PERBEDAAN INFORMASI CITRA CT SCAN KEPALA PADA KASUS STROKE NON HEMORAGIC DENGAN VARIASI NILAI WINDOW WIDTH (Di Instalasi Radiologi RSUD. Dr. R. Soeprapto Cepu)

Abstract

Abstrak

Latar Belakang : Window width semakin tinggi maka terlihat semakin kurang kontras. Instalasi Radiologi RSUD Cepu, ww belum ada standar, ww kasus snh menggunakan protokol tersetting pabrikan. Tujuan : Mendapatkan ww  yang tepat dengan kualitas citra terbaik. Metode : penelitian eksperimen, variasi ww 90, 95, 100, 105, 110. Analisis data dengan uji normalitas data dengan uji Kolmogorov Sprinov. Uji normalitas dihasilkan p>0,05, dikatakan data berdistribusi normal. Uji ini digunakan statistik non parametrik. Data diperoleh dari sampel yang sama sehingga data penelitian data berpasangan sehingga uji beda yang sesuai Paired T Test. Hasil : uji univariat anatomi tertinggi ww 90, anatomi semakin menurun ketika ww dinaikkan. Dilakukan uji beda ww 100 yang menjadi protokol RSUD Cepu dengan variasi ww lainya. Uji beda menggunakan Paired T Test, nilai anatomi ww 90 sebesar 22,9 signifikan berbeda dengan ww 100 sebesar 19,5. Selisih mean diantara keduanya sebesar 3,4 dapat dihitung ww 90 dapat menaikkan informasi anatomi sebesar 17,44 %. ww 95 dan 105 dihasilkan nilai yang tidak terdapat perbedaan. ww 110 menghasilkan anatomi lebih rendah 18,9 dibandingkan ww 100. Kesimpulan : ww 90 menjadi pertimbangan protokol standar.

Kata Kunci : CT Scan Kepala, Stroke non hemoragic, variasi ww

Abstract

Background : The higher the window width, the less contrast will appear. Radiology Installation of Cepu Hospital, there are no standards yet, but in this case using a factory-set protocol.Objective : Getting the right ww with the best image quality Method : experimental research, variations ww 90, 95, 100, 105, 110. Data analysis with data normality test with the Kolmogorov Sprinov test. Normality test produced p> 0.05, said data were normally distributed. This test uses non-parametric statistics. Data is obtained from the same sample so that the research data is paired so that the difference test is suitable for Paired T Test. Results : highest anatomical univariate test ww 90, anatomy decreases when ww is raised. Different WW 100 tests were used in the Cepu Regional Hospital protocol with other WW variations. Different test using Paired T Test, the anatomical value of ww 90 of 22.9 is significantly different from ww 100 of 19.5. The mean difference between them by 3.4 can be calculated ww 90 can increase anatomical information by 17.44%. WW 95 and 105 produced values that are no difference. WW 110 yields lower anatomy of 18.9 compared to WW 100. Conclusion : WW 90 takes into consideration the standard protocol.

Keywords: Head CT Scan, Non-hemorrhagic stroke, ww variation