BACKGROUND Anterior clinoidal meningiomas (ACM) are traditionally approached through transcranial routes. Due to their tendency to extend laterally and their proximity to vital neurovascular structures, the endoscopic transnasal suprasellar approach is still questionable. We present and describe an ACM case that underwent an endoscopic transnasal suprasellar approach, and provide a review of th...

A new online region-based active contour model (ORACM) is proposed in this paper. The classical geode-sic active contour (GAC) model has only local segmentation property, although the Chan–Vese (C–V) model possesses global. An up-to-date active contour model (ACM with SBGFRLS) proposed in Zhang, Zhang, Song, and Zhou (2010) both has the properties of global/local segmentation and incorporates t...

1 Background/Context There is a consensus among the international research community that asynchrony is becoming an increasingly important issue at all levels because of rapid advances in complexity and feature-size-reduction of integrated electronic circuits and advances in distributed multiple computer systems for many real-time applications. (cf. the findings of ITRS-2003 and the CDS Panel h...

Medical imaging continues to permeate the practice of medicine, but automated yet accurate segmentation and labeling of anatomical structures continues to be a major obstacle to computerized medical image analysis. Deformable models, with their roots in estimation theory, optimization, and physics-based dynamical systems, represent a powerful approach to the general problem of medical image seg...

We consider multiplicative monoids of the positive integers defined by a single congruence. If a and b are positive integers such that a≤ b and a2≡ a mod b, then such a monoid (known as an arithmetic congruence monoid or an ACM) can be described as Ma,b = (a+ bN0)∪{1}. In lectures on elementary number theory, Hilbert demonstrated to students the utility of the proof of the Fundamental Theorem o...

We review the construction of almost contact metric (three-) structures on manifolds with a $G_2$ structure. These are interest for certain supersymmetric configurations in string and M-theory. compute torsion SU(3) structure associated to an ACMS apply these computations heterotic systems supersymmetry enhancement. initiate study space ACM3Ss, which is infinite dimensional local product intere...

The previously developed dispersion activity coefficient model (ACM) is extended from a molecular to group contribution (GC) providing results of equal accuracy as the model. Contrary other GC-ACMs presented GC-ACM preserves topology information each molecule in mixture. Therefore, contrast DISQUAC, UNIFAC or COSMOSAC, where eliminated by assignment groups construction sigma-profiles, this new ...

Arrhythmogenic cardiomyopathy (ACM) is a group of arrhythmogenic disorders the myocardium that are not caused by ischemic, hypertensive, or valvular heart disease. The clinical manifestations ACMs may overlap those dilated cardiomyopathy, complicating differential diagnosis. In several ACMs, ventricular tachycardia (VT) has been observed at an early stage, regardless severity Therefore, prevent...

It has been believed that mammalian adult cardiomyocytes (ACMs) are terminally-differentiated and are unable to proliferate. Recently, using a bi-transgenic ACM fate mapping mouse model and an in vitro culture system, we demonstrated that adult mouse cardiomyocytes were able to dedifferentiate into cardiac progenitor-like cells (CPCs). However, little is known about the molecular basis of their...