Search Results - "Fontenla, D P"

Improved dose homogeneity in scalp irradiation using a single set-up point and different energy electron beams by YAPARPALVI, R, FONTENLA, D. P, BEITLER, J. J

“…Homogeneous irradiation of the entire or a large portion of the superficial scalp poses both technical and dosimetric challenges. Some techniques will…”
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The relationship between dose heterogeneity ("hot" spots) and complications following high-dose rate brachytherapy by Vikram, B, Deore, S, Beitler, J J, Sood, B, Mullokandov, E, Kapulsky, A, Fontenla, D P

“…It is generally believed that "hot" spots should be avoided in radiotherapy because they lead to complications. Dose homogeneity within the target volume is…”
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Total body irradiation with an arc and a gravity-oriented compensator by Chui, C S, Fontenla, D P, Mullokandov, E, Kapulsky, A, Lo, Y C, Lo, C J

“…To deliver uniform dose distributions for total-body irradiation (TBI) with an arc field and a gravity-oriented compensator. This technique allows the patient…”
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Parotid gland tumors: a comparison of postoperative radiotherapy techniques using three dimensional (3D) dose distributions and dose-volume histograms (DVHS) by Yaparpalvi, R, Fontenla, D P, Tyerech, S K, Boselli, L R, Beitler, J J

“…To compare different treatment techniques for unilateral treatment of parotid gland tumors. The CT-scans of a representative parotid patient were used. The…”
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Radiation therapy of breast carcinoma: confirmation of prescription dose using diodes by Yaparpalvi, R, Fontenla, D P, Yu, L, Lai, P P, Vikram, B

“…To quantitate the dose delivered during tangential breast radiation therapy and measure the scatter dose to the contralateral breast for three different breast…”
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Customization of a radiation management system to support in vivo patient dosimetry using diodes by Fontenla, D P, Curran, J, Yaparpalvi, R, Vikram, B

“…Considerable effort is generally made in the quality control of radiation therapy units and in patient chart checking to ensure accurate delivery of treatment…”
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Uncertainty of calibrations at the accredited dosimetry calibration laboratories by Ibbott, G. S., Attix, F. H., Slowey, T. W., Fontenla, D. P., Rozenfeld, M.

“…The American Association of Physicists in Medicine, through a subcommittee (formerly Task Group 3) of the Radiation Therapy Committee, has accredited five…”
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Beam characteristics of a new model of 6-MV linear accelerator by Fontenla, D P, Napoli, J J, Chui, C S

“…This paper describes the beam characteristics and dosimetry measurements performed on the 6-MV photon beam of a new model of linear accelerator, three of which…”
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Effect of ocular implants of different materials on the dosimetry of external beam radiation therapy by Fontenla, D P, Ahmad, M, Chui, C S, McCormick, B, Abramson, D H, Kutcher, G J

“…To study the attenuation and scattering effects of ocular implants, made from different materials, on the dose distributions of a 6 MV photon beam, and 6, 9,…”
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Simulating blocks in treatment planning calculations by Fontenla, D P, Kutcher, G J, LoSasso, T J

“…It is difficult to make an accurate calculation of dose distribution incorporating blocks using a ray model. One approach is to simulate the blocking in a…”
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Close or positive margins after surgical resection for the head and neck cancer patient: the addition of brachytherapy improves local control by Beitler, J J, Smith, R V, Silver, C E, Quish, A, Deore, S M, Mullokandov, E, Fontenla, D P, Wadler, S, Hayes, M K, Vikram, B

“…Microscopically positive or close margins after surgical resection results in an approximately 21-26% local failure rate despite excellent postoperative…”
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Clinical experience with routine diode dosimetry for electron beam radiotherapy by Yaparpalvi, R, Fontenla, D P, Vikram, B

“…Electron beam radiotherapy is frequently administered based on clinical setups without formal treatment planning. We felt, therefore, that it was important to…”
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Effects of beam modifiers and immobilization devices on the dose in the build-up region by Fontenla, D P, Napoli, J J, Hunt, M, Fass, D, McCormick, B, Kutcher, G J

“…To analyze the effect that immobilization devices used in conjunction with beam modifiers may have on the dose to the skin and build-up region. Central axis…”
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Methods of bolusing the tracheostomy stoma by Beitler, J J, Yaparpalvi, R, Della Biancia, C, Fontenla, D P

“…The tracheostomy stoma is a potential site of recurrence for patients who have subglottic cancer or subglottic spread of cancer. In these patients, it is…”
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Comparison of the transit dose components and source kinematics of three high dose rate afterloading systems by Wojcicka, J B, Yankelevich, R, Trichter, F, Fontenla, D P

“…High dose rate (HDR) afterloading systems are using a high activity Ir-192 source that stops at programmed dwell positions to deliver a prescribed dose. The…”
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Dosimetric and dose-fractionation concerns in vaginal cuff irradiation using high dose rate brachytherapy: regarding Noyes et al. IJROBP 32(5):1439-1443; 1995 by Deore, S M, Fontenla, D P, Ahmad, M, Mullokandov, E, Sood, B M, Vikram, B

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Recommendations on performance characteristics of diagnostic exposure meters: report of AAPM Diagnostic X-Ray Imaging Task Group No. 6 by Wagner, L K, Fontenla, D P, Kimme-Smith, C, Rothenberg, L N, Shepard, J, Boone, J M

“…Task Group 6 of the Diagnostic X-Ray Imaging Committee of the American Association of Physicists in Medicine (AAPM) was appointed to develop performance…”
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Diode dosimetry of models 6711 and 6712 125I seeds in a water phantom by Ahmad, M, Fontenla, D P, Chiu-Tsao, S T, Chui, C S, Reiff, J E, Anderson, L L, Huang, D Y, Schell, M C

“…Two-dimensional relative dose distributions have been measured around 125I brachytherapy seeds. The two seed models studied, models 6711 and 6712, were…”
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Diode dosimetry of 103Pd model 200 seed in water phantom by Fontenla, D P, Ahmad, M, Chiu-Tsao, S T, Anderson, L L

“…The relative dose distribution around the 103Pd model 200 implant seed was measured with a computerized data acquisition system employing a p-n junction…”
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Five dosimetric considerations in perineal templates: regarding Kavanagh et al., IJROBP 30:508; 1994 by Deore, S M, Ahmad, M, Yaparpalvi, R, Fontenla, D P, Sood, B M, Vikram, B

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