We present a case of unresectable cancer of the base of tongue treated with hypofractionated 3D conformal radiotherapy and concomitant chemotherapy. Based on the excellent tumour response in this radiotherapy regimen and international experience in short course treatments we shortly reviewed, we propose that this therapeutic approach could be considered in a curative setting for patients unsuit...

This Ph.D thesis work is dedicated to 3D facial surface analysis, processing as well as to the newly proposed 3D face recognition modality, which is based on mapping techniques. Facial surface processing and analysis is one of the most important steps for 3D face recognition algorithms. Automatic anthropometric facial features localization also plays an important role for face localization, fac...

POLICY STATEMENT BlueCHiP for Medicare and Commercial Products: Breast Intensity-modulated radiotherapy (IMRT) may be considered medically necessary as a technique to deliver whole-breast irradiation in patients receiving treatment for left-sided breast cancer after breast conserving surgery, and for individuals with large breasts when treatment planning with 3-dimensional (3D) conformal result...

Parameterization of 3D manifold mesh data involves embedding the mesh in some natural parametric domain, such as the plane or the sphere. Parameterization is important for many applications in geometry processing, including texture mapping, remeshing and morphing. The main objective is to generate a bijective mapping between the mesh surface and the parametric domain, which minimizes the distor...

Green coordinates define a special representation of a point inside a closed polygon in terms of its vertices and the normals to its edges (faces). This representation has been found to be very useful for object manipulation in computer graphics. The mapping defined by Green coordinates is shown to be analytic. It has a closed form formula in 2D and 3D, and it can be extended analytically throu...

This report covers the application of a piecewise-linear approximation to a quadratic program, QP. In this case the program is one that solves 3D conformal radiation treatment problem and returns optimal beam weights. Four different methods of approximating the quadratic problem were tested and compared to each other and the original problem. The methods are δ method, λ method, σ method, and γ ...

Subfrontal schwannoma not arising from the cranial nerves are rare tumors. A 19-year-old man presented with a large subfrontal extra-axial enhancing mass with a preoperative diagnosis of skull base meningioma. A subtotal resection of the tumor mass was carried out. Microscopic examination revealed it to be a schwannoma. The residual tumor was treated with fractionated three-dimensional conforma...

BCT: Breast Conserving Therapy; BCS: Breast Conserving Surgery; WBI: Whole Breast Irradiation; APBI: Accelerated Partial Breast Irradiation; START: Standardization of Breast Radiotherapy; ASBS: The American Society of Breast Surgeons; 3D-CRT: 3-Dimensional Conformal Radiotherapy; IMRT: Intensity Modulated Radiation Therapy; RTOG: Radiation Therapy Oncology Group; RAPID: Randomized Trial Of Acce...

Ji-yi Zhang 1, Peng-cheng Yin 2, Gang Li 1,*, He-he Gu 1, Hua Zhao 1 and Jian-chun Fu 1 1 School of Environmental Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221008, China; [email protected] (J.-Y.Z.); [email protected] (H.-H.G.); [email protected] (H.Z.); [email protected] (J.-C.F.) 2 Bureau of Land and Resources of Xuzhou, Xuzhou 221006, China; [email protected] * C...

Computations of 3D Euclidean geometry can be performed using various computational models of different effectiveness. In this paper we compare five alternatives: 3D linear algebra, 3D geometric algebra, a mix of 4D homogeneous coordinates and Plücker coordinates, a 4D homogeneous model using geometric algebra, and the 5D conformal model using geometric algebra. Higher dimensional models and mod...