Results 211 to 220 of about 1,766,452 (265)

Dose rate correction in medium dose rate brachytherapy for carcinoma cervix

Radiotherapy and Oncology, 1998
To establish the magnitude of brachytherapy dose reduction required for stage IIB and III carcinoma cervix patients treated by external radiation and medium dose rate (MDR) brachytherapy at a dose rate of 220+/-10 cGy/h at point A.In study-I, at the time of MDR brachytherapy application at a dose rate of 220+/-10 cGy/h at point A, patients received ...
F D, Patel, P S, Negi, S C, Sharma, R, Kapoor, D P, Singh, S, Ghoshal   +5 more
openaire   +2 more sources

Acoustic Dose and Acoustic Dose-Rate

Ultrasound in Medicine & Biology, 2009
Acoustic dose is defined as the energy deposited by absorption of an acoustic wave per unit mass of the medium supporting the wave. Expressions for acoustic dose and acoustic dose-rate are given for plane-wave conditions, including temporal and frequency dependencies of energy deposition.
openaire   +2 more sources

The influence of dose rate on the dose-effect relationship

Journal of Radiological Protection, 1990
The sparing effect of reduced dose rate on the severity of the cellular radiobiological effect is interpreted in terms of a linear-quadratic dose-effect relationship which ascribes the sparing effect to the reduction in the quadratic coefficient as the dose rate is reduced.
Leenhouts, HP, Chadwick, KH
openaire   +2 more sources

Dose and dose rate effectiveness of space radiation

Radiation Protection Dosimetry, 2006
Dose and dose rate effectiveness factors (DDREF), in conjunction with other weighting factors, are commonly used to scale atomic bomb survivor data in order to establish limits for occupational radiation exposure, including radiation exposure in space. We use some well-known facts about the microscopic pattern of energy deposition of high-energy heavy ...
W, Schimmerling, F A, Cucinotta
openaire   +2 more sources

THE DOSE AND DOSE-RATE EFFECTIVENESS FACTOR (DDREF)

Health Physics, 2019
Dear Editors:WE READ with interest the paper by Kocher et al. (2018) intended to “develop a probability distribution of a DDREF [dose and dose-rate effectiveness factor] for solid cancers induced by low-LET radiation that is an unbiased representation of the state of knowledge.”The DDREF is a ...
Wakeford, Richard, Azizova, T. V., Dörr, W., Garnier-Laplace, J, Hauptmann, Michael, Ozasa, K, Rajaraman, P, Sakai, K, Salomaa, Sisko, Sokolnikov, Mikhail, Stram, Daniel, Sun, Quanfu, Wojcik, A, Woloschak, Gayle, Bouffler, S. D., Grosche, B, Kai, M, Little, Mark, Shore, Roy, Walsh, Linda, Ruhm, Werner   +20 more
openaire   +3 more sources

Low dose and low dose rate radioluminescence dosimetry

Applied Radiation and Isotopes, 2023
Review is provided of a number of low-dose, low dose rate situations that in study require advances in the development of dosimetric facilities. Using a clinical linac set up to provide doses down to the few mGy level, the performance of a real-time radioluminescence system has then been illustrated, accommodating pulsed as well as continuous dose ...
D.A. Bradley, R.Z. Essa, Suat-Cheng Peh, Sin-Yeang Teow, Ming-Tsuey Chew, H.T. Zubair, Adebiyi Oresegun, Azmi Basaif, Kan Yeep Choo, Siti A. Ibrahim, Hairul Azhar Abdul-Rashid   +10 more
openaire   +4 more sources

Postoperative management of keloids: Low-dose-rate and high-dose-rate brachytherapy

Brachytherapy, 2014
We report the experience of the Radiation Oncology Department of the European Institute of Oncology in Milan, Italy, on the adjuvant low-dose-rate (LDR) and high-dose-rate (HDR) interstitial brachytherapy. Brachytherapy might be useful to improve keloids recurrence rate or reduce keloids treatment side effects instead of external beam radiotherapy.Data
L. De Cicco, B. Vischioni, A. Vavassori, F. Gherardi, B.A. Jereczek, R. Lazzari, F. Cattani, S. Comi, F. De Lorenzi, S. Martella, R. Orecchia   +10 more
openaire   +2 more sources

The variation of oer with dose rate

International Journal of Radiation Oncology*Biology*Physics, 1985
The oxygen enhancement ratio (OER) has been measured as a function of dose rate from 276 Gy/hr to 0.89 Gy/hr for V-79 cells irradiated at 23 degrees C or 37 degrees C. As dose rate is decreased, the OER initially increases, from a value of 3.0, to a maximum value of 3.7 to 4.0, at a dose rate between 20 and 60 Gy/hr. The OER subsequently decreases with
C C, Ling, I J, Spiro, J, Mitchell, R, Stickler   +3 more
openaire   +2 more sources

Correlation Between High Dose Rate Irradiation and Low Dose Rate Irradiation for Switched Dose Rate Technique

IEEE Transactions on Nuclear Science, 2019
Based on gated lateral p-n-p (GLp-n-p) transistors, the correlation between the high dose rate (HDR) and low dose rate (LDR) irradiations during the switched dose rate experiments is investigated. Experimental results show that a significant deviation of the current gain degradation caused by switching dose rate irradiations from that by individual LDR
Xingji Li, Jianqun Yang, Hongbing Chen, Shanliang Dong, Gang Lv   +4 more
openaire   +1 more source

High Dose-Rate Versus Low Dose-Rate Brachytherapy for Lip Cancer

International Journal of Radiation Oncology*Biology*Physics, 2012
To analyze the outcome after low-dose-rate (LDR) or high-dose-rate (HDR) brachytherapy for lip cancer.One hundred and three patients with newly diagnosed squamous cell carcinoma of the lip were treated between March 1985 and June 2009 either by HDR (n = 33) or LDR brachytherapy (n = 70).
Ghadjar, Pirus, Bojaxhiu, Beat, Simcock, Mathew, Terribilini, Dario, Isaak, Bernhard, Gut, Philipp, Wolfensberger, Patrick Rudolf, Brömme, Jens, Geretschläger, Andreas, Behrensmeier, Frank, Pica, Alessia, Aebersold, Daniel Matthias   +11 more
openaire   +4 more sources