PENGARUH VARIASI SLICE THIKCNESS TERHADAP KUALITAS CITRA PADA PEMERIKSAAN CT SCAN KEPALA DENGAN KASUS STROKE HEMORRAGIC DI RS TK III dr. BRATANATA JAMBI
ABSTRACT
BACHELOR OF APPLIED SCIENCE PROGRAM
IMAGING RADIOLOGY TECHNOLOGY STUDY PROGRAM
RADIODIAGNOSTICS AND RADIOTHERAPY DEPARTMENT
HEALTH POLYTECHNIC OF HEALTH MINISTRY
JAKARTA II
THESIS, 2025
FIKRI AULIA RAHMAN
"THE EFFECT OF SLICE THICKNESS VARIATION ON IMAGE QUALITY IN HEAD
CT SCAN EXAMINATION FOR HAEMORRHAGIC STROKE CASES UNDERTAKEN
AT DR. BRATANATA HOSPITAL, JAMBI, CLASS III"
V Chapters + 71 Pages + 3 Images + 13 Tables
Background: pathologically, haemorrhagic stroke is a type of stroke that occurs due to the rupture
of blood vessels in the brain, leading to bleeding in the brain tissue or surrounding spaces. In
relation to which, the diagnosis of haemorrhagic stroke is typically made through head CT scans,
which are considered the primary diagnostic tool due to their ability to quickly and accurately
detect bleeding. However, the image quality produced by CT scans is highly dependent on various
technical parameters, one of which is slice thickness. The slice thickness used in head CT scans for
haemorrhagic stroke cases typically ranges from 5 mm to 10 mm, using a single-range protocol
from the basic cranium to the vertex. Slice thickness refers to the thickness of the scan slices,
which can be adjusted according to clinical needs. As for the factors used to evaluate image
quality, it includes among the other things spatial resolution, contrast resolution, and noise.
Research Design: this research applies quantitative method, utilizing an experimental approach to
analyse the impact of varying slice thicknesses of 4 mm, 5 mm, and 6 mm on image quality
(spatial resolution, contrast resolution, and noise) in head CT scans for haemorrhagic stroke cases,
with a total of 10 samples. Based on the results of the research, the investigator concludes, based
on the Friedman test results, that there is a significant effect on the image quality of head CT scans
for haemorrhagic stroke cases using variations of slice thicknesses of 4 mm, 5 mm, and 6 mm.
Results: based on the Friedman test results for image quality, there is a significant difference in
the image quality of head CT scans for haemorrhagic stroke cases using slice thickness variations
of 4 mm, 5 mm, and 6 mm. According to the mean rank results from the Friedman test, the 5 mm
slice thickness had the highest mean rank of 2.50. Based on these findings, the researcher
recommends using a slice thickness of 5 mm for head CT scans in haemorrhagic stroke cases, as it
provides clear and high-quality images.
Keywords : Head CT scan, Slice Thickness, Haemorrhagic Stroke, Image Quality
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