本文選題：肺微小結(jié)節(jié)　切入點(diǎn)：體層攝影術(shù)　出處：《臨床放射學(xué)雜志》2017年11期 　論文類型：期刊論文

【摘要】：目的評價(jià)多排螺旋CT(MSCT)薄層重組和高分辨率CT(HRCT)靶掃對肺微小結(jié)節(jié)(10 mm)的顯示效果和輻射劑量。方法回顧性分析100例微小肺結(jié)節(jié)MSCT薄層重組和HRCT靶掃的CT表現(xiàn),包括結(jié)節(jié)的大小、密度、內(nèi)部結(jié)構(gòu)(空泡、鈣化)、形態(tài)(邊緣、"分葉"征、"毛刺"征)、伴隨征象(支氣管、血管、胸膜改變)。評價(jià)兩種方法對上述征象的顯示效果,并對輻射劑量進(jìn)行比較。結(jié)果 MSCT薄層重組能準(zhǔn)確地顯示肺微小結(jié)節(jié)的密度、邊緣、空泡、鈣化、"分葉"、"毛刺"、胸膜改變,和HRCT靶掃有良好的一致性。兩種方法對結(jié)節(jié)的均勻度、腫瘤微血管征、結(jié)節(jié)與小支氣管關(guān)系的檢出差異具有統(tǒng)計(jì)學(xué)意義(P0.05)。MSCT薄層重組對均勻度傾向于更"均勻",腫瘤微血管征分型偏低,微血管的數(shù)量偏少。MSCT薄層重組容積CT劑量指數(shù)(CTDIvol)低于HRCT靶掃,兩者之比約1∶2,重組劑量長度乘積(DLP)和有效劑量高于HRCT靶掃,兩者之比約2∶1。結(jié)論 MSCT薄層重組可準(zhǔn)確判斷微小結(jié)節(jié)的多數(shù)征象,和HRCT靶掃有良好的一致性,避免再次HRCT掃描可有效降低輻射劑量。HRCT靶掃對結(jié)節(jié)的均勻度、腫瘤微血管征分型及血管數(shù)量、結(jié)節(jié)與小支氣管關(guān)系的顯示優(yōu)于MSCT薄層重組。
[Abstract]:Objective to evaluate the display effect and radiation dose of multislice spiral CTT (MSCT) thin slice recombination and high resolution CTHRCT (10 mm) for pulmonary micronodules. Methods the CT findings of MSCT thin layer recombination and HRCT target imaging in 100 cases of pulmonary micronodules were retrospectively analyzed, including the size of the nodules. Density, internal structure (vacuole, calcification, shape) (edge, lobular sign, "burr" sign, accompanying sign (bronchus, blood vessel, pleural change). Results the density, margin, vacuole, calcification, lobulation, burr, pleural changes of pulmonary micronodules could be accurately demonstrated by MSCT thin layer recombination. There was good agreement with HRCT target scan. The two methods were applied to the uniformity of nodules, tumor microvessel sign, The difference of the relationship between nodules and bronchioles was statistically significant. The TLC recombination of MSCT tended to be more "homogeneous" for uniformity, the microvessel sign was lower and the number of microvessels was lower. CTDIvoll was lower than that of HRCT. The ratio of the two is about 1: 2, the product of recombination dose length and the effective dose are higher than that of HRCT target scan, and the ratio of them is about 2: 1.Conclusion Thin-layer recombination of MSCT can accurately judge most signs of small nodules, and has good agreement with HRCT target scan. Avoiding repeated HRCT scan can effectively reduce the radiation dose. HRCT target scan on the uniformity of nodules, tumor microvessel type and the number of vessels, the relationship between nodules and bronchioles is better than MSCT thin layer reorganization.
【作者單位】： 蘇州大學(xué)附屬第一醫(yī)院影像科;蘇州市立醫(yī)院東區(qū)放射科;蘇州市立醫(yī)院東區(qū)呼吸科;
【基金】：蘇州市臨床重點(diǎn)病種診療技術(shù)專項(xiàng)項(xiàng)目(編號:LCZX201501) 蘇州市應(yīng)用基礎(chǔ)研究計(jì)劃基金(編號:SYSD2014113) 蘇州市民生科技關(guān)鍵技術(shù)應(yīng)用研究基金(編號:SS201653)
【分類號】：R730.44;R734.2

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