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Practical experience with intensity-modulated radiotherapy

Departments of ¹ Radiotherapy Physics and ² Clinical Oncology, The Ipswich Hospital NHS Trust, Heath Road, Ipswich, Suffolk IP4 5PD, UK

View larger version (13K): [in a new window]   Figure 1. Comparison of treatment planning system calculated line dose with measured dose for a sliding window delivery.

View larger version (132K): [in a new window]   Figure 2. Treatment planning system calculated digitally reconstructed radiograph with position of anterior isocentre check field (blue) and corresponding field edge plots from electronic portal imaging (red).

View larger version (131K): [in a new window]   Figure 3. Thermoluminescent dosimeter (TLD) position for in vivo dosimetry within the nasal cavity.

View larger version (58K): [in a new window]   Figure 4. Involved node contours (green) for a thyroid patient.

View larger version (42K): [in a new window]   Figure 5. Concave target volume in transverse plane for a thyroid treatment.

View larger version (19K): [in a new window]   Figure 6. Salivary gland function from scintigraphy a) pre intensity-modulated radiotherapy (IMRT) and b) post IMRT, illustrating some retained function of the left parotid.

View larger version (58K): [in a new window]   Figure 7. Resulting dose distribution from intensity modulated radiotherapy of paraspinal lung volume.

View larger version (51K): [in a new window]   Figure 8. Intensity-modulated radiotherapy planned dose distribution for palliative treatment of right pleura.