本文選題：宮頸腫瘤 + 雙源CT�。� 參考：《實用醫(yī)學(xué)雜志》2015年06期

【摘要】：目的:探討雙源CT雙能量虛擬平掃(VNC)及CT血管顯影(CTA)在宮頸癌診療中的應(yīng)用價值。方法:對67例經(jīng)病理確診宮頸癌患者用雙源CT行常規(guī)平掃、動脈期掃描及實質(zhì)期雙能量掃描。比較虛擬平掃與常規(guī)平掃(CNC)圖像上顯示的宮頸病變、臀大肌及膀胱的平均CT值、SNR、CNR、圖像質(zhì)量評分、輻射劑量及對病灶的顯示。同時應(yīng)用雙能去骨獲得盆腔CTA圖像,直觀顯示腫瘤與周圍血管的關(guān)系和腫瘤供血動脈。結(jié)果:與常規(guī)平掃相比,雙能量掃描方案輻射劑量ED低于常規(guī)掃描方案(P0.05),劑量約降低31.4%。虛擬平掃所測器官CT值差異無統(tǒng)計學(xué)意義(P0.05);圖像SNR、CNR、圖像質(zhì)量評分有統(tǒng)計學(xué)差異(P0.05);兩組圖像評分比較差異無統(tǒng)計學(xué)意義(P0.05),絕對評分虛擬平掃圖像低于常規(guī)平掃,但均在3分以上,能達(dá)到診斷要求;兩種圖像對病變的大小、位置顯示無統(tǒng)計學(xué)差異(P0.05)。結(jié)論:雙源CT盆腔成像中,雙能量虛擬平掃具有取代常規(guī)平掃的可能,減少1次平掃的放射劑量,在不影響圖像質(zhì)量及病灶檢出的情況下降低了輻射劑量,具有潛在的臨床應(yīng)用價值。
[Abstract]:Objective: to evaluate the value of dual source CT dual energy virtual plain scan (VNC) and CT angiography (CTAA) in the diagnosis and treatment of cervical cancer. Methods: 67 cases of cervical cancer diagnosed by pathology were examined with conventional plain scan, arterial phase scan and parenchymal phase double energy scan with dual source CT. The average CT values of the gluteus maximus and bladder were compared between the virtual plain scan and the conventional plain scan (CNC) images. The image quality score, radiation dose and the display of the lesions were compared. At the same time, the pelvic CTA images were obtained by double energy bone removal, and the relationship between tumor and peripheral blood vessels and the tumor blood supply artery were visualized. Results: compared with conventional plain scan, the radiation dose Ed of dual-energy scanning scheme was lower than that of conventional scanning scheme (P0.05), and the dose was about 31.4% lower than that of conventional scan scheme. There was no significant difference in CT value of the organs measured by virtual plain scan (P 0.05); there was no significant difference in image quality score between the two groups (P 0.05); the absolute score of virtual plain scan was lower than that of conventional plain scan, but all of them were above 3 points, and there was no significant difference in image score between the two groups (P < 0.05). There was no significant difference in the size and location of the lesions between the two images (P 0.05). Conclusion: in dual-source CT pelvic imaging, dual energy virtual plain scan is possible to replace conventional plain scan and reduce the radiation dose of one plain scan, and reduce the radiation dose without affecting the image quality and lesion detection. It has potential clinical application value.
【作者單位】： 貴州省人民醫(yī)院影像科;貴州省安順市人民醫(yī)院婦產(chǎn)科;
【基金】：安順市科技計劃項目(編號:安市科合[2012]36號)
【分類號】：R737.33;R730.44

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