本文選題：淚腺　切入點(diǎn)：炎性假瘤　出處：《廣東醫(yī)學(xué)》2017年19期

【摘要】：目的探討淚腺炎性假瘤的MRI特征,為臨床早期診斷提供影像學(xué)依據(jù)。方法收集36例(46側(cè))經(jīng)病理證實(shí)的淚腺炎性假瘤患者的MRI資料。所有患者均行MR平掃及增強(qiáng)MR掃描,其中24例行動(dòng)態(tài)增強(qiáng)掃描,12例行擴(kuò)散加權(quán)成像掃描。評估其常規(guī)MR表現(xiàn),通過DCE-MR及DWI-MR圖像后處理得到以下參數(shù):達(dá)峰時(shí)間(Tpeak)、峰值強(qiáng)化指數(shù)(CIpeak)、最大強(qiáng)化率(ERmax)、流出率(WR)、時(shí)間-信號(hào)強(qiáng)度曲線(TIC)類型及表觀彌散系數(shù)(ADC)值。結(jié)果 36例(46側(cè))淚腺炎性假瘤中,2例(2側(cè))累及淚腺瞼部,3例(4側(cè))累及淚腺眶部,31例(41側(cè))瞼部眶部均受累;2例(2側(cè))形態(tài)規(guī)則,均起自淚腺眶部,34例(44側(cè))形態(tài)不規(guī)則;14例(14側(cè))邊界清晰,22例(32側(cè))邊界模糊。T1WI呈等信號(hào)或略低信號(hào);T2WI 28例(37側(cè))呈等或稍高信號(hào),8例(9側(cè))呈略低信號(hào),14例(18側(cè))T2WI信號(hào)欠均勻;11例(15側(cè))中度強(qiáng)化,25例(31側(cè))呈明顯強(qiáng)化,其中8例(11側(cè))呈不均勻強(qiáng)化。淚腺炎性假瘤CIpeak為1.14±0.39,Tpeak為(81.5±42.6)s,ERmax為1.26±0.43,WR為(11.4±0.09)%。21例TIC中11例為Ⅰ型或Ⅱ型,7例為Ⅲ型,3例為IV型。ADC值為(0.74±0.28)×10~(-3)mm~2/s。結(jié)論 MRI可以清晰顯示淚腺炎性假瘤的部位、形態(tài)、范圍、邊界,DCE-MRI及ADC值為其診斷及鑒別診斷提供輔助診斷依據(jù)。
[Abstract]:Objective to investigate the MRI features of lacrimal gland inflammatory pseudotumor and to provide imaging evidence for early clinical diagnosis. Methods the MRI data of 36 patients with lacrimal gland inflammatory pseudotumor confirmed by pathology were collected. In 24 cases, dynamic contrast-enhanced scan was performed in 12 cases, diffusion weighted imaging was performed in 12 cases. The following parameters were obtained by post-processing of DCE-MR and DWI-MR images: peak time, peak enhancement index, peak enhancement index, maximum enhancement rate, efflux rate, time-signal intensity curve and apparent diffusion coefficient. Results there were 36 cases (46 sides) with tears. In 2 cases of adenoinflammatory pseudotumor, 2 cases (2 sides) involved lacrimal gland eyelid in 3 cases (4 sides)) of lacrimal gland orbital region (31 cases (41 sides)) the orbital part of eyelid was involved in 2 cases (2 sides). All of them originated from the lacrimal gland orbital fissure in 34 cases (44 sides) and irregular shape in 14 cases (14 sides). The boundary was clearly defined in 22 cases (32 sides). The boundary was blurred on T 1WI or slightly low signal intensity on T 2WI in 28 cases (n = 37), with iso-or slightly hyperintense signal intensity in 8 sides (n = 9)) with slightly low signal intensity in 14 cases. In 18 cases of T2WI, the signal intensity was uneven in 11 cases (15 sides) and moderate enhancement was found in 25 cases (31 sides). The CIpeak of lacrimal gland inflammatory pseudotumor was 1.14 鹵0.39 Tpeak: 1.26 鹵0.43 WR = 11.4 鹵0.09 WR of 21 cases of TIC, 11 cases were type 鈪，

本文編號(hào)：1667867