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Pinnacle3 v9 with SmartArc

White Paper
Philips NM Marketing Philips Healthcare USA

Flexibility, precision, efficiency
The integrated SmartArc module, available with Pinnacle3 Version 9, provides the tools to create rotational intensity-modulated radiation therapy (IMRT) plans using a conventional linear accelerator and a conventional multileaf collimator (MLC). SmartArc uses principles developed for both intensity-modulated arc therapy (IMAT)i,ii and volumetric modulated arc therapy (VMAT)i,iii. SmartArc is part of the Pinnacle3 treatment planning solution, in use by 79% of the top cancer centers in the United States. Top centers trust the flexibility, precision and efficiency of Pinnacle3.

Benefits of rotational therapy with the dose painting capabilities of IMRT
The basic promise of VMAT delivery is to significantly reduce treatment time per patient compared with traditional IMRT. VMAT can benefit the patient by offering these shorter treatment times, increasing accuracy and potentially sparing healthy tissue.

Philips SmartArc advanced treatment planning technology allows single- or multiple-user definable arcs and supports both constant and variable dose rate delivery. Constant dose rate delivery allows clinicians to explore the benefits of VMAT delivery without the expense and downtime associated with an upgrade to their linear accelerators. SmartArc is the first commercially released inverse planning solution designed for both Elekta and Varian linear accelerators. This flexibility allows clinicians the freedom to choose the delivery devices that best fit their clinical needs and department configuration.

Key advantages
  • SmartArc plans are delivered while the gantry rotates around the patient.
  • The intensity of the radiation is modulated and the shape of the beam is dynamically adjusted by moving the MLC leaves.
  • The gantry speed and dose rates may also be changed during the rotation.
  • This flexibility provides you with the potential to create plans that are comparable to your standard IMRT plans, but with a shorter treatment time.



  1. Bzdusek, K, et al., Development and evaluation of an efficient approach to volumetric arc therapy planning. Medical Physics 36 (6), pp. 2328-2339, 2009.
  2. Yu, CX. Intensity-modulated arc therapy with dynamic multileaf collimation: An alternative to tomotherapy. Phys Med Biol. 1995; 40; 1435-1449.
  3. Otto, K. Volumetric modulated arc therapy: IMRT in a single gantry arc. Med Phys 2008; 35; 310-317.

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May 3, 2010

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Pinnacle, treatment planning

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