Journal: Journal of Applied Clinical Medical Physics

Article Title: Impact of systematic MLC positional uncertainties on the quality of single‐isocenter multi‐target VMAT‐SRS treatment plans

doi: 10.1002/acm2.13708

Figure Lengend Snippet: (a) The StereoPHAN phantom and the SRS mapCHECK diode array positioned on the couch for CT scanning. (b) An axial CT slice of the diode array with the TPS‐calculated dose distribution corresponding to the clinically used leaf offset parameter. Contours legend: targets: red, blue, and purple; brainstem‐like critical organ: green

Article Snippet: In specific, the StereoPHAN phantom in combination with the SRS mapCHECK diode array (both Sun Nuclear Corp., Melbourne, FL) was used in a plan QA procedure.

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Journal: Journal of Applied Clinical Medical Physics

Article Title: Implementation of Tomo EDGE in the independent dose calculator CheckTomo

doi: 10.1002/acm2.12048

Figure Lengend Snippet: Dose profiles of the plans calculated in the TomoPhant for varying PTV length, for the 2.5 cm field width (a) and 5 cm (b). Plain line corresponds to the dose calculated by the tomotherapy TPS and dots to CheckTomo dose points.

Article Snippet: For each case, the mean dose difference ( Δ D ̄ ) and global gamma comparison tests between the CheckTomo and the tomotherapy TPS dose distributions were calculated.

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Journal: Journal of Applied Clinical Medical Physics

Article Title: Implementation of Tomo EDGE in the independent dose calculator CheckTomo

doi: 10.1002/acm2.12048

Figure Lengend Snippet: Coronal view of the relative difference, given in percent, between the CheckTomo and the tomotherapy TPS dose of a pelvis plan. As one can see in figure (a), the dose is miscalculated in both edges of the target volume. The error is corrected by applying a 1 mm shift in the longitudinal direction ( IEC ‐y) to the TPS dose distribution, as shown in figure (b).

Article Snippet: For each case, the mean dose difference ( Δ D ̄ ) and global gamma comparison tests between the CheckTomo and the tomotherapy TPS dose distributions were calculated.

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Journal: Journal of Radiation Research

Article Title: Statistical process control analysis for patient-specific IMRT and VMAT QA

doi: 10.1093/jrr/rrs112

Figure Lengend Snippet: The setting up of ( a ) MapCHECK for patient-specific IMRT verification; and ( b ) ArcCHECK for patient-specific VMAT verification.

Article Snippet: In this work, we selected MapCHECK (Sun Nuclear Corporation, Melbourne, FL) as a 2D diode array to verify the patient-specific IMRT QA, and used ArcCHECK for 3D diode arrays to perform patient-specific VMAT QA.

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Journal: Technology in Cancer Research & Treatment

Article Title: Outcomes of Spatially Fractionated Radiotherapy (GRID) for Bulky Soft Tissue Sarcomas in a Large Animal Model

doi: 10.1177/1533034617690980

Figure Lengend Snippet: Percentage depth dose (PDD) of the 6-MV photon 15 cm × 15 cm GRID filed, through the central opening of the GRID collimator. The GRID factor is defined as the ratio of dose at D max of a GRID field of given size and dose at D max of a 10 × 10 cm field under machine output calibration condition, times the machine output factor of 1 cGy/MU. We determined the relative dose ratio by measuring the dose on the central diode detector of a MapCHECK array system from a given GRID field radiation and a 10 × 10 cm field radiation under the same setup (100 cm SSD, central axis, with no additional build-up). We assumed that the depth difference between 6 MV D max (1.5 cm) and the measurement depth (2 cm) has negligible effect on the relative GRID factor measurement. SSD = Source to surface distance.

Article Snippet: The GRID factor is a function of field size and photon energy (6 and 10 MV) is measured using an ion chamber (PTW 30013 Waterproof Farmer Chamber; RD Inc, Albertville, Minnesota) and Mapcheck QA device (Sun Nuclear Corp, Melbourne, Florida).

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