Spherical operator classification for coronary artery extraction
نویسندگان
چکیده
منابع مشابه
Anxiety levels in patients candidate for coronary artery angiography
Introduction: One of the diagnostic and therapeutic procedures in coronary artery disease is coronary artery angiography. Due to the invasiveness of this method, most patients experience anxiety before it is performed. Anxiety causes physiological responses in the body that can increase the incidence of complications in these patients. This study aimed to investigate anxiety levels in patients ...
متن کاملStrong Converse Inequality for a Spherical Operator
In the paper titled as “Jackson-type inequality on the sphere” 2004 , Ditzian introduced a spherical nonconvolution operator Ot,r , which played an important role in the proof of the wellknown Jackson inequality for spherical harmonics. In this paper, we give the lower bound of approximation by this operator. Namely, we prove that there are constants C1 and C2 such that C1ω2r f, t p ≤ ‖Ot,rf − ...
متن کاملEdge Based Tube Detection for Coronary Artery Centerline Extraction
The extraction of the coronary artery central lumen lines from CTA datasets is a necessary prerequisite for the computerized assessment of heart related disease. In this work, we present an automatic approach for this task that consists of generic methods for detection of tubular objects, extraction of their centerlines, grouping of the single centerlines into complete tree structures, and some...
متن کاملThe Spherical Tensor Gradient Operator
The spherical tensor gradient operator Y l (∇), which is obtained by replacing the Cartesian components of r by the Cartesian components of ∇ in the regular solid harmonic Y l (r), is an irreducible spherical tensor of rank l. Accordingly, its application to a scalar function produces an irreducible spherical tensor of rank l. Thus, it is in principle sufficient to consider only multicenter int...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Bio-Medical Materials and Engineering
سال: 2014
ISSN: 0959-2989,1878-3619
DOI: 10.3233/bme-141147