With the COVID-19 pandemic having lasted more than 3 years, concerns are growing about
prolonged symptoms and respiratory complications in COVID-19 survivors, collectively …

Oscillometry has been around for almost 70 years, but there are still many unknowns. The
test is performed during tidal breathing and is therefore free from patient-dependent factors …

Background Pulmonary perfusion defects have been observed in patients with coronavirus
disease 2019 (COVID‐19). Currently, there is a need for further data on non‐contrast …

The respiratory consequences of acute COVID‐19 infection and related symptoms tend to
resolve 4 weeks post‐infection. However, for some patients, new, recurrent, or persisting …

Lingering breathing difficulties are common after COVID‐19. However, the underlying
causes remains unclear, with spirometry often being normal. We hypothesized that small …

Pathophysiologic changes in lung diseases are often accompanied by changes in
ventilation and gas exchange. Comprehensive evaluation of lung function cannot be …

Assessing the effectiveness of nanomedicines involves evaluating the drug content at the
target site. Currently, most research focuses on monitoring the signal responses from loaded …

Background Small airways disease (SAD), a novel finding described in post-acute COVID-
19 patients, should be suspected when respiratory symptoms continue, air trapping persists …

Editor: We appreciated the editorial (1) about our study (2), published in Radiology on
February 7, 2023. We thank Dr Vogel-Claussen for his insightful analysis and commentary …

Dr Jens Vogel-Claussen is a professor of radiology, section chief of cardiopulmonary
imaging, and vice chair of the Department of Radiology at Hannover Medical School. His …