Cov raj xa duab X-ray cathode uas tig tau (Rotating Anode X-Ray Tube) yog cov raj xa duab X-ray uas muaj qhov tseeb siab rau kev thaij duab kho mob thiab kev lag luam. Raws li nws lub npe qhia, nws muaj cov cathode uas tig tau thiab yog ib qho ntawm cov khoom tseem ceeb ntawm cov khoom siv X-ray.
Ib lub raj xa hluav taws xob cathode uas tig tau muaj ib lub cathode, ib lub anode, ib lub rotor thiab ib lub stator. Lub cathode yog ib lub pas hlau uas tso tawm cov electrons thermoelectrically, thiab lub anode nyob rau sab nraud ntawm nws thiab tig ib ncig ntawm nws. Lub anode yog ua los ntawm cov khoom siv thermal conductivity siab thiab muaj cov dej channel rau txias. Lub anode feem ntau yog ua los ntawm cov hlau refractory xws li tungsten, molybdenum, lossis platinum, uas tiv taus cua sov thiab kev puas tsuaj los ntawm cov hluav taws xob X-rays siab.
Thaum lub teeb hluav taws xob ntaus rau ntawm qhov chaw ntawm cathode, cov hluav taws xob raug cua sov thiab tso tawm. Cov hluav taws xob no raug nrawm mus rau qhov anode, qhov chaw uas lawv raug qeeb thiab tawg, tsim cov hluav taws xob X-ray siab. Lub anode tig sib npaug faib cov cua sov tsim tawm mus rau tag nrho qhov chaw anode, thiab txias nws los ntawm cov dej channel kom ntseeg tau tias muaj kev ruaj khov thiab kev ntseeg tau ntawm kev siv mus sij hawm ntev.
Cov raj xa duab X-ray cathode uas tig tau muaj ntau yam zoo, suav nrog lub zog siab, lub zog X-ray siab, tam sim no tsom mus rau siab, qhov sib piv ntawm lub teeb liab thiab lub suab nrov siab, muaj peev xwm hloov kho tau raws li ntau yam kev xav tau ntawm kev thaij duab, thiab lub neej ua haujlwm ntev. Yog li ntawd, nws yog qhov chaw xaiv X-ray hauv cov teb xws li kev thaij duab kho mob, kev kuaj pom qhov tsis zoo ntawm CT hauv kev lag luam, thiab kev kuaj tsis ua puas tsuaj.
Hauv kev xaus lus, lub raj xa duab cathode X-ray uas tig tau yog lub zog siab, ruaj khov thiab txhim khu kev qha uas muab cov duab X-ray raug, zoo thiab daws teeb meem siab rau ntau hom kev siv duab sib txawv.
Lub sijhawm tshaj tawm: Plaub Hlis-06-2023