Results 221 to 230 of about 1,657,830 (258)

Clinical impact of the detector size effect in 3D-CRT

Radiotherapy and Oncology, 2005
The detector size artificially increases the measured penumbra of radiotherapy fields. The aim of this work is to determine the influence of the detector size when planning three-dimensional conformal radiation therapy (3D-CRT) treatments.Two anatomical sites of interest in 3D-CRT were studied: prostate and hypophysis chordoma.
Feliciano, García-Vicente, Maria José, Béjar, Leopoldo, Pérez, Juan J, Torres   +3 more
openaire   +2 more sources

Evaluation of geometrical uncertainties on localized prostate radiotherapy of patients with bilateral metallic hip prostheses using 3D-CRT, IMRT and VMAT: A planning study

Journal of X-Ray Science and Technology, 2020
OBJECTIVE: Since most radiation treatment plans are based on computed tomography (CT) images, which makes it difficult to define the targeted tumor volume located near a metal implant, this study aims to evaluate and compare three treatment plans in ...
R. Soda, Shogo Hatanaka, M. Hariu, M. Shimbo, T. Yamano, K. Nishimura, S. Kondo, Nobuko Utsumi, Takeo Takahashi   +8 more
semanticscholar   +1 more source

Quality assurance of 3D-CRT: Indications and difficulties in their applications

Critical Reviews in Oncology/Hematology, 2009
Although more advanced techniques such as intensity-modulated radiotherapy are rapidly spreading, 3D conformal radiotherapy (3D-CRT) remains the standard of treatment for many diseases. The authors outline essential indications to guarantee the quality of 3D-CRT treatments.
L. Begnozzi, M. Benassi, M. Bertanelli, A. Bonini, L. Cionini, L. Conte, C. Fiorino, P. Gabriele, G. Gardani, A. Giani, S. Magri, M. Morelli, B. Morrica, P. Olmi, R. Orecchia, G. Penduzzu, L. Raffaele, A. Rosi, M. A. Tabocchini, R. Valdagni, V. Viti   +20 more
openaire   +2 more sources

Accelerated partial breast irradiation using 3D conformal radiation therapy (3D-CRT)

International Journal of Radiation Oncology*Biology*Physics, 2002
We present a novel three-dimensional conformal radiation therapy (3D-CRT) technique to treat the lumpectomy cavity, plus a 1.5-cm margin, in patients with early-stage breast cancer and study its clinical feasibility.A 3D-CRT technique for partial-breast irradiation was developed using archived CT scans from 7 patients who underwent an active breathing ...
Kathy L, Baglan, Michael B, Sharpe, David, Jaffray, Robert C, Frazier, Julie, Fayad, Larry L, Kestin, Vincent, Remouchamps, Alvaro A, Martinez, John, Wong, Frank A, Vicini   +9 more
openaire   +2 more sources

Three-dimensional conformal therapy (3D-CRT) for prostate cancer

1996
Three-dimensional conformal therapy (3D-CRT) is the logical outgrowth of the need of radiation oncologists to maximize the radiation dose to the tumor and to minimize the dose to the normal tissues. Only a short time ago, the methods described here were unworkable or inefficient due to constraints of the computer hardware and software required for ...
P J, Chuba, A T, Porter, J D, Forman
openaire   +2 more sources

Abstract GS4-03: RAPID: A randomized trial of accelerated partial breast irradiation using 3-dimensional conformal radiotherapy (3D-CRT)

General Session Abstracts, 2019
Background Whole breast irradiation (WBI) after lumpectomy reduces the risk of local recurrence, thereby avoiding subsequent mastectomy. It is a key component of breast conserving therapy. WBI is usually given in daily fractions over 3-6 weeks.
T. Whelan, J. Julian, M. Levine, T. Berrang, D. Kim, C. Gu, I. Germain, A. Nichol, M. Akra, S. Lavertu, F. Germain, A. Fyles, T. Trotter, F. Perera, S. Balkwill, S. Chafe, T. McGowan, T. Muanza, W. Beckham, B. Chua, I. Olivotto   +20 more
semanticscholar   +1 more source

Comparative between IMRT and 3D-CRT for upper GI malignancies

Physica Medica, 2016
Introduction Adjuvant therapy after surgery in patients diagnosed with tumors of the upper abdominal area is a standard of care. In the field of radiotherapy is a challenge for proximity to PTV of multiple organs at risk (OARs) including spinal cord, liver, kidneys, lungs or heart.
A. Seguro Fernandez, A. Ureña Llinares, L. Diaz Gómez, M.A. Iborra Oquendo   +3 more
openaire   +1 more source

An in silico planning study comparing doses and estimated risk of toxicity in 3D-CRT, IMRT and proton beam therapy of patients with thymic tumours.

Physica medica (Testo stampato), 2019
PURPOSE To compare the dose distributions produced in patients (pts) treated for thymic tumours with spot-scanning proton beam therapy (PBT) implemented with single-field uniform dose (SFUD), intensity-modulated radiation therapy (IMRT) and three ...
A. Lideståhl, Gracinda Mondlane, M. Gubanski, P. Lind, A. Siegbahn   +4 more
semanticscholar   +1 more source

Dosimetric comparison of level II lymph nodes between mono-isocentric and dual-isocentric approaches in 3D-CRT and IMRT techniques in breast radiotherapy of mastectomy patients

Journal of Radiotherapy in Practice, 2019
Aim: To evaluate the dosimetric parameters of level II lymph nodes in chest wall three-dimensional conformal radiotherapy (3D-CRT) and intensity-modulated radiotherapy (IMRT) of mastectomy patients using dual-isocentric (DIT) and mono-isocentric ...
S. Nadi, R. Abedi-Firouzjah, A. Banaei, S. Bijari, M. Elahi   +4 more
semanticscholar   +1 more source

[3D-CRT and intensity modulated radiation therapy (IMRT)].

Gan to kagaku ryoho. Cancer & chemotherapy, 2004
Three-dimensional conformal radiation therapy (3D-CRT) conforms a high dose region closer to the target volume than does 2D radiation therapy. IMRT is the advanced form of 3D-CRT. With IMRT technique, using multiple intensity modulated beams, one can deliver a high dose of radiation to the target and a low dose to the surrounding normal structures ...
Kazuo, Hatano, Yuichiro, Narita, Hiroshi, Araki, Mitsuhiro, Sakai   +3 more
openaire   +1 more source