News | Coronavirus (COVID-19) | March 06, 2020

Wuhan CT Scans Reliable for Coronavirus Diagnosis, Limited for Differentiation

Chest CTs have low rate of misdiagnosis and can standardize imaging features and transformation rules for rapid diagnosis, yet modality is limited for identification of and distinguishing between specific viruses

#COVID19 #Coronavirus #2019nCoV #Wuhanvirus

Flowchart shows time difference between positive laboratory test results and positive CT findings for COVID-19 and adenovirus infection in the study group. Image courtesy of American Journal of Roentgenology (AJR)

March 6, 2020 — An article by radiologists from Wuhan, China — published open-access and ahead-of-print in the American Journal of Roentgenology (AJR) — concluded that chest CT had a low rate of misdiagnosis of COVID-19 (3.9 percent, 2/51) and could help standardize imaging features and rules of transformation for rapid diagnosis; however, CT remains limited for the identification of specific viruses and distinguishing between viruses.

Yan Li and Liming Xia at Tongji Hospital in Hubai Province studied the first 51 patients diagnosed with COVID-19 infection confirmed by nucleic acid testing (23 women and 28 men; age range, 26-83 years) and two patients with adenovirus (one woman and one man; ages, 58 and 66 years). In their retrospective cohort of 53 patients, as of February 9, a total of 99 chest CT examinations had been performed.

Comparing image reports of the initial CT study with laboratory test results to identify patterns suggestive of viral infection, according to Li and Xia, "COVID-19 was misdiagnosed as a common infection at the initial CT study in two patients with underlying disease and COVID-19."

Meanwhile, viral pneumonia was correctly diagnosed at the initial CT study in the remaining 49 patients with COVID-19 and two patients with adenovirus.

As Li and Xia explained: "CT of one of the two patients with confirmed adenovirus infection showed ill-defined patchy ground-glass opacities (GGOs), segmental and subpleural consolidations in both lungs, and pleural effusion. CT of the other patient showed subpleural GGOs and consolidation with vascular enlargement, interlobular septal thickening, and air bronchogram sign."

The CT findings seen in Li and Xia's two adenovirus cases were similar to those observed in their COVID-19 cases.

The two authors also found CT features of COVID-19 that differ from both severe acute respiratory syndrome coronavirus (SARS-CoV) and Middle East respiratory syndrome coronavirus (MERS-CoV): a reversed halo sign in two patients (3.9 percent) and pulmonary nodules with a halo sign in nine patients (17.6 percent).

"These findings are not mentioned, to our knowledge, in the studies in the literature," the authors noted.

"It is valuable for radiologists to recognize that the CT findings of COVID-19 overlap with the CT findings of diseases caused by viruses from a different family, such as adenovirus, and have differences as well as similarities with viruses within the same family, such as SARS-CoV and MERS-CoV," added Li and Xia.

For more information: www.arrs.org

Additional COVID-19 Resources for Clinicians:

World Health Organization (WHO) COVID-19 situation reports

World Health Organization (WHO) coronavirus information page

U.S. Food and Drug Administration (FDA) COVID-19 information page

Centers for Disease Control (CDC) COVID-19 information page

Related Coronavirus Content:

The Cardiac Implications of Novel Coronavirus

CT Provides Best Diagnosis for Novel Coronavirus (COVID-19)

Radiology Lessons for Coronavirus From the SARS and MERS Epidemics

Deployment of Health IT in China’s Fight Against the COVID-19 Epidemic

Emerging Technologies Proving Value in Chinese Coronavirus Fight

Radiologists Describe Coronavirus CT Imaging Features

Coronavirus Update from the FDA

CT Imaging of the 2019 Novel Coronavirus (2019-nCoV) Pneumonia

CT Imaging Features of 2019 Novel Coronavirus (2019-nCoV)

Chest CT Findings of Patients Infected With Novel Coronavirus 2019-nCoV Pneumonia 

Find more related clinical content Coronavirus (COVID-19)

Related Content

News | Breast Imaging | September 20, 2021
September 20, 2021 — ImageCare Centers is unveiling its new “PINK Better Mammo” service with the addition of...
Shimadzu Medical Systems USA, a leading manufacturer of advanced medical X-ray imaging systems, has announced that the Trinias unity edition product line has been awarded a contract from Vizient, Inc., a healthcare performance improvement company, effective Sept. 1, 2021.
News | X-Ray | September 17, 2021
September 17, 2021 — Shimadzu Medical Systems USA, a leading manufacturer of advanced medical...
Avoiding contrast dyes for imaging tests not necessary if concerned about iodine allergy, peer-reviewed study concludes #MRI

Getty Images

News | Contrast Media Injectors | September 16, 2021
September 16, 2021 — FDB (First Databank), a leading provider of drug and medical device knowledge that helps healthc
Strategies to help guide nuclear radiology teams at various healthcare systems in 2021 and beyond
Feature | Nuclear Imaging | September 16, 2021 | By Staff of the American Society of Nuclear Cardiology (ASNC)
A year after COVID-19 turned the world upside do
This is an example of 3-D ultrasound imaging on a breast, designed to help increase efficiency and diagnostic accuracy in any practice. Image courtesy of Hologic.

This is an example of TriVu ultrasound imaging on a breast, designed to help increase efficiency and diagnostic accuracy in any practice. Image courtesy of Hologic.

Feature | Breast Imaging | September 15, 2021 | By Jennifer Meade
The...
Revised guidelines for lung cancer screening eligibility are perpetuating disparities for racial/ethnic minorities, according to a new study in Radiology.

Getty Images

News | Lung Imaging | September 15, 2021
September 15, 2021 — Revised guidelines for...
Revenues for teleradiology reading service providers are forecast to follow a similar profile over this period.

Outlook for 2021 and Beyond. As displayed in the figure below, these six market drivers are projected to result in teleradiology reading service volumes increasing by 21% in 2021 and nearly doubling by 2025. Revenues for teleradiology reading service providers are forecast to follow a similar profile over this period.

Feature | Teleradiology | September 15, 2021 | By Arun Gill
The closely tied relationship between...
To get more flexibility and cost savings from storage, healthcare organizations are increasing their investments in the cloud
Feature | Information Technology | September 15, 2021 | By Kumar Goswami
Healthcare organizations today are storing petabytes of medical imaging data — lab slides,...