GetPreviousCodedConcept Method (original) (raw)

Summary

Returns the Coded Concept in the same Context Group that immediately precedes the specified Coded Concept.

Syntax

- (nullable LTDicomCodedConcept *)previousCodedConcept:(LTDicomCodedConcept *)codedConcept; 

Parameters

codedConcept
DicomCodedConcept object that specifies a Coded Concept. The method returns the DicomCodedConcept that specifies the Concept that immediately precedes this Concept (in their Context Group), if there is one.

Return Value

DicomCodedConcept object that specifies the Coded Concept which immediately precedes the Concept specified by codedConcept. null, No Coded Concept precedes the one specified by codedConcept. (codedConcept is the last Coded Concept in its Context Group).

Example

using Leadtools; using Leadtools.Dicom; public void InsertContextGroup() { DicomDateTimeValue version = new DicomDateTimeValue(); version.Year = 2004; version.Month = 3; version.Day = 22; version.Hours = 0; version.Minutes = 0; version.Seconds = 0; version.Fractions = 0; version.Offset = 0; // Insert a (testing) Context Group DicomContextGroup group = DicomContextGroupTable.Instance.Insert("CID XXXX", "New Context Group", true, version, DicomContextGroupTableInsertFlags.None); if (group == null) { return; } // Fill the Context Group with some (testing) Coded Concepts DicomContextGroupTable.Instance.InsertCodedConcept(group, "CSD1", null, "CV1", "CM1", DicomDateTimeValue.Empty, null, DicomContextGroupTableInsertFlags.None); DicomContextGroupTable.Instance.InsertCodedConcept(group, "CSD2", null, "CV2", "CM2", DicomDateTimeValue.Empty, null, DicomContextGroupTableInsertFlags.None); DicomContextGroupTable.Instance.InsertCodedConcept(group, "CSD3", null, "CV3", "CM3", DicomDateTimeValue.Empty, null, DicomContextGroupTableInsertFlags.None); EnumCodedConcepts(group); // Delete the Context Group DicomContextGroupTable.Instance.Delete(group); } void DisplayCodedConcept(DicomCodedConcept concept) { DicomContextGroup group = DicomContextGroupTable.Instance.GetContextGroup(concept); StringBuilder title = new StringBuilder(); StringBuilder msg = new StringBuilder(); title.AppendFormat("Coded Concept ({0} '{1}')", group.ContextIdentifier, group.ContextIdentifierValue); msg.AppendFormat("Coding Scheme Designator: {0}{1}Coding Scheme Version: {2}{1}Code Value:{3}{1}Code Meaning: {4}", concept.CodingSchemeDesignator, Environment.NewLine, concept.CodingSchemeVersion != null ? concept.CodingSchemeVersion : "N/A", concept.CodeValue, concept.CodeMeaning); Console.WriteLine($"{title.ToString()}: {msg.ToString()}"); } void EnumCodedConcepts(DicomContextGroup group) { // Enumerate the Coded Concepts in the Context Group (3 possible ways) // One possible way to enumerate the Coded Concepts DicomCodedConcept concept = DicomContextGroupTable.Instance.GetFirstCodedConcept(group); while (concept != null) { DisplayCodedConcept(concept); concept = DicomContextGroupTable.Instance.GetNextCodedConcept(concept); } // This code is commented out on purpose, it shows two other ways of // enumerating the Coded Concepts /* // Another way to enumerate the Coded Concepts for (int i = 0; i < DicomContextGroupTable.Instance.GetCodedConceptCount(group); i++) { concept = DicomContextGroupTable.Instance.FindCodedConceptByIndex(group, i); DisplayCodedConcept(concept); } // A third way to enumerate the Coded Concepts concept = DicomContextGroupTable.Instance.GetLastCodedConcept(group); while (concept != null) { DisplayCodedConcept(concept); concept = DicomContextGroupTable.Instance.GetPreviousCodedConcept(concept); } */ } void EnumContextGroups() { DicomContextGroupTable.Instance.Reset(); // Load all the Context Groups DicomContextGroupTable.Instance.Load(null); // Enumerate them (3 possible ways) // One possible way to enumerate the Context Groups DicomContextGroup group = DicomContextGroupTable.Instance.GetFirst(); while (group != null) { StringBuilder msg = new StringBuilder(); msg.AppendFormat("{0}{2}{1}{2}{2}Enumerate Coded Concepts?", group.ContextIdentifier, group.Name, Environment.NewLine); Console.WriteLine($"Context Group: {msg}"); EnumCodedConcepts(group); group = DicomContextGroupTable.Instance.GetNext(group); } // This code is commented out on purpose, it shows two other ways of // enumerating Context Groups /* // Another way to enumerate the Context Groups for (int i = 0; i < DicomContextGroupTable.Instance.Count; i++) { group = DicomContextGroupTable.Instance.FindIndex(i); msg.AppendFormat("{0}{2}{1}{2}{2}Enumerate Coded Concepts?", group.ContextIdentifier, group.Name, Environment.NewLine); DialogResult result = MessageBox.Show(msg.ToString(), "Context Group", MessageBoxButtons.YesNoCancel); if(result == DialogResult.Yes) { EnumCodedConcepts(group); } else if (result == DialogResult.Cancel) { break; } } // A third way to enumerate the Context Groups group = DicomContextGroupTable.Instance.GetLast(); while (group != null) { msg.AppendFormat("{0}{2}{1}{2}{2}Enumerate Coded Concepts?", group.ContextIdentifier, group.Name, Environment.NewLine); DialogResult result = MessageBox.Show(msg.ToString(), "Context Group", MessageBoxButtons.YesNoCancel); if (result == DialogResult.Yes) { EnumCodedConcepts(group); } else if (result == DialogResult.Cancel) { break; } group = group = DicomContextGroupTable.Instance.GetPrev(group); } */ } void ModifyContextGroup() { DicomContextGroupTable.Instance.Reset(); DicomContextGroupTable.Instance.Load(null); DicomContextGroup group = null; DicomCodedConcept concept = null; // Look for a Context Group group = DicomContextGroupTable.Instance.Find(DicomContextIdentifierType.CID6019); if (group == null) { return; } // Look for a Coded Concept in the Context Group concept = DicomContextGroupTable.Instance.FindCodedConcept(group, "SRT", "F-01781"); if (concept == null) { return; } // Set the Code Meaning of the Coded Concept (French translation) if (DicomContextGroupTable.Instance.SetCodeMeaning(concept, "Situé à 1 heure") == false) { return; } DisplayCodedConcept(concept); // Delete the Coded Concept DicomContextGroupTable.Instance.DeleteCodedConcept(concept); // Add a (testing) Coded Concept to the Context Group concept = DicomContextGroupTable.Instance.InsertCodedConcept(group, "CSD", null, "CV", "CM", DicomDateTimeValue.Empty, null, DicomContextGroupTableInsertFlags.None); if (concept == null) { return; } DisplayCodedConcept(concept); // Restore the Context Group (discard all the changes made to the Group) DicomContextGroupTable.Instance.Default(group); EnumCodedConcepts(group); // Delete the Context Group DicomContextGroupTable.Instance.Delete(group); }