腦靜脈竇血栓之診斷概要課件

腦靜脈竇血栓之診斷概要腦靜脈竇血栓之診斷概要1

CausesofandPredisposingFactorsforCerebralVenousThrombosisCausesofandPredisposingFa2ClinicalFeaturesofCerebralVenousThrombosisClinicalFeaturesofCerebral3腦靜脈竇血栓之診斷概要課件4腦靜脈竇血栓之診斷概要課件5Acutestage(0–5days)Intheacutestageofthrombusformation,thesignalispredominantlyisointenseonT1WIandhypointenseonT2WIbecauseofdeoxyhemoglobininredbloodcellstrappedinthethrombusAcutestage(0–5days)Inthe6腦靜脈竇血栓之診斷概要課件7Subacutestage(6–15days)Inthesubacutestageofthrombusdevelopment，thesignalispredominantlyhyperintenseonbothT1WIandT2WIbecauseofmethemoglobininthethrombusSubacutestage(6–15days)In8腦靜脈竇血栓之診斷概要課件9

Chronicstage(>15-day-old)thesignalinachronicthrombusistypicallyisointenseorhyperintenseonT2WIandisointenseonT1WISinusenhancementispresumablysecondarytoanorganizedthrombuswithintrinsicvascularizationaswellastoslowflowinduralandintrathrombuscollateralchannelsChronicstage(>15-day-old)t10腦靜脈竇血栓之診斷概要課件11主要CT征象主要CT征象12正常靜脈竇CT值？正常靜脈竇CT值？13正常顱腦組織CT值腦灰質(zhì)CT值34-39Hu腦白質(zhì)CT值26-29Hu靜脈竇CT值40-60Hu正常顱腦組織CT值腦灰質(zhì)CT值34-39Hu14直接征像？直接征像？15束帶征（索條征）束帶征（索條征）16高密度三角征高密度三角征17直竇及大腦大靜脈血栓直竇及大腦大靜脈血栓18腦靜脈竇血栓之診斷概要課件19深靜脈血栓:基底靜脈及直竇密度增高深靜脈血栓:基底靜脈及直竇密度增高20高密度血栓占25%？高密度血栓占25%？21雙側(cè)橫竇及右側(cè)乙狀竇血栓？雙側(cè)橫竇及右側(cè)乙狀竇血栓？22右側(cè)橫竇血栓充盈缺損右側(cè)橫竇血栓充盈缺損23EmptydeltasignEmptydeltasign24腦靜脈竇血栓之診斷概要課件25？？26PseudoemptydeltasignPseudoemptydeltasign27ArachnoidgranulationsArachnoidgranulations28間接征像靜脈性梗死、水腫、靜脈性出血間接征像靜脈性梗死、水腫、靜脈性出血29腦靜脈竇血栓之診斷概要課件30左側(cè)額頂葉靜脈性腦梗死伴靜脈性腦出血左側(cè)額頂葉靜脈性腦梗死伴靜脈性腦出血31腦靜脈竇血栓之診斷概要課件32右側(cè)額頂葉靜脈性腦出血右側(cè)額頂葉靜脈性腦出血33動(dòng)脈性腦出血?jiǎng)用}性腦出血34紫紺型心臟?。ǚ迨纤穆?lián)癥），高血紅蛋白血癥？紫紺型心臟?。ǚ迨纤穆?lián)癥），高血紅蛋白血癥？35總結(jié)總結(jié)36主要CT征像直接征像：束帶征（索條征）、高密度三角征；CTV見充盈缺損或空三角征間接征像：腦腫脹；腦水腫；靜脈性腦梗塞；靜脈性腦出血等。主要CT征像直接征像：束帶征（索條征）、高密度三角征；CT37主要MRI征象流空影消失（T2WI）增強(qiáng)掃描：充盈缺損MRV靜脈或靜脈竇不顯影主要MRI征象流空影消失（T2WI）38謝謝！謝謝！39腦靜脈竇血栓之診斷概要腦靜脈竇血栓之診斷概要40

CausesofandPredisposingFactorsforCerebralVenousThrombosisCausesofandPredisposingFa41ClinicalFeaturesofCerebralVenousThrombosisClinicalFeaturesofCerebral42腦靜脈竇血栓之診斷概要課件43腦靜脈竇血栓之診斷概要課件44Acutestage(0–5days)Intheacutestageofthrombusformation,thesignalispredominantlyisointenseonT1WIandhypointenseonT2WIbecauseofdeoxyhemoglobininredbloodcellstrappedinthethrombusAcutestage(0–5days)Inthe45腦靜脈竇血栓之診斷概要課件46Subacutestage(6–15days)Inthesubacutestageofthrombusdevelopment，thesignalispredominantlyhyperintenseonbothT1WIandT2WIbecauseofmethemoglobininthethrombusSubacutestage(6–15days)In47腦靜脈竇血栓之診斷概要課件48

Chronicstage(>15-day-old)thesignalinachronicthrombusistypicallyisointenseorhyperintenseonT2WIandisointenseonT1WISinusenhancementispresumablysecondarytoanorganizedthrombuswithintrinsicvascularizationaswellastoslowflowinduralandintrathrombuscollateralchannelsChronicstage(>15-day-old)t49腦靜脈竇血栓之診斷概要課件50主要CT征象主要CT征象51正常靜脈竇CT值？正常靜脈竇CT值？52正常顱腦組織CT值腦灰質(zhì)CT值34-39Hu腦白質(zhì)CT值26-29Hu靜脈竇CT值40-60Hu正常顱腦組織CT值腦灰質(zhì)CT值34-39Hu53直接征像？直接征像？54束帶征（索條征）束帶征（索條征）55高密度三角征高密度三角征56直竇及大腦大靜脈血栓直竇及大腦大靜脈血栓57腦靜脈竇血栓之診斷概要課件58深靜脈血栓:基底靜脈及直竇密度增高深靜脈血栓:基底靜脈及直竇密度增高59高密度血栓占25%？高密度血栓占25%？60雙側(cè)橫竇及右側(cè)乙狀竇血栓？雙側(cè)橫竇及右側(cè)乙狀竇血栓？61右側(cè)橫竇血栓充盈缺損右側(cè)橫竇血栓充盈缺損62EmptydeltasignEmptydeltasign63腦靜脈竇血栓之診斷概要課件64？？65PseudoemptydeltasignPseudoemptydeltasign66ArachnoidgranulationsArachnoidgranulations67間接征像靜脈性梗死、水腫、靜脈性出血間接征像靜脈性梗死、水腫、靜脈性出血68腦靜脈竇血栓之診斷概要課件69左側(cè)額頂葉靜脈性腦梗死伴靜脈性腦出血左側(cè)額頂葉靜脈性腦梗死伴靜脈性腦出血70腦靜脈竇血栓之診斷概要課件71右側(cè)額頂葉靜脈性腦出血右側(cè)額頂葉靜脈性腦出血72動(dòng)脈性腦出血?jiǎng)用}性腦出血73紫紺型心臟?。ǚ迨纤穆?lián)癥），高血紅蛋白血癥？紫紺型心臟?。ǚ迨纤穆?lián)癥），高血紅蛋白血癥？74總結(jié)總