PET Oncology

alkathryn's version from 2016-07-26 02:29


Question Answer
Body meanstumor imaging/oncology
PET can be used fordiagnosis, staging, restaging, and monitoring
Diagnosisto minimize the performance of invasive diagnostic procedures or to assist in determining the optimal anatomical location to perform an invasive procedure
PET is ____ done to diagnose diseaserarely
Stagingto determine the extent of disease, or spread from the site of origin. It is used to determine the type of treatment and patient progress
How many stages4
Staging can be described byTNM classification, Stage 1-4, Summary Staging
Restagingdetection of residual disease after completion of treatment, detection or assessment of recurrence
Monitoringdetermining tumor response to treatment
Monitoring is only covered ifchange in treatment is being contemplated and conventional imaging may be insufficient
T:extent of the primary cancer
N:presence of absence of lymph node involvement
M:presence of absnce of metastatic disease
Topogram AKAScout
F-18 Fluoride dose5-10 mCi
blood clearance for F-18 Na isfaster than MDP
Na F18 has lowprotein binding
Imaging for Na F18 starts early as30-45 minutes
Bone uptake for Na F18 depending onlocal blood flow and osteoblastic activity
Mechanism of uptake for Na F18diffusion through capillaries into bone extracellular fliuud
Na F18 formsfluoroapatite
Fluorithymidine can showquicker how effective cancer therapy is working
Fluorothymidine correlates to _________ rather thanDNA synthesis, glucose uptake
Fluorothymsidine rememberDNA synthesis
Fluorothymidine dose5-10 mCi
Stages of fluorothymsidinebaseline pre therapy, mid therapy, completion, 1 year after completion
SUV is ___ evaluation of metabolic activity of a lesionsemi-quantitative
Suspicious for malignancy SUV2.5rise in time
PET/CT changes management36%

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