《最新妇产科疾病的超声诊断ppt课件.ppt》由会员分享，可在线阅读，更多相关《最新妇产科疾病的超声诊断ppt课件.ppt（81页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、妇产科疾病的超声诊断妇产科疾病的超声诊断2011Sangreal-uterusTHE DAWINCI CODEUterine PositionlMidline anteversion:most common;degree of anteversion is bladder distention dependentlRight or left:normal variant in absence of pelvic masseslRetroverted:entire organ displaced posteriorlylRetroflexed:body displaced with respec
2、t to cervixUltrasonography of normal uteruslUterine serosa layer:Linear high-echo;clear,smooth;l Myometrium:Homogeneous middle-echo;lEndometria:The middle line of high echo,around the weak echo.It is well known that the endometrium changes dynamically in response to cyclic hormonal flux.Uterine sero
3、sa layer Myometrium Endometria Normal uterusNormal uterustransabdominal ultrasonographytransabdominal ultrasonographyTransvaginal sagittal view of the uterus.The Transvaginal sagittal view of the uterus.The rounded fundus is shown toward the left of the rounded fundus is shown toward the left of the
4、 image with the endometrial stripe rumming through image with the endometrial stripe rumming through the middle of the uterine cavity.the middle of the uterine cavity.MyometriumEndometriaUterine serosa layerFallopian Tube（输卵管）lInfundibulum:funnel-shaped lateral tube that projects beyond the broad li
5、gament to overlie the ovarieslAmpulla:sidest part of the tube where fertilization occurslIsthmus:hardest part;lies just lateral to the uteruslLength:12 cm;supplied by ovarion arteries and veinsOvary（卵 巢）l Almond shapedlAttached to back of the broad ligament by mesovarium;sometimes called suspensory
6、ligament of the ovarylLies in ovarian fossalFossa is bounded by external iliac vessels,ureter,and obturator nervelReceives blood from ovarian arterylBlood drained by ovarian vein into inferior vena cava on right;on left by ovarian vein into lert renal veinSonography of the normal ovarylAn ovoid homo
7、geneous echodensity;follicular cysts are often present.lThe best sonographic marker for the ovary is identification of a follicular cyst,which has the classic appearance of being thin walled and anechoic with through-transmission posteriorly.Transabdominal sagittal image shows the Transabdominal sag
8、ittal image shows the left ovary posterior to the urinary bladderleft ovary posterior to the urinary bladderTransvaginal sagittal image of the ovaryTransvaginal sagittal image of the ovaryovarian follicleFollicular wall flowCommon Diseases of Obstetrics and GynecologyGynecology：Leiomyoma；Carcinoma;；
9、Ovarian Tumors;Inflammatory mass;etc.Obstetrics：NaturalNatural pregnancy；Abnormal pregnancy;etc.TheuterusLeiomyoma/HysteromyomaCharacteristicsofLeiomyomaslMost common pelvic tumorlSmooth muscle cell compositionlFibrosis occurs after atrophic of degenerative changeslDegeneration occurs when fibroids
10、outstrip their blood supply;calcificationlMay be pedunculatedlClinical:enlarged uterus,profuse and prolonged bleeding,painUterineLocationsofleiomyomasSubmucosal Erode into endomertial cavity heavy bleeding;infertilityIntramuralMay enlarge to cause pressure on adjacent organs;infertilitySubserosalMay
11、 enlarge to cause pressure on adjacent organs Subserous myomaBroad ligamentmyomaCervical myomaintramurous myomaSubmucous myomaUltrasonicperformancelTwo-dimensional：Increased uterine body or Form disorders；Spherical hypoechoic area in the uterine body，Rear echo attenuation；With calcification or Cysti
12、c change,etc；Signs of oppression；lColor Doppler：Tumor around with the blood flow signal in the shape of ring or semi-circular ring；lDoppler spectrum：Medium resistance index，RI 0.60.1。intramurous myomaSubserous myomaintramurous myomaSubserous myomaCervical myomaAbundant tumor blood flowAbundant tumor
13、 blood flowMUTUTRI 0.61Submucous myoma with calcificationTeratoma DermoidTummors（卵巢良性囊性畸胎瘤/皮样囊肿)lPathology：derives from germ cell，the most common ovarian neoplasm,constituting 20%of ovarian tumors.up to 20%are bilateral.About 80%occur in women of childbearing age.lSize ranges from small to 40 cmlUnl
14、iateral,round to oval masslContains faty,sebaceous material,hair,cartilage,bone,teethlClinical:asymptomatic to abdominal pain,enlargement and pressure;pedunculated,subject to torsionlSonography:Cystic/complex/solid mass,echogenic components;acoustic shadowingSpecialUltrasoundFindings:1.A cystic mass
15、:with an echogenic mural nodule2.A paste sign：particulate liptinite3.A fluff of hair sign4.A fat-fluid level sign：with fluid level in the cyst,fat above,fluid below.5.A complex masscystic teratoma cystic teratoma of ovaryof ovaryA cystic massPaste signFluff of hair signPaste signFat-fluid level sign
16、A complex massA 8 years old girl,cutting off a three kilograms benign teratomaThe role of Ultrasound in ObstetricsTRIMESTERSlFirst trimester =0 to 12 weeks of gestationlSecond trimester =13 to 26 weeks of gestationlThird trimester =27 to 42 weeks of getsationlPostterm pregnancy=42 weeks of gestation
17、Indications for First-Trimester SonographylConfirm presence of intrauterine pregnancylEvaluate for suspected ectopic pregnancylDefine cause of vaginal bleedinglDetermine gestational agelConfirm suspected multiple gestationslAid in invasive procedureslEvaluate pelvic masseslDetect uterine abnormaliti
18、esNatural pregnancyNatural pregnancyNonagepregnancy(First-Trimester)Definition：Pregnancy before 12 weekend.5 weeks pregnant Gestational sac；6-7 weeks pregnant Germ;7-8 Weeks Primitive heart tube pulse；8-11 weeks Yolk sac;9 weeks Embryonic,placenta.The Normal First TrimesterSonographic Features of a
19、Normal Gestational SaclShape:round of ovallPosition:fundal or middle portion of uterus;a center position relative to endometriumlContour:smoothlWall:echogenic;3 mm of more in thicknesslInternal landmarks:yalk sac present when gestational sac is larger than 10 mm;embryo present when gestational sac i
20、s larger than 18 mmlGrowth:1 mm per day(range:0.7 mm to 1.5 mm per day)4-5 weeks pregnant4-5 weeks pregnant In the g In the gestational sac we can see a estational sac we can see a embryo point,the earliest embryo.embryo point,the earliest embryo.7 weeks pregnant7 weeks pregnant Fetus was about 4 mm
21、Fetus was about 4 mm，we can see we can see apparent heart throb,and sapparent heart throb,and small limb bud.mall limb bud.8 weeks pregnant8 weeks pregnant Three-dimensional ultrasound show its beginning Three-dimensional ultrasound show its beginning of the shape of a humanof the shape of a human.U
22、mbilical bordEmbryonic headEmbryonic abdomenYolk sacEmbronic headAmniotic sac9 weeks pregnant9 weeks pregnant Known as a fetalKnown as a fetal，Development of the Development of the various parts of the fetus,tends to improvevarious parts of the fetus,tends to improve.12 weeks pregnant12 weeks pregna
23、ntThe spine is identifiable,as the two bead-like high The spine is identifiable,as the two bead-like high echo.Ears,limbs,bones can be shown and echo.Ears,limbs,bones can be shown and measurement.measurement.Ultrasound of the Second and Third TrimestersIndications for Second-and Third-Trimesterl Est
24、imate gestational age for patients with uncertain dateslEvaluate uterine size and clinical date discrepancieslEvaluate fetal growthlEstimate fetal weightlDetermine fetal presentationlEvaluate fetal lifel provide adjunct to amniocentesis,percutaneous umbilical blood sampling procedure,or cerclage pla
25、cementlEvaluate uterine abnormalitylEvaluate abnoumal maternal serum alpha-fetoprotein valueslEvaluate abnormal amniotic fluidlEvaluate placenta Etc.The Second-and Third-Trimester(Metaphase and terminal prengancy)Metaphase and terminal prengancy)Mid-Mid-pregnancy:pregnancy:13-27 13-27 weeks pregnanc
26、y.weeks pregnancy.Late-Late-pregnancy:pregnancy:More More than 28 weeks of than 28 weeks of pregnancypregnancy.Scanning TechniqueslSurvey uterus lObserve cardiac activitylDetermine position and number of the fetus and placentalAssess amniotic fluidlLook for uterine of placental masses and fetal anom
27、aliesCheck contentsl1、Fetal head：BPD biparietal diameter;l2、Fetal abdomen:AC abdomen circumference;l3、Fetal limb：FL femur length;l4、Others：Placenta,Fetal heart rate,Amniotic fluid,etc.1、Fetal headMeasuring the Biparietal Diameter(BPD)lObitain biparietal diameter of the fetal head at the transverse l
28、evel of the midbrain:falx,cavum septi pellucidi,and thalamic nucleilMake sure the head is symmetric and ovallMeasure from outer to inner margins of the skulllIn the third trimester,the BPD is not as accurate in predicting fetal age Fetal head,after 12 weekend Fetal head,after 12 weekend pregnantpreg
29、nant Fetal side profile,we Fetal side profile,we can observe its forehead,can observe its forehead,nose,lip,and chin,etc.nose,lip,and chin,etc.2、FetalabdomenlThe hepatobiliary system:liver,port venous systerm,hepatic veins and arteries,gallbladder,and bile ductslThe gastrointestinal system:the esoph
30、agus,stomach,small and large intestines(colon)lThe urinary system:kidneys,adrenal glands,ureters,bladder.The fetal abdomen circumference（AC)is the most widely measured Measuring the Abdominal Circumference(AC)lThe AC should be taken from a round transverse image with the umbilical portion of the lef
31、t portal vein midline within the liverlThe outer margin of the abdominal wall should be measuredlThe abdominal wall measurement is the least accurateThefetalliverThefetallivergallbladderstomachport venousspinegallbladderstomach3、FetallimbslThe upper limbs:the ulna the radius the humeruslThe lower li
32、mbs:the femur/the thigh bone the fibula the tibia lThe femur is the most widely measured long bone（FL femur length ）Femur measurementlHyperechonic linear structure represents the ossified portion of the femoual diaphysis and corresponds to femoral length measurement from the greater trochanter to th
33、e femoral condyleslThe mormal femur has a straight laeral border and a curved medial borderlFemur length may be used with the same accuracy as BPD to predict gestational agelFemur length may indicate skeletal dysplasias or intrauterine growth restrictionLong section of the upper limbsThe radiusThe u
34、lnaThe humerus Femur/thigh boneFibula/perone Tibia/shin bone Longsectionofthe lowerlimbs 4、The placenta（胎盘）lThe major fole of the placenta is to permit the exchange of oxygenated maternal blood(rich in oxgen and nutrients)with deoxygenated fetal blood.lThe thickness of the placenta varies with gesta
35、tional age,with a minimum diameter of 15 mm in fetuses greater than 23 weeks.The size of the placenta rarely exceeds 50 mm in the normal fetus.Anterior placenta at 21 weeks of gastationThe placentaUmbilical bordAmniotic fluidThe fetal posterior placenta at 29 weeks of gestationcalcification Anterior
36、 placenta at 39 weeks of gastationAnterior placenta at 39 weeks of gastationCalm little faceCalm little faceEating toe Eating toe Eating fingersEating fingersCryingCryingPouttingPouttingFetal with umbilical Fetal with umbilical cord around the neckcord around the neckFetal with cleft lipFetal with cleft lipsmailingsmailing结束语结束语谢谢大家聆听！谢谢大家聆听！81