Ubwino wa mtunda wa chowunikira chotalikirapo mu X-ray CT system

X-ray computed tomography (CT) yasintha kwambiri kujambula kwachipatala, ndikupereka zithunzi zatsatanetsatane za thupi la munthu. Chapakati pa mphamvu ya X-ray CT machitidwe lagona X-ray chubu, amene amapanga X-ray zofunika kujambula. Kupita patsogolo kwaukadaulo kwaposachedwa kwabweretsa ma variable focus distance detectors (VFDDs) m'makina a X-ray CT, kupititsa patsogolo luso la zithunzi ndi luso lozindikira. Nkhaniyi ikufotokoza ubwino wa VFDD mu X-ray CT machitidwe ndi momwe amachitira ndi X-ray machubu kuti apititse patsogolo zotsatira za odwala.

Kumvetsetsa mtunda wa chowunikira chosiyana

Chowunikira chosinthika chimatanthawuza kuthekera kwa makina a X-ray CT kuti asinthe mtunda pakati pa chubu cha X-ray ndi chowunikira. Makina achikhalidwe a CT nthawi zambiri amagwiritsa ntchito malingaliro osasunthika, omwe amachepetsa kusinthasintha kwa zithunzi ndi mtundu. Pothandizira kuyang'ana kosinthika, makina amakono a CT amatha kukhathamiritsa njira yojambulira potengera zofunikira za sikani iliyonse.

Limbikitsani chithunzithunzi chabwino

Chimodzi mwazabwino zazikulu za VFDD m'makina a X-ray CT ndikuwongolera bwino kwazithunzi. Posintha kutalika kwake, dongosololi limatha kupititsa patsogolo kusintha kwa malo ndi kusiyanitsa, zomwe zimapangitsa kuti pakhale zithunzi zomveka bwino komanso zatsatanetsatane. Izi ndizopindulitsa makamaka m'madera ovuta a anatomical, kumene kujambula bwino n'kofunika kuti mudziwe bwino. Chubu cha X-ray chimagwira ntchito yofunika kwambiri pochita izi, chifukwa chimatha kuwerengedwa molingana ndi kutalika kokhazikika kuti apereke mlingo woyenera wa radiation, kuwonetsetsa kuti chithunzicho chikusungidwa popanda kusokoneza chitetezo cha odwala.

Kuchita bwino kwa mlingo

Ubwino wina wa mtunda wa chojambulira chosinthasintha ndikuwongolera bwino kwa mlingo. M'makina achikhalidwe osakhazikika, mlingo wa radiation umakhala wofanana mosasamala kanthu za malo ojambulira. Izi zingayambitse kuwonetseredwa kosafunikira m'madera ena ndi kuwonetseredwa mochepa m'madera ena. Ndi VFDD, chubu cha X-ray chimatha kusintha kutulutsa kwa radiation kutengera mtunda kuchokera pa chowunikira, ndikupangitsa kuti mlingo ukhale wolondola. Izi sizimangochepetsa kuwonetseredwa kwa ma radiation kwa odwala komanso kumathandizira chitetezo chonse cha njira yojambula.

Ma protocol osinthika osinthika

Kuyambitsidwa kwa VFDD kumapangitsa kuti pakhale kusinthasintha kwakukulu muzojambula zojambula. Madokotala amatha kusintha utali wokhazikika potengera zomwe wodwala akufuna komanso gawo lomwe akufuna. Mwachitsanzo, utali wotalikirapo ukhoza kukhala wopindulitsa kwambiri pojambula ziwalo zazikulu za thupi, pomwe utali wocheperako ukhoza kukhala woyenera pazigawo zing'onozing'ono, zovuta kwambiri. Kusinthasintha kumeneku kumatsimikizira kuti machitidwe a X-ray CT amatha kusintha zochitika zosiyanasiyana zachipatala, kuwapanga kukhala chida chogwiritsira ntchito pojambula zithunzi.

Kukonzanso kwa 3D kowonjezera

Ma detectors osinthasintha amathandiziranso kupititsa patsogolo luso lomanganso la mbali zitatu (3D). Pojambula zithunzi pamatali osiyanasiyana, makina amatha kupanga mitundu yolondola kwambiri ya 3D yamapangidwe a anatomical. Izi ndizothandiza makamaka pakukonza maopaleshoni ndikuwunika kwamankhwala, pomwe zithunzi zolondola za 3D ndizofunikira kuti pakhale zotsatira zabwino. Kudalirika kwa zomanganso izi kumakulitsidwa ndi kuthekera kwa chubu cha X-ray kuti apereke zithunzi zofananira, zapamwamba kwambiri pamtunda wosiyanasiyana.

Pomaliza

Mwachidule, kuphatikiza kwa ma variable focus distance detectors (VFDDs) mu X-ray CT machitidwe akuyimira kupita patsogolo kwakukulu kwaukadaulo woyerekeza zamankhwala. Mwa kukhathamiritsa ubale wapakati pa chubu cha X-ray ndi chowunikira, ma VFDD amakulitsa mtundu wa zithunzi, kuwongolera magwiridwe antchito a mlingo, ndikupereka kusinthasintha kwakukulu pamapulogalamu oyerekeza. Pamene gawo la radiology likupitilirabe patsogolo, zatsopanozi mosakayikira zidzatsogolera ku mphamvu zamphamvu zowunikira komanso chisamaliro cha odwala. Tsogolo la machitidwe a X-ray CT ndi lowala, ndipo ma VFDD adzatsegula njira yowunikira bwino komanso yogwira mtima.