Molecular form factor data for tissue equivalent materials

Abstract

In the diagnostic X-ray energy range, elastic (Coherent) scattering is dominant and can be obtained using an appropriate form factor. When experimental Form Factor data is not available at certain momentum transfer values, molecular form factor data that can be compatible with experimental data should be theoretically obtained. Using these molecular form factor data, molecular coherent scattering coefficients can be calculated, and linear attenuation coefficients of tissue equivalent structures can be estimated. In this study, PMMA, CIRS 70/30, CIRS 50/50, CIRS 30/70, RMI 454, and BR 12, which are equivalent complex molecular structures to human breast tissue, were examined, and the theoretical molecular form factor F(x) values compatible with the experimental form factor values for each were obtained. We believe that our results will find a significant place in the literature and will be beneficial for our future studies and also in the studies of other researchers who make models.

Keywords

• Tissue
• equivalent material
• form factor

Doku eşdeğeri materyaller için moleküler form faktör verileri

Abstract

Tanısal x-ışını enerji aralığında, elastik (koherent) saçılma baskın olup uygun form faktörü kullanılarak elde edilebilmektedir. Deneysel Form Faktör verilerinin mevcut olmadığı belirli momentum transfer değerlerinde, deneysel verilerle uyumlu olabilecek şekilde moleküler form faktör verileri teorik olarak elde edilmelidir. Bu moleküler form faktör verileri kullanılarak moleküler koherent saçılma katsayıları hesaplanabilmekte ve doku eşdeğeri yapıların lineer zayıflama katsayıları tahmin edilebilmektedir. Bu çalışmada, insan meme dokusuna eşdeğer kompleks moleküler yapılar olan PMMA, CIRS 70/30, CIRS 50/50, CIRS 30/70, RMI 454 ve BR 12 incelenmiş ve her birine ait, deneysel form faktörleri ile uyumlu olan moleküler form faktör F(x) değerleri teorik olarak elde edilmiştir. Sonuçlarımızın daha ileriki çalışmalarımızda ve ayrıca modellemeler yapan diğer araştırmacıların çalışmalarında kullanılması suretiyle literatürde geniş yer bulacağına ve yarar sağlayacağına inancımız yüksektir.

Keywords

• Doku
• eşdeğer materyal
• form faktör

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