General Medicine - Intro + digestive system
16 important questions on General Medicine - Intro + digestive system
How did the British Medial Journal describe health?
Facts about the GP practice:
- The GP is part of primary care
- About 75% of all registered patients visits the GP at least once a year
- GP's should ask their patient about ICE (Ideas, Concerns, Expectations)
Explain the diagnostic process, 3 steps:
- Higher grades + faster learning
- Never study anything twice
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Imaging technique:
Radiography (X-rays, CT-scans)
- Most common form of medical imaging (X-rays)
- Uses electromagnetic
(ionizing) radiation
- Structures that absorb the high energy beams will appear in white: bones and prosthetics (dense structures and high atomic number)
- Relatively inexpensive
- CT-scan = computes tomography: several high-resolution cross-sectional images are taken to create a more 3D view of the body parts (position and shape) -> tumours, blood clots, infections
Imaging technique:
MRI (magnetic resonance imaging)
- This technology uses magnets and radiowaves to produce an image of the soft tissues of the body: tumours, organ damage
- No radiation (less risk than CT-scan)
- High-resolution images
- Ba
sed on movement of protons in the body
Imaging technique:
Nuclear Medicine (e.g. PET-scans)
- Uses radioactive tracers (isotopes) bonded to a carrier molecule (e.g. Modified glucose)
- Administration: intravenous, oral, inhalation
- Produces 3D image through detection of photons
- Can v
iew all types of tissues
- Usually for digestive or circulatory system, also for lungs (e.g. Pulmonary embolism)
Imaging technique:
Ultrasound (echography)
- High frequency sound waves
- Does not use radiation: safe!
- Hard tissues (white) and soft tissues (grey) can be viewe
d using an ultrasound machine: diagnose diseases, monitor a fetus during fetal development, viewing blood flow through the body, and viewing the heart
- Can capture movement (live images)
- Small portable machines
Quiz:
Which of the following is NOT a major type of medical imaging?
a. MRI
b. Radiography
c. Nuclear medicine
d. Radioactive medicine
Which of these is better for imaging compact bone?
a. MRi
b. Ultrasound
c. Plain X-rays
d. CT
e. PET
Bony structures appear ... On an ultrasound image:
Ultrasound is safe for use in pregnancy because it does not use...
a. Iodizing radiation
b. Magnets
c. Sound
d. Electricity
Which of the following types of medical imaging would make the most sense for taking a quick, rough look at an internal organ like the liver?
a. Radiography
b. Nuclear medicine
c. Ultrasound
d. MRI scanner
If you want to detect biochemical changes in an organ before anatomical changes occur, you'd best be advised to use...
Which of the following types of medical imaging would be a good choice for creating a detailed image of the brain?
Hollow structures or fluid cavities appear ... On an ultrasound image.
What is medical imaging?
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