1 / 35

IN THE NAME OF GOD

IN THE NAME OF GOD. 3 RD TRIMESTER SONOGRAPHY. Historical Ultrasound. 1876 : 1st used dog 1880 discovery of piezoelectric effect 1940 Ultrasonic energy was 1st applied in human body for medical purpose. 1954 Medical application of ultrasound. How to work Ultrasound ?. Air 331 m/s

delora
Download Presentation

IN THE NAME OF GOD

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. IN THE NAME OF GOD 3RD TRIMESTER SONOGRAPHY

  2. Historical Ultrasound • 1876 : 1st used dog • 1880 discovery of piezoelectric effect • 1940 Ultrasonic energy was 1st applied in human body for medical purpose. • 1954 Medical application of ultrasound.

  3. How to work Ultrasound ? • Air 331 m/s • Water 1340 m/s • Soft tissue 1450 m/s • Bone 1540 m/s

  4. How to work Ultrasound ? • Tranceducer • According to wavelength and speed and density tissue reflect to oscillator • Display to monitor • A-Mode, B-Mode , M-Mode • 2 D , 3D ,4D

  5. Safety Ultrasound • Ti:up to 1 degree Celsius • Tis: Soft tissue • TiC: Cranium • TiB: Bone • Routine 2D may be safe • 3D & 4D unsafe or hasard

  6. Routine prenatal sonography as a screening tool • CDC reported 67% routine sonography • Support the use of ultrasound when there is a specific medical indication • ACOG • AIUM • ACR • RCOG

  7. Using ultrasound in OBs • Confirm date of delivery ( EDC) • Diagnosis of abnormal pregnancy EP , Blighted ovum(1st Trimester) • Anomaly • Reduced diagnose of IUGR(RGF) ,Postdatisem Prevent abuse tocolytic (date )

  8. 3rd Trimester • Abnormal Placenta Location • IUGR(RGF) • Maturity :osification proximal femur 32 distal tibia ,humerus 35 w • BPD,FL,HC,AC,CI (2-3 w error ) • Amniotic fluid volum • BPP,MBPP, Cervical lenght

  9. 3rd TrimesterMultiple Markers • HC,FL equal to PD,FL,AC,HC • HC/AC • BPD/FL • FL/AC • Others: interaorbital,clavicle length Foot length….etc.

  10. Ponderal Index • = birth weight(gr) x 100 crown-heel length(cm)

  11. nasal bone Ossification

  12. Head Circumference HD

  13. Femoral Length FL

  14. CRL

  15. AC

  16. ”در عشق همیشه قطره ای جنون هست و در جنون هم همیشه قطره ای عقل“ (فردریک نیچه) “Always there is a drop of madness in love, yet always there is a drop of reason in madness” (F. Nietzshe)

More Related