Mock Exam Flashcards
(27 cards)
description of an electron.
A negatively charged particle that is very small when compared to a proton
Why do KV X-rays produce a clearer image than MV X-rays?
Because Photoelectric Absorption is proportional to Z3
Which of the following is the best description of characteristic radiation?
An incoming electron collides with an inner shell electron, giving it enough energy to leave the atom. A higher energy election replaces it emitting the excess energy as an X-ray.
A beams intensity is reduced as it passes through the body due to:
1.Attenuation prosesses
2.The inverse square law
1.Beam energy
2.Field size
1.The inverse square law
2.Build-up
1.The ion chamber
2.Absorption
1.Tissue-Maximum Ratios
2.Build-up
1.Attenuation prosesses
2.The inverse square law
Isobars are Atoms of different elements with the same number of?
Nucleons
The process of ___________ , is used to transfer heat from the rotating anode to the oil outside of the vacuum.
Convection
Conduction
Ionisation
Radiation
Friction
Radiation
How are electrons produced in a kV X-ray tube?
By raising the temperature of the anode
What does the “mA” do in an X-ray tube?
Creates electrons
Match the correct statements to the following scatter process, Pair Production.
Proportional to Z3
Not dependant on electron density
Proportional to 1KeV3
Not dependant on Z
Proportional to electron density
Proportional to 1KeV
Proportional to Z4
Not dependant on electron density
Proportionalto 2KeV3
Proportional to Z3
Proportional to electron density
Proportional to 1KeV
Proportional to Z
Not dependant on electron density
Only occurs at energies > 1.022MeV
Proportional to Z
Not dependant on electron density
Only occurs at energies > 1.022MeV
Definition for “A homogeneous beam”.
X-rays consists of photons that are all at the same energy.
What is this a description of? “The intensity of a radiation beam drops dramatically as distance away from it increases”.
Attenuation
Which of the following structures would you find superior to the prostate?
Neck of femur
Ischium
Rectum
Coccyx
Bladder
Bladder
What structure is found posterior to the trachea?
Oesophagus
Hilum
Carina
Hypopharynx
Larynx
Oesophagus
Which statement about the anatomical planes of the body is correct?
The coronal plane/laser divides the body into equal left and right halves
The coronal plane/laser divides the body into upper (cranial) and lower (caudal) parts
The coronal plane/laser divides the body into lateral and medial parts
The coronal plane/laser divides the body into equal/unequal front (anterior) and back (posterior) parts.
The coronal plane/laser divides the body into unequal left and right halves
The coronal plane/laser divides the body into equal/unequal front (anterior) and back (posterior) parts.
Oxygen-deficient blood leaves the heart via which structure?
Pulmonary arteries
How many vertebrae are classed as “thoracic”?
12
Which 3 bones make up the sternum?
Manubrium, body, xiphoid process
Which part of the brain is connected to the pituitary gland?
Hypothalamus
What glands of the head and neck are described below?
These paired salivary glands are located beneath the floor of the mouth.
The submandibular salivary glands
What would you find inferior to the female urinary bladder?
Uterus
Which one of the following statements is true?
The pulmonary veins carry well-oxygenated blood from the lungs to the heart
The pulmonary arteries carry deoxygenated blood to the heart
The pulmonary arteries carry well-oxygenated blood to the lungs
The pulmonary veins carry well-oxygenated blood from the heart to the lungs
The pulmonary arteries carry well-oxygenated blood to the heart
The pulmonary veins carry well-oxygenated blood from the lungs to the heart
What is the “cisterna chyli”?
A reservoir of lymph fluid
The spleen is a structure related to the lymphatic system and is located..
In the hypogastric region
In the right iliac region
In the left hypochondriac region
In the right hypochondriac region
In the thoracic cavity
In the left hypochondriac region
Which of these “sinuses” is NOT found inside a bone?
Ethmoid sinus
Pyriform sinus
Maxillary sinus
Frontal sinus
Sphenoid sinus
Pyriform sinus
