SIRPRISE Challenge Results

The SIRPRISE Challenge provided an opportunity to explore the possibility of standardizing imaging and reconstruction protocols for imaging patients that received Y-90 microspheres therapy. For the Challenge, participants were asked to image a phantom with Y-90 chloride using a set imaging protocol, then reconstruct the images as they see fit. These results were scored according to the discrepancy between ground truth doses to the 37mm sphere and 10mm sphere VOIs. Additionally, participants were asked to provide the unreconstructed projection images in order for the Organizers to reconstruct the images using fixed reconstruction parameters and algorithms. The ultimate answer to the Challenge will be presented at the AAPM 2022 Annual Meeting and reported on in the upcoming publication of the study.

Username	Members	Institutions(s)	Averaged Discrepancy (%)
Moumano	Michael Oumano Jamie Campopiano Laura Buchanan Michelle Schwer Mark Rivard	Rhode Island Hosptial/Brown University	3.5%
maughan.nichole	Nichole M. Maughan Richard Laforest Jose L. Garcia Justin Mikell Alireza Ehtesham Jacqueline E. Zoberi	Washington University at St Louis	30.7%
miaepark	Mi-Ae Park Brooke Pipes	UT Southwestern	31.9%
ContraSpemSpero	Petra Dibbets-Schneider Arjon J. van Lange Jan W.T. Heemskerk Oleksandra V Ivashchenko	Leiden University	33.1%
StevieG	Stephen A. Graves	Iowa University	35.6%
tichacekcj	William R. Gibbons Tuan T. Phung Ghassan El-Haddad Christopher J. Tichacek	Moffitt Cancer Center	42.4%
KurlieJoe	Joe Grudzinski Tyler Bradshaw Bryan Bednarz Tobias Ryden Peter Bernhardt	UW-Madison	47.8%
jrjames	Judy Rose James James Halama Junguo Bian Stephen Karesh Robert Wagner Joseph Ringelstein Nicholas Friedman	Loyola	51.1%
mohdj76	Mohammed Aljallad Ted Steger Lo Chih-Ming	Hartford	99.3%

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