scholarly journals Real‐time 4DMRI‐based internal target volume definition for moving lung tumors

2020 ◽  
Vol 47 (4) ◽  
pp. 1431-1442 ◽  
Author(s):  
Moritz Rabe ◽  
Christian Thieke ◽  
Mathias Düsberg ◽  
Sebastian Neppl ◽  
Sabine Gerum ◽  
...  
Keyword(s):  
Real Time ◽  
Target Volume ◽  
Lung Tumors ◽  
Internal Target ◽  
Internal Target Volume ◽  
Target Volume Definition

SU-E-J-78: Internal Target Volume Delineation for Lung Tumors in Patients Treated with Robotic Radiosurgery

2014 ◽  
Vol 41 (6Part7) ◽  
pp. 173-173
Author(s):  
M Descovich ◽  
D Pinnaduwage ◽  
N Kirby ◽  
A Gottschalk ◽  
S Yom ◽  
...  
Keyword(s):  
Target Volume ◽  
Lung Tumors ◽  
Internal Target ◽  
Internal Target Volume ◽  
Target Volume Delineation ◽  
Robotic Radiosurgery ◽  
Volume Delineation

scholarly journals Investigation of 4D dose in volumetric modulated arc therapy-based stereotactic body radiation therapy: does fractional dose or number of arcs matter?

2020 ◽  
Vol 61 (2) ◽  
pp. 325-334
Author(s):  
Takashi Shintani ◽  
Mitsuhiro Nakamura ◽  
Yukinori Matsuo ◽  
Yuki Miyabe ◽  
Nobutaka Mukumoto ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Stereotactic Body Radiation Therapy ◽  
Volumetric Modulated Arc Therapy ◽  
Target Volume ◽  
Lung Tumors ◽  
Internal Target ◽  
Internal Target Volume ◽  
Stereotactic Body Radiation ◽  
Arc Therapy ◽  
Fractional Dose

Abstract The aim of this study was to assess the impact of fractional dose and the number of arcs on interplay effects when volumetric modulated arc therapy (VMAT) is used to treat lung tumors with large respiratory motions. A three (fractional dose of 4, 7.5 or 12.5 Gy) by two (number of arcs, one or two) VMAT plan was created for 10 lung cancer cases. The median 3D tumor motion was 17.9 mm (range: 8.2–27.2 mm). Ten phase-specific subplans were generated by calculating the dose on each respiratory phase computed tomography (CT) scan using temporally assigned VMAT arcs. We performed temporal assignment of VMAT arcs using respiratory information obtained from infrared markers placed on the abdomens of the patients during CT simulations. Each phase-specific dose distribution was deformed onto exhale phase CT scans using contour-based deformable image registration, and a 4D plan was created by dose accumulation. The gross tumor volume dose of each 4D plan (4D GTV dose) was compared with the internal target volume dose of the original plan (3D ITV dose). The near-minimum 4D GTV dose (D99%) was higher than the near-minimum 3D internal target volume (ITV) dose, whereas the near-maximum 4D GTV dose (D1%) was lower than the near-maximum 3D ITV dose. However, the difference was negligible, and thus the 4D GTV dose corresponded well with the 3D ITV dose, regardless of the fractional dose and number of arcs. Therefore, interplay effects were negligible in VMAT-based stereotactic body radiation therapy for lung tumors with large respiratory motions.

scholarly journals Evaluation of irregular breathing effects on Internal Target Volume definition for lung cancer radiotherapy

2021 ◽  
Author(s):  
Kenneth A Wikström ◽  
Ulf M Isacsson ◽  
Marta C Pinto ◽  
Kristina M Nilsson ◽  
Anders Ahnesjö
Keyword(s):  
Lung Cancer ◽  
Target Volume ◽  
Internal Target ◽  
Internal Target Volume ◽  
Cancer Radiotherapy ◽  
Target Volume Definition ◽  
Irregular Breathing

scholarly journals EP-1162 Internal Target Volume interfraction changes and dose coverage in Stereotactic Body Radiotherapy for lung tumors

2015 ◽  
Vol 115 ◽  
pp. S631-S632
Author(s):  
J.L. Monroy Anton ◽  
J. Hernandis Barbera ◽  
M. Soler Tortosa ◽  
M. Lopez Muñoz ◽  
A.V. Navarro Bergada ◽  
...  
Keyword(s):  
Stereotactic Body Radiotherapy ◽  
Target Volume ◽  
Lung Tumors ◽  
Internal Target ◽  
Internal Target Volume

scholarly journals EP-1426: A model for internal target volume definition based on 4D-cone beam computed tomography

2017 ◽  
Vol 123 ◽  
pp. S761-S762
Author(s):  
M. Di Tommaso ◽  
A. Allajbej ◽  
L. Caravatta ◽  
S. Giancaterino ◽  
G. Di Girolamo ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Target Volume ◽  
Cone Beam ◽  
Internal Target ◽  
Internal Target Volume ◽  
Target Volume Definition

PO-0690 INTERNAL TARGET VOLUME MARGINS FOR PROSTATE AND SEMINAL VESICLES ASSESSED WITH CINE-MRI

2012 ◽  
Vol 103 ◽  
pp. S268-S269
Author(s):  
S. Gill ◽  
K. Dang ◽  
C. Fox ◽  
M. Bressel ◽  
N. Bergen ◽  
...  
Keyword(s):  
Target Volume ◽  
Seminal Vesicles ◽  
Cine Mri ◽  
Internal Target ◽  
Internal Target Volume
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