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| Computed Tomography Observation on Density of Fluid tissue in Ventricular and Intravascular |
| The Affiliated Baiyun Hospital of Guiyang Medical Collage， Guiyang 550014，China |
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Abstract Objective： To observe or explore density change of fluid internal ventricle and big arteriovenous vessel by CT value measured. Method：（ 1） Retrospective analysis CT image data of 41 anemia patients， including 40 cases chest and 21 cases of abdominal CT inspection. To find normal chest CT 40 cases and abdominal CT 21 cases in PACS.respectively measured CT value of areas of interest（x±s）， and then make a comparison. Also calculate the ration of the left ventricle and the interventricular septum CT value or the ratio of the liver parenchyma and liver intravascular CT value in each group.（ 2） To Randomly select CT 20 cases of head and chest CT 40 example image data， measure venous sinus and double internal carotid artery CT value， inferior vena and thoracic aorta CT value. To compare density difference of arterial blood and venous blood.（ 3） In case of secondary erythrocytosis disease observation of CT image data， through the measurement of CT values of interest area， combining with the hemoglobin concentration， understand the cause of the CT value was higher than normal blood. Result：（ 1） CT value of all the interest in areas such as thoracic aorta， left and right ventricle the abdominal aorta in anemia group and normal control group. In corresponding points matching mean comparison， the difference was statistically significant（ P<0.01）. Anemia group， the left ventricle/ ventricular ：35%-87%；the portal vein/the liver parenchyma： 26%-48%. Normal control group， the left ventricle/ ventricular： 88%-100%；the portal vein/the liver parenchyma： 68%-82%. By comparing， the difference was statistically significant（ P<0.01）.（2） Measuring the interest area such as： internal carotid artery， venous sinus， inferior vena cava diaphragmatic upside
segment and at the same level of the thoracic aorta. The area on behalf of arterial blood and venous blood was matching mean comparison（ P<0.01）.（ 3） In the case of secondary erythrocytosis disease of bilateral internal carotid artery，superior sagittal sinus， sigmoid sinus， left and right ventricle， chest aorta， double renal artery CT value measurement about 55-70 HU， hemoglobin concentration of 244-256 g/L. Conclusion： Anemia and blood cells increased disease can be diagnosed by CT value simple measurement. The reason of the venous sinus density slightly higher than brain parenchyma and the arterial blood except sinus blood stream is slow and high density of dura mater， venous blood density is higher than the arterial is also one of the reason.
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