Search Results - "Das, I J"

Gold microspheres: a selective technique for producing biologically effective dose enhancement by HEROLD, D. M, DAS, I. J, STOBBE, C. C, IYER, R. V, CHAPMAN, J. D

“…Purpose : To investigate dose enhancement and radiosensitization associated with electrons produced and scattered from gold particles suspended in cells in…”
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Monte Carlo dosimetry study of a 6 MV stereotactic radiosurgery unit by Verhaegen, F, Das, I J, Palmans, H

“…Small-field and stereotactic radiosurgery (SRS) dosimetry with radiation detectors, used for clinical practice, have often been questioned due to the lack of…”
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Monte Carlo modelling of a virtual wedge by Verhaegen, F, Das, I J

“…Compared with a set of physical photon wedges, a non physical wedge (virtual or dynamic wedge), realized by a moving collimator jaw, offers an alternative that…”
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Lung and heart dose volume analyses with CT simulator in radiation treatment of breast cancer by Das, I J, Cheng, E C, Freedman, G, Fowble, B

“…Radiation pneumonitis and cardiac effects are directly related to the irradiated lung and heart volumes in the treatment fields. The central lung distance…”
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The effect of slice thickness on target and organs at risk volumes, dosimetric coverage and radiobiological impact in IMRT planning by Srivastava, S. P., Cheng, C.-W., Das, I. J.

“…Purpose Dose–volume histogram (DVH) has become an important tool for evaluation of radiation outcome as reflected from many clinical protocols. While…”
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Condensed Chromatin and Cell Inactivation by Single-Hit Kinetics by Chapman, J. D., Stobbe, C. C., Gales, T., Das, I. J., Zellmer, D. L., Biade, S., Matsumoto, Y.

“…Mammalian cells are extremely sensitive to γ rays at mitosis, the time at which their chromatin is maximally condensed. The radiation-induced killing of…”
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Efficacy of a belly board device with CT-simulation in reducing small bowel volume within pelvic irradiation fields by Das, I J, Lanciano, R M, Movsas, B, Kagawa, K, Barnes, S J

“…Acute and chronic small bowel toxicity associated with pelvic irradiation limits dose escalation for both chemotherapy and radiotherapy for rectal cancer…”
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Range shift and dose perturbation with high-density materials in proton beam therapy by Nichiporov, D., Moskvin, V., Fanelli, L., Das, I.J.

“…Radiotherapy with proton beams requires accurate knowledge of the proton range. When materials with high atomic numbers ( Z) and densities (e.g. prostheses or…”
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Comparison of beam characteristics in intensity modulated radiation therapy (IMRT) and those under normal treatment condition by Cheng, C.-W., Das, I. J.

“…In the step-and-shoot delivery of an IMRT plan with a Siemens Primus accelerator, radiation is turned off by desynchronizing the injector while the field…”
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Characteristics of bremsstrahlung in electron beams by Zhu, Timothy C., Das, Indra J., Bjärngard, Bengt E.

“…Clinical electron beams contain an admixture of bremsstrahlung produced in structures in the accelerator head, in field-defining cerrobend or lead cutouts, and…”
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Treatment plan evaluation using dose-volume histogram (DVH) and spatial dose-volume histogram (zDVH) by Cheng, C W, Das, I J

“…The dose-volume histogram (DVH) has been accepted as a tool for treatment-plan evaluation. However, DVH lacks spatial information. A new concept, the…”
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Beam angle selection for intensity-modulated radiotherapy (IMRT) treatment of unresectable pancreatic cancer: are noncoplanar beam angles necessary? by Chang, D. S., Bartlett, G. K., Das, I. J., Cardenes, H. R.

“…Background and purpose External beam radiation therapy with concurrent chemotherapy (CRT) is widely used for the treatment of unresectable pancreatic cancer…”
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Radiation Fields Backscattered from Material Interfaces: I. Biological Effectiveness by Zellmer, D. L., Chapman, J. D., Stobbe, C. C., Xu, F., Das, I. J.

“…Confluent cultures of CHO-K1 and CHO-xrs5 cells were irradiated attached to 6 μm Mylar with 137 Cs γ rays and 200 kVp X rays adjacent to scattering materials…”
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Broad beam attenuation of kilovoltage photon beams: effect of ion chambers by Das, I J

“…In kilovoltage X-ray treatment, beam shaping and shielding normal tissue are accomplished by thin sheets of lead cutout, the thickness of which is selected…”
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SU‐E‐T‐483: Factors Contributing to the Increased Proton RBE at the Distal Edge of Bragg Peak by Cheng, C‐W, Takashina, M, Suga, M, Das, IJ, Moskvin, V

“…Purpose: RBE in proton beam is variable and it is expected that the values are different at Bragg peak. This is investigated using Monte Carlo simulation. The…”
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Response: Re: Intensity-Modulated Radiation Therapy Dose Prescription, Recording, and Delivery: Patterns of Variability Among Institutions and Treatment Planning Systems by Das, I. J., Cheng, C. W., Chopra, K. L., Mitra, R. K., Srivastava, S. P., Glatstein, E.

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Validation of a new virtual wedge model by Desobry, G. E., Waldron, T. J., Das, I. J.

“…Results of a validation study of a commercial virtual wedge device recently installed at our institution are presented. The wedge simulation produces an energy…”
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SU‐FF‐T‐365: Dosimetry QA of Scanned Proton Beam with An Ion Chamber Array by Zhao, Li, Simon, W, Das, IJ

“…Purpose: To investigate an IC Profiler for clinical proton dosimetry QA. Methods and Materials: An IC Profiler (model 1122) (Sun Nuclear Corporation,…”
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Backscatter dose perturbation at high atomic number interfaces in megavoltage photon beams by Das, I J, Kahn, F M

“…Most computer algorithms used clinically for photon beam treatment planning are unable to predict the effect of electron backscattering on dose distribution…”
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Ionization chamber shift correction and surface dose measurements in electron beams by Das, I J, McNeeley, S W, Cheng, C W

“…Cylindrical ionization chambers produce perturbations (gradient and fluence) in the medium, and hence the point of measurement is not accurately defined in…”
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