PERBEDAAN KUALITAS CITRA ANATOMI MSCT THORAX POTONGAN AXIAL PADA VARIASI REKONSTRUKSI SLICE THICKNESS DENGAN KLINIS TUMOR

Abstract

Background: MSCT Thorax examination is using to diagnose desease inside thorax include mass, MSCT Thorax using 3-5 mm slice thickness and can be recons into 1 mm. Slice thickness value will affect to saptial resolution and contrast resolution, then this research has doing in recons variation 2, 3 and 4 mm with mass clinical. This research had done in Radiology Installation RS Panti Rapih Yogyakarta. The purposes is to know the different in MSCT Thorax image quality with Slice thickness variation and to know which give the best image quality in MSCT Thorax.
 Methods: The type of this research is an experimental research using analytical study. The experiment is conducted by three scanning in CT Scan thorax using the same parameters and different Slice thickness there are 2 mm, 3 mm to 4 mm. The image taken on same area scanning for each slice thickness. Furthermore, for each image was measured by radiologist with check list. From each image was evaluated by radiologist with check list. Data from estimation was analyzed with Friedman test because hipotesis type is comparatif with more than two sample and type data is ordinal.
 Result: The results of the study showed that there is differences image quality in MSCT Thorax with p value is 0,001 (< 0,05). Between three slice thickness variation, slice thickness 2 mm have the optimal image quality with mean rank 2,57.
 Conclusion : The result of this study show that slice thickness 2 mm is better than 3 and 4 mm