Browsing by Subject "Biophysics, Medical"
Now showing items 1-6 of 6
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Accuracy of Planar Dosimetry for Volumetric Modulated Arc Therapy Quality Assurance
(2011)With the advent of new, more efficient, rotational therapy techniques such as volumetric modulated arc therapy (VMAT), radiation therapy treatment precision requires evolving quality assurance. Two dimensional (2D) detector ... -
Development of Radiochromic Film for Spatially Quantitative Dosimetric Analysis of Indirect Ionizing Radiation Fields
(2010)Traditional dosimetric devices are inherently point dose dosimeters (PDDs) and can only measure the magnitude of the radiation exposure; hence, they are one-dimensional (1D). To measure the magnitude and spatial location ... -
Investigating Functional Breast Image Quality and Quantification with a Dedicated SPECT-CT System
(2011)This work investigates phantom and subject positioning as well as collecting data with a variety of angular sampling and acquisition trajectories. The overall goal of this work has been to utilize the dedicated, breast SPECT-CT ... -
Multimodality Functional Imaging in the Rodent Lungs
(2008-11-12)The ability to image ventilation and perfusion enables pulmonary researchers to study functional metrics of gas exchange on a regional basis. There is a huge interest in applying imaging methods to study the large number ... -
OPTIMIZATION OF IMAGE GUIDED RADIATION THERAPY USING LIMITED ANGLE PROJECTIONS
(2009)Digital tomosynthesis (DTS) is a quasi-three-dimensional (3D) imaging technique which reconstructs images from a limited angle of cone-beam projections with shorter acquisition time, lower imaging dose, and less mechanical ... -
The Effect of Structural Microheterogeneity on the Initiation and Propagation of Ectopic Activity in Cardiac Tissue
(2010)Cardiac arrhythmias triggered by both reentrant and focal sources are closely correlated with regions of tissue characterized by significant structural heterogeneity. Experimental and modeling studies of electrical activity ...
