Now showing items 1-10 of 288
Subcutaneous tissue response to titanium, poly(ϵ‐caprolactone), and carbonate‐substituted hydroxyapatite‐coated poly(ϵ‐caprolactone) plates: A rabbit study
(Wiley Subscription Services, Inc., A Wiley Company, 2013-08)
The aim of this study was to evaluate the soft tissue response to poly(ϵ‐caprolactone) (PCL) implants with and without carbonate‐substituted hydroxyapatite (CHA) coating compared to the commonly used titanium alloy ...
Statistical Emission Image Reconstruction for Randoms-Precorrected PET Scans Using Negative Sinogram Values
(IEEE, 2003-10-19)
Many conventional PET emission scans are corrected for accidental coincidence (AC) events, or randoms, by real-time subtraction of delayed-window coincidences, leaving only the randoms-precorrected data available for image ...
Polysorbate cationic synthetic vesicle for gene delivery
(Wiley Subscription Services, Inc., A Wiley Company, 2011-03-01)
Synthetic nonionic surfactant vesicles (niosomes) are a colloidal system with closed bilayer structures, displaying distinct advantages in stability and cost compared with liposomes. In this article, polysorbate cationic ...
Effect of Including Detector Response in SPECT Quantification of Focal I-131 Therapy
(IEEE, 2001-11-04)
With a regularized strip-integral (1D) SAGE reconstruction, circular-orbit SPECT estimates of phantom focal 131-I activity vary with changes in the level of uniform background. They also vary with changes in image resolution ...
Intensity-Based Image Registration Using Robust Correlation Coefficients
(IEEE, 2004-11-01)
The ordinary sample correlation coefficient is a
popular similarity measure for aligning images from the same
or similar modalities. However, this measure can be sensitive to
the presence of “outlier” objects that appear ...
Incorporation of System Resolution Compensation (RC) in the Ordered-Subset Transmission (OSTR) Algorithm for Transmission Imaging in SPECT
(IEEE, 2006-06-26)
In order to reconstruct attenuation maps with improved spatial resolution and quantitative accuracy, we developed an approximate method of incorporating system resolution compensation (RC) in the ordered-subset transmission ...
Numerical methods for polyline‐to‐point‐cloud registration with applications to patient‐specific stent reconstruction
(SIAMWiley Periodicals, Inc., 2018-03)
We present novel numerical methods for polyline‐to‐point‐cloud registration and their application to patient‐specific modeling of deployed coronary artery stents from image data. Patient‐specific coronary stent reconstruction ...
Controlled nucleation of hydroxyapatite on alginate scaffolds for stem cell-based bone tissue engineering
(Wiley Subscription Services, Inc., A Wiley Company, 2010-10)
Current bone tissue engineering strategies aim to grow a tissue similar to native bone by combining cells and biologically active molecules with a scaffold material. In this study, a macroporous scaffold made from the ...
Endoscopic Ultrasound Spectrum Analysis for In Vivo Characterization of Pancreatic and Lymph Node Tissue: A Pilot Study
(Elsevier, 2007-12)
Background: EUS is limited by variability in the examiner’s subjective interpretation of
B-scan images to differentiate between normal, inflammatory, and malignant tissue. By using information otherwise discarded by ...
Fast kVp-Switching Dual Energy CT for PET Attenuation Correction
(IEEE, 2009-10-24)
X-ray CT images are used routinely for attenuation correction in PET/CT systems. However, conventional CT-based attenuation correction (CTAC) can be inaccurate in regions containing iodine contrast agent. Dual-energy (DE) ...