肝臟動脈期一過性強(qiáng)化灶-免費(fèi)閱讀
【正文】 ? 腫瘤外側(cè)的楔形動脈期一過性強(qiáng)化灶； ? Fig. 10C — 59yearold man with large hepatic intraparenchymal metastasis from colon carcinoma and correlated sectorial fanshaped transient hepatic intensity difference. Axial gradientecho fatsuppressed T1weighted unenhanced (146/2) (B) and axial gradientecho fatsuppressed T1weighted gadoliniumenhanced arterial phase (146/2) (C) MR images show wide fanshaped arterial phenomenon with straight border (arrowhead, C) due to hypointense neoplastic lesion at its apex (arrow), causing portal pression. Note how segment III is also slightly enhanced. Although this transient hepatic intensity difference could look like lobar type because of distribution, this arterial phenomenon is undoubtedly sectorial because lesion, being hypodense and hypoenhancing, causes portal pression and not a primary increase in arterial flow. ? 50歲男性患者 ? 肝包膜下血管瘤 ? 楔形動脈期一過性強(qiáng)化灶 ? B超見楔形區(qū)域 — 低回聲， ? 彩色多普勒可見肝動脈 門靜脈分流 ? 6B — 50yearold man with small round hemangioma beneath Glisson39。 ? 肝臟富血供腫瘤的“盜血”作用 ,也是產(chǎn)生肝臟病理性灌注異常常見原因。 ? THPD的影像學(xué)表現(xiàn) CT表現(xiàn) 高密度灌注異常 CT表現(xiàn) ： 增強(qiáng)掃描時表現(xiàn)為動脈期一過性肝實質(zhì)楔形、三角形、類圓形以及不規(guī)則高密度影，密度均勻，邊緣清晰，與周邊肝組織之間有清楚的窄移行帶，脈管系統(tǒng)無移位，在高密度灌注異常影中可見血管影，門靜脈期恢復(fù)等密度，可單發(fā)或多發(fā)。 ? 男性， 56歲 ? 楔形動脈期一過性強(qiáng)化灶 ? 肝動脈期 CT楔形一過性強(qiáng)化灶， ? 同期的 MRI/CT和 B超，沒有發(fā)現(xiàn)局部病灶： ? — 56yearold man with sectorial fanshaped transient hepatic intensity difference associated with cholangiocellular carcinoma. Axial iodinated contrastenhanced arterial phase helical CT image shows sectorial arterial ph
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