Evaluasi Dosimetri 3D Printed Phantom Thorax-Abdomen Ibu Hamil Untuk Aplikasi Radiodiagnostik

Jannah, Fathul (2022) Evaluasi Dosimetri 3D Printed Phantom Thorax-Abdomen Ibu Hamil Untuk Aplikasi Radiodiagnostik. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Modalitas pencitraan seperti computed tomography (CT) adalah salah satu teknologi untuk menghasilkan gambar beresolusi tinggi. Citra yang dihasilkan oleh CT dapat digunakan untuk mendiagnosis penyakit pada pasien. Selama kehamilan, CT mungkin juga diperlukan untuk mengetahui penyakit dalam, terutama jika informasi dari teknik pencitraan lain seperti ultrasound dan magnetic resonance imaging (MRI) masih kurang memadai. Untuk pemeriksaan CT dada–abdomen–panggul (CAP), kemungkinan janin diiradiasi secara langsung, sehingga potensi paparan pada janin harus dipertimbangkan. Oleh karena itu diperlukan phantom sebagai media untuk meneliti aplikasi radiodiagnostik pada masa kehamilan. Penelitian ini bertujuan untuk mengembangkan 3D phantom thorax–abdomen pada aplikasi radiodiagnostik. Aspek yang diteliti antara lain proses fabrikasi dan validasi dosimetri menggunakan CT–Scan dan pengaruh moduliasi arus pada dosis yang diterima pasien. Validasi 3D phantom thorax–abdomen meliputi kualitas citra dan validasi dosimetri menggunakan film XRQA–2. Dari penelitian yang dilakukan, dapat diketahui bahwa silicone rubber dapat digunakan sebagai pengganti simulasi kehamilan serta estimasi dosis yang diterima oleh janin masih berada pada batas toleransi 50 mGy. Penggunaan modulasi arus tabung mampu mengurangi dosis yang diterima janin secara signifikan tanpa mengurangi kualitas citra. ================================================================================================ Imaging modalities such as computed tomography (CT) are technologies to produce high-resolution images. The image generated by CT can be used to diagnose disease in patients. CT may also be needed during pregnancy to detect internal disease, especially if the informations from other imaging techniques such as ultrasound and magnetic resonance imaging (MRI) are insufficient. For chest– abdomen–hip (CAP) CT examination, the possibility of the fetus being irradiated directly, so the potential for exposure to the fetus should be considered. Therefore, the phantom is needed as a medium for researching radiodiagnostic applications during pregnancy. This study aims to develop a 3D phantom thorax–abdomen in radiodiagnostic applications. Aspects that be investigated include the fabrication process and dosimetry validation using CT-Scan and the effect of tube current modulation on the dose received by the patient. 3D phantom thorax–abdomen validation includes image quality and dosimetry validation using XRQA–2 film dosimeter. The research conducted shows that silicone rubber can be used as a substitute for simulation of pregnancy, and the estimated dose received by the fetus is still within the tolerance limit of 50 mGy. The use of tube current modulation could significantly reduce the fetus's dose received without reducing image quality

Item Type: Thesis (Masters)
Uncontrolled Keywords: CT–Scan, Diagnostik, Dosimetri, Phantom , Diagnostic, Dosimeter
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Q Science > QC Physics > QC795.5 Radioactivity and radioactive Instruments and apparatus (General)
R Medicine > RG Gynecology and obstetrics
Divisions: Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45101-(S2) Master Thesis
Depositing User: Fathul Jannah
Date Deposited: 14 Feb 2022 04:48
Last Modified: 14 Feb 2022 04:48
URI: https://repository.its.ac.id/id/eprint/93876

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