コンピュータ支援画像診断学会論文誌 Vol.5

Jun. 2001

Virtual Endoscopyǲ೘ϧኍջաࠎ‫ޙ۾ޙ۾‬᪋ࡾ‫ޙ‬ᆅሱᇼ

Virtual Endoscopy
Kensaku Mori
Graduate School of Engineering, Nagoya University
1. ɂȫɔȾ͑ ৊ ԇ ю ᛾ ᨢ ʁ ʃ ʐ ʪ (Virtualized Endoscope System:VES)[1-6] ɂᴰඒЫԗႊ႕ЅɁ୿ȪȗᜊߔศɁˢȷȻȪȹࢥࢿȢҟႊȨɟɞɛșȾȽȶȲᴫVES ɂᴰඒЫԗႊ႕ЅȾ‫ژ‬ȸȠȕȲȞɕ޴᪨Ɂю᛾ᨢȺᜊߔȪȹȗɞȞɁɛșȽ႕Ѕɥႆ਽ȬɞʁʃʐʪȺȕɝᴩ޴᪨Ɂю᛾ᨢȻ෗ᢎȪᴩ(1) পᐐȾᔍმɥ˫țȽȗᜊߔȟժᑤᴩ(2) ஽ᩖᄑˁ‫ک‬੔ᄑҤጙȟȽȗᴩ(3) ࿑ौᦀ᜛ລȟժᑤᴩȻȗȶȲୣ۹ȢɁҟཟɥધȷᴫɑȲᴩᴰඒЫԗႊ႕ЅɥႊȗȲᜱ୽ɁɒȽɜȭᴩɮʽʟɳ˂ʪʓɽʽʅʽʒᴩਖ਼ᚓ᜛႕቏ಘᴩଡ଼ᑎख़ႊᴩ೫౼ˁਖ਼ᚓʔʝɼ˂ʁʱʽȽȼሗȁɁᄻᄑȾҟႊժᑤȺȕɞᴫǽ ԗ ႊ ႕ Ѕ Ɂ ɽ ʽ ʞ ʯ ˂ ʉ ᜱ ୽ ୈ ૵ (Computer AidedDiagnosis; CAD) ʁʃʐʪɥᐎțȲ‫ک‬նᴩඒɁᴯȷɁʉɮʡɁʁʃʐ ʪᴩ(a) ႱࢠȻ९ɢɟɞ᥂ͱɥʨ˂ɷʽɺȪԗ࢙Ⱦ૬ᇉȬɞʁʃʐʪᴥ೫ҋ‫ ټ‬CADᴦᴩ(b) ɮʫ˂ʂʽɺᚽᏚȾɛɝଟफȨɟȲԗႊ႕ЅɥɢȞɝɗȬȢԗ࢙Ⱦ૬ᇉȬɞȦȻȺᜱ୽ɥୈ૵ȬɞʉɮʡɁʁʃʐʪᴥ᚜ᇉ‫ ټ‬CADᴦᴩȟ‫ސ‬٣ȬɞᴫVES ȟᩒᄉȨɟȲछқɂऻᐐɁʉɮʡɁʁʃʐʪȺȕȶȲȟᴩఊᣋȺɂ‫۾‬ᒅʧʴ˂ʡ೫ҋȻȗȶȲൡᑤ[7]ȽȼȻጸɒնɢȮɞȦȻȺᴩ(a)(b) ˵ᐐɥֆɓᯚ࣊Ƚ CAD ʁʃʐʪᴥፋն‫ ټ‬CADᴦɋȻᄉࠕȪȹȗɞᴫɑȲ୿ȪȗᝁɒȻȪȹ޴ю᛾ᨢȻ VES Ɂᙤնɕ೫᜞ȨɟȹȝɝᴩCAD ʁʃʐʪȻȪȹɁ୿ȪȗҟႊศȟఙशȨɟȹȗɞ[8-10]ᴫటሟȺɂ VES Ɂഫ਽ȾȷȗȹዊԨȾᣖɌᴩఊᣋɁ VES ȾᩜȬɞᆅሱӦտȞɜ̾ऻɁࠕఖɥ૘ɞᴫ
2. VES Ɂ‫ژ‬టഫ਽VES ɂ‫ژ‬టᄑȾᴩ(1) Ұѿျ᥂ᴩ(2) ૫႕᥂ᴩ(3) ʰ˂ʀɮʽʉʟɱ˂ʃ᥂ɁᴰȷȞɜഫ਽ȨɟᴩȦɟȾӏțȹᴩ࿑ौᦀ᜛ລൡᑤᴩᒲӦʔʝɼ˂ʁʱʽൡᑤȽȼȻȗȶȲ͇ӏൡᑤȟႊ৙Ȩɟɞᴫ(1) Ұѿျ᥂Ձ႕Ѕɥᝣɒᣅɒᴩߦ៎ȻȽɞᒨ‫ب‬Ɂʅɺʫʽʐ˂ʁʱʽɥᚐșᴫीɜɟȲᬻ‫ڒ‬Ⱦ Marching Cubes ศɥᤛႊȬɞȦȻȺᒨ‫ب‬ढ࿡ɥ᚜Ȭ˧ᜏढʛʍʋᏰɥीɞᴫඒɁ૫႕᥂Ⱥႊȗɞʶʽʊʴʽɺศȟʦʴʯ˂ʪʶʽʊʴʽɺศɁ‫ک‬նᴩՁ႕ЅɁ༟࣊ϏȾߦख़ȬɞᓨȻ˪ᣥ஥࣊ɥްɔɟɃɛȢᴥȦɁͽഈȟʅɺʫʽʐ˂ʁʱʽȾᄾछȬɞᴦᴩ஥ᇉᄑȾᒨ‫ب‬ᬻ‫ڒ‬ɥ՘ɝҋȬ॒ᛵɂȽȗᴫ(2) ૫႕᥂͑৊ԇю᛾ᨢЅᴥVE Ѕᴦɥႆ਽Ȭɞ᥂ґȺȕɞᴫᣮࢠᴩɿ˂ʟɱʃʶʽʊʴʽɺศȻʦʴʯ˂ʪʶʽʊʴʽɺศ
[12,13]ɁᴯȷȟႊȗɜɟɞᴫȗȭɟɁ‫ک‬նȺɕᒨ‫ب‬ю᥂Ⱦ᛾ཟͱᏚɥᜫްȪᴩᣥ᛾ੵफᴩʃʧʍʒʳɮʒбໃɥႊȗɞᴫɿ˂ʟɱʃʶʽʊʴʽɺศɥႊȗɞ‫ک‬նᴩҰѿျ᥂ȺीɜɟȲ˧ᜏढʛʍʋᏰɥɺʳʟɭʍɹʁʃʐʪ
ȾᣞαȬɞȦȻȺ VE Ѕȟीɜɟɞᴫʦʴʯ˂ʪʶʽʊʴʽɺɁ‫ک‬նɂᴩՁ႕ЅɁ༟࣊ϏȾߦख़Ȭɞᓨˁ˪ᣥ஥࣊ʐ˂ʠʵɥ‫ژ‬Ⱦоӌ႕ЅȞɜᄽ૚ᄑȾ VE Ѕɥႆ਽ȬɞᴫȦɟɜɁ૫႕ɂʰ˂ʀɁ଩ͽȾख़ȫȹᄽȴȾ޴ᚐȨɟɞᴫ(3) ʰ ˂ʀɮʽʉʟɱ˂ʃ᥂ᒨ‫ب‬ю᥂ɥᒲႏȾ૘ጪȬɞȲɔɁ̈́ጸɒȟႊ৙Ȩɟɞᴫʰ˂ʀɂʨɰʃɥ଩ͽȬɞȦȻȺᴩ͖৙஁տɋɁᣵፖᄑȽҰ᣹ˁऻᣝᴩ᛾፷஁տɥᢉȻȪȲɅɀɝᴩ͑৊ю᛾ᨢષоጽᡅȾȰȶȲऻ᣹ȟժᑤȺȕɞᴫ(4) ȰɁͅൡᑤ࿑ौᦀ᜛ລൡᑤǽVE Ѕ˨ȺɁᩋȨᴩ‫ے‬ᬂȾภȶȲᩋȨᴩᜏ࣊ᴩͶሥᴩ᚜ᬂሥȻȗȶȲ࿑ौᦀɁ᜛ລൡᑤȟႊ৙ȨɟȹȗɞᴫᒲӦʔʝɼ˂ʁʱʽൡᑤǽᒨ‫ب‬Ɂᓸ፷ɥᒲӦ઄ҋȪȰɟȾภȶȲᒲӦʔʝɼ˂ʁʱʽɥᚐșᴫ෥ከୈ౔ջᒲӦ᚜ᇉൡᑤǽߦ៎ȻȬɞᬻ‫ڒ‬ȟ෥ከୈȺȕɞ‫ک‬նᴩVE Ѕ˨Ⱦ෥ከୈյ౔Ɂ౔ջɥ᚜ᇉժᑤȺȕɞᴫଡ଼ᑎख़ႊൡᑤǽ෥ከୈ౔ջȾᩜȬɞɹɮʄɥᒲӦᄑȾ૬ᇉȬɞᴫَ 1 VES Ɂ႕ᬂ΍Ȼ࿑ौᦀ᜛ລൡᑤɁ޴ᚐ΍ᴫࡿ:͑৊ԇю᛾ᨢЅȻ෥ከᒀძव᜛ລ΍ᴫծ˨:۶ढЅᴩծ˩:ʃʳɮʃЅᴩَ 2 ‫۾‬ᒅᓸ፷ȾภȶȲᒲӦʔʝɼ˂ʁʱʽ΍ᴫَ˹᳈፷ȟᒲӦʟʳɮʃʵ˂ጽᡅɥᇉȬᴫ-- 531 --Journal of Computer Aided Diagnosis of Medical Images Vol.5 Jun. 2001
3. VES Ɂख़ႊ΍(1) ޴ю᛾ᨢ೫౼͑৊ԇю᛾ᨢʁʃʐʪɁख़ႊɁˢȷȪȹఊᣋาᄻȨɟȹȗɞɕɁɁˢȷȾᴩ޴᪨Ɂю᛾ᨢ೫౼ɥ VES Ⱦɛɝʔʝɼ˂ʁʱʽȬɞʁʃʐʪɁᩒᄉȟમȥɜɟɞᴫ͍᚜ᄑȽᆅሱȻȪȹɂᴩ୫စ[8] [9] [10]ȽȼȟȕɞᴫȦɁʁʃʐʪɁ‫ژ‬టᄑȽɽʽʅʡʒɂᴩ޴᪨Ɂю᛾ᨢȾɛɞᜊߔ˹ᴩး٣ɁᜊߔͱᏚᴩᒀძ‫ސ‬٣ͱᏚɑȺɁ᝗߳ᴩ‫ے‬ᬂ˩Ɂ‫ސ‬٣Ȭɞ᥾ᛵᒨ‫ب‬ᴩȽȼɥ೫౼ԗ࢙ȾߦȪȹ૬ᇉȬɞȦȻȺȕɞᴫ޴ю᛾ᨢɥႊȗȲ೫౼஽Ⱦɂᴩԗ࢙ɂߦ៎ȻȬɞᒨ‫ب‬Ɂ‫ے‬ᬂɁɒȪȞᜊߔȬɞȦȻȟȺȠȭᴫᒀძɁ‫۾‬ȠȨ᜛ລȽȼɕ˪ժᑤȺȕɞᴫɑȲᴩး٣ɁՋ߈ȽᜊߔͱᏚɥᅺɞȦȻɕᫍȪȗᴫˢ஁ VES ȺɂᴩȦɟɜɁষ‫ڨ‬ɥ߁஧Ⱦ՘ीժᑤȺȕɞᴫ޴ю᛾ᨢ೫౼˹Ⱦ VESɥҟႊȬɞȦȻȟȺȠɞɁȺȕɟɃᴩ޴ю᛾ᨢ೫౼ɥɛɝӛ౓ᄑȾᚐșȦȻȟժᑤȻȽɞᴫȦɁɛșȽʁʃʐʪɥഫኳȬɞȾɂᴩ(a) း٣Ɂ޴ю᛾ᨢͱᏚɁ՘ीᴩ(b) ೫౼ୈ૵ষ‫ڨ‬Ɂ૬ᇉᴩɁᴯȷɁ‫ژ‬టൡᑤȟ॒ᛵȻȽɞᴫȰȦȺኂᐐɁᆅሱɺʵ˂ʡȺɂᴩҰᐐɁ‫ץ‬ᭉȾߦȪȹ Imagebased registration ਖ਼ ศɥᴩ ऻ ᐐ Ⱦ ɂ Augmented Reality ੫ᚓɥҟႊȬɞȦȻȺᜓขɥ᜛ȶȹȗɞᴫǽ෥ከୈᨢɁɛșȽаብवɁጯȗю᛾ᨢɁ‫ک‬նᴩ‫ک‬੔ᄑҤጙȞɜȰɁаብȾͱᏚʅʽɿɥ՘ɝ͇ȤɞȦȻɂᫍȪȗᴫɑȲᴩю᛾ᨢᒲͶᒲႏȾ௽ȥɞȦȻȟȺȠɞȲɔᴩю᛾ᨢ۶᥂ȾᚽᅔȪȲͱᏚʅʽɿȞɜю᛾ᨢаብͱᏚɁລްɥᚐșȦȻɕٌᫍȺȕɞᴫȰȦȺᴩVES Ɂ᛾ཟͱᏚˁ஁տʛʳʫ˂ʉɥറȁȾ۰ԇȨȮᴩး஽ҩȾȝȤɞ޴ю᛾ᨢ႕ЅȾఊɕ᭒ͬȬɞ VE Ѕɥ෰ɔᴩȰɁ஽Ɂ VES Ɂ᛾ཟͱᏚˁ᛾፷஁տɥ޴ю᛾ᨢɁး٣ɁᜊߔͱᏚˁᜊߔ஁տȻɒȽȬᴫȦɟɥ޴ю᛾ᨢʝʑɴ႕Ѕпʟʶ˂ʪȾߦȪȹ޴ᚐȬɞȦȻȺю᛾ᨢаብͱᏚɥʒʳʍɷʽɺȬɞȦȻȟժᑤȻȽɞᴫ޴ю᛾ᨢʝʑɴ႕ЅȾߦȪȹᜊߔͱᏚ૜ްѿျɥᚐȶȲፀ౓Ɂˢ΍ɥَᴰȾᇉȬᴫǽ೫౼ষ‫ڨ‬Ɂ૬ᇉ஁ศȻȪȹɂᴩю᛾ᨢаብͱᏚ૜ްፀ౓ɥ‫ژ‬Ⱦ VES Ⱥीɜɟɞষ‫ڨ‬ɥ޴ю᛾ᨢ႕Ѕ˨ȾʨʍʞʽɺȬɞȦȻȺᴩስᦉԲ᪙ᬻ‫ڒ‬Ɂ૬ᇉᴩး٣ᜊߔɥᚐȶȹȗɞ᥂ͱɁᜓҳ‫ޙ‬ᄑջለɁ᚜ᇉᴩCT ႕Ѕ˨ȺɁᜊߔͱᏚʨ˂ɷʽɺȽȼȟᝁɒɜɟȹȗɞᴫ(2) ‫۾‬ᒅʧʴ˂ʡ CADTime1VES ᩒᄉछқȞɜɁख़ႊґ᥿ɁˢȷȻȪȹ‫۾‬ᒅʧʴ˂ʡ೫ҋȟȕȥɜɟɞᴥَ 4ᴦᴫ೫౼ԗ࢙ɂ VES ɥᒲɜ଩ͽȬɞȦȻȺ‫۾‬ᒅю᥂ɥ૘ጪȪʧʴ˂ʡɁᄉ᛻ɥᚐșᴫ࿑ȾዢّȺɂ‫۾‬ᒅȟɦɁҾնȟᯚȢᴩୣ۹ȢɁᆅሱȟ᣹ɔɜɟȹȗɞᴫ‫۾‬ᒅ೫౼ߩႊɁ VES ɕ‫ֿף‬ԇȨɟȹȗɞᴫఊᣋȺɂࠈလষ‫ڨ‬ɥҟႊȪȹ‫۾‬ᒅʧʴ˂ʡɥᒲӦ೫ҋȬɞ CAD ʁʃʐʪȟาᄻȨɟȹȗɞᴫ୫စ[7]ɁʁʃʐʪȺɂᴩ‫۾‬ᒅʧʴ˂ʡψᛃᬻ‫ڒ‬઄ҋѿျऻᴩVE Ѕ˨Ⱦ઄ҋፀ౓ɥ᥾ɀնɢȮȲ႕Ѕɥʰ˂ʀȾ૬ᇉȬɞᴫʰ˂ʀɂ‫۾‬ᒅю᥂пͶɥ૘ጪȬɞ॒ᛵɂȽȢᴩᒲӦ೫ҋȨɟȲʧʴ˂ʡψᛃᬻ‫͇ڒ‬ᣋɁ VE ЅɥᜊߔȬɟɃɛȗȲɔᴩᝣफԗ࢙Ɂ២આɥ‫ࢥ۾‬ȾҭນȬɞȦȻȟժᑤȻȽɞᴫ
(3) ᒨ‫ب‬۰ढȻ VES
ि఼Ɂ VES Ⱥɂ޴ю᛾ᨢȾ᭒ͬȪȲ႕Ѕɥႆ਽ȬɞȦȻȾ᥾ȠȟᏚȞɟȹȗȲᴫȪȞȪȽȟɜᑑˁ‫۾‬ᒅȽȼɁɛșȽю᥂Ⱦ‫۾‬ȠȽሳ฿ᬻ‫ڒ‬ɥધȷᒨ‫ب‬ɥ VES ȺᜊߔȬɞ‫ک‬նᴩୣ۹ȢɁ᛾ཟͱᏚˁ᛾፷஁տ۰௿଩ͽɥᎱɝᣌȬ॒ᛵȟȕɞᴫȦɟɥᜓขȬɞ஁ศȻȪȹ͑৊ᄑȾᒨ‫ب‬ɥҒᩒˁࠕᩒȪȲ࿡ৰȺ૬ᇉȬɞਖ਼ศɁᩒᄉȟ᣹ɔɜɟȹȗɞᴥَ 5ᴦᴫȦɁɛșȽࠕᩒ႕ЅɥႊȗɞȦȻɛɝᴮ౒Ɂ႕ЅɥᜊߔȬɞɁɒȺᒨ‫ےب‬ᬂढ࿡ɥ߁஧ȾᜊߔȬɞȦȻȟժᑤȻȽɞᴫ‫۾‬ᒅᬻ‫ڒ‬Ɂ‫ک‬նᴩҰᣖɁ‫۾‬ᒅȟɦψᛃᬻ‫ڒ‬ᒲӦ઄ҋਖ਼ᬲȻጸɒնɢȮɞȦȻȺᴩ୿Ȫȗʃɹʴ˂ʽɺʎ˂ʵȻȽɝीɞժᑤॴɥધȷᴫ
(4) ํͶӌ‫ޙ‬Ȼ VESVES Ɂ୿ȪȗҟႊศȻȪȹᴩ෥ከୈю᥂Ɂɲɬʟʷ˂ᜓ
౏Ȼ VES ɥጸɒնɢȮɞᆅሱȟȕȥɜɟɞ[12]ᴫȦȦȺɂᴩVE Ѕႆ਽ɁȲɔȾ઄ҋȨɟȲ෥ከᬻ‫ڒ‬Ȟɜ᜛አํͶӌ‫ޙ‬ʁʩʯʶ˂ʁʱʽɁȲɔɁʬʑʵɥႆ਽Ȫᴩ֣֋஽ȾȝȤɞ෥ከୈю᥂ȺɁɲɬʟʷ˂ᜓ౏ɥᚐȶȹȗɞᴫ᜛አፀ౓ɂ VE Ѕ˨Ⱦ᥾Ⴒ᚜ᇉȨɟᴩ࿳ሸ᥂ґȽȼȺɁɲɬʟʷ˂ɥ߁஧ȾᆬᝓȬɞȦȻȟȺȠᴩ෥ከୈȾȼɁሌ࣊Ɂ២ᔸȟႆȫȹȗɞȞɥੰ૱ժᑤȺȕɞᴫ఼߬ᄑȾɂʃʐʽʒᤣ੻ˁႡᏚɁʁʩʯʶ˂ʁʱʽʁʃʐʪɋɁᄉࠕȟఙशȨɟȹȗɞᴫ(5) ఝᜊߔᬻ‫ڒ‬೫ҋȻ CAD
VES ɥგ۰᥂೫ҋ CAD ȻȪȹҟႊȬɞ‫ک‬նᴩԗ࢙ɂ᛻ᕶȻȪȽȢᒨ‫ب‬ю᥂ɥпȹᜊߔȬɞ॒ᛵȟȕɞᴫˢᓐᄑȾᒨ‫ب‬ɂᛓ᫆Ƚढ࿡ɥધȷȲɔᴩఝᜊߔᬻ‫ڒ‬ȽȢʟʳ˂

Time2

Time3Time4َ 3 Image-based registration Ⱦ‫ژ‬ȸȢ޴ю᛾ᨢɵʫʳʒʳʍɷʽɺፀ౓ᴫ˨෉ࡿȞɜ஽ᩖᬲȾ˶ɌɜɟȲ޴ю᛾ᨢ႕ЅɥᇉȬᴫ˩෉ɂ˨෉޴ю᛾ᨢ႕ЅȾߦख़ȬɞɵʫʳͱᏚ૜ްፀ౓Ⱦ‫ژ‬ȸȠ͑৊ԇю᛾ᨢ႕Ѕɥႆ਽෡ɜʶɮᴫ˨˩෉Ɂ႕Ѕɥ෗ᢎȬɞȦȻȺകɀඩȪȢ޴ю᛾ᨢɵʫʳͱᏚɁʒʳʍɷʽɺȟᚐɢɟȹȗɞȦȻȟɢȞɞᴫ
- 54- 2--

コンピュータ支援画像診断学会論文誌 Vol.5

َ 4 ᄽᒅȟɦɁ VES Ⱦɛɞᜊߔ΍ᴫJun. 2001

َ 5 ᑑᬻ‫ڒ‬Ɂ͑৊ࠕᩒЅᴫȦɁ႕Ѕᴮ౒ɥᜊߔȬɞɁɒȺᑑ‫ے‬ɅȳɁᠨᚐ࿡มɥੰ૱ȬɞȦȻȟժᑤȺȕɞᴫ

َ 6 ʟʳɮʃʵ˂˹ఝᜊߔȺȕȶȲᬻ‫ڒ‬Ɂ૬ᇉ΍ᴫʰ˂ʀɂ‫۾‬ᒅюɥᒲႏȾʟʳɮʃʵ˂ɥᚐȗᴩȰɁఊ˹Ⱦఝᜊߔ
ᬻ‫ڒ‬Ɂᜤ᧸ɥᚐȶȲᴫ༟ȗᓨȺᇉȨɟȹȗɞᬻ‫ڒ‬ȟఝᜊߔᬻ‫ڒ‬Ⱥȕɞᴫᴰ౒ɁَȺɂȰɟȱɟႱȽȶȲ᛾ཟͱᏚȺɁఝᜊߔᬻ‫ڒ‬ɥᇉȪȹȗɞᴫȦɟɜɁَȞɜɢȞɞɛșȾɅȳɁᬻ‫ڒ‬ɁᚾϫȾୣ۹ȢɁఝᜊߔᬻ‫ڒ‬ȟ‫ސ‬٣Ȭɞᴫʃʵ˂ȬɞȦȻɂٌᫍȺȕɞᴫȰȦȺᴩVES ɥႊȗȲᒨ‫ب‬ю᥂Ɂʟʳɮʃʵ˂˹ᜊߔɥᚐȶȲᬻ‫ڒ‬ɥᜤ᧸Ȫᴩʟʳɮʃʵ˂ጶ̘ऻఝᜊߔȺȕȶȲᬻ‫ڒ‬ɥ૬ᇉȬɞਖ਼ศȟ‫֖ڨ‬Ȩɟȹȗɞ[13]ᴥَ 6ᴦᴫటਖ਼ศɥႊȗɞȦȻȺᴩԨȽɞᜊߔॗɟȾɛɞგ۰᥂Ɂ᛻ᕶȻȪɥ᩻ȣȦȻȟժᑤȻȽɞᴫ
3. NewVES
VES ȟ CAD ʁʃʐʪȻȪȹްᅔȬɞȾɂᴩާΙȞȷΈȗɗȬȗʁʃʐʪȾ୎‫ױ‬Ȭɞ॒ᛵȟȕɞᴫि఼ɂ VESɂ᫿ࢠȾᯚΙȽɺʳʟɭʍɹʃʨʁʽ˨ȺɁɒӦͽȪȹȗȲȟᴩᣋࢳɁ PC Ɂ᜛አᑤӌտ˨ȾͧȗᴩާΙȽ PC˨Ⱥɕ޴ႊ˨ԚґȽᣱ࣊Ⱥ VES ȟӦͽȬɞɛșȾȽȶȲᴫɑȲᴩᒗ‫۾‬ȽᦀɁ᜛አᦀɥᛵȬʦʴʯ˂ʪʶʽʊʴʽɺศɕʇʟʒɰɲɬɁɒȺʴɬʵʉɮʪȾ޴ᚐȬɞȦȻȟժᑤȻȽȶȹȠȲᴫȦȦȺɂᴩVES ȟ CAD ʁʃʐʪȻȪȹࢥࢿȢҟႊȨɟɞȲɔȾኂᐐɜᩒᄉɥ᣹ɔȹȗɞ୿Ȫȗ˰͍Ɂ͑৊ԇю᛾ᨢʁʃʐʪŽNewVESžɥጳ̿Ȭɞᴥَ 7ᴦ
ᴫNewVES ȾɂʇʟʒɰɲɬȾɛɞᯚᣱʦʴʯ˂ʪʶʽʊʴʽɺศȟ޴ᚽȨɟȹȝɝ[14]ᴩՁ႕ЅɥᝣɒᣅɓɁɒȺ̷Ͷю᥂ɁᒲႏȽʔʝɼ˂ʁʱʽȟժᑤȻȽɞᴫ͏˩ᴩNewVES ȟ϶țɞൡᑤɥጳ̿Ȭɞᴫˁႆ਽႕Ѕ͑৊ԇю᛾ᨢ႕ЅᴥюढЅᴦᴩ۶ढЅᴩʃʳɮʃ႕Ѕᴩ͖৙୽ᬂЅˁ3 ඒЫʶʽʊʴʽɺൡᑤ
ǽʧʴɾʽʶʽʊʴʽɺൡᑤǽǽ͖৙ᓨᜫްᴩʃʧʍʒʳɮʒбໃᴩ
OpenGL ʙ˂ʓɰɲɬȾɛɞᯚᣱ૫႕ǽʦʴʯ˂ʪʶʽʊʴʽɺൡᑤ
ʇʟʒɰɲɬȾɛɞᯚᣱʶʽʊʴʽɺᴩʃʧʍʒʳɮʒбໃᴩᓨˁ˪ᣥ஥࣊ɁʊɮʔʩʍɹȽ۰௿ᴩၥ‫ہ‬бᴩછୠՕߪбᴩᨢᬂՕߪб᜛አᴩʳʣʵȨɟȲ᥂ͱɁҝᓨ᚜ᇉᴩ᚜ᇉ VOI ᜫްᴥَ 8ᴦ
ˁVolR ႕Ѕ˨ȾȝȤɞᩜ॑ᬻ‫ڒ‬઩ްཟ઩ްᴩᬂ઩ްᴩ‫گ‬઩ްˁ͑৊ԇю᛾ᨢʬ˂ʓʨɰʃɵ˂ʇʵȺɁ઩ᇉ஁տɋɁҰˁऻ᣹Ұˁऻ᣹ᣱ࣊ɂ 3 ෉᪡ᴩᒲӦऻᣝᴥᢀᡀɁᣡʒʶ˂ʃᴦᴩɅɀɝᴩ᛾፷஁տ۰௿ᴩ‫ے‬ᬂȻɁᚗሶҜްᴥឬ֖ᴩᣱ࣊ʊɰʽᴦˁ۶ढʬ˂ʓ‫و‬ᢆˁછ‫۾‬᎔ߴᴩ۶ढʬ˂ʓȞɜю᛾ᨢʬ˂ʓɋɁᄽ૚ሉᚐˁՁ႕Ѕᝣɒᣅɒൡᑤ
෱ႊढࣻᴩDICOM ढࣻˁʃʳɮʃ႕Ѕ᚜ᇉߩႊɰɮʽʓɰʃʳɮʃᣞɝᴩ᚜ᇉస͔۰௿ᴩ
႕ЅɁ͖৙ςလɁછ‫۾‬ᴩʨɰʃȾɛɞ႕Ѕʃɹʷ˂ʵᴩʃʳɮʃ႕Ѕ˨ȺɁʨ˂ɷʽɺᴩպᜓ᪍ˁ႕Ѕѿျൡᑤᬻ‫ڒ‬છएศᴩ෥ከୈᬻ‫ڒ‬ᒲӦ઄ҋൡᑤᴩ˧ᜏढʛʍʋႆ਽ᴩʦɹʅʵʛʍʋႆ਽

-- 553 --Journal of Computer Aided Diagnosis of Medical Images Vol.5 Jun. 2001

َ 7ǽNewVES Ɂ႕ᬂ΍ᴫ႕ᬂࡿ:͑৊ю᛾ᨢЅᴩծ˨:‫ے‬ᬂ˩ষ‫ڨ‬႕ᬂᴩծ˩:ʃʳɮʃЅَ 8ǽ۶ढЅ᚜ᇉʬ˂ʓᴩVOI ᜫްൡᑤɥҟႊȪȹᑢ᥂ᚌከጕɁˢ᥂ɥᜊߔȪȲ΍ᴫʦʴʯ˂ʪʶʽʊʴʽɺ஁
Ⱦɛɝ૫႕Ȩɟȹȗɞᴫ

ᴥᴮ- ʦɹʅʵɥ 6 ᬂͶȻȪȹ᚜းᴦᴩԨጠࢲ໙ԇˁ᚜ᇉɰɮʽʓɰ
3 ႕ᬂպ஽᚜ᇉᴥᣵଆᴩ࿲቏᚜ᇉцժᑤᴦᴩɰɮʽʓɰɿɮʄժ۰ᴩյɰɮʽʓɰȺ͏˩Ɂʬ˂ʓȟᤣ੻ժǽю᛾ᨢᴩ۶ढЅᴩAxial Ѕᴩǽ‫ے‬ᬂ˩ষ‫ڨ‬Ѕᴩ᛾፷஁տ‫ٹ‬ᄽЅˁ᜛ລൡᑤ
2 ཟᩖɁᄽ፷ᠾᫌᴩͶሥᴩ᚜ᬂሥ
ˁᜊߔ᥂ͱߦख़ȸȤൡᑤ͑৊ю᛾ᨢЅᴥ۶ढЅ˨Ⱥʨɰʃɵ˂ʇʵɥʓʳʍɺȬɞȻ Axial ႕Ѕ˨ȾȰɁͱᏚɥɹʷʃɵ˂ʇʵȺ᚜ᇉᴦ
ˁᜊߔࠚධᜤ᧸ˁѓႆൡᑤˁଡ଼ᑎႊʬ˂ʓ෥ከୈ౔ջᒲӦ᚜ᇉᴩɹɮʄ᚜ᇉ
4. ɓȬɆట ሟ Ⱥ ɂ ୿ Ȫ ȗ ႕ Ѕ ᜊ ߔ ศ Ⱥ ȕ ɞ Virtual EndoscopySystem Ɂጳ̿ɥᚐȗᴩȰɁख़ႊ΍ɥᇉȪȲᴫVES ɂछқɂ̷Ͷю᥂Ɂժ᛾ԇʎ˂ʵȻȪȹᩒᄉȨɟȲȟᴩგ۰᥂ᒲӦ೫ҋൡᑤᴩ޴ю᛾ᨢȻɁᣵӦᤆႊȽȼȻጸɒնɢȮɞȦȻȺख़ႊґ᥿ȟɑȬɑȬࢿȟȶȹȗɞᴫ̾ऻɂᴰඒЫԗႊ႕ЅɁ CAD ʁʃʐʪɁʣ˂ʃʁʃʐʪȻȪȹɛɝࢥࢿȢҟႊȨɟɞȦȻȟఙशȨɟɞᴫពᢷ
VES ᩒᄉȾȕȲɝȧ઩߳ȗȲȳȗȲᗵႎίϧᚖႆ‫ޙ۾‬࿁ႎ֪ࣣԩۢᴩஓᬰȧ᜞ᝲȗȲȳȢջաࠎ‫ޙ۾‬᱖ᑨˁఞ෫ᆅሱ޷ច෡Ⱦ৞ពȪɑȬᴫటᆅሱɁˢ᥂ɂ୫᥂ᅁˁஓట‫ޙ‬ᚓળᒾ͢ᇼ‫ޙ‬ᆅሱ៵ᛃӒᦂᴩՀႆᅁȟɦᆅሱӒ਽ᦂȾɛȶȲᴫՎᐎ୫စ
[1] ೘ϧኍ , ᩋែࡺጠˢ , ᱖ᑨጠˢ᤼ , ͅ , ԗႊ 3 ඒЫ႕ЅȾȝȤɞከ࿡َढ઄ҋȻ෥ከୈю᛾ᨢ႕ЅɁʁʩʯʶ˂ʁʱʽ . 3 ඒЫ႕Ѕɽʽʟɫʶʽʃ 94 ផ໮ᝲ୫ᪿ:269-274, 1994.
[2] D.Vinning, R. Shitrin, E. Haponik et al.: VirtualBronchoscopy. Radiology, 193(P) (RSNA Scientific Program):
261, 1994.
[3] K.Mori, J.Hasegawa, J.Toriwaki et al: Extraction andvisualization of bronchus from 3D CT images of lung. Lecture
Notes in Computer Science 905:, 542-548, 1995.
[4] B. Geiger and R. Kikinis: Simulation of Endoscopy. Lecture

Notes in Computer Science, 905: 277-281, 1995.
[5] G.Rubin, C.Beaulieu, V.Argiro, et al: Perspective volume
rendering of CT and MR images: applications for endoscopic
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[6] K.Mori, A.Urano, J.Hasegawa, et al: Virtualized endoscope
system - an application of virtual reality technology to diagnostic
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[7] H.Yoshida. Y.Masutani, O.MacEneaney, et al: Detection ofcolonic polyps in CT colonography based on geometric features.
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[8] K.Mori, Y.Suenaga, J.Toriwaki, et al: A method for tracking
camera motion of real endoscope by using virtual endoscopy
system. Proc. of SPIE, 3978: 122-133, 2000.
[9] J.Helferty, A.Sherbondy, E.Hoffman, et al: Experiments in
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4321 (in print)[10] I.Bricault, G.Ferretti, P.Cinquin, et al: Registration real andCT-derived virtual bronchoscopic images to assist transbronchialbiopsy, IEEE Trans. on Medical Imaging, 17: 703-714, 1998[11] W.Lorensen and H.Cline: Marching Cubes - A High
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[12] M.Levoy: Volume Rendering - Display of Surfaces from
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to the Virtualized Bronchoscopy System. IEEE Transactions onMedical Imaging, 19: 103-114, 2000.
[15] K.Mori, Y.Suenaga, J.Toriwaki, et al: Automated displayof the anatomical name of bronchial branches in a virtual
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(in print)[17] շࠥ୑ูᴩ೘ϧኍᴩఞ෫࣐̹ᴩͅ: ʇʟʒɰɲɬȾɛɞᯚᣱʦʴʯ˂ʪʶʽʊʴʽɺਖ਼ศȻȰɁ͑৊ԇю᛾ᨢʁʃʐʪɋɁख़ႊᴫ᫖‫ފ‬ষ‫ڨ‬ᣮα‫͢ޙ‬੫ᚓᆅሱ‫֖ڨ‬ᴥԗႊ႕Ѕࡾ‫ޙ‬ᆅሱ͢៾୳ᴦᴩMI2000-85: 2001.
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