OžͶILpǭΏ

Three Dimensional Medical Imaging

- Clinical Usefulness and Current Limitations -


caA@Kazuhiro Katada, M.D.

cqƦΌwqƦw

Fujita Health University, School of Health Sciences


PDꭦ I QDËpOžȶ I RDËpOžΏ_

1) ËtOž᭎] I 2)ԫf[^ I 3)þɶo

4)gD`V~Ԫ[V I 5) I 6)Ͷ]

SD


AuXgŰNgF@ѧNËpOžiƸ}ʭDÐ𞭁CȭͶILpǭmҭЭЪC㜶ͶpÐ{Ơ˭DCËpOžZpCK魂íΏΦ٠᭎DCOffȶLpǭ孢UפֿCԫf[^CAvɰP[VCn[hEGA魂_OffΏ_孢l@ڭD

L[[hFOžffCwɰJѰXLCTC{ɰ[f[^C{ɰ[԰_ɰO

Abstract: Despite recent rapid progress of medical imaging, three-dimensional (3D) imaging has not yet to be a diagnostic modality of choice in most of the clinical fields. This is because that current 3D imaging still possesses number of limitations and hazards in both technical and clinical aspects. In this paper, current clinical applications of 3D imaging were reviewed, and the limitations of 3D imaging technique in various medical fields were discussed.

Key words: Three-dimensional imaging, Helical scanning CT, Volumetric data, Volume rendering


PDꭦ

ѧNCCTCMRI魂ƦOIvλ᭎ZpBCOžZpÐȭCƦOž㲭Ieͭ筸DÐ𞭁CȭͶILpǭmҭÐ筀DCOž᭎ËtЭɜɫʭC㜶ͶpÐ{Ơ˭DRCËpOžZpCK魂θЭíΏcҭʭDCOËpžffȶUפֿCͶË_Ώ_孢l@ڭD

QDËpOžȶ

OžffLpǭفΪɜFCeڒa쭃᭎ڏpxŽ㭡DЭ`OþSڏpxŽpCp԰xѭBlϭD

Fig.1@ɍGƆ

ҭѧNClaser lithography魂Όfѭ㟭ҭCpO㢭pWDÐCN}­yʭɂnOffʭDɂnC΢eن^٭RgŰXg㲭ǭC\΢lOffKDЭLpǭFCþ]‡ڭffʭD­OIhchʭ]‡ڭ`oC_IOžffKD

Fig.2@O‡

CͶKmiʭꭵʭjRCż_lϭDξÐC󭮭魎\΢RgŰXg٭ЪCɅSþɶoeͭʭ筸Cξ㖭CffE̶\΢Ic­dv魱CξOpȶفΌΏ_ʭ筸f[^ھﭻCwɰJѰXLCT㟭NɰAҭ㭡D魒CNɰjJѰj[YʭCf[^ھ㲪EO\­eͭCSЭ魢COff^ڏpxŽpȭdvlϭD

RDËpOžΏ_

1) ËtOž᭎]

ZpIΏ_OCȶËtOž᭎pƬ孢lϭDѧN魏ݭiʭꭢϪCËtCЭƟËOž᭎ھgCÐݶrIWԲ㲭魢Dȭ_⭮㭡ChfSff㲭\ʭCOžϭ魢hChPҭžffËf㻭魩O\΢\zǭhۭʭDÐ𞭁OËCTƟËDIʭDRCƟËҭtBѰ㜶Ѯ󭮭뭵COËOҭάϭDƟË筀Ëpž㲭IhffhʭCOË筀hOIIɰGe[V㲭hȭЭdvʭD_OžCϭȭЭVffɆ魢ٽCȭکʭxOËj[Yٽvϭ۪DխCËtƐȭobNOŰEh筀Ožȭ᭎ھg魎Lҭ׭ǭʭD

2)ԫf[^

OžffZpIΏ_ξÐCO魎f[^ʭD

Fig.R@ԫf[^ᭃOžžşP

Ð歃٠f[^iCxCS/NCA[`t@Ng魂vѪƷB魢ٽθDЭԟTvɰOԪ[gf歃䊭Όǭ筀Cf[^ǭխCpartial volume effectΌҭխխΌǭԫÚ筀D\˭ԿXŰCXЭCԟ\ԟҭխwꭻKvʭDŊX0.8mmXŰCXCTu᭎CΌԟ\ԟ㲭D

Fig.S@ԿXŰCXɂ`o\

Fig.T@0.8mmXŰCXOi_oɂj

Ožـ\­伭۶ԽڭΌǭΏ_ʭDÐ歃O\zrCþɶoGŪ[CfɰOŧ⚭Կ歃Cԫž׶Ð䭻DCOpf[^涒ffpž魏I[o[TvɰOҭKvʭD

ԫf[^xꭂxW׭ǭʭۭH@@[`ѰɰAɰeBԩnԲϭClɫoƦwCžftԪ[Ԫ[gҭխ魢فɔ԰xѭWҭ׭ǭʭD魒C}gɰbNX2000x2000Cԟǭf[^zCvλ12[16rbgC\8rbgCžٽb30tԪ[]D_CȶHwI\ꭁꭱXybN]ޭ׭Э魢CЭЭȶf[^|Is\𻭁ʭCFKvʭD٥فŭϭƟË^ÐÚCOžff死CfiԫžjЭ魢vD㭡ۭff[^ݭCԫf[^嶔ݭ׭\\Ož\zҭ魍C^Ožff\魎vDڏpxŽ孢lC׭ɂE_oݭɆU\΢ـȭ]Բۭ魢D

ԫf[^ɅCBeiBj@HvCeڒA[`t@NgفΌ}ϭdvʭDCԫf[^ɆڒޭdvCȶCCɂC_o魂ffEڏp󭵭Kvҭ\΢SPÐ_ɰeB`oǭ魢_ΏʭD_ɅCѧNuڒ_ɰeBždٽժvڭCWnÐvҭխŧ⚭ԑ᭮CEtԪ[ⷭ魂伭׭ΌΏ_cҭDЭMRIڴsÐǭNÚ᭎їIcCӭpl魎CɨSҭ٢㕭ʭDÐ𞭁CPÐ_ɰeBǭθЭ㲭׭ЪC_ɰeBک`o\şPw׭ǭ魢D

3)þɶo

Ožpȭ筀魍oҭȭChٓ񭃭筀ž魎hChҭCMpǭ魢hԲۭʭDɅSþɶoŧ⚭CٓʭٓǪEԶiǭl魂j٦EҭD

Fig.U@ElƠ⏭Ož

ڢþɶoOžٓȭʭ筀فΌΏ_ʭCθЭѺ񭃭θЭڭҭǭD٭RgŰXg\΢ݶCIڏ@㲭魢Dþɶo{Ҷ\΢C\΢CʭȭE⏭ʭCʭžff{ۭ׭fѪDOCuþɶohe԰|[gݶέЭËsתhʭvڌ⣭ǭC魒ChnËtUwIEawImɔ̭þɶoAѰSɰYKv魱hDۭAѰSɰY㲭CƐËtËwIE@ICŭ筀þɶos筀sЭ׭ǭʭ۪DCmȶËtɨS΅ۭAѰSɰY\zs\魢CeËtɶoݶCeɰWFgAѰSɰYJЭ[\lϭD

4)gD`V~Ԫ[V

٠OڏpV~Ԫ[V㭃فΌΏ_CeƦھõʭD˭ڏpڏZCa䭃B᭎ЭvʭCٽCaΰھꭖҶݶڪiƯْj᭎۰Av٪[`HʭDθЭٽCҶ𻭅NPف˭CҶrʭҭխaΰ䭃B᭎D^ڏpAv٪[`ݰV~Ԫ[gۭ᭐CƦ`ݭ歐魢D_CѧNe`ɅS٭ʭCΌ]ȭʭDHΌ伭`ڏ@mCOڏpV~Ԫ[V㭃ȶفɜҭʭD

5)

cΌCOžff٠فΌΏ_Ð孁ʭDЭf[^fxC{ɰ[԰_ɰO΋\᭎٭ĭAѰSɰYθpҭ子CΌʭDCڏpV~Ԫ[V㭃Cȭ{_XCƯْC`魂žHpgŰCEAhEGŪ[itrial and errorjʭlϭCžٓȪ^\ϭɰAѰ^CǭCƉ֭魢K{ԶԲ筀D

ȭCΌf[^٭­[NXe[V㭃]᭎lbg[NZpCdv٥Ð孁ʭD

6)Ͷ]

ѧN}­WCOžffËŕÐ歩Lڗ㟭ԲϭCs\𻭮Բ㲭魢DRCRs[^xŽAhoe[WݪC\ԋԟmǭ魢DԋCprospectiveCrandomizedCdouble-blinded studyCȭԿqIEwI᭎wꭻKv魑۪DȭCZͶθXg԰XҭgpǭZk᭎C魃]D

SD

鶋COËpžffȶΏ_孢_ǭD

]êCOžffуIgËtCHwȶ]CHwۭ뭵vѪTϭǭD{eq׭ԩ魩Cȶ٢㕭vѪθЪCHwIԩn᭐h\_hάϭ魢D

Ð𞭁ËۭCḘ̈pc[ѭiCȭNEƦɅCʭڏpɒѕʭsi٭ivѪҭRʭ筸DOËpɅCfUCEzԲۭCfžCTVR}[VѪC歀ŮpTVQ[xݭ筀𻭻ʭDËpOžCȭ{Բ筀CݭꭎŒ᭎i㲭RʭDwɰJѰXL㭃{iIpȭn筸٠CoRϭRgԪ[jOݶIϪC٭wonǭʭDo𙭻٭CȭԑfEËŧԑ魂ɑǭ٭RʭD٭SуCŊXϭhɾԁh筀C{w׭W`ϭʭlϭD


ԣ

1. caAFwɰJѰXLCTSRžffȶΏ_D Medical Imaging Technology, 13(3):208-214, 1995.

2. GqCeÐYFMRIžmɔ̭ک㨰ZOe[V㭮3\ϪDËpdqƦHwD25(1)1-7, 1987.

ƾ㻭