Cov txheej txheem:
Video: Hounsfield txhais li cas?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Txhais /Taw qhia
Cov Hounsfield chav tsev (HU) yog qhov txheeb ze qhov ntsuas ntawm xov tooj cua ntom ntom siv los ntawm cov kws kho hluav taws xob hauv kev txhais cov duab tom tom (CT). Kev nqus/txo qis coefficient ntawm hluav taws xob hauv cov ntaub so ntswg tau siv thaum tsim kho CT los tsim cov duab grayscale.
Yooj yim li ntawd, Hounsfield chav nyob hauv CT scan yog dab tsi?
Hounsfield chav nyob (HU) yog qhov tsis muaj qhov dav chav tsev universal siv nyob rau hauv xam tomography ( CT ) scanning kom nthuav tawm CT tus lej hauv tus qauv uas yooj yim thiab yooj yim. Hounsfield chav nyob yog tau los ntawm kev hloov pauv hloov pauv ntawm qhov ntsuas qhov ntsuas qhov coefficients 1.
Qhov thib ob, chav Hounsfield loj npaum li cas? Raug Hounsfield tsev (HU) qhov tseem ceeb yog −20 txog −150 HU rau cov nqaij mos adipose thiab 20 txog 50 HU rau lub raum. Yog tias cov qog adrenal tsawg dua 0 HU ntawm CT uas tsis ua kom zoo, nws yuav luag yog qhov mob qog noj ntshav.
Hais txog qhov no, tus lej Hounsfield hauv CT scan yog dab tsi?
nzˌfiːld/, npe tom qab Sir Godfrey Hounsfield , yog qhov ntsuas ntau los piav qhia txog kev siv hluav taws xob. Nws nquag siv hauv CT kuaj , qhov twg nws tus nqi kuj tseem hais txog CT naj npawb.
Hounsfield units suav li cas?
Hounsfield Unit formula:
- HU = Hounsfield Unit.
- μ = linear attenuation coefficient.
- X = cov ntaub so ntswg.
Pom zoo:
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