. Alth〔 ,ugh an llltI ' a − thin 亅 〕 ber(: 〕 p し ic brollchoscc ) pe ( ⊂ ) lympu$BF − 2. 2T , ollter diametel ' 2. 2 mIn ) allows direct observatioIL of peripheral airwa } ・ s , it is limited ill tlhe images it can c) btain, dlleし o the riberoptic scope ltself . 1 ' urpose . To improve the quality of the images , we develて) ped a ne 、 、 t ul し ra − tllinl 〕ronchovideoscope ( XPF − 240Y1 ) , WhiCh haS the Same OUteI ' diame1. er aS tlle BF − 22T in COOpera 仁 iOn With OIMUpUS CO , , Lしd . The XPF

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... − 240 Y I iS a vid − eoscope , " ' hich not . only has the smallest . GCD in tlle world , but powerS a magnifying p {} weK ' of a maxilmlm of 7〔 } times , Methods , We pe 【formed peroral ultra − thin bronchog. copy in 血ve patients wilh ぐ }r wltho 更lt COPD . The XPF − 24〔 } YIwas in − se 置 礼 ed and wedged in as many peripheral aiIways as p 〔 〕ssihle , the aiIways were bselved and phot gi ' aphed witll an SC −