نتایج جستجو برای: slice

تعداد نتایج: 17863  

Journal: :Topology and its Applications 2022

Shake slice generalizes the notion of a link, naturally extending shake knots to links. There is also relative version, concordance, that link concordance. We show if two links are concordant, then their zero surgery manifolds homology cobordant. Then we give several obstructions being slice; for instance, Arf invariants vanish both and each component. Finally bounds disjoint disks in 4-ball he...

Journal: :Medical physics 1999
H Hu

The multi-slice CT scanner refers to a special CT system equipped with a multiple-row detector array to simultaneously collect data at different slice locations. The multi-slice CT scanner has the capability of rapidly scanning large longitudinal (z) volume with high z-axis resolution. It also presents new challenges and new characteristics. In this paper, we study the scan and reconstruction p...

2015
Stephen Hamshere Daniel A. Jones Cyril Pellaton Danielle Longchamp Tom Burchell Saidi Mohiddin James C. Moon Jens Kastrup Didier Locca Steffen E. Petersen Mark Westwood Anthony Mathur

BACKGROUND AAR measurement is useful when assessing the efficacy of reperfusion therapy and novel cardioprotective agents after myocardial infarction. Multi-slice (Typically 10-12) T2-STIR has been used widely for its measurement, typically with a short axis stack (SAX) covering the entire left ventricle, which can result in long acquisition times and multiple breath holds. This study sought to...

2008
R. Lorenz J. Bock A. F. Stalder C. Benk J. Hennig M. Markl

Fig. 4: 3D Streamlines during peak systole and late diastole in the patient and the in-vitro model. slice 1 slice 2 slice 3 slice 4 slice 5 slice 6 slice 7 slice 8 flow [ml/cycle] 74 (36) 70 (34) 60 (35) 55 (37) 51 (38) 46 (40) 48 (35) 49 (35) peak flow [ml/s] 374 (241) 368 (255) 306 (260) 267 (267) 241 (281) 206 (288) 236 (246) 226 (258) helicity [%] 56 (63) 64 (62) 67 (63) 71 (60) 60 (54) 55 ...

2013
Su-Kiat Chua Jun-Jack Cheng Min-Tsung Tseng Chiung-Zuan Chiu Che-Ming Chang Shih-Huang Lee Sheng-Chang Lin Jer-Young Liou

Purpose: The newer 256-slice computed tomography coronary angiography (CTCA) has the capability of improving diagnostic performance in the detection of obstructive coronary artery disease (CAD) compared to 64-slice CTCA. The aim of this study was to compare the diagnostic performance of 64versus 256-slice CTCA in two similar populations. Methods: Our study included 120 consecutive patients who ...

2013
JOHN ULLMAN John Ullman

We introduce a variant of the slice spectral sequence which uses only regular slice cells, and state the precise relationship between the two spectral sequences. We analyze how the slice filtration of an equivariant spectrum that is concentrated over a normal subgroup is related to the slice filtration of its geometric fixed points, and use this to prove a conjecture of Hill on the slice filtra...

Journal: :Research in Computing Science 2017
Juan C. Moreno-Torres Marco A. Moreno-Armendáriz

The all-time behavior provides a robustness algorithm by allowing it to be interrupted at any point in the process, while ensuring that the best possible response is delivered when the stop request occurs. This work proposes a methodology to identify the relationship of the parameters of an optimization algorithm by colony of ants with its behavior at-all-moment, allowing to implement a techniq...

2006
JONATHAN A. HILLMAN

We introduce the notions of “k-connected-slice” and “π1-slice”, interpolating between “homotopy ribbon” and “slice”. We show that every high-dimensional knot group π is the group of an (n− 1)-connected-slice n-knot for all n ≥ 3. However if π is the group of an n-connected-slice n-knot the augmentation ideal I(π) must have deficiency 1 as a module. If moreover n = 2 and π is finitely generated ...

Journal: :iranian journal of radiology 0
hamid behroozi department of radiologic technology, faculty of paramedicine, jundishapur university of medical sciences, ahvaz, iran; department of radiologic technology, faculty of paramedicine, jundishapur university of medical sciences, p.o. box: 61357-15794, golestan, ahvaz, iran. tel: + 98-6113738317e, fax: + 98-6113738330 mohammad davoodi department of radiologic technology, faculty of paramedicine, jundishapur university of medical sciences, ahvaz, iran shahriar aghasi department of radiologic technology, faculty of paramedicine, jundishapur university of medical sciences, ahvaz, iran

background the present data show a global increase in the rate of cardiovascular disease. cardiac ct angiography has developed as a fast and non-invasive cardiac imaging modality following the introduction of multi-slice computed tomogaraphy. conclusions the total mean radiation dose to the thyroid and gonads was 0.36 msv, and 96.5 μsv, respectively for the subjects. these values were high for ...

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