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ARCH

Autoregressive Conditional Heteroskedasticity

A statistical measure of the average error between a best fit line and actual data that uses past data to predict future performance. General Autoaggressive Conditional Heteroskedasticity is the most common way of doing this. See also: Fractal Distribution.
References in periodicals archive ?
We are of the view that the accurate prospective radiological reporting of this anomaly is important, especially in the context of endovascular stent procedures of aortic arch lesions, as the left subclavian artery perfusion would in such cases depend on the subclavian steal phenomenon from a normal left vertebral artery.
Diagnostic evaluation of incomplete double aortic arch (right dominance), VSD and PFO comorbidities with cardiac MRI.
Mycotic aneurysm in the aortic arch of a horse associated with invasive aspergillosis.
Thoracic stentgrafts employ a tube configuration, with current limitations involving obtaining an adequate seal in the aortic arch and bulky, rigid, delivery devices.
The cardiovascular defects included tetralogy of fallot (K)F), interrupted aortic arch (IAA), Truncus Arteriosis (TA), ventricular septal defect (VSD), right aortic arch (RAA), overriding aorta, transposition of great arteries (TGA), coarctation of aorta (COA) and aortic valve stenosis.
Patients aged 70 and older have a higher rate of contraindicated anatomy for CAS, including problems in their aortic arch, lesion tortuosity, and calcification, Dr.
A mycotic aneurysm of the ascending aorta and aortic arch induced by salmonella enteritis.
A repeat CT of his chest revealed a superior mediastinal soft tissue mass enveloping the aortic arch and its branches, extending down to the trachea.
The investigators acquired three CT images of each patient; the scans were taken at the levels of the aortic arch, the carina, and the posterior position of the eighth rib.
The chick aortic arch assay represents a major modification of the rat aortic ring assay.
The surgeons would then have to have replaced the aortic valve, route, ascending aorta, proximal part of the aortic arch and the first portion of the main artery to the head and neck.