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Imaging modalities - Coggle Diagram
Imaging modalities
X-ray/CT
principles
ionising radiation
tissue attenuation
applications
trauma
fractures
stroke
cancer staging
advantages
fast
widely available
limitations
radiation exposure
pregnancy concerns
ultrasound
principles
high-frequency sound waves
applications
obstrectics
abdomen
vascular imaging
advantages
real-time imaging
portable
no-radiation
cheap
limitations
operator dependent
reduced quality in obesity/gas
MRI
principles
magnetic fields/radiofrequency
non-ionising
applications
brain
MSK
soft tissue
advantages
excellent soft tissue detail
no radiation
limitations
long scan times
claustrophobia
contraindications (pacemakers/metal)
nuclear medicine
principles
radiopharmaceuticals
functional imaging
applications
PET/SPECT
cancer
advantages
detects disease early
physiological information
limitations
radiation dose
expensive
limited specificity
introduction
medical imaging visualises internal body structures
plays major role in diagnosis and monitoring
includes ionising and non-ionising techniques
conclusion
different modalities suited to different clinical indications
choice depends on risk-benefit balance and diagnostic need
evaluation
compare
sensitivity
specificity
speed
radiation risk
cost
accessibility