ේ⪺⣶ᬁ MRI ߦ߅ߌࠆ␹⚻ᩮឬ಴ߩᬌ⸛
೎ᚲ⾆ੳ  ႐ว⟤ᄹሶ  ⿒ဈᱜ᣿  ጊญஜੑ  ਃ๧◊  ᫪ਅᲞ  ⷺᒄ⻀  㧕ᕺኼ✚ว∛㒮 ᡼኿✢ㇱ ᡼኿✢⺖㧕ᕺኼ✚ว∛㒮 ᡼኿✢ㇱ‫ⷐޣ‬ᣦ‫ޤ‬ᬁ㑆ሹㇱߩ⹏ଔߦߪ MR-myelography ߇᦭↪ߢ޽ࠆߣߩႎ๔߇޽ࠅ㧘ㅢᏱ Balanced ࠪ࡯ࠤࡦࠬ㧔ᒰ㒮ߢߪ true steady state free precession㧦true SSFP㧕߇↪޿ࠄࠇߡ޿ࠆ‫ޕ‬Balanced ࠪ࡯ࠤࡦࠬߩାภᒝᐲߪ⚵❱ߩ T1㧘T2 ୯ߩᲧߦࠃࠅ᳿ቯߐࠇ㧘T2/T1 ୯߇Ყセ⊛ᄢ߈ߥ୯ࠍߣࠆ㜑ᶧ߿ⴊᶧ㧘⢽⢌ߥߤߪ㜞ାภࠍ๒ߔࠆ‫ߒ߆ߒޕ‬㧘㜑ᶧ߿ⴊᶧ߇㕖Ᏹߦᒝ޿㜞ାภߣߒߡឬ಴ߐࠇߡઁߩ⚵❱ߩାภ߇⋧ኻ⊛ߦૐਅߔࠆߚ߼㧘エㇱ⚵❱ߩࠦࡦ࠻࡜ࠬ࠻߇ૐߊ㧘ᬁ㑆ሹㇱ߿ߘߩ㆙૏ߢ޽ࠆᬁ㑆ሹᄖㇱߩ⣶ᬁ␹⚻ᩮߩឬ಴ߪ᣿⍎ߢߪߥ޿‫ޕ‬ߘߎߢ㧘エㇱ⚵❱ࠦࡦ࠻࡜ࠬ࠻ߩᡷༀߣᬁ㑆ሹᄖㇱߩ⣶ᬁ␹⚻ᩮࠍ᣿⍎ߦឬ಴ߔࠆߎߣࠍ⋡⊛ߣߒߡ㧘trueSSFP ߣ three dimential-field echo㧔3D-FE_fc㧕ᴺߩ 2 ⒳㘃ߩࠪ࡯ࠤࡦࠬߢ㧘flip angle (FA)ࠍ 10 ᐲ߆ࠄ
60 ᐲ߹ߢ 10 ᐲᲤߦᄌൻߐߖߡ᠟௝᧦ઙߩᬌ⸛ࠍⴕߞߚ‫ޕ‬ࡏ࡜ࡦ࠹ࠖࠕ᠟௝ߦ߅ߌࠆᬌ⸛ߢ㧘⣶ᬁ␹⚻ᩮߩឬ಴⢻ߪାภᒝᐲߩૐਅ߇ዊߐ޿ 3D-FE_fc ᴺߩ FA10ᐲ߇ᦨ߽ఝࠇߡ޿ߚ‫ޕ‬true SSFP ߪ⣄㜑ᶧߩᒝ޿㜞ାภൻߣⴊᵹߩㆃ޿ᬁ૕๟࿐㕒⣂ߩ㜞ାภ߇㓚ኂ㒶ᓇߣߥࠅ㧘⣶ᬁ␹⚻ᩮߩឬ಴ࠍૐਅߐߖࠆⷐ࿃ߦߥߞߚߣ⠨߃ࠆ‫ޕ‬3D-FE_fc ᴺߩ MR-myelography ࠍㅢᏱߩ⣶ᬁ MRI ᬌᩏߦㅊടߔࠆߎߣߢ㧘␹⚻ᩮ㆙૏ㇱ∛ᄌߩ⸻ᢿ₸߇ะ਄ߒ㧘far-out syndrome ߿ᄖ஥ဳᬁ㑆᧼ࡋ࡞࠾ࠕ߇ᄙߊ⷗ߟ߆ࠆน⢻ᕈ߇޽ࠆߣ⠨߃ࠆ‫ޕ‬
Key Words㧦MR ࡒࠛࡠࠣ࡜ࡈࠖ㧘⣶ᬁ␹⚻ᩮ㧘⣶ᬁᬁ㑆ሹ⁜⓰∝‫ޤߦ߼ߓߪޣ‬ᬌ⸛ࠍⴕߞߚ‫ޕ‬ㄭᐕ㧘magnetic resonance imaging(MRI)ߩ৻᠟
௝ᴺߢ޽ࠆ Balanced ࠪ࡯ࠤࡦࠬߪ㧘⿥㜞ㅦߢ㜞޿‫ޣ‬ኻ⽎ߣᣇᴺ‫ޤ‬ାภ㔀㖸Ყ㧔signal-to-noise ratio㧦SNR㧕ࠍᓧࠆߎ૶↪ᯏེߪ㧘TOSHIBA ␠⵾ 1.5 T MRI ⵝ⟎㧦ߣ߇ߢ߈ࠆߚ߼ߦ㧘ߐ߹ߑ߹ߥ㗔ၞߢ⥃ᐥ೑↪ߐࠇ

EXCELART Vantage XGV F2-Edition Ver.8.02 ߣߡ޿ࠆ‫ޕ‬ᬁ㑆ሹㇱߩ⹏ଔߦߪ MR-myelography ߇᦭⣄ᬁ↪ࠦࠗ࡞㧦CTL array coil ࠍ↪޿ߚ‫⎇ᧄޕ‬ⓥߦ↪ߢ޽ࠆߣߩႎ๔߇޽ࠅ㧘ㅢᏱ Balanced ࠪ࡯ࠤࡦหᗧ߇ᓧࠄࠇߚஜᏱࡏ࡜ࡦ࠹ࠖࠕ 4 ฬ(ᐔဋ 29.8 ᱦ)ࠬ㧔ᒰ㒮ߢߪ true steady state free precession㧦trueࠍኻ⽎ߣߒߡ㧘true SSFP ߣ 3D-FE_fc ᴺߩ 2 ⒳㘃SSFP㧕߇↪޿ࠄࠇߡ޿ࠆ‫ޕ‬Balanced ࠪ࡯ࠤࡦࠬߩ

ߩࠪ࡯ࠤࡦࠬߢ㧘flip angle (FA)ࠍ 10 ᐲ߆ࠄ 60 ᐲାภᒝᐲߪ⚵❱ߩ T1㧘T2 ୯ߩᲧߦࠃࠅ᳿ቯߐࠇ㧘߹ߢ 10 ᐲᲤߦᄌൻߐߖߡ coronal ᢿ㕙ߦߡ᠟௝ࠍⴕ

T2/T1 ୯߇Ყセ⊛ᄢ߈ߥ୯ࠍߣࠆ㜑ᶧ߿ⴊᶧ㧘⢽⢌ߞߚ‫ޕ‬ߥߤߪ㜞ାภࠍ๒ߔࠆ‫ߒ߆ߒޕ‬㧘㜑ᶧ߿ⴊᶧ߇㕖Ᏹtrue SSFP ߩ FA એᄖߩ᠟௝ࡄ࡜ࡔ࡯࠲ߪ㧘ߦᒝ޿㜞ାภߣߒߡឬ಴ߐࠇߡઁߩ⚵❱ߩାภ߇⋧TR:14.7 ms㧘TE:7.2 ms㧘ࠬ࡜ࠗࠬෘ㧦2.0 mm㧘ኻ⊛ߦૐਅߔࠆߚ߼㧘エㇱ⚵❱ߩࠦࡦ࠻࡜ࠬ࠻߇ૐ

matrix㧦224×224㧘field of view (FOV)㧦30×30 cmߊ㧘ᬁ㑆ሹㇱ߿ߘߩ㆙૏ߢ޽ࠆᬁ㑆ሹᄖㇱߩ⣶ᬁ␹㧘ട▚࿁ᢙ㧦2㧘⢽⢌ᛥ೙ᴺ㧦CHESS ᴺ㧘ࡃࡦ࠼᏷⚻ᩮߩឬ಴ߪ᣿⍎ߢߪߥ޿ 1,2)‫ޕ‬⣶ᬁ␹⚻ᩮߩ⿛ⴕ߿

㧦244 Hz/pixel㧘ࠬ࡜ࠗࠬᨎᢙ㧦25 ᨎ㧘᠟௝ᤨ㑆㧦ᄖ஥∛ᄌࠍ᣿⍎ߦឬ಴ߔࠆߎߣߪ⥃ᐥ⊛ߦ᦭↪ߢ޽2 min 58 s ߣߒߚ‫ޕ‬ࠅ㧘⣶ᬁ␹⚻ᩮ∝ߦኻߔࠆᚻⴚᚑ❣ߦ߽ᓇ㗀ࠍ෸߷

3D-FE_fc ᴺߩ FA એᄖߩ᠟௝ࡄ࡜ࡔ࡯࠲ߪ㧘ߔ 3,4)‫ߢߎߘޕ‬㧘エㇱ⚵❱ࠦࡦ࠻࡜ࠬ࠻ߩᡷༀߣᬁ㑆

TR:34.8ms㧘TE:10ms㧘ࠬ࡜ࠗࠬෘ㧦2.0 mm㧘matrixሹᄖㇱߩ⣶ᬁ␹⚻ᩮࠍ᣿⍎ߦឬ಴ߔࠆߎߣࠍ⋡⊛ߣ

㧦224×224㧘field of view (FOV)㧦30×30 cm㧘ട▚ߒߡ㧘true SSFP ߣ three dimential-field echo࿁ᢙ㧦1㧘⢽⢌ᛥ೙ᴺ㧦WET ᴺ㧘ࡃࡦ࠼᏷㧦122

㧔3D-FE_fc㧕ᴺߩ 2 ⒳㘃ߩࠪ࡯ࠤࡦࠬߢ᠟௝᧦ઙߩ

Hz/pixel㧘ࠬ࡜ࠗࠬᨎᢙ㧦25 ᨎ㧘᠟௝ᤨ㑆㧦3 min 31－ 39 －s ߣߒߚ‫ޕ‬ߪ޽ߞߚ߇㧘FA ᄌൻߦ߅ߌࠆ␹⚻ᩮ㧘ᬁ㑆᧼ߩࠦエㇱ⚵❱ࠦࡦ࠻࡜ࠬ࠻ߣ⣶ᬁ␹⚻ᩮߩឬ಴⢻ࠍᬌࡦ࠻࡜ࠬ࠻ߪ߶߷ᮮ߫޿㧘⣺⣶╭ߩࠦࡦ࠻࡜ࠬ࠻ߪ⸛ߔࠆߚ߼ߦ㧘ࡏ࡜ࡦ࠹ࠖࠕ↹௝ࠍ↪޿ߡฦ⚵❱ࠦFA ߇ᄢ߈ߊߥࠆߣ⧯ᐓૐਅߒߚ‫ޕ‬3D-FE_fc ᴺߢߪࡦ࠻࡜ࠬ࠻⹏ଔߣ⣶ᬁ␹⚻ᩮߩାภᒝᐲ᷹ቯ߅ࠃ߮㧘⣄㜑ᶧߩࠦࡦ࠻࡜ࠬ࠻ߪ FA=10 ᐲ߆ࠄ 30 ᐲߩ㑆⸻≮᡼኿✢ᛛᏧߦࠃࠆⷞⷡ⹏ଔࠍⴕߞߚ‫ࡦࠦ❱⚵ޕ‬ߢᕆỗߦૐਅߒߚ‫ߚ߹ޕ‬㧘␹⚻ᩮ㧘ᬁ㑆᧼㧘⣺⣶╭࠻࡜ࠬ࠻᷹ቯߪ⣄㜑ᶧ㧘␹⚻ᩮ㧘ᬁ㑆᧼㧘⣺⣶╭㧘ߩࠦࡦ࠻࡜ࠬ࠻ߪࡏ࡜ࡦ࠹ࠖࠕ㑆ߩ߫ࠄߟ߈߇ᄢ߈

ᬁ૕ߦߘࠇߙࠇ 5 ୘ߩ ROI ࠍ⸳ቯߒ㧘ߘࠇߙࠇߩା߆ߞߚ‫ޕ‬ภߩᐔဋ୯ࠍ᷹ቯߒߚ㧔࿑ 1㧕‫ ߩߢߎߎޕ‬ROI ߩᄢFA ᄌൻߦ߅ߌࠆ⣶ᬁ␹⚻ᩮߩㄭ૏߆ࠄ㆙૏ߦ߆

߈ߐߪ 16 pixel ߣߒߚ‫↹ߡߒߘޕ‬௝਄㧘ାภᒝᐲߩ

ߌߡߩᐔဋାภᒝᐲࠍ࿑ 4 ߦ␜ߔ‫ޕ‬true SSFP ߢߪૐ޿⣄ᬁߦኻߔࠆߘߩઁߩ⚵❱ࠦࡦ࠻࡜ࠬ࠻Ყࠍએ⣶ᬁᬁ㑆ሹㇱߢᕆỗߦାภᒝᐲ߇ૐਅߒ㧘ᧃ᪳߳ะਅߩᑼߢ▚಴ߒߚ‫ޕ‬߆߁ߦᓥ޿ߐࠄߦାภᒝᐲ߇ૐਅߒߚ‫ߚ߹ޕ‬㧘ዊߐࠦࡦ࠻࡜ࠬ࠻=|(SIT㧙SIBG)㨨/㨧 (SIT+SIBG)/2㨩

޿ FA ߶ߤ⣶ᬁ␹⚻ᩮߩାภᒝᐲߪ㜞߆ߞߚ‫ޕ‬ߎߎߢ㧘SIT ߪฦ⚵❱ߩᐔဋାภᒝᐲ㧘SIBG ߪ⣄ᬁ

3D-FE_fc ᴺߪ㧘ዊߐ޿ FA ߢߪ⣶ᬁ␹⚻ᩮㄭ૏߆ࠄߩᐔဋାภᒝᐲߢ޽ࠆ‫ޕ‬㆙૏ߦ߆ߌߡૐਅ߇⷗ࠄࠇߚ߇㧘true SSFP ߦᲧߴ ᰴߦ⣶ᬁ␹⚻ᩮߩାภᒝᐲ᷹ቯߪ㧘⣶ᬁ␹⚻ᩮߩߡାภᒝᐲߩૐਅߪዊߐ߆ߞߚ‫ޕ‬ㄭ૏ㇱ㨪㆙૏ㇱߦ߆ߌߡ 8 ࡨᚲߦ ROI ࠍ⸳ቯߒ㧘ߘฦࡏ࡜ࡦ࠹ࠖࠕߩ↹௝ࠍ࿑ 5㧘6 ߦ଀␜ߔࠆ‫ޕ‬trueߩᐔဋାภᒝᐲࠍ᷹ቯߒߚ‫ ߩߢߎߎޕ‬ROI ߩᄢ߈ߐSSFP ߢߪᄢ߈ߥ FA ߢ⣄㜑ᶧߩାภᒝᐲ߇㜞ߊ㧘

ߪ 16 pixel ߣߒߚ‫ޕ‬⣶ᬁ␹⚻ᩮߩឬ಴⢻ߣエㇱ⚵❱ࠦࡦ࠻࡜ࠬ࠻߇ૐਅߒߚ‫ޕ‬FA ࠍ 30 ᐲઃㄭ߹ߢዊߐߊߔࠆߣ⣄㜑ᶧߩା‫⚿ޣ‬ᨐ‫ޤ‬ภࠍᛥ߃ࠆߎߣ߇ߢ߈㧘⣶ᬁ␹⚻ᩮߩឬ಴⢻ߣエㇱฦࡏ࡜ࡦ࠹ࠖࠕߦ߅ߌࠆ true SSFP ߩ⣄ᬁߦኻ⚵❱ࠦࡦ࠻࡜ࠬ࠻߇ᡷༀߒߚ‫ޕ‬3D-FE_fc ᴺߢߪ㧘ߔࠆฦ⚵❱ߩࠦࡦ࠻࡜ࠬ࠻ࠍ࿑ 2 ߦ㧘3D-FE_fc ᴺFA ߇ᄢ߈ߊߥࠆߦߟࠇߡ⣄㜑ᶧߩାภᒝᐲ߇᣿ࠄߩ⣄ᬁߦኻߔࠆฦ⚵❱ߩࠦࡦ࠻࡜ࠬ࠻ࠍ࿑ 3 ߦ␜ߔ߆ߦૐਅߒ㧘FA=40 ᐲએ਄ߢエㇱ⚵❱ࠦࡦ࠻࡜ࠬ࠻

‫ޕ‬true SSFP ߢߪ FA ߇ᄢ߈޿߶ߤ⣄㜑ᶧߩࠦࡦ࠻

߇ૐਅߒߚ‫ޕ‬ᬁ㑆ሹᄖㇱߩ⣶ᬁ␹⚻ᩮߩឬ಴⢻ߪዊ࡜ࠬ࠻߇਄᣹ߒߚ‫ࠕࠖ࠹ࡦ࡜ࡏߚ߹ޕ‬㑆ߩ߫ࠄߟ߈

ߐ޿ FA ߇ఝࠇߡ޿ߚ‫ޕ‬

࿑ 1 ฦ⚵❱ߦ߅ߌࠆ ROI ⸳ቯ⣄㜑ᶧ㧘␹⚻ᩮ㧘ᬁ㑆᧼㧘⣺⣶╭㧘ᬁ૕ߦߘࠇߙࠇ 5 ୘ߩ ROI ࠍ⸳ቯߒ㧘ᐔဋ୯ࠍ▚಴⤌⧊㛫 ᐃἲ⬨᳝䛻ᑐ䛩䜛ྛ⤌⧊䛾ಙྕᙉᗘ䜢 ᐃࢥࣥࢺࣛࢫࢺ

( SIT  SIBG )( SIT  SIBG ) / 2

SIT : ྛ⤌⧊ࡢᖹᆒಙྕ್SIBG : ⬨᳝ࡢᖹᆒಙྕ್

－ 40 － ࿑ 2 true SSFP ߦ߅޿ߡฦࡏ࡜ࡦ࠹ࠖࠕ↹௝ߩ FA ᄌൻߦࠃࠆฦ⚵❱ࠦࡦ࠻࡜ࠬ࠻ᄌൻ

true SSFPἲ䝁䞁䝖䝷䝇䝖䝁䞁䝖䝷䝇䝖䝪䝷䞁䝔䜱䜰A䝪䝷䞁䝔䜱䜰C䝪䝷䞁䝔䜱䜰D䝁䞁䝖䝷䝇䝖FA䝁䞁䝖䝷䝇䝖

FAFAFA ࿑ 3 3D-FE_fc ᴺߦ߅޿ߡฦࡏ࡜ࡦ࠹ࠖࠕ↹௝ߩ FA ᄌൻߦࠃࠆฦ⚵❱ࠦࡦ࠻࡜ࠬ࠻ᄌൻ

3D-FE_fcἲ䝪䝷䞁䝔䜱䜰B䝁䞁䝖䝷䝇䝖䝁䞁䝖䝷䝇䝖䝪䝷䞁䝔䜱䜰A

䝪䝷䞁䝔䜱䜰C䝪䝷䞁䝔䜱䜰D䝁䞁䝖䝷䝇䝖FA䝁䞁䝖䝷䝇䝖FAFAFA－ 41 － ࿑ 4 true SSFP ߣ 3D-FE_fc ᴺߦ߅޿ߡ FA ߩ㆑޿ߦࠃࠆ⣶ᬁ␹⚻ᩮㄭ૏㨪㆙૏ߦ߆ߌߡߩାภᒝᐲᄌൻ⭜᳝⚄⤒᰿䛾ಙྕᙉᗘ⭜᳝⚄⤒᰿㏆఩䡚㐲఩䛻䛛䛡䛶ROI䜢䛸䜚䚸䛭䛾ᖹᆒಙྕᙉᗘ䜢ィ

ᖹᆒಙྕᙉᗘ

ᖹᆒಙྕᙉᗘ

true SSFP

㏆఩

㐲఩

㏆఩

㐲఩

 ࿑ 5 true SSFP ߩ FA ᄌൻߦ߅ߌࠆ⣶ᬁ↹௝

true SSFP
FA=10

FA=20

FA=30

FA=40

FA=50

FA=60

－ 42 － ࿑ 6 3D-FE_fc ᴺߩ FA ᄌൻߦ߅ߌࠆ⣶ᬁ↹௝

FE3D_fcἲ
FA=10FA=20

FA=30

FA=40

FA=50FA=60‫ޣ‬⠨ኤ‫ޤ‬ߢᕆỗߦ⣶ᬁ␹⚻ᩮߩାภᒝᐲ߇ૐਅߒߚ‫ߪࠇߎޕ‬⣄ᬁ࡮⣄㜑ߦ߅ߌࠆ MRI ᬌᩏߪ㧘ߘߩ㜞޿⚵❱⣶ᬁᬁ㑆ሹㇱߢ⣶ᬁ␹⚻ᩮ߇ 2 ᧄߩ␹⚻▵ߦಽ߆ࠇࠦࡦ࠻࡜ࠬ࠻߆ࠄ㕖ଚⷅ⊛ߥᬌᩏᴺߣߒߡ᏷ᐢߊ೑ߚߚ߼ߣ⠨߃ࠆ‫ߚ߹ޕ‬㧘true SSFP ߪ⣄㜑ᶧߩᒝ޿↪ߐࠇߡ߅ࠅ㧘⣶ᬁ∔ᖚߩ⸻ᢿߦኻߒߡ߽ᔅⷐਇน㜞ାภൻߣⴊᵹߩㆃ޿ᬁ૕๟࿐㕒⣂ߩ㜞ାภ߇㓚ኂᰳߥᬌᩏߣߥߞߡ޿ࠆ‫ߒ߆ߒޕ‬㧘⃻࿷ߩ MRI ߢߩ㒶ᓇߣߥࠅ㧘⣶ᬁ␹⚻ᩮߩឬ಴ࠍૐਅߐߖࠆⷐ࿃ߦㅢᏱ᠟௝ߢߪ␹⚻ᩮߩឬ಴ߦ㒢⇇߇޽ࠆߣߩ⷗⸃߽ߥߞߚߣ⠨߃ࠆ‫ޕ‬3D-FE_fc ᴺߪߎࠇࠄߩ㜞ାภㇱ

5~7)‫߼ߚߩߘޕ‬㧘エㇱ⚵❱ࠦࡦ࠻࡜ࠬ࠻ߩᡷༀ

ಽߦኻߔࠆ໧㗴ὐߩᓇ㗀߇ዊߐߊ㧘⦟ᅢߥエㇱ⚵❱ߣ ⣶ ᬁ ␹ ⚻ ᩮ ߩ ㆙ ૏ ㇱ ឬ ಴ ࠍ ⋡ ⊛ ߣ ߒ ߡ 㧘 trueࠦࡦ࠻࡜ࠬ࠻ߣ⣶ᬁ␹⚻ᩮ㆙૏ㇱ߇ឬ಴น⢻ߣߥߞ

SSFP ߣ 3D-FE_fc ᴺߩ 2 ⒳㘃ߩࠪ࡯ࠤࡦࠬߢ᠟௝ߚ‫߼ߚߩߘޕ‬㧘3D-FE_fc ᴺߩ MR-myelography ࠍ᧦ઙߩᬌ⸛ࠍⴕߞߚ‫ޕ‬ㅢᏱߩ⣶ᬁ MRI ᬌᩏߦㅊടߔࠆߎߣߢ㧘␹⚻ᩮ㆙޽ࠆࡏ࡜ࡦ࠹ࠖࠕ᠟௝ߦ߅ߌࠆᬌ⸛ߢ㧘⣶ᬁ␹⚻ᩮߩ૏ㇱ∛ᄌߩ⸻ᢿ₸߇ะ਄ߒ㧘far-out syndrome ߿ᄖឬ಴⢻ߪାภᒝᐲߩૐਅ߇ዊߐ޿ 3D-FE_fc ᴺߩ஥ဳᬁ㑆᧼ࡋ࡞࠾ࠕ߇ᄙߊ⷗ߟ߆ࠆน⢻ᕈ߇޽ࠆߣ

FA=10 ᐲ߇ᦨ߽ఝࠇߡ޿ߚ‫ߪࠇߎޕ‬ฦ⚵❱ߩ❑✭๺⠨߃ࠆ‫ޕ‬ߩ㆑޿㧘ߔߥࠊߜ 3D-FE_fc ᴺߢߪ FA ߇ዊߐ޿߶ߤ❑✭๺߇ᣧߊ࿁ᓳߔࠆߩߢ㧘⣄㜑ᶧ߅ࠃ߮⣶ᬁ␹⚻ᩮߩࠦࡦ࠻࡜ࠬ࠻߇㜞ߊߥߞߚߣ⠨߃ࠆ‫৻ޕ‬ᣇ㧘
true SSFP ߪቯᏱ⁁ᘒㇱߩ࠺࡯࠲ࠍ↪޿ࠆߚ߼㧘⍴ᤨ㑆ߢ heavy T2 ᒝ⺞௝ࠍᓧࠆߎߣ߇ߢ߈㧘ߘߩ↹௝ࠦࡦ࠻࡜ࠬ࠻ߪ T2/T1 ୯ߦଐሽߔࠆ‫ޕ‬true SSFP
ߩ‛ℂ⹏ଔ߅ࠃ߮ⷞⷡ⹏ଔߦ߅޿ߡ㧘⣶ᬁᬁ㑆ሹㇱ

－ 43 －‫ޣ‬ᢥ₂‫ޤ‬1) 㕍↰ᵗ৻㧦⣶ᬁᬁ㑆ሹౝ⁜⓰∝ߦኻߔࠆ MRI ߣMR ࡒࠛࡠߩ⸻ᢿ♖ᐲ㧚ᢛᒻᄖ⑼ 61(1):83-86,20102) ၳ ᱜ᣿㧘⍹੉ᘮ৻㧘ጊญ ᥏㧘ઁ㧚㧦⣄㜑ߩbalanced sequence MRI㧘MR myelography㧚⣄ᬁ⣄㜑 21(2)㧦123-128, 20083) Ross JS. Newer sequence for spinal MRimaging㧦smorgasboad or succotash of acronysm?.
AJNR Am J Neuroradiol 20(3)㧦361-373, 19994) ੑ㓏ၴ℉਽㧘⚬㊁ᘅ৻㧦⣶ㇱ⣄ᩇ▤⁜⓰ߩౣᚻⴚߩේ࿃ߣ revision ᚻᛛ㧚⣄ᬁ⣄㜑 22(7)㧦835-839,20095) ศᧄਃᓼ㧘ጤἑጪੱ㧘੗↰๺ഞ㧘ઁ㧦ᄖ஥ဳ⣶ᬁᬁ㑆᧼ࡋ࡞࠾ࠕߩ⸻ᢿߣౝⷞ㏜ਅᬁ㑆᧼ಾ㒰ⴚ㧚ᢛᒻ࡮ἴኂᄖ⑼ 52(9)㧦1071-1076, 20096) ጊ↰ ብ㧘ศ↰ቬੱ㧘ᧁᚭ⟵ᾖ㧘ઁ㧦⣄㜑␹⚻ᩮ
ߩ 3 ᰴర MRI㧚⣄ᬁ⣄㜑 21(2)㧦115-121, 20087) ጤፒ ඳ㧘ศ↰ቬੱ㧘ጊ↰ ብ㧘ઁ㧦Far-out
syndrome ߩ ⸻ ᢿ ᴺ 㧚 ᢛ ᒻ ࡮ ἴ ኂ ᄖ ⑼  52(9) 㧦1081-1087, 20098) ⼾ᩮ⍮᣿㧘↵Ỉᦺⴕ㧘ᷰㄝᷕ਽㧦⣶ᬁᬁ㑆ሹ⁜⓰ߩ↹௝⸻ᢿ㧚⣄ᬁ⣄㜑 23(5)㧦515-520, 2010

－ 44 －