Impingement after reverse shoulder arthroplasty (RSA) is believed to occur from repetitive contact in adduction between the humeral component and the inferior scapular pillar. The primary purpose of this biomechanical study was to confirm the presence of different types of impingement and to examine which daily-life movements are responsible for them. A secondary aim was to provide recommendati...

Ten radiograph signs were assessed by two experts for their usefulness in the diagnosis of small solitary peripheral pulmonary nodules less than 3 cm. The ten categories included notching, spicula formation, pleural indentation, vascular convergence, contour, paleness, homogeneity, cavitation, air bronchogram, and calcification. The cases included 134 lung cancers and 44 benign lung lesions res...

Charging and topography evolution simulations during plasma etching of dense line-and-space patterns reveal that multiple-feature effects influence critically the etch profile characteristics of the various lines. By including neighboring lines, the simulation predicts a peculiar notching behavior, where the extent of notching varies with the location of the line. Feature-scale modeling can no ...

Numerical simulations of charging and profile evolution during gate electrode overetching in high density plasmas have been performed to investigate the effect of long conductive sidewalls on profile distortion ~notching!. The results reveal that the angle of electron irradiance of the conductive portion of the sidewalls affects profoundly the charging potential of the gates. Larger angles, obt...

Postero-anterior chest roentgenograms in 17 of 20 patients with coarctation of the aorta showed widening of the left upper mediastinal shadow attributed to dilatation of the left subclavian artery; pulsations of this vessel were evident in 12 of 13 cases with roentgenkymograms. In 3 of the latter cases rib notching was absent or equivocal. The subclavian pulsations may be observed fluoroscopica...

A wideband planar monopole antenna with an L-shape ground plane is presented. The antenna also has a frequency-notching characteristic. By etching a half-wavelength U-shaped slot in the interior of the radiation element, the frequency-notching characteristic has been created. This paper presents the design and experimental results of the proposed antenna. Moreover, the study also investigates t...

Neurofibromatosis Type I (NFI) is a relatively common hereditary, autosomal dominant neurocutaneous condition. It is a benign peripheral nerve sheath tumour arising from Schwann cells and peripheral fibroblasts. Even though it is a neurocutaneous disorder, NF I has significant skeletal manifestations. Oral and maxillofacial skeletal structures are also often involved in the form of deepening of...

In a 10-month period 92 patients have been studied for the occurrence of highfrequency notching in orthogonal electrocardiographic leads X, Y, and Z obtained by high-frequency, high-speed techniques. The same patients were studied radiographically with barium, with routine electrocardiograms, hemodynamically at cardiac catheterization and, in many instances, with left ventricular angiograms. Si...