I-CT ukuskena ukuthola isifo se-artery coronary
Sibutsetelo
E-coronary artery disease (CAD), isifo sokuqina kwesifo sofuba senza ukuthi ububanzi obushelelekile, obunwetshiwe bomugqa we- coronary lube lukhuni, lukhuni futhi luvuvuke ngenxa ye " amacwecwe ," okuyi-deposit of calcium, amafutha namangqamuzana angavamile okuvuvukala. Phakathi kwezinye izinto, lokhu kusho ukuthi uma unayo i-calcium emithanjeni yakho ye-coronary, une okungenani i-CAD.
Sekuyiminyaka eminingi odokotela bebazi ukuthi ezinye izibalo ze-tomography (CT) eziyinkimbinkimbi ezitholakala kalula zingathola futhi zilinganise amakhemikhali e- coronary artery calcium. (Amagama anikezwe izinhlobo ezahlukene ze-CT scan scans angase adideke, kodwa noma iyiphi i-CT scan esetshenziselwa ukukala i-coronary artery calcium ngokuvamile ibizwa ngokuthi "i-calcium scan.")
Ukuhlolwa Kwenziwe kanjani
Ukuba nezinkomba ze-calcium kufana nokuba ne-x-ray. Uzolala etafuleni le-x-ray, izintambo zizoxhunyaniswa esifubeni sakho ukuze zirekhode i-ECG kanye netafula lizobe lishintsha kwi-scanner. Uzocelwa ukuba ubambe umoya wakho ngomzuzu noma ngaphezulu, ukuze isithombe esicacile singatholakala. Isifanekiso somsakazo we-x-ray esizovela sizohlolwa nge-telltale "izindawo ezimhlophe" ezibonisa ukuthi i-calcium ibeka imali emithanjeni ye-coronary, futhi inani le-calcium lizobe lilinganiselwe ibe amaphuzu.
Ukuhumusha I-Calcium Score
Inani le-calcium ekhona emithanjeni ye-coronary ilandelwe ngokwezinga le-Agatson, kanje:
- 0 - ayikho isifo esikwaziyo
- 1 kuya ku-99 - izifo ezincane
- 100 kuya ku-399 - isifo esilinganiselwe
- 400 noma ngaphezulu - isifo esibi
Ukusetshenziswa
Kube nokuphikisana okuningi mayelana nokuthi ubani okufanele abe ne-calcium scans nokuthi indlela okufanele isetshenziswe ngayo. Ukuphikisana kwavela kakhulu ngenxa yokuthi, ekuqaleni, odokotela bavame ukusebenzisa lezi ziko ukuhlola iziguli ze-CAD ezivimbelayo; okungukuthi, ukuvimbela okuyingxenye emithanjeni ye-coronary okungase kudingeke ukuthi iphathwe yi- stenting .
Kodwa-ke, kuvela ukuthi ukuhlolwa kwe-calcium akuyona into enhle kakhulu kule njongo. Iziguli eziningi ezinezici eziphakeme ze-calcium azinawo ama-blockages abalulekile - naphezu kokuba ne-CAD enkulu. Ngokushesha, ukuhlolwa kwe-calcium kwaholela iziguli eziningi ukuba zibe ne-catheterizations yenhliziyo engadingekile, futhi uma i-catheterizations ingabonisi ukuvinjelwa okuphawulekayo, izilinganiso ze-calcium (okungalungile) zacatshangwa ukuthi "zingamanga amanga."
Namuhla, odokotela bayaqaphela ukuthi inzuzo enkulu ye-calcium scans ayikuthola izindawo ezithile zokuvimbela, kepha kunalokho ukukhomba ukuthi ngabe isiguli sinalo yini i-CAD noma, uma kunjalo, ukulinganisa ubunzima bayo. Lolu lwazi lungasiza kakhulu ekunqumeni ukuthi ulaka luba kanjani ekuphishekeleni ukuguqulwa kwezinto eziyingozi.
Izingozi
Ingozi kuphela engokoqobo yokuskena kwe-calcium ukuvezwa kwemisebe, eyenzeka nganoma yikuphi ukuhlolwa kwe-x-ray. Inani lemishanguzo umuntu ayithola nge-calcium scan lihluka kancane kuye ngokuthi imishini esetshenzisiwe, futhi ngaphambi kokuba uvumelane novivinyo, kufanele ubuze lebhu ukuthi uzothola kangakanani ukukhanya kwe-radiation kuleyo ndawo. Inani elilinganiselwe lemisebe ne-calcium scan kuyinto 2 kuya 3 mSv (millisievert), okulingana nezinyanga eziyi-8 kuya kwezingu-12 zemisebe yemvelo.
Abafundi
Ukusetshenziswa kwe- calcium kuhloswe ikakhulukazi kuncike ezingeni lakho leengozi ye-CAD. Ungakwazi ukulinganisa kalula izinga lakho lokufaka ingozi (ezigabeni eziphansi, eziphakathi noma eziphezulu) ngokuphendula imibuzo embalwa elula. Ukulinganisa ingozi yakho yesifo senhliziyo, hamba lapha .
Abantu abasigaba sengozi esincane banamathuba aphansi okuba scan enhle okwamanje anconywa ukuthi abanalo ukuskena kwe-calcium.
Abantu abasigaba esengozini enkulu banamathuba aphezulu kakhulu okuba ne-calcium enhle engatholakali ngokwenza ukuskena.
Bangabantu abasigaba esiyingcipheko esingabaphakathi abangakwazi ukuzuza ekuhloleni kwe-calcium.
Laba bantu ngokuvamile babonakala bephilile, ngaphandle kwezinto ezimbili noma ezintathu eziyingozi ezingase zibe "umngcele" ongavamile. Ukunquma ukuthi uhlanganyele ekushintsheni okunamandla kokuphila noma ukuthatha iziqu noma i-aspirin prophylactically kungaba nzima kubantu abanjalo. Lapha, ukuskena kwe-calcium kungasiza kakhulu. Uma izinga le-calcium lilinganisela noma liphakeme, i-CAD esebenzayo isivele ikhona futhi laba bantu kufanele bazibheke njengengozi ephezulu (hhayi ephakathi) yokuhlaselwa kwenhliziyo . Kumele kuthathwe izinyathelo ezinyantisayo zokuguqulwa kwezinto ezinobungozi, ngokuvamile zifaka i-statins ne-aspirin. Ngakolunye uhlangothi, uma amaphuzu we-calcium ephansi, kungenzeka ukuthi i-CAD encane noma engekho ikhona futhi ikhona ingozi eguquguqukayo yokuguqula isimo (njengokuthuthukisa indlela yokuphila) kuyoba nengqondo. Funda lapha ukuze uthole ukwaziswa okwengeziwe ekulawuleni izifo zesifo senhliziyo .
Okubalulekile, njengokungathi kunoma yikuphi ukuhlolwa, ukuthi uma imiphumela yesikrini se-calcium ingasiza ekuqondiseni ukwelashwa kwakho noma ukuziphatha kwakho, khona-ke umqondo omuhle wokucabangela ukuba nalolu vavanyo. Uma kungenjalo, yidlulise.
Imithombo:
U-Agatston AS, uJanowitz WR, uHildner FJ, et al. I-quantification ye-coronary artery calcium esebenzisa i-ultrafast computed tomography. J Am Coll Cardiol 1990 Mar 15; 15 (4): 827-32
IGreenland, P, Bonow, RO, Brundage, BH, et al. I-ACCF / AHA 2007 isazi sempilo esivumelwaneni sezokwelapha emayelana ne-coronary artery calcium amagoli ngokuhlolwa kwe-tomography ekuhloleni kwenhlekelele yomhlaba jikelele nasekuhloleni iziguli ezinezinhlungu zesifuba: umbiko we-American College of Cardiology Foundation Clinical Expert Consensus Task Force (IKomiti Yokubhala ye-ACCF / AHA) Ukuvuselela Umbhalo Wokubonisana Wama-2000 we-Electron Beam Computed Tomography) owenziwe ngokubambisana neNhlangano Ye-Atherosclerosis Imaging and Prevention kanye neNhlangano Yezinhliziyo Ze-Cardiovascular Computed Tomography. J Am Coll Cardiol 2007; 49: 378.
I-Radiology Exposure ku-X-ray Iziviwo. I-Radiologyinfo.com (i-American College of Radiology neRadioological Society yaseNyakatho Melika.