Certain regions of the body can be relatively difficult to image optimally by computed tomography (CT). The lower neck falls into this category. A routine transverse image at this level includes the shoulders, which can cause beam hardening [1] . Beam hardening reduces subject contrast and often produces streak artifacts between the shoulders [2, 3]. This image degradation is especially trouble...

Previous results indicate that arterial pulse pressure modulates release of arginine vasopressin (AVP) in humans. The hypothesis was therefore tested that an increase in arterial pulse pressure is the stimulus for suppression of AVP release during central blood volume expansion by water immersion. A two-step immersion model (n = 8) to the xiphoid process and neck, respectively, was used to atta...

OBJECTIVE To identify predictors of levels II and Vb involvement in papillary thyroid cancer (PTC) with lateral neck metastasis. DESIGN Large case series. SETTING High-volume tertiary care hospital. PATIENTS Consecutive sample of 185 patients who underwent 248 selective neck dissections of at least levels II to V for pathologically proven PTC. MAIN OUTCOME MEASURES Significant independe...

PURPOSE A definition of cut-off points for nodal size is essential to determine whether cervical lymph nodes are metastatic or not. Because the currently used size criteria are defined for random populations of patients with head and neck cancer, we set out to study whether these criteria are optimal for patients without palpable metastases in different levels of the neck We defined optimal siz...

UNLABELLED Menstrual status, both past and current, has been established as an important determinant of bone mineral density (BMD) in young exercising women. However, little is known regarding the association between the cumulative effect of menstrual status and indices of bone health beyond BMD, such as bone geometry and estimated bone strength. PURPOSE This study explores the association be...

In order to determine the effect of Valsalva maneuver and head rotation on the internal jugular vein (IJV) diameter and cross-sectional area and overlap with the carotid artery (CA) and find the best technique for safe cannulation of the IJV and decrease the risk of CA puncture, the diameter of both the IJV and the CA and percentage of overlap between the two vessels and cross-sectional are...

Introduction: Modular head-neck total hip arthroplasty (THA) offers several benefits for orthopaedic surgeons, including intraoperative flexibility and the ability to change the head at revision surgery [1]. However, modularity at the head-neck taper, especially the use of metallic heads and stems, can lead to fretting and corrosion at the taper junction, leading to metal ions and debris releas...

PURPOSE To compare anatomic, radiographic, and computed tomographic (CT) measurements of the proximal femur in an Indian population. METHODS 26 left and 24 right dried cadaveric femurs were obtained. Each femur was divided into segments at 10 cross-sectional levels from proximal to distal. At each level, anteroposterior (AP), lateral, 45-degree internal oblique, and 45-degree external oblique...

to determine the droplet characteristics of agricultural spray nozzles through water sensitive paper (wsp), the non-circular and overlapped spots appearing on the water sensitive paper surfaces are eliminated. in the conventional approach, the procedure is done according to the subjective self determined estimation of the operator. the objective of this study was to develop a practical alternat...

BACKGROUND During anterolateral thigh flap harvest, inadequate perforators may necessitate modification of the flap design, exploration of the contralateral thigh, or additional flap harvest. Computed tomographic angiography may facilitate perforator mapping and optimize flap design. The authors performed this pilot study to determine the predictive power of computed tomographic angiography in ...