We are implementing the use of magnetic resonance (MR) images for head and neck radiotherapy planning, which involves their registration with computed tomography (CT). The quality assurance (QA) of the registration process was an initial step of this program. A phantom was built, and appropriate materials were identified to produce clinically relevant MR T1 and T2 contrast for its constituent "...

Introduction: The lower lip-split incision was first described by Roux in the mid 19th century and was later modified by Trotter and Konig. This incision has been widely used in the field of head and neck oncology surgeries for accessing intraoral tumours along with its extension in neck dissection when combined with mandibulectomy or mandibulotomy. Over the years, this incision has been modifi...

Machines Bill C.H. Chang, Roy C. Ko and Saman K. Halgamuge Mechatronics Research Group Dept. of Mechanical and Manufacturing Engineering The University of Melbourne, Australia bcch,royko,[email protected] Abstract High-speed and high-precision tracking control is required for future contouring machine tools. It was known that by preltering the command trajectory in an appropriate way, the conto...

Raytraced image of the \house on the hill" model. Plate 4 Aluminum milled version of the \house on the hill" model. Plate 1 Raytraced image of the knight model. Plate 2 Aluminum milled version of the knight model. Figure 5: Adaptive isocurves toolpath for the ^ O ooset of the \house on the hill" model. Figure 4: Parallel plane contouring is used to generate 3 axes pockets for rough cutting. (a)...

BACKGROUND The goal of the study is to investigate (18)F-fluorodeoxyglucose positron emission tomography ((18)F-FDG-PET)'s ability to delineate the viable portion of a tumor in an animal model using cross-sectional histology as the validation standard. METHODS Syngeneic mammary tumors were grown in female Lewis rats. Macroscopic histological images of the transverse tumor sections were paired...

d (t) u(t) y(t F((J,q) P(q) ~ I .. ... I I I I I I I I Figure 2: A general architecture of tracking systems using feedforward control I I I I I I I I I I I I I I I I I I I I I ~ Feedforward _ ............. : . Closed LooP--": ; Controller ~ Plant ! In Figure 2, the feedforward controller appears as a pre-filter before the closed-loop system comprising the prevalently adopted is to feed forward ...