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File extension, signature and file format must match otherwise errors will occur when the file is opened.

jpg and the first bytes in the file are ÿØÿ. A file format is determined by the file extension and signature, so JPEG images have the extension. The file format determines how the data is stored in the file. Just drag the file onto this browser window and drop it. You can also display a DICOMDIR file directly in the browser. Then click "Open with" and choose an application. If you cannot open your DICOMDIR file correctly, try to right-click or long-press the file. Without proper software you will receive a Windows message " How do you want to open this file?" or " Windows cannot open this file" or a similar Mac/iPhone/Android alert. You need a suitable software like DICOM from NEMA to open a DICOMDIR file. DicomObjects is a DICOM API / SDK Toolkit. The DicomDataSets.ReadDirectory method in DicomObjects can be used to read DICOMDIR files. A DICOM directory has a four-tier hierarchy (PATIENT –> STUDY –> SERIES –> IMAGE). The current version was developed by the DICOM Standards Committee. It was first developed by the joint efforts of the American College of Radiology (ACR) and the National Electrical Manufacturers Association (NEMA). DICOM is an international standard for storing, processing, printing, displaying, and transmitting medical images such as MRI and CT scans. DICOMDIR is a file that functions as a directory for Digital Imaging and Communications in Medicine (DICOM) file sets. DICOMDIR files mostly belong to DICOM by NEMA.