Dosimetric comparisons of helical tomotherapy treatment plans and step-and-shoot intensity-modulated radiosurgery treatment plans in intracranial stereotactic radiosurgery

Han, Chunhui; Liu, An; Schultheiss, Timothy E.; Pezner, Richard D.; Chen, Yi Jen; Wong, Jeffrey Y.C.

doi:10.1016/j.ijrobp.2006.01.045

Cited by 62 publications

(38 citation statements)

References 22 publications

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“…HT has proven to be an accurate system for delivering a high dose to a small target also with the requirements of the radiosurgery (3). The first dosimetric data published from several years show that HT can be effectively used for radiosurgery (11,22).…”

Section: Discussionmentioning

confidence: 99%

Radiosurgery with Helical Tomotherapy

Barra

Agostinelli

Vagge

et al. 2014

Technol Cancer Res Treat

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Section: Discussionmentioning

confidence: 99%

Radiosurgery with Helical Tomotherapy

Barra

Agostinelli

Vagge

et al. 2014

Technol Cancer Res Treat

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“…The Conformity/Gradient Index (CGI) of Wagner et al (1) has been widely used and quoted in the literature 11 , 15 . The CGI index averages the components of dose conformity and dose gradient.…”

Section: Discussionmentioning

confidence: 99%

Unified dosimetry index (UDI): a figure of merit for ranking treatment plans

Akpati

Chang-Seon

Kim

et al. 2008

J Applied Clin Med Phys

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We have formulated a unified dosimetry index (UDI) that computes, for any given treatment plan, its deviations in terms of dose coverage, conformity, homogeneity, and dose gradient vis‐à‐vis an ideal plan (which we define as a dosimetry plan of perfect dose coverage, conformity, homogeneity, and step‐wise fall‐off to zero dose outside the planning target volume). In order to validate the UDI scoring system, 21 stereotactic cranial radiosurgery cases were evaluated retrospectively. The cases were planned on the BrainSCAN treatment planning system (BrainLAB, Feldkirchen, Germany) using 6 to 8 non‐coplanar static beams collimated with the micro multi‐leaf collimator (mMLC). We suggest a technique for creating a ranking system that can be utilized for plan evaluation and comparison between multiple plans. Under this system treatment plans are classified as “excellent”, “good”, “average”, or “poor”. The proposed ranking system can be utilized as a general guide for generating an optimal dosimetry plan for external beam radiation therapy.

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“…Treatments are optimized from 51 projections and can be conceptualized as IMRT beams delivered from 51 equally spaced angles. The benefit of HT in improving dose homogeneity and a reduced dose to critical structures have been reported in prostate cancer [11], nasopharyngeal cancer [12], other head and neck cancer [13], breast cancer [14], and intracranial tumors [15]. …”

Section: Htmentioning

confidence: 99%