Use of radiographic features in COVID-19 diagnosis: Challenges and perspectives

Area of Science:

• Medical Imaging
• Infectious Diseases
• Pulmonology

Background:

• The COVID-19 pandemic has strained global healthcare systems, impacting diagnostic capacities.
• Real-time reverse-transcription polymerase chain reaction (RT-PCR) is the primary diagnostic method but has a concerning false-negative rate.
• Limited resources, sampling kit shortages, and long turnaround times for RT-PCR exacerbate diagnostic challenges.

Purpose of the Study:

• To review the challenges and future perspectives of using radiographic modalities for COVID-19 diagnosis.
• To highlight the role of imaging in initial screening and follow-up of COVID-19 patients.
• To explore how imaging can support patient management amidst diagnostic limitations.

Main Methods:

• Review of current literature on the application of radiographic technologies for COVID-19 diagnosis.
• Analysis of computed tomography (CT) and chest X-ray findings in COVID-19 patients.
• Discussion of the sensitivity and specificity of imaging modalities compared to RT-PCR.

Main Results:

• Radiographic imaging, particularly CT, provides detailed pathological features useful for staging and treatment.
• Numerous CT-positive cases were initially missed by RT-PCR, underscoring imaging's complementary role.
• Imaging can identify COVID-19 related pneumonia even when RT-PCR results are negative or delayed.

Conclusions:

• Radiographic modalities are valuable tools for COVID-19 diagnosis, especially when RT-PCR is limited.
• Integrating imaging into diagnostic strategies can improve patient outcomes and resource allocation.
• Further research into optimizing imaging protocols and interpretation is crucial for future pandemic preparedness.