| Class | Description |
| CodeSequence | Encode concepts using code values and optional text meanings from coding schemes. |
| CodingSchemeIdentification | Contains properties that map values of Coding Scheme Designator to an external coding system. |
| ContentItem | Provides a flexible means of encoding attribute identifiers and attribute values using the DICOM Code Sequence Macro. |
| ContributingEquipment | Contains properties the describe related equipment which has contributed to acquisition, creation or modification of a composite instance. |
| DateRange | Represents a date range. |
| DigitalSignature | Holds information about a digital signature that is to be included in a DICOM dataset. |
| DigitalSignatures | Hold information about digital signatures to be included in a dataset. |
| ElementTag | Defines a DICOM tag along with is value. |
| EncryptedAttribute | Holds information about encrypted content in a DICOM dataset. |
| EnhancedEncoding | Defines additional code sequence coding information. |
| HL7StructuredDocumentReference | Defines a mapping between HL7 instances identifiers of unencapsulated HL7 structured documents referenced from a DICOM instance. |
| MACParameters | Provides properties that describe the parameters used to calculate a MAC for use in digital signatures. |
| ModalityDescriptor | Manages descriptions for DICOM modalities. |
| NotifyPropertyChanged | Base class form implementing property change notification. |
| OrientationConditionBase | An abstract class that is used to test whether a condition is met by a DicomDataSet |
| OrientationConfiguration | Provides three lists of conditions (one for each 3D axis) that can be applied to the image contained in a DicomDataSet if a specified condition is met. |
| OriginalAttribute | Contains information on an attribute that was removed or replaced by other values in the DICOM dataset. |
| PerformedSeries | Class that defines an item in a performed series sequence. |
| PersonIdentification | Class that defines an item in a person identification sequence. |
| PersonName | Represents the component parts of a DICOM Person Name. |
| PlaneOrientation | Provides a condition, and a transformation to a 2D image that is to be applied if a specified condition is met. |
| RequestAttributes | Contains properties from the Imaging Service Request. |
| SCFailedSOPInstanceReference | Holds information about a failed Storage commitment SOP instance reference. |
| ScheduledProcedureStep | Class that defines an item in a scheduled procedure step sequence. |
| SCSOPInstanceReference | Holds information about a Storage commitment SOP instance reference. |
| SOPCommonModule | Specifies the properties which are required for a proper functioning and identification of the associated SOP Instances. |
| SopInstance | Class that defines SOP instance information. |
| SopInstanceReference | Class that defines SOP instance reference information. |
| StorageCommitment | Class that defines information needed for a Storage Commitment request. |
| StorageCommitmentResult | Holds information for a storage commitment result. |
| StorageMediaFileSet | Represents information about the volume the DICOM media is written to. |
| TagValueOrientationCondition | Specifies a possible condition that may or may not be met by a DicomDataSet. The condition consists of a DICOM tag and value for the DICOM element containing that tag. |
| TimeRange | Represents a time range. |