Abstract:
:We show that it is possible to translate an intensity modulated radiation therapy (IMRT) treatment plan and deliver it as a single arc. This technique is referred to in this paper as aperture modulation arc therapy (AMAT). During this arc, the MLC leaves do not conform to the projection of the target PTV and the machine output of the accelerator has a constant value. Dose was calculated using the CORVUS 4.0 IMRT system, which uses a pencil beam dose algorithm, and treatments were delivered using a Varian 2100C/D Clinac. Results are presented for a head and neck and a prostate case, showing the equivalence of the IMRT and the translated AMAT delivery. For a prostate AMAT delivery, coronal plane film dose for the IMRT and AMAT deliveries agreed within 7.19 +/- 6.62%. For a meningioma the coronal plane dose distributions were similar to a value of 4.6 +/- 6.62%. Dose to the isocentre was measured as being within 2% of the planned value in both cases.
journal_name
Phys Med Bioljournal_title
Physics in medicine and biologyauthors
Crooks SM,Wu X,Takita C,Watzich M,Xing Ldoi
10.1088/0031-9155/48/10/307subject
Has Abstractpub_date
2003-05-21 00:00:00pages
1333-44issue
10eissn
0031-9155issn
1361-6560journal_volume
48pub_type
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