Pengukuran Volume Pendarahan Otak Pasien Stroke Hemoragik Intraserebral Hasil Multi Slice CT Scan (MSCT) Menggunakan Gradient Vector Flow (GVF) - Hazard And Operability Study (HAZOP) And Safety Instrumented System Evaluation Based On RAMS+C Measurement At Oil Treating Plant PT. Saka Indonesia Pangkah Limited

Rudiansyah, Muhamad (2018) Pengukuran Volume Pendarahan Otak Pasien Stroke Hemoragik Intraserebral Hasil Multi Slice CT Scan (MSCT) Menggunakan Gradient Vector Flow (GVF) - Hazard And Operability Study (HAZOP) And Safety Instrumented System Evaluation Based On RAMS+C Measurement At Oil Treating Plant PT. Saka Indonesia Pangkah Limited. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pengukuran volume pendarahan otak pasien stroke hemoragik intraserebral hasil MSCT menggunakan GVF adalah menjumlahkan luas area multi slice CT Scan yang homogen dari hasil GVF. Pengukuran ini hanya dapat dilakukan melalui perangkat lunak khusus di komputer. Pengembang alat MSCT juga tidak menyertakan software ini jika sudah di export ke media Compact Disk (CD) atau flashdisk. Selama ini dokter spesialis radiolog melakukan pengukuran dengan rumus secara manual. Hal inilah yang menjadi landasan untuk dilakukan penelitian.
Penelitian ini menggunakan data citra Digital Imaging and Communications in Medicine (DICOM) yang diambil langsung dari media CD. Data citra akan dilakukan filtering untuk untuk meningkatkan kualitas citra. Citra DICOM diinisialisasi di pendarahan otak. Inisalisasi akan melakukan segmentasi deformable model gradient vector flow (GVF) untuk menghasilkan Region of interest (ROI). Hasil ROI akan di lakukan menjadi mask. Jumlah piksel pada mask dikalikan dengan nilai thickness untuk menjadi volume per slice. Hasil dari ROI dijadikan inisial untuk slice berikutnya, dan diulangi kembali sampai slice terakhir. Volume keseluruhan didapat dari hasil jumlah ROI semua slice. Standar konstanta pada proses pengolahan citra menggunakan GVF yang dipakai adalah σ=5 adalah standar deviasi di filter gaussian blur, α=0.5 adalah elastisitas, β=0 adalah kekakuan, γ=1 adalah kelekatan, "κ"=0.6 adalah energi external, dan iterasi 40 di GVF deform. Hasil perhitungan volume pendarahan stroke hemoragik dengan GVF snake memiliki nilai galat 18,70% dan 23,01%. GVF snake dapat digunakan sebagai pengukuran volume pendarahan otak pasien stroke hemoragik intraserebral.
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Measurements of brain hemorrhagic intracerebral hemorrhagic stroke volume measurements using GVF were summed up in a multi-slice area of homogeneous CT Scan from GVF. This measurement can only be done through special software on the computer. MSCT tool developers do not include this software if it has been exported to media Compact Disk (CD) or flashdisk. During this time a specialist radiologist performing measurements with the formula manually. This is the basis for research.
This study uses image data Digital Imaging and Communications in Medicine (DICOM) taken directly from CD media. Image data will be filtered to improve image quality. DICOM imagery is initialized at the cerebral hemorrhage. Initialization will perform deformable segmentation of gradient vector flow (GVF) model to produce Region of interest (ROI). ROI results will be done into a mask. The number of pixel in the mask is multiplied by the thickness value to be the volume per slice. The result of ROI is initialized for the next slice, and is repeated until the last slice. The overall volume is derived from the total ROI of all slices. The standard constants for image processing using GVF are σ=5 is the standard deviation in Gaussian blur, α=0.5 is elasticity, β=0 is stiffness, γ=1 is viscocity, "κ"=0.6 is external energy, and iteration 40 in GVF deform. The result of hemorrhagic stroke volume with GVF snake has a 18,70% and 23,01% error rate. GVF snake can be used as a measurement intracerebral hemorrhagic stroke volume.

Item Type: Thesis (Masters)
Additional Information: RTE 006.42 Rud p-1 3100018078378
Uncontrolled Keywords: Stroke Hemoragik, DICOM, GVF Snake
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA1637 Image processing--Digital techniques
Divisions: Faculty of Electrical Technology > Electrical Engineering > 20101-(S2) Master Thesis
Depositing User: Muhamad Rudiansyah
Date Deposited: 11 Jan 2019 07:42
Last Modified: 05 Feb 2021 05:06
URI: http://repository.its.ac.id/id/eprint/55726

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