Search Results - "Das, IJ"

Comparison of inhomogeneity correction algorithms in small photon fields by Jones, Andrew O., Das, Indra J.

“…Algorithms such as convolution superposition, Batho, and equivalent pathlength which were originally developed and validated for conventional treatments under…”
Get full text

Proposed guidelines for image-based intracavitary brachytherapy for cervical carcinoma: report from Image-Guided Brachytherapy Working Group by Nag, Subir, Cardenes, Higinia, Chang, Silvia, Das, Indra J, Erickson, Beth, Ibbott, Geoffrey S, Lowenstein, Jessica, Roll, Joye, Thomadsen, Bruce, Varia, Mahesh

“…To present issues to be considered in, and make proposals for, image-based brachytherapy for cervical cancer. The Image-Guided Brachytherapy Working Group,…”
Get more information

Dosimetric considerations for patients with HIP prostheses undergoing pelvic irradiation. Report of the AAPM Radiation Therapy Committee Task Group 63 by Reft, Chester, Alecu, Rodica, Das, Indra J., Gerbi, Bruce J., Keall, Paul, Lief, Eugene, Mijnheer, Ben J., Papanikolaou, Nikos, Sibata, Claudio, Van Dyk, Jake

“…This document is the report of a task group of the Radiation Therapy Committee of the AAPM and has been prepared primarily to advise hospital physicists…”
Get full text

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…”
Get full text

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,…”
Get full text

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…”
Get full text

A dosimetric comparison of various multileaf collimators by Huq, M Saiful, Das, Indra J, Steinberg, Todd, Galvin, James M

“…The dosimetric characteristics of three multileaf collimator (MLC) systems (Elekta, Siemens and Varian) having 10 mm leaf width are compared. A 6 MV photon…”
Get more information

Dose perturbations due to contrast medium and air in MammoSite ® treatment: An experimental and Monte Carlo study by Cheng, C-W, Mitra, R, Allen Li, X, Das, Indra J

“…In the management of early breast cancer, a partial breast irradiation technique called MammoSite (Proxima Therapeutic Inc., Alpharetta, GA) has been advocated…”
Get full text

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…”
Get more information

A Monte Carlo study of IMRT beamlets in inhomogeneous media by Jones, Andrew O., Das, Indra J., Jones, Frederick L.

“…Intensity Modulated Radiation Therapy (IMRT) has trended toward smaller multiple radiation fields thereby increasing the resolution of the intensity map…”
Get full text

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…”
Get more information

Forward dose perturbation at high atomic number interfaces in kilovoltage x-ray beams by Das, Indra J.

“…High atomic number (Z) materials such as lead, used for field shaping and shielding normal tissues in kilovoltage beams could produce significant dose…”
Get full text

Procedures for establishing and maintaining consistent air-kerma strength standards for low-energy, photon-emitting brachytherapy sources: Recommendations of the Calibration Laboratory Accreditation Subcommittee of the American Association of Physicists in Medicine by DeWerd, Larry A., Huq, M. Saiful, Das, Indra J., Ibbott, Geoffrey S., Hanson, William F., Slowey, Thomas W., Williamson, Jeffrey F., Coursey, Bert M.

“…Low dose rate brachytherapy is being used extensively for the treatment of prostate cancer. As of September 2003, there are a total of thirteen 125 I and seven…”
Get full text

Thermal and temporal response of ionization chambers in radiation dosimetry by Das, Indra J., Zhu, Timothy C.

“…The temporal and thermal response of various commonly used ion chambers (NEL, Exradin, PTW) with different wall and electrode materials is studied in a water…”
Get full text

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…”
Get more information

Transmission and dose perturbations with high- Z materials in clinical electron beams by Das, Indra J., Cheng, Chee-Wai, Mitra, Raj K., Kassaee, Alireza, Tochner, Zelig, Solin, Lawrence J.

“…High density and atomic number ( Z ) materials used in various prostheses, eye shielding, and beam modifiers produce dose enhancements on the backscatter side…”
Get full text

Lateral loss and dose discrepancies of multileaf collimator segments in intensity modulated radiation therapy by Cheng, Chee W., Das, Indra J., Huq, M. Saiful

“…In the step-and-shoot technique delivery of intensity modulated radiation therapy (IMRT), each static field consists of a number of beamlets, some of which may…”
Get full text

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…”
Get full text

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…”
Get full text

Modification of Gill-Thomas-Cosman frame for extracranial head-and-neck stereotactic radiotherapy by Kassaee, Alireza, Das, Indra J, Tochner, Zelig, Rosenthal, David I

“…A modification of a commercially available, noninvasive, relocatable, stereotactic Gill-Thomas-Cosman (GTC) head frame is presented for treatment of…”
Get more information