Q: Is MAPcalc intended to replace the MapCHECK?
Q: Does MAPcalc use a “3 source” or “2 source” model?

Q: Which Linac/MLC and TPS vendors does MAPcalc support?

Q: Is MAPcalc intended to replace the MapCHECK?
A: No. MapCHECK is still the gold standard for IMRT QA. Only MapCHECK uses ultra-small diodes to independently measure the absolute dose output of an IMRT beam. MAPcalc is a supplement to MapCHECK that offers two new tools for the physicist. The first is an independent 2D dose calculation for routine cases where the presence of proper machine & MLC QA do not necessitate an independent measurement. The second is an independent Monitor Unit (MU) calculation that normally accompanies any independent IMRT QA.

Q: Does MAPcalc use a “3 source” or “2 source” model?
A: MAPcalc employs a new and advanced 2-source model that offers equivalent results to a traditional 3 source model, but with less computational times. Details and presentations are available upon request.

Q: Which Linac/MLC and TPS vendors does MAPcalc support?
A: Support for all major RTP/Linac/R&V vendors is provided. If a requested OEM system is not supported Sun Nuclear will create an interface.

Q: What are the primary advantages of MAPcalc?
A:

1. MAPcalc integrates MU calculations directly into the IMRT plan QA process. 

2. MAPcalc generates 2D dose maps for MLC based IMRT fields independently and without the need for a separate measurement.

3. MAPcalc operates completely within the MapCHECK software and is therefore easy to use and implement.

Q: How long does it take to complete the physics modeling?
A: This physics modeling is completed in approximately 20 minutes.

Q:  Will MAPcalc provide MU calc functionality for non IMRT fields?
A: Yes. MAPcalc will also support MU calc functionality for non IMRT fields such as: open blocks, wedges, dynamic and virtual wedges, diodes, electrons, etc. In a future release MAPcalc will also support solid compensator based IMRT.