CORRELATION BETWEEN THE CONTENT OF SCATTERED X-RAYS AND THE IMAGE QUALITY

AKIYOSHI OTSUKA, HIROMOTO UTSUMI, YOSHIHARU HIGASHIDA, SHIN'ICHI FUJII, NOBUO INABA, MASAJI OTA, TAKASHI NAKANISHI
1978 Japanese Journal of Radiological Technology  
I ( 1・t・・d・ ・ti ・ n ) S量nce th・ di・c ・v ・ ・y ・ f X ... y・ 圭 ・ 1895 ' a ・d th・i・ 丘・st ・ pPli ・ati 。 蜘 皿 ・ di・al tl・・漁 ・ n ち 。1 。 。 id・tig・ ・f th ... t・ ・e ・ f X ・ r・ y ・ sc ・tt・・ed by・ th... bj・ct h・ 曲 ・・ n ・n imp 。・t・ nt q ... ti... 、 Scatt ・ ・ed X ... y ・ reduce the contrast of a film and IQwer its value for diagnostic purposes . Therefore, various studies have been m 。d。 t。 devel ・ P ・・ m ... e 丘 ・ 1・ PP ・ ・at ・ ・ f・r ・limi ・ ・ti・ g ・u ・h ・ ・catt ・・ed ・ X − ray ... nd ・・ a ・e ・・ 1 亡・ th ゆ ・g・
more » ... ・e ・・ 1 亡・ th ゆ ・g・ q ・ ・lity 。f X . ヒ。 y ph 。t 。 9 ,aph 、 h。 、 bee ・ ・... iti ・・ably ・ imp ・・ved . Th ・ ・e ・ca ・ ... ed X ・ ・ay ... en ・ ... ti・ely i・・ffec ・ ive;・・m ・ , of them ca エ 1 be put to good use . It is no レ necessary , therefore , to e ! iminate ・ these . scattered X ・ rays comp ] etely , rather , the correlation between the content of scattered X − rays and the image quality should be elucidated ,Q is 100 per cent , the resp ・ nse is alm 。 st zer ・ . 「 ( 2 ) The response of seattered X . rays is almost constan 亡 irrespective of the spatial frequency 」 ( 3) ' Theoretically , X ぜ ay 丘lms used fbr ever ア day clinical purposes have Iower values of response due to scattered X − rays , To irtipreve the i鷙 age quality , these scat 亡 ered X − rays have to be eliminated , but it is not always w 三 se to try to remove them comp 正 etely . It is皿 ore important tG achieve a goQd balance between the . content of scattered
doi:10.6009/jjrt.kj00003104559 fatcat:bx7iwiyqvfdifgzh4hjkkzerhi