Conformal radiotherapy, intensity-modulated radiotherapy and image-guided radiotherapy

2008 ◽  
pp. 1282-1307
Keyword(s):  
Intensity Modulated Radiotherapy ◽  
Conformal Radiotherapy ◽  
Image Guided Radiotherapy ◽  
Image Guided ◽  
Intensity Modulated

scholarly journals Tumor motion in lung cancers: An overview of four-dimensional radiotherapy treatment of lung cancers

2017 ◽  
Vol 03 (02) ◽  
pp. 128-132
Author(s):  
Anusheel Munshi ◽  
Nilaxi Khataniar ◽  
Tharmar Ganesh
Keyword(s):  
Intensity Modulated Radiotherapy ◽  
Critical Question ◽  
Active Motion ◽  
Image Guided Radiotherapy ◽  
Lung Cancers ◽  
Image Guided ◽  
Intensity Modulated ◽  
A Site ◽  
Head Neck ◽  
Radiotherapy Treatment

AbstractMost modern radiotherapy centers have adopted contouring based treatment. Sparing of the normal structures has been made more achievable than ever before by use of technologies such as Intensity Modulated Radiotherapy (IMRT) and Image guided radiotherapy (IGRT). However, unlike, sites such as brain or head neck, thorax is a site in active motion, mostly contributed by patient's respiratory movement. 4 D radiotherapy, that addresses the issues of motion in thoracic tumours answers this critical question. The present article outlines the scope of need for 4 D radiotherapy and discusses the options available for 4 D treatments of cancer patients.

Treatment delivery, intensity-modulated radiotherapy, and image-guided radiotherapy

2013 ◽  
Author(s):  
Carl Rowbottom
Keyword(s):  
Radiation Dose ◽  
External Beam Radiotherapy ◽  
Intensity Modulated Radiotherapy ◽  
External Beam ◽  
Treatment Delivery ◽  
Image Guided Radiotherapy ◽  
Cancer Management ◽  
Image Guided ◽  
Intensity Modulated ◽  
Complex Processes

Chapter 3 discusses how successful delivery of external beam radiotherapy involves a number of complex processes beginning with the decision by the clinical oncologist to use radiotherapy as part of the patient’s cancer management, through the preparation and planning of the patient’s treatment, to the verification of the patient position and radiation dose delivered at the time of treatment.

scholarly journals Intensity-Modulated and Image-Guided Radiotherapy in Patients with Locally Advanced Inoperable Pancreatic Cancer after Preradiation Chemotherapy

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
M. Sinn ◽  
R. Ganeshan ◽  
R. Graf ◽  
U. Pelzer ◽  
J. M. Stieler ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Overall Survival ◽  
Locally Advanced ◽  
Advanced Pancreatic Cancer ◽  
Intensity Modulated Radiotherapy ◽  
Image Guided Radiotherapy ◽  
Image Guided ◽  
Intensity Modulated ◽  
Kaplan Meier ◽  
Median Dosage

Background. Radiotherapy (RT) in patients with pancreatic cancer is still a controversial subject and its benefit in inoperable stages of locally advanced pancreatic cancer (LAPC), even after induction chemotherapy, remains unclear. Modern radiation techniques such as image-guided radiotherapy (IGRT) and intensity-modulated radiotherapy (IMRT) may improve effectiveness and reduce radiotherapy-related toxicities.Methods. Patients with LAPC who underwent radiotherapy after chemotherapy between 09/2004 and 05/2013 were retrospectively analyzed with regard to preradiation chemotherapy (PRCT), modalities of radiotherapy, and toxicities. Progression-free (PFS) and overall survival (OS) were estimated by Kaplan-Meier curves.Results. 15 (68%) women and 7 men (median age 64 years; range 40–77) were identified. Median duration of PRCT was 11.1 months (range 4.3–33.0). Six patients (27%) underwent conventional RT and 16 patients (73%) advanced IMRT and IGRT; median dosage was 50.4 (range 9–54) Gray. No grade III or IV toxicities occurred. Median PFS (estimated from the beginning of RT) was 5.8 months, 2.6 months in the conventional RT group (conv-RT), and 7.1 months in the IMRT/IGRT group (P=0.029); median OS was 11.0 months, 4.2 months (conv-RT), and 14.0 months (IMRT/IGRT);P=0.141. Median RT-specific PFS for patients with prolonged PRCT>9 months was 8.5 months compared to 5.6 months for PRCT<9 months (P=0.293). This effect was translated into a significantly better median RT-specific overall survival of patients in the PRCT>9 months group, with 19.0 months compared to 8.5 months in the PRCT  <  9 months group (P=0.049).Conclusions. IGRT and IMRT after PRCT are feasible and effective options for patients with LAPC after prolonged preradiation chemotherapy.

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