Cardiovascular imaging tests may use different methods such as echocardiography, multigated acquisition scan, cardiac angiography, and cardiac magnetic resonance (CMR) imaging. The focus of this document is on tests done using cardiac magnetic resonance imaging.
The concept map below highlights the different components or aspects that can be represented for study purposes. The study requirements define what level of detail is required for each study. The examples illustrate how to represent the data if that level of detail is needed for the study.
The examples noted below provide use cases for different tests for CMR.
The Systolic function example provides parameters related to the overall basic cardiac function. It provides tests such as ejection function, cardiac output, systolic and diastolic volumes. The laboratory test is used in this example to show how to relate laboratory data to cardiovascular tests.
The Late Gadolinium Enhancement (LGE) example includes the procedure, cardiovascular system findings, and procedure agent datasets. The purpose was to show how to represent different CMR machines, different types of tests related to LGE, and contrast administration. The tests shown provide different levels of granularity to show the end user how to represent all types of data if needed for study purposes.
The parametric mapping example provides more detail surrounding the procedure device because some of these factors may be of interest to researchers performing these types of studies. This example provides the procedure, the CMR device used, cardiovascular tests for parametric mapping, such as longitudinal relaxation time (T1 mapping), and transverse relaxation time (T2 mapping) for different locations and segments. The example demonstrates how to show imaging quality assessments and how to reflect when a CMR test is not done for cases when it is of interest to researchers to understand why there was no CMR image result. For this type of CV test, the experts noted that device parameters may impact the test results; therefore, this example was used to show how device information can be represented, if desired. The circumferential and longitudinal strain example shows different locations for the assessment with how to represent an additional analysis method of interest (such as "feature tracking").