Shah N, Ragaswamy HB, Govindugari K, Estanol L. Performance of three new-generation pulse oximeters during motion and low perfusion in volunteers. J Clin Anesth. 2012 Aug;24(5):385-91. Epub: 2012 May 22. doi: 10.1016/j.jclinane.2011.10.012. PMID: 22626683.
Measurements from the Masimo Radical are compared to those from the Nellcor N-600 and the Datex-Ohmeda TruSat, though not in a formal validation.
Kohyama T, Moriyama K, Kanai R, Kotani M, Uzawa K, Satoh T, Yorozu T. Accuracy of pulse oximeters in detecting hypoxemia in patients with chronic thromboembolic pulmonary hypertension. PLoS One. 2015 May 15;10(5):e0126979. doi: 10.1371/journal.pone.0126979. PMID: 25978517. Available from: PMC4433184. Erratum in: PLoS One. 2015 Oct 28;10(10):e0141944.
Measurements from the Masimo Radical with an LNOP Neo-L probe are compared to those from the Nihon-Kohden OLV-3100 with a TL-273T3 probe and the Nellcor N-BS with a D-25 probe, though not in a formal validation.