Zobrazeno 1 - 10
of 101
pro vyhledávání: '"Nieminen, P J"'
Autor:
Bunni, Saif, Nieminen, Heikki J.
It has been recently demonstrated that use of ultrasound increases the tissue yield in ultrasound-enhanced fine-needle aspiration biopsy (USeFNAB) as compared to conventional fine-needle aspiration biopsy (FNAB). To date, the association between beve
Externí odkaz:
http://arxiv.org/abs/2205.09605
Annually, more than 16 billion medical needles are consumed worldwide. However, the functions of the medical needle are still limited to cutting and delivering or drawing material through the needle to a target site. Ultrasound combined with hypoderm
Externí odkaz:
http://arxiv.org/abs/2203.14792
Ultrasonic cavitation is being used in medical applications as a way to influence matter, such as tissue or drug vehicles, on a micro-scale. Oscillating or collapsing cavitation bubbles provide transient mechanical force fields, which can, e.g., frac
Externí odkaz:
http://arxiv.org/abs/2107.03103
Non-invasive therapeutic ultrasound methods, such as high-intensity focused ultrasound (HIFU), have limited access to tissue targets shadowed by bones or presence of gas. This study demonstrates that an ultrasonically actuated medical needle can be u
Externí odkaz:
http://arxiv.org/abs/2107.02601
Autor:
Perra, Emanuele, Lampsijärvi, Eetu, Barreto, Gonçalo, Arif, Muhammad, Puranen, Tuomas, Hæggström, Edward, Pritzker, Kenneth P. H., Nieminen, Heikki J.
Despite the ubiquitous use over the past 150 years, the functions of the current medical needle are facilitated only by mechanical shear and cutting by the needle tip,i.e.the lancet. In this study, we demonstrate how nonlinear ultrasonics (NLU) exten
Externí odkaz:
http://arxiv.org/abs/2006.16604
Three-dimensional (3D) semi-quantitative grading of pathological features in articular cartilage (AC) offers significant improvements in basic research of osteoarthritis (OA). We have earlier developed the 3D protocol for imaging of AC and its struct
Externí odkaz:
http://arxiv.org/abs/1907.05089
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We show that every non-compact weighted composition operator $f \mapsto u\cdot (f\circ\phi)$ acting on a Hardy space $H^p$ for $1 \leq p < \infty$ fixes an isomorphic copy of the sequence space $\ell^p$ and therefore fails to be strictly singular. We
Externí odkaz:
http://arxiv.org/abs/1809.05118
We show that the non-compact generalised analytic Volterra operators $T_g$, where $g \in \mathit{BMOA}$, have the following structural rigidity property on the Hardy spaces $H^p$ for $1 \le p < \infty$ and $p \neq 2$: if $T_g$ is bounded below on an
Externí odkaz:
http://arxiv.org/abs/1710.01252
Akademický článek
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