MIMIC-IV-ECHO: Echocardiogram Matched Subset

The MIMIC-IV-ECHO module contains structured echocardiographic measurements
and DICOM files from echocardiography exams.

Structured measurements are available from 206,488 echocardiogram studies
(including 179,928 transthoracic, 16,389 stress, and 10,171 transesophageal
echocardiograms). These are from 91,372 unique patients who are in the MIMIC-
IV Clinical Database and who had echocardiograms conducted between 2008 -
2022\. The dataset encompasses a broad range of cardiologist-recorded
echocardiographic measurements, including chamber sizes and volumes, systolic
and diastolic function, valvular morphology and function, aortic root and
great vessel dimensions, and Doppler-derived hemodynamics. Unstructured
measurements are present in the cardiologist's free-text reports, which will
be made available later under the MIMIC-IV-Note module.

The echocardiogram DICOMs contain more than 500,000 DICOMs across 7,243
studies from 4,579 distinct patients. This subset contains transthoracic
echocardiograms for patients who appear in the MIMIC-IV Clinical Database and
were admitted between 2017-2019\. A given study consists of numerous sequences
of images, with each sequence representing a particular view of the patient's
heart.

Records in MIMIC-IV-ECHO are matched to the MIMIC-IV Clinical Database, making
it possible to link to information across the MIMIC-IV modules. We have also
provided information for linking the DICOMs to the structured measurements and
notes where available.