Cavity Surface Area Calculator
Tool for estimating the number of GammaTiles to order
Calculating the number
of tiles to order
If you already have a reliable tile estimation process, please continue using it. For those who would like additional guidance, we offer a range of tools and resources to support accurate tile estimation.
Cavity Surface Area Calculator
The GammaTile® Cavity Surface Area Calculator helps estimate the number of tiles needed by calculating the surface area of the at-risk postoperative tumor bed.*
Tumor dimensions
Calculate preoperative (unresected) tumor surface area 
Results
Estimated preoperative (unresected) tumor surface area:
0 cm2
Deduct the surface area to account for estimated surgical cavity contraction and surface area not requiring GammaTiles
% contraction
e.g., skull interface, tissue not at oncologic risk
% contraction
e.g., skull interface, tissue not at oncologic risk
Results
Estimated surface area of cavity needing GammaTiles:
0 cm2
NOTE FOR GAMMATILE USERS: To estimate the number of tiles needed to cover the treatable surface area, divide the tumor bed calculator result by 4, rounding up to the nearest whole number. (GammaTile = 4 cm2)
* GammaTile Calculator: This tool is for use in conjunction with the US instructions for use. Assumes ellipsoidal cavity with expected contraction. Coverage for tumors that don’t meet those requirements won’t meet this model.
The GammaTile Calculator is intended to assist with determining the quantity of GammaTiles needed, based on relevant patient data, for patients undergoing tumor resection surgery with GammaTile.
The GammaTile Calculator is not intended for use in the diagnosis of disease or other conditions, or in the cure, mitigation, treatment, or prevention of disease. THIS WEBSITE IS INTENDED EXCLUSIVELY FOR THE USE OF QUALIFIED AND EXPERIENCED MEDICAL PRACTIONERS.
The tools available on this website do not give professional advice, diagnostic results or treatment decisions. Medical Practitioners who use the GammaTile Calculator should exercise their own clinical judgment as to the information provided.
GT MEDICAL TECHNOLOGIES MAKES NO REPRESENTATION OR WARRANTY WITH RESPECT TO THE USE OF GAMMATILE CALCULATOR, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF MERCHANT ABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE.
Medical Affairs team
proctoring support
Our Medical Affairs team is available to proctor the use of the GammaTile Cavity Surface Area Calculator, if training is desired. Please contact your GammaTile Representative for assistance.
To order GammaTile, please visit the GammaTile Ordering Portal.
The GammaTile Commitment Pledge
for recurrent brain tumors
If a GammaTile treatment of a recurrent brain tumor is canceled because intraoperative pathology reveals only necrotic tissue, we will update the invoice to reflect a $0 charge.**