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Protocolli TC e Risparmio Dose
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Topic starter
28/03/2022 6:57 pm
Fatevene una ragione:
Nelle angio TC coi bassi KV si risparmia MDC e quello che c'è si vede meglio.
Prendete questo grafico tratto da:
"Intravenous Contrast Medium Administration and Scan Timing at CT: Considerations and Approaches", Supplemental material: http://radiology.rsna.org/lookup /suppl/doi:10.1148/radiol.10090908/-/DC1
Dal testo: "Graph shows the relationship between iodine concentration and CT enhancement at three voltage settings. For a given voltage, the proportionality of contrast enhancement to iodine concentration is near constant. An increase in concentration by 1 mg of iodine per milliliter yields contrast enhancement of
41.12 HU at 80 kVp,
31.74 HU at 100 kVp,
and 26.18 HU at 120 kVp.
Thus, use of lower voltage results in stronger contrast enhancement per iodine concentration."