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Umbilical cord
anatomy
Student name:
Ofir Agranat
Department:
Medical Engineering
Advisor name:
Dr. Sara Naftali
Dynamic Simulator for Umbilical Flow Assessment
Using Doppler Ultrasound
2015
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1
1. Introduction
The objective of the project is to design and
build a prototype of a simulator that mimics
pulsatile blood flow in an umbilical cord model
in its natural fluid environment and will imitate
variety of umbilical
cord blood flow
pathologies. The apparatus will be located at
Simultech - Medical Simulation Center in Meir
medical center, directed by Professor Tepper,
and will be used to practice by ultrasound
interns.
2. Objective
3. Requirements & Assumptions
During ultrasound (US) internship, an
intern needs to practice to diagnose a
variety of pathologies during monitoring
the umbilical cord blood flow, using an
ultrasound Doppler. However, some of
those situations are rare, and may not
occur during internship.
•
The tube model mimics an umbilical cord in
its natural fluid environment
•
A pulsatile flow with physiological healthy and
pathologies values
•
System with GUI controlled
•
Reduced ultrasonic artifacts
•
High resemblance to a real pulse wave
•
Laminar flow
•
Fully developed velocity profile
ܴ݁ ൌ ܳ
s
ܦ
߭ s
ܣ
u K
ܴ݁
– Reynolds number
ܳ
– Effective flow
ܦ
– Hydraulic diameter
߭
– Kinematic viscosity
ܣ
– Cross section
ܮ
u + s
ܦ
ൌ + ݉ ൏
ܮ
ൌ ݉
ܮ
– Entry length
ܮ
– Tube length
Biometric fetal ultrasound training phantom
As a part of a routine examination of an embryo, an extensive
evaluation of the umbilical cord (UC) anatomy and physiology
is required in order to detect fetal distress.
Umbilical cord Doppler
spectrography