CT scan

computed tomography
medical test type (en) da medical imaging (en)
Bayanai
Ƙaramin ɓangare na	medical imaging (en) da tomography (en)
Gajeren suna	CT da КТ
Uses (en)	X-ray (en) da CT scanner (en)
ICD-9-CM (en)	88.38

A computed tomography scan (CT scan), wanda aka fi sani da shi a cikin wani yanayi mafi rudimentary kamar computed axial tomography scan, shi ne wani likita imaging fasahar da aka yi amfani da ita don samun cikakken ciki hotuna na jiki. Ma'aikatan da ke yin CT scans ana kiransu radiographers ko radiology technologists.

CT scanners suna amfani da bututun X-ray mai juyawa da jere na masu ganowa da aka sanya a cikin gantry don auna X-ray attenuations ta ƙwayoyi daban-daban a cikin jiki. Ana sarrafa ma'aunin X-ray da yawa da aka ɗauka daga kusurwoyi daban-daban a kan kwamfuta ta amfani da algorithms na tomographic_reconstruction" id="mwLA" rel="mw:WikiLink" title="Tomographic reconstruction">Sake fasalin tomographic (cross-sectional) hotuna (virtual "slices") na jiki. Ana iya amfani da CT scans a cikin marasa lafiya tare da kayan aiki na ƙarfe ko masu saurin motsa jiki, waɗanda aka hana su hotunan magnetic resonance (MRI).

1977 Labaran Dutch game da CT scan

Tun lokacin da aka ci gaba a cikin shekarun 1970s, binciken CT ya tabbatar da cewa fasaha ce ta hoto. Duk da yake ana amfani da CT sosai a cikin binciken likita, ana iya amfani da shi don samar da hotuna na abubuwan da ba su da rai. An ba da kyautar Nobel ta 1979 a fannin ilimin lissafi ko magani tare ga injiniyan lantarki na Burtaniya Godfrey Hounsfield da masanin kimiyyar Afirka ta Kudu Allan MacLeod Cormack "don ci gaban tomography mai taimako na kwamfuta".

Nau'o'in

Dangane da samun hoto da hanyoyin, ana samun nau'ikan na'urori daban-daban a kasuwa.

Tsarin CT

Sequential CT, wanda aka fi sani da mataki-da-harbe CT, wani nau'in hanyar bincike ne wanda teburin CT ke motsawa. Tebur yana karuwa zuwa wani wuri sannan ya tsaya, sannan ya biyo bayan juyawa na bututun X-ray da kuma samun yanki. Bayan haka, teburin ya sake karuwa, kuma an ɗauki wani yanki. Motsi na tebur yana tsayawa yayin ɗaukar yanka, wanda ke haifar da karuwar lokacin bincike.

Tsarin CT

CT scan na kirji. Yankin axial (dama) shine hoton da ya dace da ɓangaren 2/33 a kan radiograph. (hagu)

Spinning tube, wanda aka fi sani da spiral CT, ko helical CT, wata dabara ce ta hoto wacce aka juya dukkan bututun X-ray a kusa da tsakiyar tsakiyar yankin da ake bincika. Waɗannan su ne manyan nau'ikan na'urori a kasuwa saboda an ƙera su da tsawo kuma suna ba da ƙarancin farashi na samarwa da siye. Babban iyakancewar wannan nau'in CT shine girman da inertiya na kayan aiki (taron bututun X-ray da kuma jerin masu ganowa a gefen da'irar) wanda ke iyakance saurin da kayan aikin zasu iya juyawa. Wasu kayayyaki suna amfani da tushen X-ray guda biyu da jerin masu ganowa da aka rage ta hanyar kusurwa, a matsayin dabara don inganta ƙudurin lokaci.[1][2]

Electron beam tomography

Electron beam tomography (EBT) wani takamaiman nau'i ne na CT wanda aka gina babban bututun X-ray don kawai hanyar electrons, da ke tafiya tsakanin cathode da anode na bututun X, ana juyawa ta amfani da maɓallin karkatarwa. Wannan nau'in yana da babban fa'ida tunda saurin saurin zai iya zama da sauri, yana ba da damar yin hoto mai sauƙi na tsarin motsi, kamar zuciya da jijiyoyi. An samar da ƙananan scanner na wannan ƙirar idan aka kwatanta da nau'ikan bututun juyawa, galibi saboda tsadar da ta fi dacewa da gina bututun X-ray da tsararren mai ganowa da iyakantaccen ɗaukar jikin mutum.