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ml-workgroup / covid-19-image-repository

Anonymized dataset of COVID-19 cases with a focus on radiological imaging. This includes images (x-ray / ct) with extensive metadata, such as admission-, ICU-, laboratory-, and patient master-data.
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CR vs DX #9

Closed ieee8023 closed 4 years ago

ieee8023 commented 4 years ago

For modality what is the difference here?

liob commented 4 years ago

CR stands for Computed Radiography. This means, that the image is taken using an image plate with a digital picture developing process.

DX stands for Digital Radiography. This means, that the image is taken using a fully digitized process using a photon detector.

In practice, the CR images are taken at the bedside and have a generally worse image quality than the DX images, which are made in special rooms at the institute. You can put an image plate (CR) below a patient who is lying in a bed (potentially intubated). For the DX images the patient has to be able to at least sit up by himself.