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MapPhan for Rotational Dosimetry

The MapPHAN is a water equivalent phantom that holds any MapCHECK at isocenter for rotational dosimetry. MapPHAN with MapCHECK has been successfully tested for RapidArc, TomoTherapy, and VMAT, and offers users an accurate and convenient rotational dosimetry solution. Coronal and saggittal measurements are supported, and any new or existing MapCHECK user may upgrade to MapPHAN.

Effective for Head and Neck Cases
A Head and Neck field was delivered to MapPHAN with MapCHECK using a rotational delivery enabled LINAC.

MapPhan for Rotational Dosimetry
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A 98.5% pass rate was achieved using 3% and 3mm DTA criteria in absolute dose mode. A 93.1% pass rate was achieved using 2% and 2mm DTA criteria in absolute dose mode.

The MapPHAN model used with the MapCHECK for the displayed results has a 5 cm water equivalent thickness from both the top and bottom of the measurement plane.


10 x 10cm: Proof of Concept

A 10 x 10 field was delivered to MapPHAN with MapCHECK using a rotational delivery enabled LINAC. A 99.7% pass rate was achieved using 3% and 3mm DTA criteria in absolute dose mode. A 94.8% pass rate was achieved using 2% and 2mm DTA criteria in absolute dose mode.

MapPhan for Rotational Dosimetry
Click image to enlarge

 

 

 

MapPhan for Rotational Dosimetry

Effective for Prostate Cases
A prostate field was delivered to MapPHAN with MapCHECK using a rotational delivery enabled LINAC. A 93.6% pass rate was achieved using 2% and 2mm DTA criteria in absolute dose mode.

MapPhan for Rotational Dosimetry
Click image to enlarge

SPECIFICATIONS

  • Virtual Water™ Construction
  • Cross-hair scribe lines on the top and sides
  • Area 30cm x 31.4cm

There are 3 available MapPHAN sizes. Each size indicates water equivalent thickness from the phantom top and bottom surface to internal measurement plane.

1082000-0 MapPhan for Rotational Dosimetry (MapCHECK), 5cm size
1082000-1 MapPhan for Rotational Dosimetry, 10cm size
1082000-2 MapPhan for Rotational Dosimetry, 15cm size

1083000-0 MapPHAN MC2 (5cm) for Rotational Dosimetry, ( MapCHECK2), 5cm size
1083000-1 MapPHAN MC2 (5cm) for Rotational Dosimetry, ( MapCHECK2), 10cm size
1083000-2 MapPHAN MC2 (5cm) for Rotational Dosimetry, ( MapCHECK2), 15cm size