Ko kubuda kwemazimbe kunogona kukupa kenza here? Mhinduro shoma ndeyekuti hongu. Maererano neDhipatimendi reUnited Health uye Human Services, kenza yekoloni yakakonzerwa nemitengo inenge 1 000 millisieverts (mSv). Kusuruvara kusvika pasi pe200 mSv kunogona kukonzera kukwepa kweukenza uye kenza yehutachiona, chifuva, uye mapapu. Uye kenza yeropa inogona kukonzerwa nekusvibisa kusvika pasi pe 100 mSv yemayeroti.
Basics
Saka, chii chaanenge ari "millisievert" uye unozvidzivirira sei kubva pakusunungura 100, 200, kana 1 000? A millisievert isayenzi chiyero chekuyera kwemazai emvura. Sezvo chikamu chakasiyana chemuviri chine zvidimbu zvakasiyana zvekunzwisiswa kune mazairo emvura, kusvibiswa kunowanzoratidzwa se "chiitiko chinoshanda." Semuenzaniso, ngatitaurirei Organ X uye Organ Y imwe neimwe inoratidzirwa kusvika 10 mSv yemayeroti. Zvisinei, Organ Y inowanikwa kaviri. Iyo chaiyo inogona kuva 10 mSv yega yega yega, asi iyo inoshanda inogona kuva 10 mSv yeAgun X uye 20 mSv yeAgree Y.
Mashoko Akaipa
Nhau dzakaipa ndeyekuti inenge 80 muzana yemasikirwo edu ekubuda kwemazuva anobva kune zvakasikwa, zvisingadziviriki. Ivhareji yeAmerica inogamuchira mizinga inosvika 3 mSv yemayiratiro gore negore kubva radhidon, matombo, kunze, nzvimbo, magetsi, uye ndege. (Usati wapikira ndege, ramba uri mupfungwa kuti unowana 1 mSv yekutsvaga kwemaawa ose emaawa makumi maviri ekupamba.)
Mashoko Akanaka
Nhau dzakanaka ndeyokuti zvinotora huwandu hwemhepo yakasvibiswa kusvika kune mazinga anokonzera kenza . Kana wakaziva nhamba, iwe unogona kudzivisa zvisina kufanira kuzviisa kune mamwe magetsi emirasi. Somuenzaniso, kana iwe uine hanya nehuwandu hwemhepo, iwe unogona kusarudza kuva necolonoscopy (pasina kujekesa kwemhepo) pane bhaumum enema (inenge mamiriyoni manomwe emasikirwo emhepo).
Maitiro anobudirira emagetsi anowanzobuda majekiseni anosanganisira zvinotevera:
- Ndege kufamba (0.005 mSv / awa)
- Barium enema (7 mSv)
- Chifukidzo che X-ray (0.10 mSv)
- CT kuongorora mimba (10 mSv)
- CT scan yechifukidzo (8 mSv)
- CT scan ye musoro (2 mSv)
- Dental X-ray (0.09 mSv)
- Mamamogram (0.7 mSv)
- X-ray yehenya (0.07 mSv)
- Whose-body CT scan (10 mSv)
Sources:
Nordenberg, Tamari. Mufananidzo wehutano: Ndezvipi zviri mukati mazvo zvinokonzera X-rays, dzimwe nzira dzekufananidzira. US Food and Drug Administration. Feb. 1999. 27 Aug. 2006 [http://www.fda.gov/fdac/features/1999/199_xray.html].
Radiation Exposure in X-ray Maminitsi. Radiology Info. 27 Aug. 2006 [http://www.radiologyinfo.org/en/safety/index.cfm?pg=sfty_xray].
Radiation Injury. Merck Manual Information Medical. 1 Feb. 2003. 27 Aug. 2006 [http://www.merck.com/mmhe/sec24/ch292/ch292a.html].
Bika pamusoro peCarcinogens, 11th Edition. Public Health Service. 27 Aug. 2006 [http://ntp-server.niehs.nih.gov/ntp/roc/toc11.html].
Ndezvipi njodzi dzinotyisa kubva kuC CT? Chikwata Chezvipimo uye Utano Hwehuwandu. 4 May 2005. 27 Aug. 2006 [http://www.fda.gov/cdrh/ct/risks.html].