本文選題：甲狀腺微小乳頭狀癌 + 磁共振擴散成像��； 參考：《臨床放射學雜志》2017年08期

【摘要】：目的探討高b值擴散加權成像(DWI)診斷甲狀腺微小乳頭狀癌的價值。方法選擇因甲狀腺結節(jié)擬行手術患者75例,術前均常規(guī)進行甲狀腺DWI檢查,分別測量不同b值DWI圖像中單個結節(jié)與鄰近正常甲狀腺組織信號強度的比值(R值:R0、R800、R2000)以及高b值DWI圖像中R值較低b值DWI圖像中R值變化情況(Type-R800/0、Type-R2000/0、Type-R2000/800:Ⅰ型為上升型、Ⅱ型為平臺型、Ⅲ型為下降型),再通過與術后病理檢查結果對照,評估上述診斷指標對甲狀腺微小乳頭狀癌與良性結節(jié)的鑒別診斷價值。結果共有良性結節(jié)53個和微小乳頭狀癌42個納入結節(jié)測量和統(tǒng)計分析。(1)單變量分析結果顯示,R值中的R0和R2000,以及R值變化類型中的Type-R800/0、Type-R2000/0、Type-R2000/800,在甲狀腺微小乳頭狀癌與良性結節(jié)間顯著(P㩳0.05)。(2)多變量分析結果顯示,R0(敏感度和特異性分別為83.26%和64.78%)以及Type-R2000/0(敏感度和特異性分別為93.81%和85.63%),可作為甲狀腺微小乳頭狀癌的獨立診斷指標(P值分別㩳0.05和㩳0.001);如果將R0和Type-R2000/0聯(lián)合診斷,特異性可進一步提高(87.59%)。結論高b值DWI對于甲狀腺微小乳頭狀癌與良性結節(jié)鑒別診斷價值較高。
[Abstract]:Objective to evaluate the value of high b value diffusion weighted imaging (DWI) in the diagnosis of thyroid micropapillary carcinoma. Methods Seventy-five patients with thyroid nodules who were scheduled for operation were examined with DWI before operation. The ratio of signal intensity of single nodule to adjacent normal thyroid tissue in DWI images with different b values was measured. The ratio of signal intensity of single nodule to adjacent normal thyroid tissue was R: R0 / R800 R2000) and the R value of high b value DWI images was lower than that of DWI images with lower b value. The changes of R values in high b value DWI images were as follows: Type-R800 / 0 Type-R2000 / 0 / 0 Type-R2000 / 800: type I was ascending type, type 鈪，

本文編號：1928064