STUDI KASUS PENGUKURAN OTOMATIS VOLUME PENDARAHAN STROKE HEMORAGIK MENGGUNAKAN VOLUME CALCULATION BERBASIS VOXEL DI INSTALASI RADIOLOGI PKU MUHAMMADIYAH BANTUL
DOI:
https://doi.org/10.51878/healthy.v5i4.15691Keywords:
Head CT-Scan, Hemorrhagic Stroke, Volume Calculation, Hounsfield UnitAbstract
ABSTRACT
Hemorrhagic stroke requires structured measurement of bleeding volume to provide quantitative information regarding hematoma characteristics. This study aimed to describe the head CT examination procedure and the application of voxel-based hemorrhage volume measurement in hemorrhagic stroke cases at the Radiology Installation of RSU PKU Muhammadiyah Bantul. A descriptive qualitative approach with a case study design was conducted in May–June 2026. Data were obtained through observation, interviews, and documentation involving four cases. The examination used a Non-Contrast CT (NCCT) protocol with axial acquisition, a slice thickness of 5.0 mm, and slice collimation of 1.0 × 16, followed by reconstruction to a slice thickness of 1.0 mm for post-processing on a workstation. Volume measurement was performed using a voxel-based volume calculation feature with a threshold of 50–80 Hounsfield Unit (HU). Three cases used an automatic ROI, while one case required manual cropping because the hematoma was adjacent to the skull. The measured hemorrhage volumes were 4.93 mL, 1.27 mL, 8.89 mL, and 2.22 mL, respectively. The findings indicate that the voxel-based method can be used to obtain quantitative hemorrhage volume information, with ROI adjustment required in certain anatomical conditions. Further research should involve a larger number of cases and compare this method with other volumetric techniques.
ABSTRAK
Stroke hemoragik membutuhkan pengukuran volume perdarahan yang terstruktur untuk memberikan gambaran kuantitatif mengenai kondisi hematoma. Penelitian ini bertujuan mendeskripsikan prosedur pemeriksaan CT kepala serta penerapan pengukuran volume perdarahan berbasis voxel pada kasus stroke hemoragik di Instalasi Radiologi RSU PKU Muhammadiyah Bantul. Penelitian menggunakan pendekatan kualitatif deskriptif dengan desain studi kasus pada Mei–Juni 2026. Data diperoleh melalui observasi, wawancara, dan dokumentasi terhadap empat kasus. Pemeriksaan dilakukan menggunakan protokol Non-Contrast CT (NCCT) dengan akuisisi aksial, slice thickness 5,0 mm dan slice collimation 1,0×16, kemudian direkonstruksi menjadi slice thickness 1,0 mm untuk proses post-processing pada workstation. Pengukuran dilakukan menggunakan fitur volume calculation berbasis voxel dengan threshold 50–80 Hounsfield Unit (HU). Tiga kasus menggunakan ROI automatic, sedangkan satu kasus memerlukan manual cropping karena hematoma berdekatan dengan struktur tulang. Volume perdarahan yang diperoleh sebesar 4,93 ml, 1,27 ml, 8,89 ml, dan 2,22 ml. Temuan menunjukkan bahwa metode berbasis voxel dapat digunakan untuk memperoleh informasi kuantitatif volume perdarahan dengan penyesuaian ROI pada kondisi anatomi tertentu. Penelitian selanjutnya perlu melibatkan lebih banyak kasus dan membandingkan metode ini dengan teknik volumetri lainnya.
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