Synchron Inc. closed out 2021 by providing an opening for a patient with amyotrophic lateral sclerosis (ALS) to send the first thought transferred to a tweet via an implantable brain computer interface. Philip O’Keefe, who received one of the company’s Stentrode implants in April 2020, took over the Twitter account of Sychron CEO Thomas Oxley to say, “Hello, World. Short tweet. Monumental progress.”

In the season of college bowl games, two long-time rivals are vying for another title, the right to claim being the first to install Siemens Healthineers AG’s Magnetom Free.Max magnetic resonance imaging (MRI) system. Both the Ohio State University and the University of Michigan said they were first in the U.S. to put in the recently approved system.

The run on at-home COVID-19 tests may be for naught. The FDA warned that the popular rapid antigen tests recommended to keep New Year’s Eve revelers, relatives visiting elderly grandparents and workers exposed to the coronavirus from spreading COVID-19 are less likely to detect the Omicron variant than earlier strains of the virus. “Early data suggest that antigen tests do detect the Omicron variant but may have reduced sensitivity,” the agency said in an update on Dec. 29. Despite the higher rate of false negatives, the FDA said individuals should continue to use the tests. Those experiencing symptoms or with a high likelihood of infection based on exposure should follow-up with a molecular test if their antigen test returns a negative result.

In a move that will substantially expand the number of livers available for transplantation, the FDA granted premarket approval to Organox Ltd.’s Metra normothermic machine perfusion device for both donors after brain death (DBD) and donors after circulatory death (DCD). The approval allows preservation of organs by Metra for up to 12 hours.

Movendo Technology srl and Maragal Medical PC have collaborated to provide free community screening for the risk of falls for Massachusetts Medicare patients using Movendo’s Hunova robotic technology. Hunova performs a progressive assessment on seated and standing patients to evaluate their flexibility, strength and balance. The system also provides personalized rehabilitative therapy recommendations.

Quidel Corp. reported a definitive agreement to acquire Ortho Clinical Diagnostics Holdings plc in a nearly $6 billion deal expected to close in the first half of 2022. The $24.68 per share offered by Quidel represents a nearly 25% premium over Ortho’s closing price as of Dec. 22. Quidel will also assume $2 billion in debt. In addition, Laboratory Corp. of America Holdings (Labcorp) said it would acquire Baltimore-based Personal Genome Diagnostics Inc., which offers a portfolio of genomics-based liquid biopsy and tissue-based diagnostic products, for $450 million in cash at closing plus up to $125 million contingent on achieving specific performance milestones. That deal is also expected to close in the first half of 2022, pending approval by both companies’ shareholders.

Announcements of new radiology solutions enhanced by artificial intelligence (AI) and machine learning appeared almost daily in 2021, all promising more accurate diagnoses in less time and increased productivity and confidence for radiologists. Hospitals and health care systems have increasingly recognized the advantages of these systems, with Sage Growth Partners reporting that 90% of hospitals have an AI strategy in place, up from 53% in 2019, but the deployment lags, with only 34% of hospitals having installed an AI solution.

Becton, Dickinson and Co. (BD) completed its acquisition of Scanwell Health Inc., its partner in development of the smartphone-enabled BD Veritor At-Home COVID-19 Test, just in time for increased demand driven by the Omicron surge in the U.S. and plans to make the tests available for free by the federal government as well as several states and large municipalities. Currently, most of the tests distributed by governments are made by Abbott Laboratories, which received emergency use authorization (EUA) for its at-home test in March 2021.

2021 may mark the beginning of a new phase in treatment of depression. While genetic matching of depression therapies to patients has been touted for a decade, meta-analyses have not supported claims of improved response rates with studies often finding that any improvements seen likely came from switching patients to guideline-recommended therapies rather than any insight from genetics.

The FDA granted 510(k) clearance to Neuronetics Inc.’s MT Cap technology for the company’s transcranial magnetic stimulation system, Neurostar Advanced Therapy for Mental Health. The MT Cap speeds the process used to determine the dose and motor threshold for treatment with the Neurostar system for major depressive disorder (MDD). The company expects to begin a limited introduction of the product within weeks, with national rollout to follow in the first quarter of 2022.