| LEADTOOLS DICOM C DLL Help > Features of LEADTOOLS DICOM > DICOM Files > Context Groups > Context Identifier Values | 
LEADTOOLS maintains an internal table of the Context Groups defined by the DICOM Content Mapping Resource (DCMR). The following is a list of the Context Identifiers (CIDs) of these Context Groups, along with their names.
| Value | Context ID | Name | 
| CID_2 | "CID 2" | "Anatomic Modifier" | 
| CID_4 | "CID 4" | "Anatomic Region" | 
| CID_5 | "CID 5" | "Transducer Approach" | 
| CID_6 | "CID 6" | "Transducer Orientation" | 
| CID_7 | "CID 7" | "Ultrasound Beam Path" | 
| CID_8 | "CID 8" | "Angiographic Interventional Devices" | 
| CID_9 | "CID 9" | "Image Guided Therapeutic Procedures" | 
| CID_10 | "CID 10" | "Interventional Drug" | 
| CID_11 | "CID 11" | "Route of Administration" | 
| CID_12 | "CID 12" | "Radiographic Contrast Agent" | 
| CID_18 | "CID 18" | "Isotopes in Radiopharmaceuticals" | 
| CID_19 | "CID 19" | "Patient Orientation" | 
| CID_20 | "CID 20" | "Patient Orientation Modifier" | 
| CID_21 | "CID 21" | "Patient Gantry Relationship" | 
| CID_23 | "CID 23" | "Cranio-caudad Angulation" | 
| CID_25 | "CID 25" | "Radiopharmaceuticals" | 
| CID_26 | "CID 26" | "Nuclear Medicine Projections" | 
| CID_29 | "CID 29" | "Acquisition Modality" | 
| CID_30 | "CID 30" | "DICOM Devices" | 
| CID_42 | "CID 42" | "Numeric Value Qualifier" | 
| CID_82 | "CID 82" | "Units of Measurement" | 
| CID_244 | "CID 244" | "Laterality" | 
| CID_3001 | "CID 3001" | "ECG Leads" | 
| CID_3003 | "CID 3003" | "Hemodynamic Waveform Sources" | 
| CID_3010 | "CID 3010" | "Cardiovascular Anatomic Locations" | 
| CID_3011 | "CID 3011" | "Electrophysiology Anatomic Locations" | 
| CID_3014 | "CID 3014" | "Coronary Artery Segments" | 
| CID_3015 | "CID 3015" | "Coronary Arteries" | 
| CID_3019 | "CID 3019" | "Cardiovascular Anatomic Location Modifiers" | 
| CID_3082 | "CID 3082" | "Cardiology Units of Measurement" | 
| CID_3090 | "CID 3090" | "Time Synchronization Channel Types" | 
| CID_3101 | "CID 3101" | "NM Procedural State Values" | 
| CID_3240 | "CID 3240" | "Electrophysiology Measurement Functions and Techniques" | 
| CID_3241 | "CID 3241" | "Hemodynamic Measurement Techniques" | 
| CID_3250 | "CID 3250" | "Catheterization Procedure Phase" | 
| CID_3254 | "CID 3254" | "Electrophysiology Procedure Phase" | 
| CID_3261 | "CID 3261" | "Stress Protocols" | 
| CID_3262 | "CID 3262" | "ECG Patient State Values" | 
| CID_3263 | "CID 3263" | "Electrode Placement Values" | 
| CID_3264 | "CID 3264" | "XYZ Electrode Placement Values" | 
| CID_3271 | "CID 3271" | "Hemodynamic Physiological Challenges" | 
| CID_3335 | "CID 3335" | "ECG Annotations" | 
| CID_3337 | "CID 3337" | "Hemodynamic Annotations" | 
| CID_3339 | "CID 3339" | "Electrophysiology Annotations" | 
| CID_4009 | "CID 4009" | "DX Anatomy Images" | 
| CID_4010 | "CID 4010" | "DX View" | 
| CID_4011 | "CID 4011" | "DX View Modifier" | 
| CID_4012 | "CID 4012" | "Projection Eponymous Name" | 
| CID_4013 | "CID 4013" | "Anatomic Region for Mammography" | 
| CID_4014 | "CID 4014" | "View for Mammography" | 
| CID_4015 | "CID 4015" | "View Modifier for Mammography" | 
| CID_4016 | "CID 4016" | "Anatomic Region for Intra-oral Radiography" | 
| CID_4017 | "CID 4017" | "Anatomic Region Modifier for Intra-oral Radiography" | 
| CID_4018 | "CID 4018" | "Primary Anatomic Structure for Intra-oral Radiography (Permanent Dentition - Designation of Teeth)" | 
| CID_4019 | "CID 4019" | "Primary Anatomic Structure for Intra-oral Radiography (Deciduous Dentition - Designation of Teeth)" | 
| CID_4020 | "CID 4020" | "PET Radionuclide" | 
| CID_4021 | "CID 4021" | "PET Radiopharmaceutical" | 
| CID_4030 | "CID 4030" | "MR Spectroscopy Metabolites" | 
| CID_4031 | "CID 4031" | "MR Proton Spectroscopy Metabolites" | 
| CID_4200 | "CID 4200" | "Ophthalmic Imaging Agent" | 
| CID_4201 | "CID 4201" | "Patient Eye Movement Command" | 
| CID_4202 | "CID 4202" | "Ophthalmic Photography Acquisition Device" | 
| CID_4203 | "CID 4203" | "Ophthalmic Photography Illumination" | 
| CID_4204 | "CID 4204" | "Ophthalmic Filter" | 
| CID_4205 | "CID 4205" | "Ophthalmic Lens" | 
| CID_4206 | "CID 4206" | "Ophthalmic Channel Description" | 
| CID_4207 | "CID 4207" | "Ophthalmic Image Position" | 
| CID_4208 | "CID 4208" | "Mydriatic Agent" | 
| CID_4209 | "CID 4209" | "Ophthalmic Anatomic Structure Imaged" | 
| CID_5000 | "CID 5000" | "Languages" | 
| CID_5001 | "CID 5001" | "Countries" | 
| CID_6000 | "CID 6000" | "Overall Breast Composition" | 
| CID_6001 | "CID 6001" | "Overall Breast Composition from BI-RADS©" | 
| CID_6002 | "CID 6002" | "Change Since Last Mammogram or Prior Surgery" | 
| CID_6003 | "CID 6003" | "Change Since Last Mammogram or Prior Surgery from BI-RADS©" | 
| CID_6004 | "CID 6004" | "Mammography Characteristics of Shape" | 
| CID_6005 | "CID 6005" | "Characteristics of Shape from BI-RADS©" | 
| CID_6006 | "CID 6006" | "Mammography Characteristics of Margin" | 
| CID_6007 | "CID 6007" | "Characteristics of Margin from BI-RADS©" | 
| CID_6008 | "CID 6008" | "Density Modifier" | 
| CID_6009 | "CID 6009" | "Density Modifier from BI-RADS©" | 
| CID_6010 | "CID 6010" | "Mammography Calcification Types" | 
| CID_6011 | "CID 6011" | "Calcification Types from BI-RADS©" | 
| CID_6012 | "CID 6012" | "Calcification Distribution Modifier" | 
| CID_6013 | "CID 6013" | "Calcification Distribution Modifier from BI-RADS©" | 
| CID_6014 | "CID 6014" | "Mammography Single Image Finding" | 
| CID_6015 | "CID 6015" | "Single Image Finding from BI-RADS©" | 
| CID_6016 | "CID 6016" | "Mammography Composite Feature" | 
| CID_6017 | "CID 6017" | "Composite Feature from BI-RADS©" | 
| CID_6018 | "CID 6018" | "Clockface Location or Region" | 
| CID_6019 | "CID 6019" | "Clockface Location or Region from BI-RADS©" | 
| CID_6020 | "CID 6020" | "Quadrant Location" | 
| CID_6021 | "CID 6021" | "Quadrant Location from BI-RADS©" | 
| CID_6022 | "CID 6022" | "Side" | 
| CID_6023 | "CID 6023" | "Side from BI-RADS©" | 
| CID_6024 | "CID 6024" | "Depth" | 
| CID_6025 | "CID 6025" | "Depth from BI-RADS©" | 
| CID_6026 | "CID 6026" | "Mammography Assessment" | 
| CID_6027 | "CID 6027" | "Assessment from BI-RADS©" | 
| CID_6028 | "CID 6028" | "Mammography Recommended Follow-up" | 
| CID_6029 | "CID 6029" | "Recommended Follow-up from BI-RADS©" | 
| CID_6030 | "CID 6030" | "Mammography Pathology Codes" | 
| CID_6031 | "CID 6031" | "Benign Pathology Codes from BI-RADS©" | 
| CID_6032 | "CID 6032" | "High Risk Lesions Pathology Codes from BI-RADS©" | 
| CID_6033 | "CID 6033" | "Malignant Pathology Codes from BI-RADS©" | 
| CID_6034 | "CID 6034" | "Intended Use of CAD Output" | 
| CID_6035 | "CID 6035" | "Composite Feature Relations" | 
| CID_6036 | "CID 6036" | "Scope of Feature" | 
| CID_6037 | "CID 6037" | "Mammography Quantitative Temporal Difference Type" | 
| CID_6038 | "CID 6038" | "Mammography Qualitative Temporal Difference Type" | 
| CID_6039 | "CID 6039" | "Nipple Characteristic" | 
| CID_6040 | "CID 6040" | "Non-Lesion Object Type" | 
| CID_6041 | "CID 6041" | "Mammography Image Quality Finding" | 
| CID_6042 | "CID 6042" | "Status of Results" | 
| CID_6043 | "CID 6043" | "Types of Mammography CAD Analysis" | 
| CID_6044 | "CID 6044" | "Types of Image Quality Assessment" | 
| CID_6045 | "CID 6045" | "Mammography Types of Quality Control Standard" | 
| CID_6046 | "CID 6046" | "Units of Follow-up Interval" | 
| CID_6047 | "CID 6047" | "CAD Processing and Findings Summary" | 
| CID_6100 | "CID 6100" | "Chest Component Categories" | 
| CID_6101 | "CID 6101" | "Chest Finding or Feature" | 
| CID_6102 | "CID 6102" | "Chest Finding or Feature Modifier" | 
| CID_6103 | "CID 6103" | "Abnormal Lines Finding or Feature" | 
| CID_6104 | "CID 6104" | "Abnormal Opacity Finding or Feature" | 
| CID_6105 | "CID 6105" | "Abnormal Lucency Finding or Feature" | 
| CID_6106 | "CID 6106" | "Abnormal Texture Finding or Feature" | 
| CID_6107 | "CID 6107" | "Width Descriptor" | 
| CID_6108 | "CID 6108" | "Chest Anatomic Structure Abnormal Distribution" | 
| CID_6109 | "CID 6109" | "Radiographic Anatomy Finding or Feature" | 
| CID_6110 | "CID 6110" | "Lung Anatomy Finding or Feature" | 
| CID_6111 | "CID 6111" | "Bronchovascular Anatomy Finding or Feature" | 
| CID_6112 | "CID 6112" | "Pleura Anatomy Finding or Feature" | 
| CID_6113 | "CID 6113" | "Mediastinum Anatomy Finding or Feature" | 
| CID_6114 | "CID 6114" | "Osseous Anatomy Finding or Feature" | 
| CID_6115 | "CID 6115" | "Osseous Anatomy Modifiers" | 
| CID_6116 | "CID 6116" | "Muscular Anatomy" | 
| CID_6117 | "CID 6117" | "Vascular Anatomy" | 
| CID_6118 | "CID 6118" | "Size Descriptor" | 
| CID_6119 | "CID 6119" | "Chest Border Shape" | 
| CID_6120 | "CID 6120" | "Chest Border Definition" | 
| CID_6121 | "CID 6121" | "Chest Orientation Descriptor" | 
| CID_6122 | "CID 6122" | "Chest Content Descriptor" | 
| CID_6123 | "CID 6123" | "Chest Opacity Descriptor" | 
| CID_6124 | "CID 6124" | "Location in Chest" | 
| CID_6125 | "CID 6125" | "General Chest Location" | 
| CID_6126 | "CID 6126" | "Location in Lung" | 
| CID_6127 | "CID 6127" | "Segment Location in Lung" | 
| CID_6128 | "CID 6128" | "Chest Distribution Descriptor" | 
| CID_6129 | "CID 6129" | "Chest Site Involvement" | 
| CID_6130 | "CID 6130" | "Severity Descriptor" | 
| CID_6131 | "CID 6131" | "Chest Texture Descriptor" | 
| CID_6132 | "CID 6132" | "Chest Calcification Descriptor" | 
| CID_6133 | "CID 6133" | "Chest Quantitative Temporal Difference Type" | 
| CID_6134 | "CID 6134" | "Chest Qualitative Temporal Difference Type" | 
| CID_6135 | "CID 6135" | "Chest Image Quality Finding" | 
| CID_6136 | "CID 6136" | "Chest Types of Quality Control Standard" | 
| CID_6137 | "CID 6137" | "Types of Chest CAD Analysis" | 
| CID_6138 | "CID 6138" | "Chest Non-Lesion Object Type" | 
| CID_6139 | "CID 6139" | "Non-Lesion Modifiers" | 
| CID_6140 | "CID 6140" | "Calculation Methods" | 
| CID_6141 | "CID 6141" | "Attenuation Coefficient Measurements" | 
| CID_6142 | "CID 6142" | "Calculated Value" | 
| CID_6143 | "CID 6143" | "Response Criteria" | 
| CID_6144 | "CID 6144" | "RECIST Response Criteria" | 
| CID_6145 | "CID 6145" | "Baseline Category" | 
| CID_7000 | "CID 7000" | "Diagnostic Imaging Report Document Titles" | 
| CID_7001 | "CID 7001" | "Diagnostic Imaging Report Headings" | 
| CID_7002 | "CID 7002" | "Diagnostic Imaging Report Elements" | 
| CID_7003 | "CID 7003" | "Diagnostic Imaging Report Purposes of Reference" | 
| CID_7004 | "CID 7004" | "Waveform Purposes of Reference" | 
| CID_7005 | "CID 7005" | "Contributing Equipment Purposes of Reference" | 
| CID_7010 | "CID 7010" | "Key Object Selection Document Title" | 
| CID_7011 | "CID 7011" | "Rejected for Quality Reasons" | 
| CID_7012 | "CID 7012" | "Best In Set" | 
| CID_7201 | "CID 7201" | "Referenced Image Purposes of Reference" | 
| CID_7202 | "CID 7202" | "Source Image Purposes of Reference" | 
| CID_7203 | "CID 7203" | "Image Derivation" | 
| CID_7210 | "CID 7210" | "Related Series Purposes Of Reference" | 
| CID_7452 | "CID 7452" | "Organizational Roles" | 
| CID_7453 | "CID 7453" | "Performing Roles" | 
| CID_7454 | "CID 7454" | "Species" | 
| CID_7455 | "CID 7455" | "Sex" | 
| CID_7456 | "CID 7456" | "Units of Measure for Age" | 
| CID_7460 | "CID 7460" | "Units of Linear Measurement" | 
| CID_7461 | "CID 7461" | "Units of Area Measurement" | 
| CID_7462 | "CID 7462" | "Units of Volume Measurement" | 
| CID_7470 | "CID 7470" | "Linear Measurements" | 
| CID_7471 | "CID 7471" | "Area Measurements" | 
| CID_7472 | "CID 7472" | "Volume Measurements" | 
| CID_9231 | "CID 9231" | "General Purpose Workitem Definition" | 
| CID_9232 | "CID 9232" | "Non-DICOM Output Types" | 
| CID_9300 | "CID 9300" | "Procedure Discontinuation Reasons" | 
| CID_12001 | "CID 12001" | "Ultrasound Protocol Types" | 
| CID_12002 | "CID 12002" | "Ultrasound Protocol Stage Types" | 
| CID_12140 | "CID 12140" | "Pelvic Vasculature Anatomical Location" | 
| CID_12141 | "CID 12141" | "Fetal Vasculature Anatomical Location" |