16 good questions and answers: "General Medicine - Intro + digestive system"
- 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)
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
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
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)
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
Which of the following is NOT a major type of medical imaging?
a. MRI
b. Radiography
c. Nuclear medicine
d. Radioactive medicine
a. MRi
b. Ultrasound
c. Plain X-rays
d. CT
e. PET
a. Iodizing radiation
b. Magnets
c. Sound
d. Electricity
a. Radiography
b. Nuclear medicine
c. Ultrasound
d. MRI scanner
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