

The 52 cases (57.78%)were with type of uterine tube clumps, and the feature of acoustic image showed clump echo were irregularity boundary, internal echo were uneven, gestational sac were not clear and there were a little or a few of fluidify when tubal pregnancys were ruptured.

输卵管妊囊型27例(30.00%)，表现为较完整胎囊强回声光环，部分见胚芽；输卵管包块型52例(57.78%)，表现为边界不规则的包块回声，内部回声不均匀，胎囊显示不清楚；输卵管妊娠破裂出血时盆腔可见少或中量积液等。

Both lesions were described as well defined; one was reported as oal, homogeneous and isoechoic, whereas the other was described as lobulated, with mixed areas of isoechogenicity and hypoechogenicity.

病变的边界都很明确，一为椭圆形，呈均质的等回声，而另一个为分叶状的等回声和强回声混合区。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐