We construct a numerical scheme based on the Liouville equation of geometric optics coupled with the Geometric Theory of Diffraction (GTD) to simulate the high frequency linear waves diffracted by a corner. While the reflection boundary conditions are used at the boundary, a diffraction condition, based on the GTD theory, is introduced at the vertex. These conditions are built into the numerica...

We show how to apply the techniques of microlocal analysis to the Potter-Moses attributed scattering center model, which is based on the Geometrical Theory of Diffraction (GTD). The microlocal methods enable us to determine how scattering centers will appear in the radar data. We show also how to extend the model to some multiple-scattering events, and we apply the microlocal techniques to the ...

OBJECTIVE To assess quality of life (QoL) and psychological aspects in patients with gestational trophoblastic disease (GTD). METHODS This cross-sectional self-report study was conducted among 54 women. Validated question-naires assessed QoL (WHO-QOL-bref), symptoms of depression (Beck Depression Inventory [BDI]) and anxiety (State-Trait Anxiety Inventory [STAI]). RESULTS Most patients rate...

Gestational trophoblastic disease (GTD) is characterized by abnormal proliferation of pregnancy-associated trophoblastic tissue with malignant potential. GTD covers a spectrum of tumors and tumor-like conditions and may occur in a benign form as hydatiform mole or as malignancy in the form of invasive mole or choriocarcinoma. GTD has become a curable malignant disease since the introduction of ...