Fighting COVID-19 together.

Learn how lung ultrasound can make a difference.
Contact us

The latest news.

Updated April 24
New COVID-19 images
See new lung scans from confirmed COVID-19 patients
View now
Butterfly Education
New Educational View Guidance tools to enhance your lung scanning techniques
Learn more
From the Front Lines
Hear from clinicians around the world at the front lines of the COVID-19 pandemic.
View now
Probe Sheaths
Review the list of probe sheaths that will cover your iQ and mobile device
Learn more
Shared Best Practices
A series of global protocols, guidelines and quick guides to fight COVID-19
Learn more
Free COVID-19 lung ultrasound course
View Video


Butterfly is hosting a series of sessions for doctors and other health care professionals to learn more about the use of POCUS.

View now
Lessons from the Front Lines:
A Global Perspective
Dr. John Martin
United States
Dr. Jonny Wilkinson
United Kingdom
Dr. Penelope Lema
United States
Dr. Cian McDermott
Dr. Adam Thomas
Dr. Katarzyna (Kasia) Hampton
Dr. Emanuele Pivetta

COVID-19 resources.

COVID-19 gallery

Compare images between a normal lung and those from suspected or confirmed COVID-19 cases.

Learn more


Review publications written about lung ultrasound for COVID-19 patients.

Review now

Shared best practices

A series of global protocols, guidelines and quick guides submitted by practitioners on the COVID-19 front lines.

Learn more


Learn how to use the Butterfly iQ to perform lung ultrasound using our library of educational videos.

See videos

Cleaning and disinfectants

Review the list of cleaners and disinfectants for your iQ along with a short video demonstrating how to cover your iQ and phone.

See the list

Role of POCUS

Learn how lung ultrasound plays a valuable role for COVID-19 patient management in multiple specialties.

Learn more

Butterfly Live

Butterfly is hosting a series of webinars for doctors and other health care professionals to learn more about the use of POCUS.

View now

From the Front Lines

Hear from clinicians around the world at the front lines of the COVID-19 pandemic.

View now

Frequently asked questions.

These answers are provided by clinical experts, but should not be interpreted as comprehensive. Patients should always be assessed with their full clinical history in mind and are at the discretion of the individual physician.

Can lung ultrasound be used to diagnose COVID-19?

Lung ultrasound is used to identify pulmonary complications in suspected and/or confirmed COVID-19 patients and helps risk stratify those for admission and closer observation. It is not diagnostic of COVID-19.  The definitive diagnosis is made by real-time RT-polymerase chain reaction (rRT-PCR) detection of the SARS-CoV-2 virus (the virus that causes COVID-19) in respiratory specimens.

Why would I use lung ultrasound in a patient with suspected COVID-19?

Lung ultrasound is a portable, bedside, radiation-free, inexpensive imaging modality that can readily detect many features of COVID-19 associated lung disease. The cost, portability, accuracy and ability to use in an isolated environment lead to significant potential benefit over chest radiography or computed tomography (CT) imaging. Imaging findings can accelerate disposition decisions while awaiting culture results.

Why would I use lung ultrasound in a patient with confirmed COVID-19?

Clinicians are using lung ultrasound to assess and monitor COVID-19 patients with hypoxemia and to assess high risk infected patients to stratify disposition decisions. Lung ultrasound findings can change dynamically through the course of an illness, and monitoring for progression of B-lines and/or consolidation (or for resolution with return of a normal A-line pattern) could provide valuable information to the treatment team. While CT has confirmed value in the evaluation of COVID-19, many patients are too ill to transport or can extend the exposure risk to more health care providers. CT is also more expensive and studies suggest ultrasound may be equally as informative.

What are some of the lung ultrasound features of COVID-19?

The following ultrasound features have been described in patients with COVID-19 infection:
· A fragmented, irregular pleural line
· B-lines (focal, scattered and/or confluent)
· Bilateral involvement
· Posterior and lateral segment involvement
· Lung consolidation (ranging from small to lobar, with or without air bronchograms)
· Rare pleural effusions
· See this study and this study for further details

How can lung ultrasound be used in the triage of suspected cases, specifically in the presence of symptoms (fever, cough, fatigue, dyspnea), known COVID-19 contact or return from high risk area?

Dr. Mike Stone, emergency room physician and Director of Education at Butterfly Network, has put together a proposed protocol based on expert input. Please note that this protocol is not validated by prospective trials.  Other clinicians have also shared their protocols with us. View them here:

How could I use ultrasound to monitor a patient with confirmed COVID-19?

Serial examinations with lung POCUS can reveal worsening B-lines and/or consolidations, indicating progression of disease. Additionally, return of a normal A-line pattern may indicate signs of recovery. Multiple approaches have been described (6-,8-,12-, 14+ zone protocols) for lung evaluation with POCUS. You may also consider imaging the heart as a baseline measure of ejection fraction. This may be specifically relevant to intensivists caring for severely ill patients with COVID-19.

Do the probe and phone still work when contained within a sheath? If so do you have recommendations as to which sheath should we use?

Many users have reported positive results placing both iQ and mobile device in a standard probe sheath. CIVCO has created a unique landing page for sheaths that will work with the iQ. You may also use standard sheaths available from ProTek, Medline, Sheathes and other retailers. For more details, view our COVID-19 cleaning and disinfection page.

I want to help! What can I do?

We are actively seeking to connect with the medical community, and add to the data available for research, teaching and understanding of COVID-19. Qualified professionals are encouraged to contribute to our library of de-identified positive cases, as well as share care delivery protocols. Contact us at for more details.

I want to contribute images! How can I do that?

The images and clips in our COVID-19 gallery originate from clinicians across the world and have been useful to accelerate learning and collaboration throughout our community. Please reach out to us via email at, and we will be happy to provide further instructions. We appreciate your contributions to this evolving resource center.

Stay connected.

Get involved.

We are working behind the scenes to help support front-line clinicians on managing patients with confirmed or suspected COVID-19. Join our community that is working together to share de-identified images of positive cases, care delivery protocols and other creative ideas to manage this public health pandemic.

Contact us