Quiz 1 Flashcards
This is a CdCr view of an equine stifle. Which side corresponds to the medial aspect of the joint ? (ADD PIC)
A. A
B. B
A
Find an anatomical landmark:
In the horse the medial intercondylar eminence is always the prominent one.
Normally you cannot tell where medial and lateral is on the lateral view.
This is a D65PrPaDoblique (upright pedal) view of the equine foot. “1” correspond to… (Add pic)
A. =Proximal phalanx B. Navicular bone C. Central groove of frog D. Palmar process of distal phalanx E. Crena marginis solaris
E. Crena marginis solaris
This is a lateral. View of a. Canine joint. “1””” corresponds to… (Add pic)
A. Fibula B. Radius C. Ulna D. Tibia E. Femur
C. Ulna
The intrahepatic bilary ducts can be seen in the normal dog and cat on U.S.
- True
- False
False
Clean acoustic shadowing ?
Add pic
1. Detected
2. Not detected
- Detected
Note: Bright interface and distal to it is dark. A forge in body in skin would look exactly the same. (Glass, wood and plastic and normally not seen in a radiograph so US are better)
Radiography and CT imagining are both based on absorption of X-rays by the body.
True or False ?
True
An X-Ray is a type of electromagnetic radiation (also termed photons) that different based on their wavelength
True or False ?
True
Radio/TV waves; Microwaves; visible light and X-rays are all types of electromagnetic radiation. The only thing that makes them different is the wavelength.
Which are true properties of X-rays ? (Multiple answers)
A. No charge or mass B. Visible C. Cannot be felt D. Travel at speed of light E. Penetrate all matter to some degree F. Cause ionization (if energy is high enough) E. All the above
A, C, D, E, F
X-rays are NOT apart of the visible spectrum. They are invisible.
Ionization is:
A. A gain of an electron
B. A loss of an electron
C. A gain of an atom
D. A loss of an atom
B. A loss of an electron
Name 2 ways ionization in DNA can be dangerous
- Cell death (biological injury)
2. Mutation (Carcinogenesis) - Most worried about this one
An occupation ally exposed personnel (radiograph tech) can receive more than the general public
True or False
True
Occupational exposure is higher than the general public but it is still very low. Want to keep it as low as possible.
Also employer must be at least 18 years of age.
A pregnant worker can still receive some dose of radiation.
True or False
True
But they would just receive 10% less during gestation than the other workers receive
When reducing an individual’s dose in; how is/ should it properly be implemented in the practice ? (How is the exposure dose kept as low as possible) ?
(3 main ways)
- Time
- – Rotate personnel time in room
- – Avoid repeat examinations
- – Minimize patient holding (Ex. Sedation, sandbags, tape)
- Distance
- – The further away you are the less radiation you receive (reduces exposure significantly via inverse square law)
- Shielding
- – Use protective gear to protect yourself against scatter (Ex. Apron, thyroid shields, gloves, lead impregnated glasses)
The inverse square law indicates that the intensity of radiation decreases linearly with distance.
True or False ?
False
The dose decreases with the square of the distance from the source.
Very effective in reducing the dose so distance is a great factor in reducing dosage exposure.
Scatter enhances the image and decreases personnel dose
True or false
False
Scatter degrades he image and increases personnel dose
