Search Results - "Zwicker, R D"

Hypofractionated stereotactic radiotherapy as an alternative to radiosurgery for the treatment of patients with brain metastases by Manning, M A, Cardinale, R M, Benedict, S H, Kavanagh, B D, Zwicker, R D, Amir, C, Broaddus, W C

“…Modeling studies have demonstrated a potential biologic advantage of fractionated stereotactic radiotherapy for malignant brain tumors as compared to…”
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A comparison of three stereotactic radiotherapy techniques; ARCS vs. noncoplanar fixed fields vs. intensity modulation by Cardinale, R M, Benedict, S H, Wu, Q, Zwicker, R D, Gaballa, H E, Mohan, R

“…Linac arc based stereotactic radiotherapy is being used with increasing frequency to treat brain tumors. This approach can be used for single or fractionated…”
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Internal mammary node coverage: an investigation of presently accepted techniques by Arthur, D W, Arnfield, M R, Warwicke, L A, Morris, M M, Zwicker, R D

“…Recent publications have generated a renewed interest in regional nodal treatment to include the ipsilateral supraclavicular and internal mammary nodes (IMN)…”
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Dose uniformity in a planar interstitial implant system by Zwicker, R D, Schmidt-Ullrich, R

“…This work makes use of a volume-ratio technique to examine dose uniformity in a planar interstitial implant system based entirely on geometrical constraints…”
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Comments on dose measurements for a narrow beam in radiosurgery by Wu, A, Zwicker, R D, Kalend, A M, Zheng, Z

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The biological effectiveness of intermittent irradiation as a function of overall treatment time: development of correction factors for linac-based stereotactic radiotherapy by Benedict, S H, Lin, P S, Zwicker, R D, Huang, D T, Schmidt-Ullrich, R K

“…Continuous irradiation of relatively short duration as administered in gamma-ray stereotactic radiosurgery (SRS) is biologically not equivalent to the more…”
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Optimization of planar high-dose-rate implants by Zwicker, R D, Arthur, D W, Kavanagh, B D, Mohan, R, Schmidt-Ullrich, R K

“…Brachytherapy has long been used to deliver localized radiation to the breast and other cancer sites. For interstitial implants, proper source positioning is…”
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Cosmetic outcome in patients receiving an interstitial implant as part of breast-conservation therapy by Kramer, B A, Arthur, D W, Ulin, K, Schmidt-Ullrich, R K, Zwicker, R D, Wazer, D E

“…To study factors related to breast cosmetic outcome in patients treated with an interstitial implant as part of breast-conservation therapy. One hundred…”
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Comparison of dose homogeneity effects due to electron equilibrium loss in lung for 6 MV and 18 MV photons by White, P J, Zwicker, R D, Huang, D T

“…Loss of electronic equilibrium within and adjacent to low density materials can result in a dose reduction along the central axis and near the beam edge for…”
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Transverse tomosynthesis on a digital simulator by Zwicker, R. D., Atari, N. A.

“…The availability of digital radiographic imaging on simulators has led to the investigation of a number of new imaging possibilities, including digital linear…”
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Comments on shielding for dual energy accelerators by Rossi, M. C., Lincoln, H. M., Quarin, D. J., Zwicker, R. D.

“…Determination of shielding requirements for medical linear accelerators has been greatly facilitated by the publication of the National Council on Radiation…”
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Total craniofacial photon shell technique for radiotherapy of extensive angiosarcomas of the head by KINARD, J. D, ZWICKER, R. D, SCHMIDT-ULLRICH, R. K, KAUFMAN, N, PIETERS, R

“…Abstract Effective radiotherapy for extensive angiosarcomas of the face and scalp is technically difficult due to the complex shape of the volume at risk,…”
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Intensity-modulated stereotactic radiosurgery using dynamic micro-multileaf collimation by Benedict, S H, Cardinale, R M, Wu, Q, Zwicker, R D, Broaddus, W C, Mohan, R

“…The implementation of dynamic leaf motion on a micro-multileaf collimator system provides the capability for intensity-modulated stereotactic radiosurgery…”
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Clinical use of a digital simulator for rapid setup verification in high dose rate brachytherapy by Zwicker, R D, Atari, N A, Kavanagh, B D, Gieschen, H L, Arnfield, M R, Khandelwal, S R, Schmidt-Ullrich, R K

“…Fractionated high dose rate (HDR) brachytherapy provides a number of technical advantages over conventional implant therapy in that (a) it can be carried out…”
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Planning of Ir-192 seed implants for boost irradiation to the breast by Zwicker, R D, Schmidt-Ullrich, R, Schiller, B

“…The conservative management of early stage breast cancer with tumor excision and irradiation of the breast is becoming increasingly accepted as an alternative…”
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Interstitial IR-192 implants of the oral cavity: the planning and construction of volume implants by Schmidt-Ullrich, R, Zwicker, R D, Wu, A, Kelly, K

“…The success of radioactive implant therapy for head and neck carcinomas depends critically on careful planning and execution of the implant procedure. In this…”
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Electron/photon matched field technique for treatment of orbital disease by Arthur, D W, Zwicker, R D, Garmon, P W, Huang, D T, Schmidt-Ullrich, R K

“…A number of approaches have been described in the literature for irradiation of malignant and benign diseases of the orbit. Techniques described to date do not…”
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Tissue compensation using dynamic collimation on a linear accelerator by Gaballa, H E, Mitev, G, Zwicker, R D, Ting, J Y, Tercilla, O F

“…The availability of computer-controlled collimators on some accelerators has led to techniques for dynamic beam modification, mainly to simulate beam wedge…”
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Comparison of dose calibration by ionometric and chemical dosimetry for 6- and 45-MV x-ray beams by Zwicker, R D, Wu, A, Sternick, E S

“…This work reports the results of an experiment carried out to investigate the compatibility of TG-21 ion chamber calibration with Fricke dosimetry near the…”
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Effective wedge angles for 6-MV wedges by Zwicker, R D, Shahabi, S, Wu, A, Sternick, E S

“…Measurements were undertaken with 30 degrees and 45 degrees large wedges on a 6-MV linac to determine the effective wedge angle for various combinations of…”
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