fixed field imrt  (Varian Medical)

Journal: Frontiers in Oncology

Article Title: Which Bone Marrow Sparing Strategy and Radiotherapy Technology Is Most Beneficial in Bone Marrow-Sparing Intensity Modulated Radiation Therapy for Patients With Cervical Cancer?

doi: 10.3389/fonc.2020.554241

Figure Lengend Snippet: Typical dose distributions of the five plans in cervical cancer. (A) IMRT-N, (B) IMRT-BM, (C) IMRT-LS+OC, (D) VMAT-LS+OC, and (E) HT-LS+OC plans.

Article Snippet: Then, we determined the optimal technology for the BMS-IMRT, including fixed-field IMRT (FF-IMRT), volumetric-modulated arc therapy (VMAT), and helical tomotherapy (HT).

Techniques:

Journal: Frontiers in Oncology

Article Title: Which Bone Marrow Sparing Strategy and Radiotherapy Technology Is Most Beneficial in Bone Marrow-Sparing Intensity Modulated Radiation Therapy for Patients With Cervical Cancer?

doi: 10.3389/fonc.2020.554241

Figure Lengend Snippet: The comparison of planning target volume, bone marrow volume, and treatment time in BM-sparing IMRT. Typical dose-volume histograms for planning target volume (purple) and bone marrow (green) (A+C) , histogram for bone marrow volume (B+D) with three different dose limitation strategies for pelvic radiotherapy: IMRT-N, IMRT-BM, and IMRT-LS+OC and three different radiotherapy technologies: IMRT-LS+OC, VMAT-LS+OC, and HT-LS+OC. Typical scatter diagram for treatment time (E) with three different radiotherapy technologies. * P < 0.05, ** P < 0.01, *** P < 0.001. ns: P > 0.05, no statistical significance.

Article Snippet: Then, we determined the optimal technology for the BMS-IMRT, including fixed-field IMRT (FF-IMRT), volumetric-modulated arc therapy (VMAT), and helical tomotherapy (HT).

Techniques: Comparison

Journal: Frontiers in Oncology

Article Title: Which Bone Marrow Sparing Strategy and Radiotherapy Technology Is Most Beneficial in Bone Marrow-Sparing Intensity Modulated Radiation Therapy for Patients With Cervical Cancer?

doi: 10.3389/fonc.2020.554241

Figure Lengend Snippet: Dosimetric parameters for PTV and main OARs in FF-IMRT, VMAT, and TOMO plans.

Article Snippet: Then, we determined the optimal technology for the BMS-IMRT, including fixed-field IMRT (FF-IMRT), volumetric-modulated arc therapy (VMAT), and helical tomotherapy (HT).

Techniques:

Journal: The British Journal of Radiology

Article Title: Volumetric modulated arc therapy: a review of current literature and clinical use in practice

doi: 10.1259/bjr/22373346

Figure Lengend Snippet: Comparative planning studies in prostate cancer

Article Snippet: Another study by Wolff et al [ 59 ] which compared VMAT with serial tomotherapy, fixed field IMRT (SS) and 3D-CRT found lower mean doses to the rectum with tomotherapy and IMRT compared with VMAT plans.

Techniques:

Journal: The British Journal of Radiology

Article Title: Volumetric modulated arc therapy: a review of current literature and clinical use in practice

doi: 10.1259/bjr/22373346

Figure Lengend Snippet: Example of dose distributions in (a,b) IMRT and (c,d) VMAT plans for radiotherapy to prostate (primary planning target volume (PTV)) and pelvic lymph nodes (elective PTV). The dose prescribed to the primary PTV and elective PTV is 74 Gy and 55 Gy in 37 fractions, respectively. The primary PTV (red contour) is encompassed by the 95% isodose (orange line and colour wash) and the elective PTV (pink contour) is encompassed by the 70.6% isodose (dark blue line and light green colour wash). Some sparing of the rectum (brown contour) and bladder (yellow contour) is achieved. Figures courtesy of Department of Medical Physics, Royal Surrey County Hospital, UK.

Article Snippet: Another study by Wolff et al [ 59 ] which compared VMAT with serial tomotherapy, fixed field IMRT (SS) and 3D-CRT found lower mean doses to the rectum with tomotherapy and IMRT compared with VMAT plans.

Techniques:

Journal: The British Journal of Radiology

Article Title: Volumetric modulated arc therapy: a review of current literature and clinical use in practice

doi: 10.1259/bjr/22373346

Figure Lengend Snippet: Comparative planning studies in pelvic malignancies (lower gastrointestinal, gynaecological)

Article Snippet: Another study by Wolff et al [ 59 ] which compared VMAT with serial tomotherapy, fixed field IMRT (SS) and 3D-CRT found lower mean doses to the rectum with tomotherapy and IMRT compared with VMAT plans.

Techniques:

Journal: The British Journal of Radiology

Article Title: Volumetric modulated arc therapy: a review of current literature and clinical use in practice

doi: 10.1259/bjr/22373346

Figure Lengend Snippet: Comparative planning studies in head and neck cancer

Article Snippet: Another study by Wolff et al [ 59 ] which compared VMAT with serial tomotherapy, fixed field IMRT (SS) and 3D-CRT found lower mean doses to the rectum with tomotherapy and IMRT compared with VMAT plans.

Techniques: Irradiation

Journal: The British Journal of Radiology

Article Title: Volumetric modulated arc therapy: a review of current literature and clinical use in practice

doi: 10.1259/bjr/22373346

Figure Lengend Snippet: Example of dose distributions in (a,b) IMRT and (c,d) VMAT plans for oropharyngeal cancer. The dose prescribed to the primary planning target volume (PTV) (encompasses the tumour and involved lymph nodes) and elective PTV (regional lymph nodes at risk of microscopic spread) is 65 Gy and 54 Gy in 30 fractions, respectively. The primary PTV (red contour) is encompassed by the 95% isodose (orange line and colour wash) and the elective PTV (pink contour) is encompassed by the 78.9% isodose (dark blue line and light green colour wash). Some sparing of the parotid gland (light blue contour) is achieved. Figures courtesy of Department of Medical Physics, Royal Surrey County Hospital, UK.

Article Snippet: Another study by Wolff et al [ 59 ] which compared VMAT with serial tomotherapy, fixed field IMRT (SS) and 3D-CRT found lower mean doses to the rectum with tomotherapy and IMRT compared with VMAT plans.

Techniques:

Journal: The British Journal of Radiology

Article Title: Volumetric modulated arc therapy: a review of current literature and clinical use in practice

doi: 10.1259/bjr/22373346

Figure Lengend Snippet: Comparative planning studies in thoracic tumours

Article Snippet: Another study by Wolff et al [ 59 ] which compared VMAT with serial tomotherapy, fixed field IMRT (SS) and 3D-CRT found lower mean doses to the rectum with tomotherapy and IMRT compared with VMAT plans.

Techniques:

Journal: The British Journal of Radiology

Article Title: Volumetric modulated arc therapy: a review of current literature and clinical use in practice

doi: 10.1259/bjr/22373346

Figure Lengend Snippet: Comparative planning studies in central nervous system tumours

Article Snippet: Another study by Wolff et al [ 59 ] which compared VMAT with serial tomotherapy, fixed field IMRT (SS) and 3D-CRT found lower mean doses to the rectum with tomotherapy and IMRT compared with VMAT plans.

Techniques:

Journal: The British Journal of Radiology

Article Title: Volumetric modulated arc therapy: a review of current literature and clinical use in practice

doi: 10.1259/bjr/22373346

Figure Lengend Snippet: Example of dose distributions in (a) IMRT and (b) VMAT plans for malignant glioma. The dose prescribed to the planning target volume (PTV) (red contour) is 60 Gy in 30 fractions. The 95% isodose (green line) is encompassing most of the PTV. There is compromise of PTV coverage to allow sparing of the optic nerves (dark blue contour) and brain stem (pink contour). Figures courtesy of Dr R Shaffer. Reprinted from Int J Radiat Oncology Biol Phys, Vol. 76, No.4, Shaffer R, Nichol AM, Vollans E, Fong M, Nakano S, Moiseenko V et al. A comparison of volumetric modulated arc therapy and conventional intensity-modulated radiotherapy for frontal and temporal high-grade gliomas, pp. 1177-1184, Copyright 2010, with permission from Elsevier [133].

Article Snippet: Another study by Wolff et al [ 59 ] which compared VMAT with serial tomotherapy, fixed field IMRT (SS) and 3D-CRT found lower mean doses to the rectum with tomotherapy and IMRT compared with VMAT plans.

Techniques: Comparison

Journal: The British Journal of Radiology

Article Title: Volumetric modulated arc therapy: a review of current literature and clinical use in practice

doi: 10.1259/bjr/22373346

Figure Lengend Snippet: Comparative planning studies in breast cancer

Article Snippet: Another study by Wolff et al [ 59 ] which compared VMAT with serial tomotherapy, fixed field IMRT (SS) and 3D-CRT found lower mean doses to the rectum with tomotherapy and IMRT compared with VMAT plans.

Techniques: Modification

Journal: The British Journal of Radiology

Article Title: Volumetric modulated arc therapy: a review of current literature and clinical use in practice

doi: 10.1259/bjr/22373346

Figure Lengend Snippet: Comparative planning studies in other tumour sites (lymphoma, intra-abdominal malignancies and paediatric tumours)

Article Snippet: Another study by Wolff et al [ 59 ] which compared VMAT with serial tomotherapy, fixed field IMRT (SS) and 3D-CRT found lower mean doses to the rectum with tomotherapy and IMRT compared with VMAT plans.

Techniques: Irradiation

Journal: The British Journal of Radiology

Article Title: Volumetric modulated arc therapy: a review of current literature and clinical use in practice

doi: 10.1259/bjr/22373346

Figure Lengend Snippet: Example of dose distributions in (a) IMRT and (b) VMAT plans for radiotherapy to a retroperitoneal tumour in a paediatric patient. The planning target volume (PTV) (red contour) is encompassed by the 95% isodose (green line). The organs at risk include liver (blue contour), kidneys (dark orange and light blue), vertebral body (pink contour) and spinal cord (lilac contour). Figures courtesy of Dr R Shaffer. This material is reproduced with permission of John Wiley & Sons, Inc from Pediatr Blood Cancer, 2011, Vol 56, Shaffer R, Vollans E, Vellani R, Welsh M, Moiseenko V, Goddard K. A radiotherapy planning study of RapidArc, Intensity Modulated Radiotherapy, Three-Dimensional Conformal Radiotherapy, and Parallel Opposed Beams in the Treatment of Pediatric Retroperitoneal Tumors, pp.16-23, Copyright 2011Wiley-Liss, Inc [157].

Article Snippet: Another study by Wolff et al [ 59 ] which compared VMAT with serial tomotherapy, fixed field IMRT (SS) and 3D-CRT found lower mean doses to the rectum with tomotherapy and IMRT compared with VMAT plans.

Techniques: