1836769
Descrição
Quiz por Corey Briffa, atualizado more than 1 year ago
|
Criado por Corey Briffa
mais de 9 anos atrás
|
|
Questão 1
Questão
What type of radiation occurs when using ultrasonography?
Responda
-
Mechanical
-
Gamma
-
Beta
-
Ultraviolet
-
Sound
Questão 2
Questão
What are the two types of waves that ultrasonography detects?
Responda
-
Compression
-
Shear
-
Supression
-
Tension
-
Short wavelength
Questão 3
Questão
What is the region of frequency for ultrasonography?
Responda
-
1-20MHz
-
100-250MHz
-
1000-2500MHz
Questão 4
Questão
What is absorption? (Ultrasonography)
Responda
-
When the US energy is converted into heat
-
When US energy is unable to be detect
-
When the US energy reaches a point and bounces back to the detector
Questão 5
Questão
What factors can cause the amplitude to be reduced during an ultrasound? (Three answers)
Responda
-
Tissue Properties
-
Frequency
-
Distance travelled
-
Strength of the wavelength
Questão 6
Questão
Is this the correct definition for refraction?
When some or all energy is diverted from its original path
Responda
- True
- False
Questão 7
Questão
Is this the correct definition for diffraction?
Divergence of a beam from sound source
Responda
- True
- False
Questão 8
Questão
Is this the correct definition of Scatter?
Some energy is reflected from a boundary
Responda
- True
- False
Questão 9
Questão
Explain attenuation....
Responda
-
The loss of power or amplitude of the ultrasound signal as it passes through tissue
-
The ability for the ultrasound to 'attenuate' a low signal, thus making it more detectable
-
Attenuation = absorption + scatter + reflection
-
This is the term given to the adaptation of the signal as it finds the target tissue.
Questão 10
Questão
Tick all the different types of ultrasound scans
Responda
-
Continuous * pulsed wave
-
Pulse-Echo principles (A-scan)
-
B-Mode image
-
Transmit focussing
-
Focused
-
Simple
-
Z-mode
Questão 11
Questão
Is this the correct definition for the Doppler effect?
The difference between the transmitted frequency (Ft) and the received frequency (Fr)
Responda
- True
- False
Questão 12
Questão
Is it true that colour Dopplers show the difference between arteries and veins?
Responda
- True
- False
Questão 13
Questão
Which of these are relevant to Power Doppler, but not Colour Doppler?
Responda
-
Angle independent
-
Better Boundary detection
-
Detect Blood flow
-
Image noise in random flashes of colour
Questão 14
Questão
Choose the benefits of using ultrasound...
Responda
-
Real-time Guidance
-
Non-ionising radiation
-
Speed
-
Portable
Questão 15
Questão
What is the correct equation for blood pressure?
Responda
-
Cardiac output x Total peripheral resistance
-
Cardiac output x aortic pressure
-
Heart rate x Stroke volume
Questão 16
Questão
Tick the different layers of a blood vessel
Responda
-
Tunica Media
-
Tunica intima
-
Tunia Adventitia
-
Tunica medium
-
Tunica interna
Questão 17
Questão
Is it true or false that perivascular nerves are found on the outside of the tunica adventitia?
Responda
- True
- False
Questão 18
Questão
Is this statement true?
When vascular smooth muscle relaxes vessel diameter decreases
Responda
- True
- False
Questão 19
Questão
What vessels are key in controlling resistance for circulation?
Responda
-
Small arteries & arterioles
-
large arteries & arteriole
-
Veins
-
Venules
Questão 20
Questão
Define; Isometric tension recording
Responda
-
Measuring tension generated by the vascular wall with diameter of the vessel constantly changing.
-
Measuring tension generated by the vascular wall with diameter of the vessel remaining constant
Questão 21
Questão
Would isometric tension recording occur, in vitro or in vivo?
Responda
-
In vitro
-
in vivo
Questão 22
Questão
Is this statement true?
Wire myography requires dissection skills and is better used for small vessels with an internal diameter of 100-400 micrometers.
Responda
- True
- False
Questão 23
Questão
What do changes in tension of a blood vessel indicate?
Responda
-
Vasodilation
-
Vasoconstriction
Questão 24
Questão
Is this statement true?
Nitric Oxide is a signalling molecule in the cardiovascular system
Responda
- True
- False
Questão 25
Questão
Pick from the list below, the disadvantages of the cardiovascular techniques studied;
Responda
-
Difficulty in studying long term changes
-
Cannot measure flow-induced relaxation
-
Freshly prepared vessels can be viable for hours
Questão 26
Questão
What does a stretch in smooth muscle cause?
Responda
-
Causes muscle contraction
-
Causes a tear in the endothelial cells
-
Causes muscle relaxation
-
Causes a complex molecular signalling pathway that causing a release of further signalling substances
Questão 27
Questão
Is this statement true?
Shear stress has frictional force on the endothelium leading to vasoconstriction
Responda
- True
- False
Questão 28
Questão
What causes the impairment in the sheer stress mechanism to cause vasoconstriction?
Responda
-
Cardiovascular disease
-
Ageing
-
Atherosclerosis
-
Renal impairment
Quer criar seus próprios Quizzes gratuitos com a GoConqr? Saiba mais.