Search

Your search keyword '"Bihong T. Chen"' showing total 103 results
Start Over Author "Bihong T. Chen"
103 results on '"Bihong T. Chen"'

101. Molecular imaging based on differential protein content in differentiating glioma from radiation necrosis

Author

Bihong T. Chen, Rahul Jandial, and Vincent J. Duenas

Subjects
Diagnostic Imaging, Pathology, medicine.medical_specialty, Protein content, Diagnosis, Differential, Necrosis, Text mining, Glioma, medicine, Animals, Humans, Radiation Injuries, business.industry, Brain Neoplasms, Brain, Proteins, medicine.disease, Magnetic Resonance Imaging, Rats, Radiation necrosis, Surgery, Neurology (clinical), Molecular imaging, Neoplasm Recurrence, Local, business, Differential (mathematics)
Published
2011

102. Nonparotid parapharyngeal oncocytoma: A case report and literature review

Author

Sean Lau, Bihong T. Chen, Ellie Maghami, and James L. Barrese

Subjects
Male, Pathology, medicine.medical_specialty, Adenoma, Biopsy, Fine-Needle, Prostate cancer, stomatognathic system, Biopsy, medicine, Parapharyngeal space, Adenoma, Oxyphilic, Humans, Oncocytoma, Aged, Oxyphil Cells, medicine.diagnostic_test, Salivary gland, business.industry, Pharyngeal Neoplasms, medicine.disease, Parotid gland, medicine.anatomical_structure, Otorhinolaryngology, Positron emission tomography, Positron-Emission Tomography, business
Abstract

Oncocytoma is a rare, benign salivary neoplasm composed of mitochondria-rich cells called oncocytes. Although oncocytoma usually occurs in the parotid glands, it has much less commonly been reported to occur in minor salivary gland tissues. Although there have been a few reported cases of oncocytomas being found in the parapharyngeal space, most if not all cases seem to be extensions of deep lobe parotid tumors. We present a case of a 73-year-old man with a previous history of prostate cancer that had the incidental finding of an (18)F-fluorodeoxyglucose (FDG) image of a highly avid parapharyngeal space lesion noted on a follow-up positron emission tomography-computed tomography (PET/CT) scan. Excision of the mass, through a transcervical approach, demonstrated it to be an isolated oncocytoma of the parapharyngeal space, noncontiguous with the parotid gland. Based on our literature search, this may be the first such reported case. A brief review of the available literature examining the known body of knowledge regarding these neoplasms is presented.

Published
2009

103. Structural and practical identifiability of contrast transport models for DCE-MRI.

Author

Martina Conte, Ryan T Woodall, Margarita Gutova, Bihong T Chen, Mark S Shiroishi, Christine E Brown, Jennifer M Munson, and Russell C Rockne

Subjects
Biology (General), QH301-705.5
Abstract

Contrast transport models are widely used to quantify blood flow and transport in dynamic contrast-enhanced magnetic resonance imaging. These models analyze the time course of the contrast agent concentration, providing diagnostic and prognostic value for many biological systems. Thus, ensuring accuracy and repeatability of the model parameter estimation is a fundamental concern. In this work, we analyze the structural and practical identifiability of a class of nested compartment models pervasively used in analysis of MRI data. We combine artificial and real data to study the role of noise in model parameter estimation. We observe that although all the models are structurally identifiable, practical identifiability strongly depends on the data characteristics. We analyze the impact of increasing data noise on parameter identifiability and show how the latter can be recovered with increased data quality. To complete the analysis, we show that the results do not depend on specific tissue characteristics or the type of enhancement patterns of contrast agent signal.

Published
2024
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results