| 张迪 刘艳斌 楚晓权 苏贝尔 李怡萱 秦海燕.能谱CT动态增强后单能量CT值、能谱曲线形态及斜率在肾上腺腺瘤与非腺瘤诊断中的应用初探[J].,2015,15(12):2273-2277 |
| 能谱CT动态增强后单能量CT值、能谱曲线形态及斜率在肾上腺腺瘤与非腺瘤诊断中的应用初探 |
| Preliminary Application of Dynamic-enhanced CT Spectrum's Single EnergyCT Value and Curve Shape and Slope in Diagnosis of Adrenal Adenomasand Non-adenomas |
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| DOI： |
| 中文关键词: 能谱CT 单能量图 曲线 肾上腺 肿瘤 |
| 英文关键词: ectral CT Monoimage Curve Adrenal Tumor |
| 基金项目:省教育厅课题面上项目（12531249）；哈尔滨市科技创新人才研究专项资金（2011RFXYS054） |
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| 中文摘要: |
| 目的：研究能谱CT 动态增强后肾上腺肿瘤单能量CT 值、能谱曲线形态及斜率差异的临床价值。方法：应用能谱分析软件处
理腺瘤（45 个）与非腺瘤（20 个）CT 动态增强资料，均经手术病理和/或临床资料证实。分别测量腺瘤与非腺瘤在28 s、60 s、180 s
时间点的11 个单能量点（40～140keV）CT 值、记录能谱曲线形态并计算其低能量段（40～100 keV）的斜率。结果：在各个时间点，
腺瘤与非腺瘤各单能量点CT 值差异无统计学意义（P＞0.05），能谱曲线形态为速降形、缓降形、近似直线形、勺形及弓形五种
（p<0.05）。在60 s，二者能谱曲线斜率差异有统计学意义（P<0.05），而在28 s与180 s，差异无统计学意义（P>0.05）。结论：能谱CT
动态增强后肾上腺腺瘤与非腺瘤能谱曲线形态及在60 s时低能量段能谱曲线斜率存在差异，可能有助于二者鉴别。 |
| 英文摘要: |
| Objective:To observe the differences of single energy CT value and spectral curve shape and slope after dynamic
postcontrast CT for adrenal tumors with gemstone spectral imaging.Methods:45 adrenal adenomas and 20 non-adenomas that were
confirmed by postoperative and/ or clinical information, undergone the spectral analysis software. We measured 11 single energy points(
40 to 140keV) CT value, recorded the spectral curve shape and calculated the spectral curve slope in the low energy region (40 to
100keV) obtained at 25 s, 60 s and 180 s, respectively.Results:There was no statistical difference for the CT values of adenomas and
non-adenomas at each single energy points at all imaging gathering points (P>0.05). Five types of spectrum curve, including downhill
type, slow down type, approximate linear, spoon-shaped and bow-shaped were showed in adenomas and non-adenomas (P>0.05).
Downhill type was more commonly seen in adenomas. At 60 s, there was significant difference for the slope which came from the 40 to
100keV single energy points between adenomas and non-adenomas（P<0.05）. No differences of the slope of the spectrum curve were
found at other times.Conclusion:The shapes of spectral curve of adrenal tumors were different, and the slope of spectral curve reflects
the variation of CT value according to low keV level at 60 s postcontrast, which is helpful in differentiating adrenal adenoma and
non-adenoma. |
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