Video: DLP hauv CT scan yog dab tsi?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Dose ntev khoom ( DLP ) ntsuas hauv mGy*cm yog ntsuas ntawm CT raj hluav taws xob tso tawm/raug. Nws muaj feem xyuam rau CTDIvol, mas CTDIvol sawv cev rau koob tshuaj los ntawm ib daim ntawm ib qho phantom tsim nyog. DLP suav txog qhov ntev ntawm cov hluav taws xob tso tawm raws lub z axis (qhov ntev ntawm tus neeg mob).
Ua kom pom qhov no, CTDI hauv CT scan yog dab tsi?
Cov xam tomography koob tshuaj ( CTDI ) yog ib qho kev siv hluav taws xob feem ntau pom hauv X-ray xam tomography ( CT ), thawj txhais nyob rau hauv 1981. Lub CTDI thiab koob tshuaj absorbed yuav txawv los ntawm ntau tshaj ib qho ntawm ob rau cov neeg mob me xws li menyuam yaus.
Ib yam nkaus, koj xam DLP li cas? Tej Yam Yuav Tsum Nco Tag nrho lub zog tso tseg yog cov khoom siv ntev. DLP = CTDI * scan length. Cov DLP tuaj yeem hloov mus rau hauv kev kwv yees ntawm cov koob tshuaj zoo, uas sawv cev rau qhov kev pheej hmoo nruab nrab rau cov teebmeem hluav taws xob stochastic (piv txwv li mob qog noj ntshav).
Xav txog qhov no, DLP ntsuas hauv CT li cas?
Hauv CT , tag nrho tus nqi hluav taws xob tshwm sim ntawm tus neeg mob, hu ua DLP , yog cov khoom lag luam ntawm CTDIvol thiab scan ntev (hauv centimeters) thiab yog ntsuas nyob rau hauv milligray-centimeter.
Muaj pes tsawg mGy yog CT scan?
Cov txiaj ntsig: Rau cov neeg laus, qhov nruab nrab CTDIvol yog 50 mkx (IQR, 37–62 mGy) rau lub taub hau, 12 mGy (IQR, 7-17 mGy) rau hauv siab, thiab 12 mGy (IQR, 8-17 mGy) rau lub plab.
Pom zoo:
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