Quantification of Trade-Off Between Parotid Gland Sparing and Planning Target Volume Underdosages in Clinically Node-Negative Head-and-Neck Intensity-Modulated Radiotherapy

2007 ◽  
Vol 68 (1) ◽  
pp. 136-143 ◽  
Author(s):  
Wilhelmus J.M. de Kruijf ◽  
Ben J.M. Heijmen ◽  
Peter C. Levendag
Keyword(s):  
Parotid Gland ◽  
Head And Neck ◽  
Planning Target Volume ◽  
Intensity Modulated Radiotherapy ◽  
Target Volume ◽  
Node Negative ◽  
Trade Off ◽  
Intensity Modulated

Study of dosimetric indices and dose constraints to critical organs for head and neck tumours treated with inverse planned simultaneous integrated boost intensity-modulated radiotherapy

2017 ◽  
Vol 17 (2) ◽  
pp. 179-187
Author(s):  
Atia Atiq ◽  
Maria Atiq ◽  
Khalid Iqbal ◽  
Qurat-ul-ain Shamsi ◽  
Saeed Ahmad Buzdar
Keyword(s):  
Head And Neck Cancer ◽  
Head And Neck ◽  
Cancer Patients ◽  
Planning Target Volume ◽  
Dose Distribution ◽  
Intensity Modulated Radiotherapy ◽  
Target Volume ◽  
Intensity Modulated ◽  
Tolerance Dose ◽  
Integrated Boost

AbstractAimThis study aimed to investigate tolerance dose to organs at risk (OARs) as well as degree of conformity and homogeneity for head and neck cancer patients by using simultaneous integrated boost intensity-modulated radiotherapy technique (SIB IMRT).Materials and methodsThis study analysed 15 head and neck cancer patients receiving treatment using inverse planned SIB IMRT technique. Using a beam energy of 6 MV, two dose levels of 70 and 55·4 Gy were used to treat the tumour. Doses of 2 Gy in 35 fractions and 1·68 Gy in 33 fractions were simultaneously delivered for effective planning target volume (PTV1) and boost planning target volume (PTV2), respectively.ResultsDose distribution in PTV and critical organs lies within tolerance dose guidelines protecting spinal cord, brain stem, optic chiasm, optic nerve, thus reducing the risk of damage to normal tissues. Minor deviation from tolerance limit was observed for parotid glands. This technique provided highly conformal and homogenous dose distribution as well as better sparing of OARs, hence verifying quality assurance results to be satisfactory.FindingsSIB IMRT technique offers best solution for preserving organ function by keeping dose below tolerance level. Treatment of head and neck carcinoma using SIB IMRT is feasible, more efficient, and dose escalation is achieved in a single plan.

scholarly journals Parotid Gland Dose in Intensity-Modulated Radiotherapy for Head and Neck Cancer: Is What You Plan What You Get?

2007 ◽  
Vol 69 (4) ◽  
pp. 1290-1296 ◽  
Author(s):  
Jennifer C. O'Daniel ◽  
Adam S. Garden ◽  
David L. Schwartz ◽  
He Wang ◽  
Kian K. Ang ◽  
...  
Keyword(s):  
Head And Neck Cancer ◽  
Parotid Gland ◽  
Head And Neck ◽  
Neck Cancer ◽  
Intensity Modulated Radiotherapy ◽  
Intensity Modulated
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