Department of Medical Imaging, Suzhou Ninth People's Hospital, Wujiang, Jiangsu, PR China.
Acta Radiol. 2021 Feb;62(2):147-154. doi: 10.1177/0284185120916202. Epub 2020 Apr 15.
Dual-energy computed tomography (DE-CT) scans were acquired to identify cholesterol and adenomatous gallbladder (GB) polyps, which have not been well evaluated before surgery.
To evaluate the DE-CT findings of GB polyps 1.0-2.0 cm in size and differentiate between cholesterol and adenomatous polyps.
Forty-six patients with GB polyps were surgically treated from December 2017 to December 2019 and divided into two groups according to their postoperative pathologic results: a cholesterol group with 26 patients and an adenomatous group with 20 patients. All of these patients underwent DE-CT imaging with tube voltages of 80 kVp and 140 kVp within two weeks before surgery. Mean attenuation values were measured for every GB polyp at 80/140 kVp and at 40/140 keV. The mean attenuation value changes between 140 kVp and 80 kVp (MAVC) and mean attenuation value changes between 100 keV and 40 keV (MAVC) were calculated.
The CT image parameters of all 46 patients with GB polyps were analyzed. There were significant differences in MAVC and MAVC between cholesterol and adenomatous polyps ( <0.05); these values were positive for cholesterol polyps and negative for adenomatous polyps.
The unique energy spectrum information provided by DE-CT scans is helpful in differentiating between cholesterol and adenomatous polyps 1.0-2.0 cm in size.
双能计算机断层扫描（DE-CT）用于识别胆固醇和腺瘤性胆囊（GB）息肉，这些在手术前未得到很好的评估。
评估 1.0-2.0cm 大小的 GB 息肉的 DE-CT 表现，并区分胆固醇和腺瘤性息肉。
2017 年 12 月至 2019 年 12 月，46 例经手术治疗的 GB 息肉患者根据术后病理结果分为胆固醇组（26 例）和腺瘤组（20 例）。所有患者均在术前两周内行 DE-CT 成像，管电压分别为 80kVp 和 140kVp。在 80/140kVp 和 40/140keV 下测量每个 GB 息肉的平均衰减值。计算 140kVp 和 80kVp 之间的平均衰减值变化（MAVC）和 100keV 和 40keV 之间的平均衰减值变化（MAVC）。
分析了 46 例 GB 息肉患者的 CT 图像参数。胆固醇和腺瘤性息肉之间的 MAVC 和 MAVC 存在显著差异（<0.05）；这些值对胆固醇息肉呈阳性，对腺瘤性息肉呈阴性。
DE-CT 扫描提供的独特能谱信息有助于区分 1.0-2.0cm 大小的胆固醇和腺瘤性息肉。
