Explain how the following factors affect the blood velocity and volume flow rate as well as potential risks for stroke: i. the pulsatile nature of blood flow, ii. elasticity of the wall of the blood vessels, and iii. gradual narrowing and curvature of blood vessels.

Biomedical Instrumentation Systems
1st Edition
ISBN:9781133478294
Author:Chatterjee
Publisher:Chatterjee
Chapter5: Biomedical Electronics: Digital
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Explain how the following factors affect the blood velocity and volume flow rate as well as potential risks for stroke: i. the pulsatile nature of blood flow, ii. elasticity of the wall of the blood vessels, and iii. gradual narrowing and curvature of blood vessels.

1. X-ray Angiography and Blood Flow Measurement
X-ray flat panel detector
3 Captures X-rays passing through
the patient's body
X-ray tube assembly
2 Limits the X-ray beams to
the appropriate area
X-ray flat panel detector
1 Emits X-rays from
the X-ray tube
4 Processes the detected data into
an image with reduced noise
-X-ray
EXECIK
6
e kujte te toe te
GA
5 Displays the image on
the monitor in real time
An important step in the diagnosis and treatment of vessel disease is the qualitative
assessment and quantitative measurement of blood flow through the diseased vessels and
surrounding areas. In X-ray angiography, standard x-ray images are acquired of the region of
interest following injection of an opaque contrast agent, which enters the bloodstream and permits
an accurate visual depiction of blood flow through vessels. Using X-ray angiography, blood flow
can be approximately measured by employing kinematics to describe the movement of contrast
dye along a linear portion of the vessel.
Transcribed Image Text:1. X-ray Angiography and Blood Flow Measurement X-ray flat panel detector 3 Captures X-rays passing through the patient's body X-ray tube assembly 2 Limits the X-ray beams to the appropriate area X-ray flat panel detector 1 Emits X-rays from the X-ray tube 4 Processes the detected data into an image with reduced noise -X-ray EXECIK 6 e kujte te toe te GA 5 Displays the image on the monitor in real time An important step in the diagnosis and treatment of vessel disease is the qualitative assessment and quantitative measurement of blood flow through the diseased vessels and surrounding areas. In X-ray angiography, standard x-ray images are acquired of the region of interest following injection of an opaque contrast agent, which enters the bloodstream and permits an accurate visual depiction of blood flow through vessels. Using X-ray angiography, blood flow can be approximately measured by employing kinematics to describe the movement of contrast dye along a linear portion of the vessel.
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