Evaluasi Bilangan CT dan Kualitas Citra Pada In-House Fantom Silinder Menggunakan Algoritma Rekonstruksi iDose CT Kepala

Rasyidah, Adinda Ummur (2023) Evaluasi Bilangan CT dan Kualitas Citra Pada In-House Fantom Silinder Menggunakan Algoritma Rekonstruksi iDose CT Kepala. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penggunaan computed tomography (CT)-Scan telah menjadi praktik umum dalam diagnosis medis di Indonesia. Namun, jumlahnya tidak diimbangi dengan ketersediaan fantom untuk mengevaluasi kinerjanya. Tugas akhir ini bertujuan untuk menjelaskan desain, konstruksi, dan mengevaluasi fantom silinder in-house untuk quality control (QC) performa kualitas gambar pada CT-Scan. Fantom didesain dengan penambahan 24 matriks ruang untuk menempatkan 12 sampel bahan sisipan dengan komposisi berbeda sebagai pengembangan jaringan tiruan organ. Hasil pengukuran kualitas gambar kemudian dibandingkan dengan fantom standar rumah sakit (fantom RS) dengan parameter SNR, dan MTF. Kemudian untuk uji bahan dilakukan dengan mempertimbangkan bilangan CT dan kerapatan electron relatif (RED) pada masing – masing bahan. Selain itu, dianalisa pengaruh tegangan dan arus terhadap kualitas citra yang dihasilkan. Analisis statistik antar SNR dan MTF fantom in-house dan fantom RS tidak menunjukkan perbedaan signifikan. Kemudian dari analisa pengembangan bahan fantom yang dilakukan menunjukkan kesesuaian beberapa bahan material komersial untuk mensimulasikan jaringan organ dengan kesesuaian bilangan CT dan RED. Reduksi arus tabung memiliki dampak yang signifikan terhadap kualitas citra yang diterima. Hal ini menjelaskan bahwa penggunaan tegangan tabung rendah lebih menguntungkan dari segi kualitas citra.
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The use of computed tomography (CT)-scans has become common practice in medical diagnosis in Indonesia. However, the number is not matched by the availability of phantoms to evaluate its performance. This final project aims to describe the design, construction, and evaluation of an in-house cylindrical phantom for quality control (QC) of image quality performance on CT-Scan. The phantom was designed with the addition of 24 space matrices to place 12 material samples with different compositions as the development of organ artificial tissues. The image quality measurement results were compared with a standard hospital phantom (RS phantom) with SNR and MTF parameters. The material test was conducted by considering the CT number and relative electron density (RED) of each material. In addition, the effect of voltage and current on image quality was analyzed. Statistical analysis between SNR and MTF of in-house phantoms and RS phantoms showed no significant difference. Then from the analysis of phantom material development carried out, it shows the suitability of several commercial materials to simulate organ tissue with CT number and RED suitability. Reduction of tube current has a significant impact on the quality of the image received. This explains that the use of low tube voltage is more profitable in terms of image quality.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Bilangan CT, Computed Tomography, Fantom, Kualitas Citra, Polylactic Acid, CT Number, Image Quality, Phantom
Subjects:	Q Science Q Science > QC Physics
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Adinda Ummur Rasyidah
Date Deposited:	08 Aug 2023 08:20
Last Modified:	08 Aug 2023 08:20
URI:	http://repository.its.ac.id/id/eprint/103800

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