This paper observed epithelial cells and blastocyst growth and development and made a comparative research on the effect of ultrasound on the cells from these two different tissues.At the same time,it was also to observe whether the application of the therapeutical dosage of ultrasound on revealed that after the exposure of the mouse uterus to the ultrasonic wave of an internsity of 12W/cm2 ×90s on the 4th day of gestation,the in vitro cultured blastocyst displayed the death rate of 81.93%,while the cultured endometrial epithelial cells showed in normal growth,and on significant difference was found between the experimental and the sham-irradiation groups in the DNA histochemieal test of the endometrial cells conducted on the 3rd day of culture.The application of same dosage(12W/cm2X90s)of ultrasound on mouse uterus on the 4th day of pseudopregnancy was proved to have no effect on future gestation.Such result indicates that embryos are more sensitive to ultrasonic irradiation than endometrial epithelial cells of uterus and that the application of within the special range of the therapeutical dosage of ultrasound on mouse uterus of pseudopregnancy has no effect on futuregestation.

With the method of endoscopic ultrasonography (EUS) and Color scale ultrasound, 156 patients with stomach and gallbladder diseases were examined, The features revealed by the EUS and color scale ultrasound for these diseases were compared with the pathological changes. The findings were that:the mean color quantity scale of benign gastric ulcer was higher than that of gastric cancer(p<0.01).The gallbladder stone was two color quantity scales higher than did polypoid lesions of gallbtadder(p<0.01).The color scale ultrasound can improve the clear degree of lesion pictures.The correct rates of diagnosis were no significant differences between color scale ultrasound and grev scale ultrasound.

The macroscopy and ultrasondgraphy analysis for thirty reseeted specimens of esophageal carcinoma proved by pathology was reported in this paper.The ultrasonic features of esophageal carcinoma as follows:the local wails became thicker,their layers were unclear or disap-peared,the normal walls were insteaded of irregular masses with hypoechoic patterns, the borders of the masses were definite or indefinite,and the posterior echoes of the masses had little change.In addi-tion,the depth of tumor invasion Was compared by the ultrasonography and pathology.The ultrasonic features of the esophageal walls without tumor were also described.

Hydatidosis is the largest parasific disase in human being. The patients often contract hydatidosis in the childhood. The slow growth of hydatid cysts in the organ involved may lead to a protracted course of disease. In the early stage of the diseases, there are no distinct subjecive symptoms. Early diagnosis is difficult by routine examination. The complications of hydatidosis causing serious damage to the organs may often lead to sudden death. It is essential to make an early and correct diagnosis and give treatment. B-mode ultrasonography not only detects the location, dimension and chracteristics of hydatid cysts but also shows the pathological changes of the various complications caused by hydatidosis and faciliates to select the best program of operation. B-mode ulttasonography is the method of choice in the diagnosis of hydatidosis. In this series of 931 patients with hepatic hydatid disease, the diagnostic accuracy rate of B-mode ultrasonography reached 98. 8%.

The sonography of malignant lynmhoma in 96 patients since 1983 was reported.The patients were all examined by ultrasound with posifive findings and the diagnoses were proved pathologically by operations and/or biopsy.The incidence,clinical significance and sonographic nlanifestations of the lymphoma in different locations were discussed with review of literatures.The study shows that sonography plays very important role in discovering the location and extension of the lesions,helping to classify the clinical stage,drawing up the program of treatment following up the effects of tlle therapy and so on.

The reseclability of 45 cases with pancreato-ampullar diseases was evaluated preoperatively with color Doppler flow imaging(CDFI).In 43,the situation was confirmed by surgery and pathology with obvious involvement of the peripancreatic vessels and/or liver metastases as the criteria for nonresectability. 22 patients considered to be not resectable on the basis of CDFl were proved at surgerY.While in 21 patients without sign of obvious involvement of peripancreatic vessels on CDFI,the resectability rate was 85.7%.The overall correlation rate of CDFl was 93%.It is concluded that CDFI plays a definite role in evaluating the resectability of panereato-ampullar disease.The positive signs of vessel involvement are discussed.

The hemodynamic examination of prostate was performed transperineally by HP SONOS 1000 or 2500 Ultrasound System with 7.5 MHz transducer.The results of 25 healthy persons showed that:1.In transverse section,two arteries locatced at 5 and 7 o'clock corresponded to the capsule branches of prostate artery with diameter(D)1.7±0.25mm,Vnlax 22.2±8.2cm/s,flow volume(V) 8.O±6.5ml/min;2.The sagittal view showed the urethra branch of prostate artery,red in colonr,D 1.8±0.2mm,Vmax 25.6±10.2cm/s,V 9.5±3.69mI/min.3.Blue streams with lOW velocity were seen near the internal orifice of urethra,were vesicoprostatic venous plexus with D 3.5±1.0mm,their velocity varied with respiration.In presence of prostatic hypertrophy,the velocity and flow volume were less than those in normal case.

Objective To investigate the diagnostic parameters,criteria and diagnostic value of pelvic floor ultrasound in female stress urinary incontinence(SUI).Methods Simple factor logistic regression analysis was used to compare the difference of ultrasonic parameters between SUI patients(260 cases) and asymptomatic subjects(60 cases) to find the relevant diagnostic indexes,and to evaluate the diagnostic criteria and diagnostic value by the ROC curve.Results There were significant differences in urethral inclination angle and levator hiatus area in resting and bladder neck position,bladder position,urethral inclination angle,retrovesical angle,levator hiatus area in Valsalva state and urethral rotation angle,bladder neck mobility between the two groups (all P ＜ 0.05).There was no significant difference in age,BMI,bladder neck position,bladder position,retrovesical angle between resting in the two groups (all P ＞0.05).Using the ROC curve analysis,the cut-off points of urethral inclination angle and levator hiatus area in resting,bladder neck and bladder position,urethral inclination angle,retrovesical angle,levator hiatus area in Valsalva,bladder neck mobility and urethra rotation angle to diagnose SUI were 16.5°,13.5 cm2,3.5 mm,0.5 mm,29.5°,139.5°,19.5 cm2,24.5 mm,45.5°,respectively.The sensitivity/specificity were 54.6％/66.7％,49.2％/80.0％,68.1％/95.0％,64.2％/98.3％,67.3％/93.3％,73.5％/50.0％,68.8％/81.7％,70.0％/95.0％,67.2％/85.0％,respectively.The area under the curve were 0.625,0.668,0.855,0.854,0.817,0.622,0.811,0.866,0.817,respectively.Conclusions Pelvic floor ultrasound is a better way to diagnose stress urinary incontinence,and it provides an objective basis for the diagnosis of SUI.

Objective To retrospectively study the quantitative features and diagnostic value of 3-dimensional shear wave elastography (3D-SWE) in breast lesions.Methods A total of 198 consecutive women with 198 breast lesions (125 malignant,73 benign) were included,who underwent conventional ultrasound (US) and 3D-SWE before surgical excision.Quantitative parameters of transverse planes,sagittal planes and coronal planes were calculated,including maximum elasticity (Emax-w),mean elasticity (Emean-w),standard deviation (Esd) of the whole lesion and ratio between the stiffest elasticity (Emean-s)in the lesion and the fatty tissue (Eratio).Area under ROC curve(AUC) for combination of quantitative parameters and US were calculated.Results The AUC,sensitivity and specificity for US were 0.919,88.0％ and 78.1 ％,respectively.In the total 198 lesions,Emax-w,Emean-w,Esd,Eratio and Emean s were significantly lower in coronal planes than those in transverse and sagittal planes (all P ＜0.001).AUC for combination of each quantitative parameter and US were significantly higher than those of US (all P ＜0.05),except Emean-w of transverse plane,while there was no significant difference among the three orthogonal plane (P＞0.05).Sensitivity significantly increased by combining US with Emean-s,Eratio (transverse,sagittal and coronal planes),Emean-w (coronal and sagittal planes) or Esd (coronal and transverse planes) (all P＜0.05).Combination of US and Emean w of coronal plane yielded significantly higher sensitivity than those of transverse and sagittal planes.Conclusions Combination of quantitative features of 3D-SWE and US can significantly increase diagnostic accuracy and sensitivity in breast lesions.Emean-w of coronal plane yields the highest sensitivity.

Objective To investigate the feasibility and clinical value of medical history and clinical manifestation-based protocol(MHCMP) for the diagnosis of spontaneous coronary artery dissection(SCAD)using intravascular ultrasound (IVUS).Methods Based on the MHCMP designed in our centre,intraoperative sequential analysis was performed in patients with acute coronary syndrom and clinical tip of SCAD,SCAD and its classification were defined according to the result of IVUS.Results Of the 37 patients admitted with ACS at the Cardiology Service,29 patients had SCAD as the cause(78.4 ％).All the patients underwent coronary angiography and IVUS,of which 9 patiens were type I (24.3 ％),15 patients were type Ⅱ (40.5％) and 5 patients were type Ⅲ (13.5％).The left anterior descending artery was the most frequently affected (16 patients),followed by the the right coronary artery (7 patients),while 5 patients had dissection of the circumflex artery and 1 patient had dissection of the left main coronary artery.Type I (evident arterial wall stain):this was the pathognomonic angiographic appearance of SCAD with contrast dye staining of the arterial wall with multiple radiolucent lumens.Type Ⅱ (diffuse stenosis of varying severity):this angiographic appearance was not well appreciated and was often missed or misdiagnosed.SCAD commonly involved the mid to distal segments of coronary arteries,and could be so extensive that it reached the distal tip.There was an appreciable (often subtle) abrupt change in arterial caliber,with demarcation from normal diameter to diffuse narrowing.This diffuse and usually smooth narrowing could vary in severity from inconspicuous mild stenosis to complete occlusion.Type Ⅲ (mimic atherosclerosis):this appearance was the most challenging to differentiate from atherosclerosis and most likely to be misdiagnosed,while IVUS was helpful for the differential diagnosis.Conclusions MHCMP is able to screen out all kinds of SCAD and guide the treatment decisions making.