CT 原理与算法
CT,computed tomography
computerized tomography
计算机体层照相术计算机断层照相术计算机 控制 断层 扫描术
computerized axial tomography (CAT)
计算机控制 〔 横 〕 轴向 〔 X线 〕 断层 〔 扫描 〕
术
X-CT
computed tomography
tomo,Greek tomos[ section ]
希腊语 tomos[ 切面 ]
graphy,Latin -graphia,from Greek,from
graphein,writing or representation in a
(specified) manner or by a (specified) means or
of a (specified) object,
演示
CT
要点：
CT的地位、作用
CT发展的历史、现状、趋势
投影
CT数
反投影
重建算法概述
Hounsfield和 Cormack因发明 CT获得
1979年诺贝尔医学和生理学奖。
Central Research
Laboratories,EMI
London
G,N,Hounsfield A,M,Cormack
Tufts University
Medford,MA,USA
Electric and Musical Industries
百代唱片公司传统的 X射线装置的缺点
影像重叠。深度方向上的信息至叠在 起，
引起混淆。
密度分辨率低，对软组织分辨能力低。
所用剂量大。
CT
优点：
断层成像
密度分辨率高，对软组织分辨能力高。
（相对于 X射线成像术）
投影剂量小 （相对于 X射线成像术）
动态范围大 （相对于 X光片）
无损检测
存储方便
The Nobel Prize in Physiology or Medicine 1962
for their discoveries concerning the molecular structure
of nucleic acids and its significance for information
transfer in living material,
London
University
Harvard
University
MRC Laboratory
of Molecular
Biology
Cambridge
M,H,F,WilkinsJ,D,WatsonF,H,C,Crick
Portrait of a DNA Sequence by Roger Berry (1998)
at the Life Sciences Addition building,University of California,Davis,
在法国名城 Chambord有一座由达芬奇设计以及由法国的 Fran?ois一世于由 16世纪 (1519年 )建造的建筑物中包含两个不相交的螺旋形组成的阶梯
Medcorp
IUPS Enigma Publishing
CMA NZMA
Medical Council Aviation Med Ass
WHO
The Caduceus vs the Staff of Asclepius
Mercury (Hermes) & merchant approach disapproving Asclepius
(Physician) and the naked Graces (Meditrine,Hygeia and Panacea)
[Engraved from an original in the then Museum Pio Clemens in Rome
Galerie Mytholgique,Recueil de Monuments par A,L,Millin,Paris 1811.]
Asclepius dealt with patients - merchants make deals with clients
Asclepius is linked with a constellation of idealistic medical ideas
Hermes is linked with hermetic occultism
Mercury is identified with mercantile mercenary views
Asclepius Wand
伏羲女娲交尾图的瓷瓶（清代）
帛画、伏羲女娲交尾图 (约公元 7世纪至 10世纪 )新疆吐鲁番出土
Silk painting,depiction of sexual intercourse between Fuxi and Nuwa,
about 7~10 century,unearthed in Turpan,Xinjiang.
以化生万物为名，吐鲁番出土的一幅伏羲女娲画像成了联合国教科文组织杂志,国际社会科学,1983年试刊号的首页插图。
石雕伏羲、女娲交尾图汉代
Stone statue,a depiction of sexual intercourse between Fuxi and Nuwa,
Han Dynasty,Now in the collection of the Sichuan Museum.
山东嘉祥武氏祠东汉画像石中的伏羲、女娲及小人像
A,F,Cournand W,Forssmann D,W,Richards
The Nobel Prize in Physiology or Medicine 1956
for their discoveries concerning heart catheterization
and pathological changes in the circulatory system
Columbia University Columbia UniversityMainz University
Federal Republic
of Germany
股动脉
Cardiac catheterization
导管荣获 1946年诺贝尔生理学或医学奖发现 X线照射引起基因突变缪勒
Hermann Joseph Muller
美国印地安那大学
1890年 --1967年
Johann Radon entered the University of Vienna where he was awarded a doctorate in
1910 for a dissertation on the calculus of variations,The year 1911 he spent in G?ttingen,
became assistant professor at the University of Brünn (now Brno) for a year and then
moved to the Technische Hochschule in Vienna,
In 1919 Radon became assistant professor at Hamburg becoming a full professor in
Greifswald in 1922,He was appointed to the University of Vienna in 1947 and he
remained there for the rest of his life.
Johann Radon
Born,16 Dec 1887 in Tetschen,
Bohemia (now Decin,Czech Republic)
Died,25 May 1956 in Vienna,Austria
He worked on the Calculus of variations,
Differential geometry and Measure
theory.
CT,computed tomography
computerized tomography
计算机体层照相术计算机断层照相术计算机 控制 断层 扫描术
computerized axial tomography (CAT)
计算机控制 〔 横 〕 轴向 〔 X线 〕 断层 〔 扫描 〕
术
X-CT
computed tomography
tomo,Greek tomos[ section ]
希腊语 tomos[ 切面 ]
graphy,Latin -graphia,from Greek,from
graphein,writing or representation in a
(specified) manner or by a (specified) means or
of a (specified) object,
演示
CT
要点：
CT的地位、作用
CT发展的历史、现状、趋势
投影
CT数
反投影
重建算法概述
Hounsfield和 Cormack因发明 CT获得
1979年诺贝尔医学和生理学奖。
Central Research
Laboratories,EMI
London
G,N,Hounsfield A,M,Cormack
Tufts University
Medford,MA,USA
Electric and Musical Industries
百代唱片公司传统的 X射线装置的缺点
影像重叠。深度方向上的信息至叠在 起，
引起混淆。
密度分辨率低，对软组织分辨能力低。
所用剂量大。
CT
优点：
断层成像
密度分辨率高，对软组织分辨能力高。
（相对于 X射线成像术）
投影剂量小 （相对于 X射线成像术）
动态范围大 （相对于 X光片）
无损检测
存储方便
The Nobel Prize in Physiology or Medicine 1962
for their discoveries concerning the molecular structure
of nucleic acids and its significance for information
transfer in living material,
London
University
Harvard
University
MRC Laboratory
of Molecular
Biology
Cambridge
M,H,F,WilkinsJ,D,WatsonF,H,C,Crick
Portrait of a DNA Sequence by Roger Berry (1998)
at the Life Sciences Addition building,University of California,Davis,
在法国名城 Chambord有一座由达芬奇设计以及由法国的 Fran?ois一世于由 16世纪 (1519年 )建造的建筑物中包含两个不相交的螺旋形组成的阶梯
Medcorp
IUPS Enigma Publishing
CMA NZMA
Medical Council Aviation Med Ass
WHO
The Caduceus vs the Staff of Asclepius
Mercury (Hermes) & merchant approach disapproving Asclepius
(Physician) and the naked Graces (Meditrine,Hygeia and Panacea)
[Engraved from an original in the then Museum Pio Clemens in Rome
Galerie Mytholgique,Recueil de Monuments par A,L,Millin,Paris 1811.]
Asclepius dealt with patients - merchants make deals with clients
Asclepius is linked with a constellation of idealistic medical ideas
Hermes is linked with hermetic occultism
Mercury is identified with mercantile mercenary views
Asclepius Wand
伏羲女娲交尾图的瓷瓶（清代）
帛画、伏羲女娲交尾图 (约公元 7世纪至 10世纪 )新疆吐鲁番出土
Silk painting,depiction of sexual intercourse between Fuxi and Nuwa,
about 7~10 century,unearthed in Turpan,Xinjiang.
以化生万物为名，吐鲁番出土的一幅伏羲女娲画像成了联合国教科文组织杂志,国际社会科学,1983年试刊号的首页插图。
石雕伏羲、女娲交尾图汉代
Stone statue,a depiction of sexual intercourse between Fuxi and Nuwa,
Han Dynasty,Now in the collection of the Sichuan Museum.
山东嘉祥武氏祠东汉画像石中的伏羲、女娲及小人像
A,F,Cournand W,Forssmann D,W,Richards
The Nobel Prize in Physiology or Medicine 1956
for their discoveries concerning heart catheterization
and pathological changes in the circulatory system
Columbia University Columbia UniversityMainz University
Federal Republic
of Germany
股动脉
Cardiac catheterization
导管荣获 1946年诺贝尔生理学或医学奖发现 X线照射引起基因突变缪勒
Hermann Joseph Muller
美国印地安那大学
1890年 --1967年
Johann Radon entered the University of Vienna where he was awarded a doctorate in
1910 for a dissertation on the calculus of variations,The year 1911 he spent in G?ttingen,
became assistant professor at the University of Brünn (now Brno) for a year and then
moved to the Technische Hochschule in Vienna,
In 1919 Radon became assistant professor at Hamburg becoming a full professor in
Greifswald in 1922,He was appointed to the University of Vienna in 1947 and he
remained there for the rest of his life.
Johann Radon
Born,16 Dec 1887 in Tetschen,
Bohemia (now Decin,Czech Republic)
Died,25 May 1956 in Vienna,Austria
He worked on the Calculus of variations,
Differential geometry and Measure
theory.
