Çok katmanlı silindirik yapılar için termoakustik dalga denkleminin ters çözümü
Yükleniyor...
Dosyalar
Tarih
2017-06-27
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
IEEE
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Termoakustik görüntüleme, elektromanyetik enerji uyarımı ile ultrason dalgaları oluşumunu sağlayan yeni bir yöntemdir. Bu sistemin görüntüleme işlemi termoakustik dalga denkleminin ters çözümüne dayanmaktadır. Ters çözümde görüntülenecek dokunun homojen yapıda olduğu varsayımı, görüntü kalitesinin azalmasına neden olur. Bu çalışmada, meme ve beyinin görüntülemesinde uygulanabilecek üç boyutlu eş merkezli silindirik çok katmanlı yapılar için termoakustik dalga denkleminin analitik ters çözümü elde edilmiştir. Çözümü sayısal olarak test etmek için, noktasal kaynaklar içeren üç katmanlı fantom kullanılarak numerik simulasyonlar elde edilmiştir.
Thermoacoustic imaging is a new modality of generating ultrasonic waves with excitation of electromagnetic pulsed energy. Thermoacoustic imaging is based on the inverse soluion of thermoacoustic wave equation. Homogeneous assumption of tissue to be imaged results in degradation of image qualtiy. In this study, we obtain an analytical inverse solution of thermoacoustic wave equation for 3-dimensional concentric cylindrical multi layer structures. This solution can be applied for imaging of breast and brain. To test our solution, we use a 3-layer test phantom consisting of point sources in numerical simulations.
Thermoacoustic imaging is a new modality of generating ultrasonic waves with excitation of electromagnetic pulsed energy. Thermoacoustic imaging is based on the inverse soluion of thermoacoustic wave equation. Homogeneous assumption of tissue to be imaged results in degradation of image qualtiy. In this study, we obtain an analytical inverse solution of thermoacoustic wave equation for 3-dimensional concentric cylindrical multi layer structures. This solution can be applied for imaging of breast and brain. To test our solution, we use a 3-layer test phantom consisting of point sources in numerical simulations.
Açıklama
Anahtar Kelimeler
Termoakustik görüntüleme, Ters problem çözümü, Tıbbi görüntüleme, 3D concentric cylindrical multilayer structures, 3-dimensional, 3-layer test phantom, Acoustics, Biological tissues, Biomedical imaging, Biomedical ultrasonics, Dogs, Electric excitation, Electromagnetic pulse, Electromagnetic pulsed energy, Image qualtiy, Image reconstruction, Inverse problems, Inverse solution, Inverse source problem, Mathematics, Medical image processing, Medical imaging, Multilayer structures, Optoacoustic imaging, Phantoms, Photoacoustic effect, Photoacoustic microscopy, Point sources, Propagation, Pulsed energy, Reconstruction, Signal processing, Thermoacoustic imaging, Thermoacoustic wave equation, Thermo-acoustic waves, Thermoacoustics, Tomography, Ultrasonic imaging, Ultrasonic waves, Wave equations
Kaynak
2017 25th Signal Processing and Communications Applications Conference, SIU 2017
WoS Q Değeri
N/A
Scopus Q Değeri
N/A
Cilt
Sayı
Künye
Elmas, D., Ünalmış Uzun, B., İdemen, M. M. & Karaman, M. (2017). Inverse solution of thermoacustic wave equation for cylindirical multi-layer mediums. Paper presented at the 2017 25th Signal Processing and Communications Applications Conference, SIU 2017, 1-4. doi:10.1109/SIU.2017.7960734
