Zobrazeno 1 - 10
of 448
pro vyhledávání: '"Resonance frequency shift"'
Multi-echo gradient echo pulse sequences: which is best for PRFS MR thermometry guided hyperthermia?
Autor:
Theresa V. Feddersen, Dirk H. J. Poot, Margarethus M. Paulides, Ghassan Salim, Gerard C. van Rhoon, Juan A. Hernandez-Tamames
Publikováno v:
International Journal of Hyperthermia, Vol 40, Iss 1 (2023)
AbstractPurpose MR thermometry (MRT) enables noninvasive temperature monitoring during hyperthermia treatments. MRT is already clinically applied for hyperthermia treatments in the abdomen and extremities, and devices for the head are under developme
Externí odkaz:
https://doaj.org/article/800d31527a7144ad9d80d0f7c4b3fa61
Publikováno v:
Frontiers in Energy Research, Vol 11 (2023)
To achieve high-precision and high-stability detection of wind speed and direction in complex environments, this research proposes a dual closed-loop control scanning technique for the wind sensor system based on the acoustic resonance principle. Thi
Externí odkaz:
https://doaj.org/article/7212226fc6f34dc8b8acbb6d1558a007
Akademický článek
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Publikováno v:
Bioengineering, Vol 10, Iss 11, p 1299 (2023)
Proton resonance frequency shift (PRFS) is an MRI-based simple temperature mapping method that exhibits higher spatial and temporal resolution than temperature mapping methods based on T1 relaxation time and diffusion. PRFS temperature measurements a
Externí odkaz:
https://doaj.org/article/44b3fbd137d94cd2a623bd5c30c8b8b0
Autor:
Ji-Seob Choi, Woo-Tae Park
Publikováno v:
Micro and Nano Systems Letters, Vol 8, Iss 1, Pp 1-6 (2020)
Abstract Recently, as the concentration of fine dust in the atmosphere has increased due to an increase in the use of fossil fuel power plants, automobiles, and factories, it has been increasingly important to measure fine dust in the atmosphere. Thi
Externí odkaz:
https://doaj.org/article/c24749298d0b48c69b026d3b0571129c
Publikováno v:
Chinese Journal of Magnetic Resonance, Vol 36, Iss 3, Pp 253-260 (2019)
High-intensity focused ultrasound (HIFU) is a noninvasive thermal ablation therapy. Thermometry techniques with high precision and temporal resolution are needed to ensure the safety and effectiveness of HIFU. The magnetic resonance thermometry (MRT)
Externí odkaz:
https://doaj.org/article/753f133286054a4d807afce9588e7f9c
Autor:
Keonil Kim, Jisoo Ahn, Kwangyong Yoon, Minjung Ko, Jiyoung Ahn, Hyesung Kim, Jihyeon Park, Chulhyun Lee, Dongwoo Chang, Sukhoon Oh
Publikováno v:
Sensors, Vol 22, Iss 11, p 4034 (2022)
The core body temperature tends to decrease under general anesthesia. Consequently, monitoring the core body temperature during procedures involving general anesthesia is essential to ensure patient safety. In veterinary medicine, rectal temperature
Externí odkaz:
https://doaj.org/article/523dde1eff6e45a6a506101a0caebae1
Akademický článek
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Autor:
Valéry Ozenne, Charlotte Constans, Pierre Bour, Mathieu D. Santin, Romain Valabrègue, Harry Ahnine, Pierre Pouget, Stephane Lehéricy, Jean-François Aubry, Bruno Quesson
Publikováno v:
NeuroImage, Vol 204, Iss , Pp 116236- (2020)
Background: Transcranial focus ultrasound applications applied under MRI-guidance benefit from unrivaled monitoring capabilities, allowing the recording of real-time anatomical information and biomarkers like the temperature rise and/or displacement
Externí odkaz:
https://doaj.org/article/ffffc0c5b77944f3b5b0d4dc431bf703
Publikováno v:
Sensors, Vol 22, Iss 4, p 1691 (2022)
The composition of gas mixtures may be determined via changes of the speed of sound. As this affects the resonance frequency of the gas inside a tube, indirect measurements through a frequency analysis are also possible. It is demonstrated that this
Externí odkaz:
https://doaj.org/article/76334b4414504806ae1e3c4413891970