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目的探讨心腔血液 CT 值与血红蛋白(Hb)浓度的关系,评价胸部非增强 CT 诊断贫血的准确性。方法胸部(心脏)非增强螺旋 CT 扫描患者92例,分别测量左心室血液及室间隔的CT 密度,测量患者血液中 Hb 的浓度,计算血液与室间隔 CT 密度比,分析各因素之间的相关性。结果血液的 CT 密度与 Hb 浓度呈正相关(r=0.571,P=0.000);血液与室间隔的 CT 密度比与 Hb浓度也呈正相关(r=0.650,P=0.000)。该密度比男性<90%、女性<87%则提示患者贫血。结论左心室血液与室间隔的 CT 密度比可作为判断患者是否贫血的较可靠指标。
Objective To investigate the relationship between CT value and hemoglobin (Hb) concentration in heart blood and to evaluate the accuracy of non-enhanced thoracic CT in the diagnosis of anemia. Methods Thirty-two patients with thoracic (cardiac) non-enhanced helical CT scan were divided into three groups: CT density of left ventricular blood and ventricular septum were measured, Hb concentration in blood was measured, blood and interventricular septum CT density ratio was calculated, and the correlation between various factors was analyzed Sex. Results There was a positive correlation between CT density and Hb concentration in the blood (r = 0.571, P = 0.000). There was also a positive correlation between CT density ratio and Hb concentration in blood and ventricular septum (r = 0.650, P = 0.000). This density is <90% lower than for men and <87% for women, suggesting anemia in patients. Conclusion The CT density ratio of left ventricular blood and ventricular septum can be used as a more reliable indicator of whether patients with anemia.