ABOUT PARaDIM
PARaDIM is a graphical user interface-based application for absorbed dose calculations in a variety of settings in nuclear medicine and radiation protection. It utilizes anatomically realistic tetrahedral mesh computational phantoms in combination with the well-validated multipurpose Particle and Heavy Ion Transport code System (PHITS) to compute region-level dose and 3D dose distributions with high speed and accuracy. To obtain a copy of PHITS, please visit here.
01 / VERSATILE
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Antibody-, peptide-, or small molecule-based endoradiotherapy
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Brachytherapy
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External radionuclide exposure
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Small-animal dosimetry
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Cell-based dosimetry
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3D dose calculation
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S-value calculation
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Personalized dosimetry
02 / EASY
The methodology PARaDIM utilizes was previously only possible for professionals with an advanced understanding of a select few particle transport codes. PARaDIM requires no coding skills at all, and sophisticated simulations can be configured and run with just a few mouse clicks.
03 / FREE
As a service to the nuclear medicine community, PARaDIM is provided freely.
PARaDIM graphical user interface

GET IT
By downloading our software you consent to the terms of use
DOWNLOAD PARaDIM
DOWNLOAD NEW PHANTOMS
Coming soon.
COMPATIBLE VISUALIZATION TOOLS
PARaDIM is designed with compatibility in mind for absorbed dose analysis/visualization in modern medical imaging software. Links to some of our favorite free software can be found here.
Installation note: After downloading PARaDIM via the link above, unzip the file to a location of your choice. Then just create a shortcut to PARaDIM_Release_<build date>.exe. PARaDIM's documentation/instructions can be accessed from within the program.
Compatibility note: Compatible with PHITS version 3.10+
Windows
macOS
Coming soon.
NEWS
References associated with PARaDIM
Code development
L.M. Carter, T. M. Crawford, T. Sato, T. Furuta, C. Choi, C.H. Kim, J.L. Brown, W.E. Bolch, P.B. Zanzonico, J.S. Lewis. PARaDIM: A PHITS-based Monte Carlo tool for internal dosimetry with tetrahedral mesh computational phantoms. J. Nucl. Med. (2019, 60 (12), 1802-1811. https://doi.org/10.2967/jnumed.119.229013
SUPPORT
For questions or assistance with PARaDIM, please contact carterl1@mskcc.org