Deteksi Jumlah Percabangan pada Trabecular Bone Menggunakan COSFIRE Filter untuk Identifikasi Osteoporosis
Abstract
Tulang rahang adalah salah satu tulang yang terkena pengaruh penurunan kepadatan mineral tulang yang diakibatkan oleh osteoporosis. Karena itu, citra radiograf panoramik gigi dapat digunakan untuk mengidentifikasi osteoporosis. Beberapa penelitian sebelumnya menunjukkan bahwa jumlah percabangan pada struktur tulang berbeda antara pasien normal dan pasien dengan kepadatan mineral tulang yang rendah. Namun, kontras yang rendah dan terdapatnya noise pada citra radiograf panoramik membuat ekstraksi struktur tulang menjadi sulit. Untuk itu, dibutuhkan sebuah metode untuk memperkuat struktur pada tulang tersebut.
Pada penelitian ini, diusulkan sebuah metode untuk mendeteksi percabangan pada trabecular bone dengan enhancement pada struktur tulang menggunakan metode line operator. Dari struktur tersebut, lokasi percabangan dideteksi menggunakan metode COSFIRE. Kemudian, jumlah percabangan digunakan untuk membedakan antara radiograf pasien normal dan radiograf pasien osteoporosis.
Pengujian klasifikasi dilakukan pada 98 citra yang terdiri atas 41 citra pasien osteoporosis dan 57 pasien normal. Hasilnya adalah sensitivity, specificity, dan akurasi masing-masing sebesar 0,90244, 0,23214, dan 0,51546. Hasil tersebut menunjukkan bahwa metode yang diusulkan menghasilkan performa yang lebih baik daripada metode sebelumnya.
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DOI: https://doi.org/10.30591/jpit.v5i2.1842
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