PERBEDAAN INFORMASI CITRA ANATOMI PEMERIKSAANMULTI SLICE COMPUTED TOMOGRAPHY THORAXDENGAN VARIASI DOSIS (ml/kg) MEDIA KONTRAS

MSCT Thorax is a radiological examination that require contrast media to visualize soft tissue structure based on the basic principles of X-ray absorption. One of the factors that affect contrast enhancement is volume and concentration of the contrast media. Reference manufacturer's recommended dose (ml/kg) of contrast media in a CT-Scan examination is 0,5 to 2,0 ml/kg BB for a concentration of 300 mg I/ml and 370 mg I/ml. Granting volume of contrast media in Dr. Sardjito Hospital conducted with doses between 1,0 to 1,5 ml/kg BB, based on estimates without a precise calculation. The purpose of this study is to know there is a difference or not of anatomy image information of MSCT Thorax and knowing which one is better between the variation contrast media dose of 1,0 ml/kg BB and 1,5 ml/kg BB can give anatomy image information of MSCT Thorax.This study is quantitative with pre-experimental design approach with one shot case study method. Number of samples are 16, divides into 2 groups, the number of each group is 8. Image of MSCT Thorax was assessed is lung parenchyma, right ventricle, left ventricle, pulmonary trunk, and descending aorta. Assessment the image was carried by 2 radiologist (rater). Kappa test was conducted to determine inter-rater reliability. Normality test is performed to determine whether the data were normally distributed or not. The statistic test with different test Mann Whitney U was done to know there is a difference or not of anatomy image information of MSCT Thorax. The higher mean rank shows a better variation contrast media dose (ml/kg).The result of this study shows there is a difference of anatomy image information of MSCT Thorax with variation contrast media dose of 1,0 ml/kg BB and1,5 ml/kg BB with significant value 0,034 (p value < 0,05). Variation contrast media dose 1,5 ml/kg BB is better than 1,0 ml/kg BB was showed with mean rank 10,88