BACKGROUND To investigate the radiation dose and image quality for iterative reconstruction combined with the CARE kV technique in chest computed tomography (CT) scanning for physical examination. METHODS A total of 130 patients who underwent chest CT scanning were randomly chosen and the quality reference value was set as 80 mAs. The scanning scheme was set and the patients were randomly div...

‘The stem-cell genie is out of the research bottle,’ columnist William Safire wrote on July 16 in the New York Times editorial page, continuing, ‘If we command it sensibly, this unexpected servant will help us lead much healthier, longer lives.’ Safire is not alone in having these expectations. Since research using embryonic stem cells has been dragged into the limelight of public debate, its s...

We propose two variable weighted iterative reconstruction algorithms (VW-ART and VW-OS-SART) to improve the algebraic reconstruction technique (ART) and simultaneous algebraic reconstruction technique (SART) and establish their convergence. In the two algorithms, the weighting varies with the geometrical direction of the ray. Experimental results with both numerical simulation and real CT data ...

Reconstruction of a facial defect is a complex modality either surgically or prosthetically, depending on the site, size, etiology, severity, age, and the patient’s expectation. Loss of an auricle, in the presence of an auditory canal, affects hearing, because the auricle gathers sound and directs it into the canal. The auricle acts as a resonator to slightly amplify lower frequency sound...

SAFIRE-A (Spectroscopy of the Atmosphere using Far InfraRed Emission – Airborne) is a Far Infrared Fourier Transform spectrometer operating onboard the M-55 Geophysica stratospheric aircraft. The spectrometer is one of the instruments participating to the scientific chemical flights of the ESABC (ENVISAT Stratospheric Aircraft and Balloon campaigns) campaigns held in July and October 2002 from ...

Background and Aim: DTI-based tractography could help us to visualize the spatial relation of fiber tracts to brain lesions. Several factors may interfere with the procedure of diffusion-based tractography, especially in brain tumors. The aim of the current study is to discuss several solutions to improve the procedure of fiber reconstruction adjacent or inside brain lesions. Illustrative cases...

abstract   the perfect method for breast reconstruction would be safe, reliable, reproducible, applicable to all patients, and would have no donor site morbidity. the ideal reconstructed breast would provide symmetric, permanent, and natural results. there has been development and refinement of autogenous methods of breast reconstruction throughout the literature. the tram flap remains the most...

BACKGROUND We present a novel method for augmenting the standard C-V flap used for nipple reconstruction with a free dermal graft which aims to improve the appearance of the nipple reconstruction, decrease loss of projection and improve patient satisfaction overall. METHODS The surgical technique for performing a free dermal graft augmentation of a CV flap is described. All patients who unde...