MO-EE-A1-01: A Necessary and Efficient Cerenkov Subtraction Technique for in Vivo Scintillation Dosimetry for HDR Brachytherapy

2010 ◽  
Vol 37 (6Part25) ◽  
pp. 3346-3346
Author(s):  
F Therriault-Proulx ◽  
S Beddar ◽  
TM Briere ◽  
L Beaulieu
Keyword(s):  
Hdr Brachytherapy ◽  
Subtraction Technique

Depolarizing-electrode monophasic curves and myocardial infarction ST shift

1962 ◽  
Vol 202 (1) ◽  
pp. 35-40 ◽  
Author(s):  
Gordon E. Dower ◽  
William G. Ziegler ◽  
Margaret A. Geddes ◽  
John A. Osborne
Keyword(s):  
Myocardial Infarction ◽  
Reference Electrode ◽  
Membrane Resistance ◽  
Potassium Ion ◽  
Subtraction Technique ◽  
Cell Interior ◽  
Satisfactory Explanation ◽  
Low Amplitude

The in vivo monophasic curves of the potential variations between an intracellular microelectrode and a remote reference electrode show irregular upstrokes. These can be removed by subtracting from them the ECG recorded from a wire loop surrounding the microelectrode. Since similar irregularities are present in the upstrokes of monophasic curves obtained from potassium-ion depolarizing electrodes, the effect of a similar subtraction technique was tried. Again, sigmoid upstrokes were obtained. The role of the potassium ion is to render the membrane inexcitable at the electrode. The result is that the electrode follows the potential changes of the cell interior with a lag determined by a time constant due to the membrane resistance and the capacitance of the electrode to the rest of the animal. Since the ST changes in myocardial infarction can be considered low amplitude monophasic patterns superimposed on the ECG, and it has been found that the release of potassium from damaged muscle can produce monophasic patterns, it now seems possible to present a satisfactory explanation of such changes.

Digital Subtraction Radiography for Longitudinal Assessment of Peri-Implant Bone Change: Method and Validation

1993 ◽  
Vol 7 (2) ◽  
pp. 196-201 ◽  
Author(s):  
M.K. Jeffcoat ◽  
M.S. Reddy
Keyword(s):  
Digital Subtraction ◽  
Longitudinal Assessment ◽  
Bone Change ◽  
Excellent Correlation ◽  
Subtraction Technique ◽  
Digital Subtraction Radiography ◽  
Healing Phase ◽  
Comparison Of The Results ◽  
Subtraction Image

The purpose of this paper is to present a digital subtraction technique for the assessment of peri-implant bone change over time in vivo. Digital subtraction radiography may be used to detect areas of bony change that have occurred between radiographic examinations, and image processing algorithms have been developed which can relate the magnitude of the change on the subtraction image to a reference wedge, thereby allowing calculation of the mass of the lesion. This manuscript will present two algorithms for the assessment of osseous change. The method was validated in monkeys by means of small bony chips placed intra-orally prior to the first radiograph. The chips were removed, a second radiograph taken, and the images subtracted. Each algorithm was used to isolate the lesion and calculate change in bone mass. Overall, there was excellent correlation between the calculated lesion mass (in milligrams) and actual lesion mass (r2 > 0.9). The utility of the method was demonstrated by comparison of the results of subtraction radiography in successful implants and in implants that did not integrate during the healing phase.

In Vivo Rectal Wall Dosimetry in Gynecological HDR Brachytherapy Using a Semi-Flexible Rectal Probe Provided with MOSkin Dosimeters

Brachytherapy ◽  
2016 ◽  
Vol 15 ◽  
pp. S30
Author(s):  
Chiara Tenconi ◽  
Mauro Carrara ◽  
Davide Mazzeo ◽  
Anna Romanyukha ◽  
Annamaria Cerrotta ◽  
...  
Keyword(s):  
Rectal Wall ◽  
Hdr Brachytherapy

Clinical application of MOSkin dosimeters to rectal wall in vivo dosimetry in gynecological HDR brachytherapy

2017 ◽  
Vol 41 ◽  
pp. 5-12 ◽  
Author(s):  
M. Carrara ◽  
A. Romanyukha ◽  
C. Tenconi ◽  
D. Mazzeo ◽  
A. Cerrotta ◽  
...  
Keyword(s):  
Clinical Application ◽  
Rectal Wall ◽  
In Vivo Dosimetry ◽  
Hdr Brachytherapy

scholarly journals Assessing patient characteristics and radiation-induced non-targeted effects in vivo for high dose-rate (HDR) brachytherapy

2015 ◽  
Vol 91 (10) ◽  
pp. 786-794 ◽  
Author(s):  
Christine Pinho ◽  
Emilia Timotin ◽  
Raimond Wong ◽  
Ranjan K. Sur ◽  
Joseph E. Hayward ◽  
...  
Keyword(s):  
Dose Rate ◽  
Patient Characteristics ◽  
High Dose Rate ◽  
High Dose ◽  
Hdr Brachytherapy ◽  
Radiation Induced

Characterization of commercial MOSFET detectors and their feasibility for in-vivo HDR brachytherapy

2016 ◽  
Vol 32 (1) ◽  
pp. 208-212 ◽  
Author(s):  
Reena Phurailatpam ◽  
Rituraj Upreti ◽  
Siji Nojin Paul ◽  
Swamidas V. Jamema ◽  
Deepak D. Deshpande
Keyword(s):  
Hdr Brachytherapy

In vivo dosimetry using MOSkin detector during Cobalt-60 high-dose-rate (HDR) brachytherapy of skin cancer

2019 ◽  
Vol 42 (4) ◽  
pp. 1099-1107 ◽  
Author(s):  
Z. Jamalludin ◽  
W. L. Jong ◽  
G. F. Ho ◽  
A. B. Rosenfeld ◽  
N. M. Ung
Keyword(s):  
Skin Cancer ◽  
Dose Rate ◽  
High Dose Rate ◽  
In Vivo Dosimetry ◽  
High Dose ◽  
Hdr Brachytherapy
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