Imaging in cancer Flashcards
1
Q
Imaging techniques used in staging cancer
A
Plain radiographs
Barium studies
CT
MRI
PET
2
Q
Conventional diagnostic techniques
A
endoscopy and biopsy
barium examination
3
Q
Barium studies use
A
Barium sulphate
4
Q
Barium sulphate
A
radio-opaque contrast used for outlining the GI tract
barium appears white on the radiograph
5
Q
High atomic (z) number of barium allows for…
A
barium to absorb more x-ray photons than the surrounding tissues
6
Q
CT contrasting agents
A
Oral - dilute iodine based contrast to outline the GI tract
intravenous - iodine based - injected into veins or vasculature of different tissues
7
Q
Diagnosis and staging
A
position of tumour
depth of penetration of tumour
relationship of tumour to adjacent structures
involvement of regional lymphnodes
presence of distant metastases
