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Dental Application of CBCT in Implant planning.

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Dental Application of CBCT in Implant planning.

高雄長庚醫院牙科

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mA

KVP Density

Contrast

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Exposure to radiation causes damage

to living tissue, resulting in skin burns,

radiation sickness and death at high

doses and cancer, tumors and genetic

damage at low doses.

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有必要才照

照出有診斷價值的影像 穿鉛衣

環境及人員安全

Photons, all energies : Q = 1 Electrons and muons, all energies : Q = 1 Neutrons,

energy < 10 keV : Q = 5 10 keV < energy < 100 keV : Q = 10 100 keV < energy < 2 MeV : Q = 20 2 MeV < energy < 20 MeV : Q = 10 energy > 20 MeV : Q = 5 Protons, energy > 2 MeV : Q = 5 Alpha particles and other atomic nuclei : Q = 20

Gonads: N = 0.2

Bone marrow, colon, lung, breast, stomach: N = 0.12 Bladder, brain, salivary glands, kidney, liver, muscles,

oesophagus, pancreas, small intestine, spleen, thyroid, uterus: N = 0.05 Bone surface, skin: N = 0.01

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稍微曝光不足的數位照 片可由軟體調整到令人滿意 的結果。

而曝光過度的數位照片 卻會喪失亮部細節,永遠無 法調整到令人滿意的結果。

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