16 research outputs found

    Parameters of TOAE structures provided by standard Gabor dictionary.

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    <p>Parameters of TOAE structures provided by standard Gabor dictionary.</p

    Parameters of SSVEP structures provided by both dictionaries in O2 channel.

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    <p>(E-enriched dictionary, G-Gabor dictionary)</p><p>Parameters of SSVEP structures provided by both dictionaries in O2 channel.</p

    Time-frequency distributions obtained by: A—windowed Fourier transform (spectrogram), B—Rihaczek transform, C—Morlet wavelets, D—Wigner de Ville transform, E—MP with the enriched dictionary, F—MP with the Gabor dictionary.

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    <p>Components of simulated signal consisting of asymmetric waveform of frequency 15 Hz and two spindles of frequencies 12 Hz and 10 Hz are shown at the very top of the picture. On the horizontal axis time, on the vertical axis frequency in Hz. The colors represent: for four upper panels energy and for two lowest panels amplitude (red the strongest, dark blue the weakest).</p

    Parameters of SSVEP structures provided by both dictionaries in P4 channel.

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    <p>(E-enriched dictionary, G-Gabor dictionary)</p><p>Parameters of SSVEP structures provided by both dictionaries in P4 channel.</p

    Examples of functions with different asymmetry used in the enriched dictionary.

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    <p>Examples of functions with different asymmetry used in the enriched dictionary.</p

    Initial Experience with Fenestrated Physician-Modified Stent Grafts Using 3D Aortic Templates

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    The goal of this study was to describe the surgical results of physician-modified endografts (PMEG) utilizing a 3D aortic template in a center with no prior experience in complex endovascular aortic repairs. Forty-three patients underwent physician-modified graft stent implantation using a 3D aortic model. The inclusion criteria were juxtarenal and suprarenal aortic aneurysms, type IV thoracoabdominal aneurysms, and type IA endoleak after endovascular aortic repair. In asymptomatic patients, the diameter threshold for aneurysm repair was 5.5 cm in males and 5.0 cm in females. 3D aortic templates were prepared from the patient’s computed tomography angiography scans and sterilized before use in the operating suite. Forty-three stent grafts were modified with the use of a 3D printing template. A total of 162 reinforced fenestrations (37 celiac, 43 right renal, 39 left renal, 43 superior mesenteric) with a mean of 3.8 per patient were performed. All PMEGs had a posterior reducing-diameter tie and a preloaded guidewire. The mean modification time was 86 ± 12 min. The mean follow-up was 14 ± 12 months. The 30-day mortality was 12%. During the follow-up period, the patency rate was 95% per the superior mesenteric artery, 93% per right renal artery, 95% per left renal artery, and 89% per celiac trunk. Twelve (28%) patients had endoleak, of which type I or III was present in 5 (12%) patients, and type II in 7 (16%). 3D printing can be successfully integrated into the physician’s everyday practice of stent graft modification. However, the use of this approach in centers without experience performing complex aortic procedures results in worse surgical metrics than those previously reported

    Parameters of TOAE structures provided by enriched dictionary.

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    <p>Parameters of TOAE structures provided by enriched dictionary.</p
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