31
健康話題
ࠦᅂ྅dவ၇ෂ୕จ່ɪٙ౷ஷ
X
ᇞٙϓ྅d
100
ϋ
Ըϓ
މ
ᔼኪ੬ൢᓙٙɓ၇ࠠ
ࠅ
˓
ضݬ
͜Їʦf
း၍
ܝ
Ըɛ
މࡁ
əவ၇
X
࢛ᇞٙᅂ྅ʕᐏ՟ɛष
ଣ༆࡚
א
͛ଣɪһεٙ༟ৃd೯əመνʔΝԉ
ܓ
ᙲᅂd࿁ˢኒўຢ
א
ቝٙʷΥ
ي
dंഃٙ
ء
࢛d
X
࢛ᇞᓙᄴᙲᅂҦஔdШɛଡ଼ᔌ൳
ێ
d
൳ܓ
ɽd
ঐชΈՑፃΈ࿇
א
ชΈᇭ˪ɪ
X
ᇞ൳ˇdΪϾኬ
ߧ
ᄴኜ֜ٙ
ܓ
૿ଌdҖϓᅼᇔٙྡ྅dʔঐ
ʱ፫၇ʔΝழଡ଼ᔌٙҷᜊdჃჃʔঐቇᏐତ˾ᔼ
ኪൢᓙٙც
ࠅ
fШɰ
ܝމ
Ը
CT
ࠇ
ၑዚᓙᄴધҦ
ஔٙ೯ఢ֛əਿᓾf
X
࢛ᇞ
ࠇ
ၑዚᓙᄴધ
(X-Ray Computed Tomography)
Ҧஔdᔊ၈
CT
Ҧஔdঐਗ਼ɛlzٙኜ֜˸ͭٙe
৷༆ؓ
ܓ
ٙҖόᜑͪ̈ԸdһॆྼήᜑͪϞᗫषᜊ
ٙ༉ઋ
ر
ձЗdतй݊
໕މ
ᆯٙϘಂൢᓙԶ
əࠠ
ࠅ
Աኽd
CT
Ꮸ
ݟ
࿁ઃ٫ೌ೨߮eฦෆʃfΪϤ
̴ɓਪ˰ఱίᑗґɪՑəԘٙ౷ʿձપᄿd
Ⴉ
މ
ක௴əᔼኪൢᓙٙอ
ߏ
ʩd࿁̴ٙ೯ਂ̈
ࠠ
ࠅ
্ᘠٙ
ي
ଣኪ߅৵дձʈࢪ
ݳ
ിဧᅃΪ
Ϥᐏ
1979
ϋፕԎဧ͛ଣኪ
א
ᔼኪᆤf
ၾ
1969
ϋ
CT
ਪ˰ʘ
ڋ
ˢ༰d
ۃ
CT
Ꮸ
ݟ
ၾൢᓙҦஔ
ᐏə
ܘ
ɽٙ೯࢝fᎇഹତ˾ᑮૅ
CT
ձ൴৷
CT
ٙ
ҁഛd৷ʱ፫
CT
Ҧஔe
CT
А၍ிᅂe
CT
ɧၪྡ྅
ࠠ
ܔ
eਗ࿒
CT
ધҦஔe৶
ܓ
ඎഃɓҭ
CT
ધ
ٙอҦஔίᑗґɪᐏᄿ
ع
ٙᏐ͜ձႩ̙f̴ίː
ᛔձА၍शषٙൢᓙdኜ֜໕ᆯձช
ݑ
शषٙൢᓙd
໕ᆯʱಂձ˾ᑽशषഃ˙ࠦ͟Չ৷ሯඎٙྡ྅
Ͼᄿ
՟ع
˾əෂ୕ٙ
X
ᇞᏨ
ݟ
d
ޟ
Їෂ୕ٙͤА၍
ிᅂᏨ
ݟ
fᑗґᔼ͛࠾п
CT
࿁षɛٙशषආБൢᓙ
൳Ը൳౷ཁf
ޟ
Їί
CT
ྡ྅ٙˏኬɨආБ၇ኜ֜
शषٙ߈Ր
ݺ
Ꮸelzጐ૰eኜ֜А໕
א
ᑓ໕ٙ
ͤ߈Րˏ
ݴ
dу
ה
ፗ
CT
ˏኬɨٙʧɝ
ط
ᐕf
ה
Ϟவ
ԬආӉேɽɽ৷əɛ
ࡁ
࿁शषႩᗆeൢᓙձ
ط
ᐕ
ٙঐɢd
މ
ᔼኪٙ೯࢝ձɛ
ࡁ
ੰ˥̻ٙ৷Ъ̈
ܘ
ɽ্ٙᘠf
CT濫用:最嚴重的醫源性放射損傷
CT
Ϟпᔼ͛Ꮸ̈ᐖसՑഥഐͩᇍఖlzٙОष
ᜊf್Ͼᔼ͛
ࡁ
နකᗫ
ء
CT
ધٙτΌਪᕚd
तй݊ίᐖसΚᎈᄣ̋˙ࠦfɓϣ
CT
ધ̍ўٙ
࢛ᇞኒඎ
500
ϣ౷ஷ
X
ᇞ࢛fν
؈
ᔼ͛ᜫЫ
א
Ыٙ܀ɿਂɓϣ
CT
ધdЫᒔซਂୋɚϣk
Ӻɛࡰ
ڌ
ͪd௰
ڐ
ٙՇධӺഐ
މ؈
εᄴ
CT
ધ
ᄣ̋ᐖसࠬᎈᚤəᙆᙒfίୋɓධӺʕdНᖯ
㛪༺ձശସᔼ৫ٙlz߅ᔼ͛
1243
Τᎇዚܿ፯ٙ
षɛᅂ྅༟ࣘ㛪൙Пəཀ̘
5
ϋʕ̻ѩӊ
ࡈ
षɛ
ה
ટ
աٙ፧࢛ඎfး၍
CT
ધࣛ௰ɽٙ፧࢛๕dՉ˼࢛
ᇞԸ๕ᒔܼ̍
X
ᇞձԪ໗◞ཪᙲ˪fί
ߕ
ᑘ፬ٙ
ܢ
ൢᔼኪึϋึɪʮбٙӺഐ
؈
˿ɛʔτj̻ѩ
ӊ
ࡈ
षɛટա
45mSv
࢛ٙᇞඎᅺٙ׳࢛ᇞᙑ
׳
0.02 mSv
࢛ᇞඎf
12%
ٙषɛʊεቊաəՇ࠴
࢛ٙᇞඎ
–100 mSv
d
ޟ
Їһεf༈ӺٙୋɓЪ٫e
ෳᚆεήਜᔼᐕʕːࢩᔼਕ֜
Timothy Bullard
Ⴍj
Ң
ࡁ
ٙͦٙ݊ᜫɛ
ࡁ
จᗆՑ˼
ࡁ
͍ίቊաɽඎϞ
࢛ᇞdҎૐɛ
ࡁ
ঐቇᏐ͜வԬҦஔf
ቇ
੬ڢ
ᗫᒟdˈՉ݊೯
ڌ
ίอ
ߵ
ࣸᚆᔼኪᕏ
ႦɪٙΫᚥ˖
ڌ
Ό
ߕ
ʊ݄Бٙ
CT
ધʕϞ
ਗ਼
ڐ
ɧʱʘɓٙધ݊ʔ̀
ࠅ
ٙf˖ʕܸ̈dί
ߕ
ӊϋϞ
2000
ຬϓϋɛձε
100
ຬՅഁ
ה
ቊաٙ፧
࢛݊Ӛ̀
ࠅ
ٙfЪ٫Ⴉ
މ
መνઃ٫ɽஈ˙ձʔც
ࠅ
ٙ
CT
ધഃਪᕚஷཀᔼઃʘගٙ๖ஷᏐঐһλή༆
Ӕf༈ၝ
ࠑ
ٙ˴
ࠅ
Ъ٫ࡩ
ࡐ
ˢԭɽኪᔼኪʕː׳࢛
ኪӺʕː˴
David Brenner
Ⴉ
މ
dࠠል
CT
ધ݊
ঞᔬ̙३ٙd૩ೌ࣬ኽfɓධၝ
ڌࠑ
dટաཀ
CT
ધٙषɛʕd
30%
ٙषɛཀɧϣધd
7%
ٙ
षɛཀʞϣ
א
һεd
4%
ٙषɛཀɘϣʘ
εfவᒔ
ࠅ
ᓥໆᔼ͛
ࡁ
˚ूᄣ̋ٙ
ڭ
ᚐᔼᐕf
Bullard
Ⴍjν
؈
ᔼ͛፲ဍə
ݔ
Ԭତdԟ˼ఱ݊Ϟ
ཀ፹ٙdவ݊ᔼᐕٙਿ͉ࡡ
ۆ
f˼ᒔܸ̈d
CT
ધ
ʔึͭӱତϞਓЪ͜dҞeೌ೨dᜫषɛတ
จϾᓥf
ᆽήႭdεˇ࢛ᇞඎʑၑεճk
CT
ધɪ
ࡈ
˰
ߏ
80
ϋ˾ৎᄿ
ع
Դ͜dϾ࢛ᇞˏ೯ٙᐖसɽ
ߒ
ც
ࠅ