Материал: part03

C.8.11.5.1 DX Positioning Attribute Descriptions​

C.8.11.5.1.1 View Code Sequence​

View Code Sequence (0054,0220) replaces the function of View Position (0018,5101), and describes the radiographic view of the​ imagerelativetothereal-worldpatientorientationasdescribedinAnnexA“ExplanationofPatientOrientation(Normative)”inPS3.17.​

C.8.11.5.1.2 Patient Orientation Code Sequence​

This Attribute is not related to Patient Orientation (0020,0020) and conveys a different concept entirely.​

C.8.11.6 Mammography Series Module​

Table C.8-73 specifies the Attributes that identify and describe general information about a Digital Mammography Series.​

Table C.8-73. Mammography Series Module Attributes​

“BreastClinicalFindingorIndicatedProblem”.NoBaselineCIDsaredefined​ for other Attributes.​

Note​

For example, Reason for Requested Procedure Code Sequence​ (0040,100A) may be used to convey whether the images in the​ Series were taken for screening or diagnostic purposes, if the​ information cannot be found in Reason For Performed Procedure​ Code Sequence (0040,1012) in the General Study Module.​

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C.8.11.7 Mammography Image Module​

Table C.8-74 contains IOD Attributes that describe a Digital Mammography X-Ray Image including its acquisition and positioning.​

Table C.8-74. Mammography Image Module Attributes​

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Enumerated Values:​

YES​

NO​

If this Attribute is absent, then the image may or may not be a partial view.​

Note​

This may occur when a breast is larger than the active area of the​ detector.​

If this Attribute is present, its value shall be NO if there is a View Modifier​ Code Sequence (0054,0222) Item of value (399163009, SCT,​ "Magnification") or (399055006, SCT, "Spot Compression").​

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>Include Table 8.8-1 “Code Sequence Macro Attributes”​DCID 4005 “Partial View Section for Mammography”.​ Include Table 10-5 “General Anatomy Mandatory Macro​Defined CID for the Anatomic Region Sequence is CID 4013 “Anatomic​

X is parallel to the chest wall, y is positive toward the patient's nipple, and​ z is positive toward the X-Ray source.​

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C.8.11.7.1 Mammography Image Attribute Descriptions​

C.8.11.7.1.1 Mammography X-Ray Beam and X-Ray Beam Vector Definition​

Figure C.8.11.7-1 shows the X-Ray beam for a digital mammography system. The X-Ray beam vector is defined from the Focal Spot​ to the center of the chest wall line of the Image Detection device.​

Z

O

X

positive rotation

Figure C.8.11.7-1. X-Ray Beam for a Digital Mammography System​

C.8.11.7.1.2 Detector Primary and Secondary Angles​

Detector Angles are defined in a fashion similar to the positioner angles, except that the angle of the X-Ray beam vector is relative​ to the detector plane rather than the patient plane. Zero degrees is referenced to the normal of the detector plane pointing toward the​ X-Ray source. The valid range of the Detector Angles is -90 to + 90 degrees.​

The Primary Axis of rotation is defined along the line in the column direction of the detector plane that intersects the X-Ray beam​ vector. The Detector Primary Angle is defined in the plane perpendicular to the Primary Axis of rotation at the point where the X-Ray​ beam vector intersects the detector plane, with zero degrees in the direction normal to the detector plane and +90 in the direction of​ the higher numbered columns of the detector in that plane. The valid range of Detector Primary Angle is -90 to +90 degrees.​

The Secondary Axis is in the detector plane and is perpendicular to the Primary Axis at the intersection of the beam vector with the​ detectorplane(i.e.,itisalongtherowdirection).TheDetectorSecondaryAngleisdefinedintheplaneperpendiculartotheSecondary​ Axis at the point where the X-Ray beam vector intersects the detector plane, with zero degrees in the direction normal to the detector​

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