Design and Medical Applications of a Platform for Image-Guided Non-Invasive Brain Delivery of Magnetic Particles.

2018 ◽  
Author(s):  
J. Benlloch ◽  
I. Weinberg
Keyword(s):  
Magnetic Particles ◽  
Medical Applications ◽  
Brain Delivery ◽  
Non Invasive ◽  
Image Guided

Platform for Image-Guided Noninvasive Brain Delivery of Magnetic Particles: Concept and Technical Progress

2018 ◽  
Vol 9 ◽  
pp. 1-5 ◽  
Author(s):  
Irving N. Weinberg ◽  
Lamar O. Mair ◽  
Sahar Jafari ◽  
Sagar Chowdhury ◽  
James Baker-McKay ◽  
...  
Keyword(s):  
Technical Progress ◽  
Magnetic Particles ◽  
Brain Delivery ◽  
Image Guided

scholarly journals Methodology: non-invasive monitoring system based on standing wave ratio for detecting water content variations in plants

Plant Methods ◽  
2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Yunjeong Yang ◽  
Ji Eun Kim ◽  
Hak Jin Song ◽  
Eun Bin Lee ◽  
Yong-Keun Choi ◽  
...  
Keyword(s):  
Water Content ◽  
Monitoring System ◽  
Standing Wave ◽  
Magnetic Particles ◽  
Experimental Plant ◽  
Invasive Monitoring ◽  
Monitoring Method ◽  
Non Invasive ◽  
Content Variation ◽  
Stem Water

Abstract Background Water content variation during plant growth is one of the most important monitoring parameters in plant studies. Conventional parameters (such as dry weight) are unreliable; thus, the development of rapid, accurate methods that will allow the monitoring of water content variation in live plants is necessary. In this study, we aimed to develop a non-invasive, radiofrequency-based monitoring system to rapidly and accurately detect water content variation in live plants. The changes in standing wave ratio (SWR) caused by the presence of stem water and magnetic particles in the stem water flow were used as the basis of plant monitoring systems. Results The SWR of a coil probe was used to develop a non-invasive monitoring system to detect water content variation in live plants. When water was added to the live experimental plants with or without illumination under drought conditions, noticeable SWR changes at various frequencies were observed. When a fixed frequency (1.611 GHz) was applied to a single experimental plant (Radermachera sinica), a more comprehensive monitoring, such as water content variation within the plant and the effect of illumination on water content, was achieved. Conclusions Our study demonstrated that the SWR of a coil probe could be used as a real-time, non-invasive, non-destructive parameter for detecting water content variation and practical vital activity in live plants. Our non-invasive monitoring method based on SWR may also be applied to various plant studies.

Image-Guided Positioning in Intracranial Non-Invasive Stereotactic Radiosurgery for the Treatment of Brain Metastasis

2012 ◽  
Vol 98 (5) ◽  
pp. 630-635 ◽  
Author(s):  
Ferrat Dincoglan ◽  
Murat Beyzadeoglu ◽  
Omer Sager ◽  
Kaan Oysul ◽  
Sait Sirin ◽  
...  
Keyword(s):  
Brain Metastasis ◽  
Stereotactic Radiosurgery ◽  
Non Invasive ◽  
Image Guided

Accelerated Partial Breast Irradiation Using Non-Invasive Image-Guided Breast Brachytherapy: Feasibility and Early Experience

Brachytherapy ◽  
2013 ◽  
Vol 12 ◽  
pp. S16 ◽  
Author(s):  
Jaroslaw T. Hepel ◽  
Jessica R. Hiatt ◽  
Sandra Sha ◽  
Kara L. Leonard ◽  
Theresa A. Graves ◽  
...  
Keyword(s):  
Early Experience ◽  
Accelerated Partial Breast Irradiation ◽  
Partial Breast Irradiation ◽  
Breast Irradiation ◽  
Non Invasive ◽  
Image Guided ◽  
Breast Brachytherapy

SU-FF-J-32: A Feasibility Study of Image-Guided Non-Invasive Single-Fraction Stereotactic Radiosurgery Using the 2D2D Match of An On-Board Imaging System

2007 ◽  
Vol 34 (6Part5) ◽  
pp. 2375-2375
Author(s):  
J Chang ◽  
W O'Meara ◽  
J Mechalakos ◽  
Y Yamada ◽  
D Lovelock ◽  
...  
Keyword(s):  
Stereotactic Radiosurgery ◽  
Feasibility Study ◽  
Imaging System ◽  
Single Fraction ◽  
Non Invasive ◽  
Image Guided

SU-FF-T-75: Accuracy Assessment of a Non-Invasive Image Guided System for Intra-Cranial Linac Based Stereotactic Radiosurgery

2006 ◽  
Vol 33 (6Part7) ◽  
pp. 2066-2066 ◽  
Author(s):  
F Hacker ◽  
F Rosca ◽  
S Friesen ◽  
P Zygmanski ◽  
N Ramakrishna
Keyword(s):  
Stereotactic Radiosurgery ◽  
Accuracy Assessment ◽  
Non Invasive ◽  
Image Guided

scholarly journals Intrafractional 6D head movement increases with time of mask fixation during stereotactic intracranial RT-sessions

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Julian Mangesius ◽  
Thomas Seppi ◽  
Rocco Weigel ◽  
Christoph Reinhold Arnold ◽  
Danijela Vasiljevic ◽  
...  
Keyword(s):  
Treatment Duration ◽  
Treatment Time ◽  
Treatment Session ◽  
Head Movements ◽  
Random Errors ◽  
Non Invasive ◽  
Image Guided ◽  
Thermoplastic Mask ◽  
Head Positions ◽  
Entire Treatment

Abstract Background The present study investigates the intrafractional accuracy of a frameless thermoplastic mask used for head immobilization during stereotactic radiotherapy. Non-invasive masks cannot completely prohibit head movements. Previous studies attempted to estimate the magnitude of intrafractional inaccuracy by means of pre- and postfractional measurements only. However, this might not be sufficient to accurately map also intrafractional head movements. Materials and methods Intrafractional deviation of mask-fixed head positions was measured in five patients during a total of 94 fractions by means of close-meshed repeated ExacTrac measurements (every 1.4 min) conducted during the entire treatment session. A median of six (range: 4 to 11) measurements were recorded per fraction, delivering a dataset of 453 measurements. Results Random errors (SD) for the x, y and z axes were 0.27 mm, 0.29 mm and 0.29 mm, respectively. Median 3D deviation was 0.29 mm. Of all 3D intrafractional motions, 5.5 and 0.4% exceeded 1 mm and 2 mm, respectively. A moderate correlation between treatment duration and mean 3D displacement was determined (rs = 0.45). Mean 3D deviation increased from 0.21 mm (SD = 0.26 mm) in the first 2 min to a maximum of 0.53 mm (SD = 0.31 mm) after 10 min of treatment time. Conclusion Pre- and post-treatment measurement is not sufficient to adequately determine the range of intrafractional head motion. Thermoplastic masks provide both reliable interfractional and intrafractional immobilization for image-guided stereotactic hypofractionated radiotherapy. Greater positioning accuracy may be obtained by reducing treatment duration (< 6 min) and applying intrafractional correction. Trial registration Clinicaltrials.gov, NCT03896555, Registered 01 April 2019 - retrospectively registered.

Magnetic particles and sensing methods for medical applications

2010 ◽  
Vol 148 (1) ◽  
pp. e68-e70
Author(s):  
M. Visscher ◽  
M. Sobik ◽  
B. ten Haken ◽  
H. Rogalla
Keyword(s):  
Magnetic Particles ◽  
Medical Applications
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