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X-Ray Angiographic ImageCIOD
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PatientMModule - Patient
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RT SeriesMModule - Series
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Frame of ReferenceUModule - Frame of Reference
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RT Tolerance TablesUModule - Plan
RT Patient SetupUModule - Plan
RT Fraction SchemeUModule - Plan
RT BeamsCModule - Plan
RT Brachy Application SetupsCModule - Plan
(300A,0200) Brachy Treatment Technique1Code String
(300A,0202) Brachy Treatment Type1Code String
(300A,0206) Treatment Machine Sequence1Sequence
(300A,0210) Source Sequence1Sequence
(300A,0230) Application Setup Sequence1Sequence
(300A,0232) Application Setup Type1Code String
(300A,0234) Application Setup Number1Integer String
(300A,0236) Application Setup Name3Long String
(300A,0238) Application Setup Manufacturer3Long String
(300A,0240) Template Number3Integer String
(300A,0242) Template Type3Short String
(300A,0244) Template Name3Long String
(300A,0250) Total Reference Air Kerma1Decimal String
(300A,0260) Brachy Accessory Device Sequence3Sequence
(300A,0280) Channel Sequence1Sequence
(3006,0084) Referenced ROI Number2CInteger String
(300A,00E1) Material ID3Short String
(300A,0110) Number of Control Points1Integer String
(300A,0271) Channel Effective Length3Decimal String
(300A,0272) Channel Inner Length2CDecimal String
(300A,0273) Afterloader Channel ID3Short String
(300A,0274) Source Applicator Tip Length2CDecimal String
(300A,0282) Channel Number1Integer String
(300A,0284) Channel Length2Decimal String
(300A,0286) Channel Total Time1Decimal String
(300A,0288) Source Movement Type1Code String
(300A,028A) Number of Pulses1CInteger String
(300A,028C) Pulse Repetition Interval1CDecimal String
(300A,0290) Source Applicator Number3Integer String
(300A,0291) Source Applicator ID2CShort String
(300A,0292) Source Applicator Type1CCode String
(300A,0294) Source Applicator Name3Long String
(300A,0296) Source Applicator Length1CDecimal String
(300A,0298) Source Applicator Manufacturer3Long String
(300A,029C) Source Applicator Wall Nominal Thickness3Decimal String
(300A,029E) Source Applicator Wall Nominal Transmission3Decimal String
(300A,02A0) Source Applicator Step Size1CDecimal String
(300A,02A1) Applicator Shape Referenced ROI Number3Integer String
(300A,02A2) Transfer Tube Number2Integer String
(300A,02A4) Transfer Tube Length2CDecimal String
(300A,02B0) Channel Shield Sequence3Sequence
(300A,02C8) Final Cumulative Time Weight1CDecimal String
(300A,02D0) Brachy Control Point Sequence1Sequence
(300A,0112) Control Point Index1Integer String
(300A,02D2) Control Point Relative Position1Decimal String
(300A,02D4) Control Point 3D Position3Decimal String
(300A,02D6) Cumulative Time Weight2Decimal String
(300A,0412) Control Point Orientation3Single
(300C,0055) Brachy Referenced Dose Reference Sequence3Sequence
(300C,000E) Referenced Source Number1Integer String
(300C,0042) Referenced Reference Image Sequence3Sequence
ApprovalUModule - Plan
General ReferenceUModule - Plan
SOP CommonMModule - Plan
Common Instance ReferenceUModule - Plan
Positron Emission Tomography ImageCIOD
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Grayscale Softcopy Presentation StateCIOD
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Basic Structured DisplayCIOD
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Basic Voice Audio WaveformCIOD
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Key Object Selection DocumentCIOD
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Built with by Innolitics, a team of medical imaging software developers.

Data synced with official DICOM standard on 18 April 2024. The DICOM Standard is under continuous maintenance, and the current official version is available at http://www.dicomstandard.org/current/. DICOM Parts 3, 4, and 6, © NEMA. Please note that the most recent PDF version of the standard is the official reference, and should checked when making technical decisions.

Control Point 3D Position Attribute

Tag(300A,02D4)
TypeOptional (3)
KeywordControlPoint3DPosition
Value Multiplicity3
Value RepresentationDecimal String (DS)

Coordinates (x, y, z) of Control Point in the Patient-Based Coordinate System described in Section C.7.6.2.1.1 (mm). See Section C.8.8.15.10.

Section C.7.6.2.1.1

C.7.6.2.1.1 Image Position and Image Orientation

Image Position (Patient) (0020,0032) specifies the x, y, and z coordinates of the upper left hand corner of the image; it is the center of the first voxel transmitted. Image Orientation (Patient) (0020,0037) specifies the direction cosines of the first row and the first column with respect to the patient. These Attributes shall be provide as a pair. Row value for the x, y, and z axes respectively followed by the Column value for the x, y, and z axes respectively.

The direction of the axes is defined fully by the patient's orientation.

If Anatomical Orientation Type (0010,2210) is absent or has a value of BIPED, the x-axis is increasing to the left hand side of the patient. The y-axis is increasing to the posterior side of the patient. The z-axis is increasing toward the head of the patient.

If Anatomical Orientation Type (0010,2210) has a value of QUADRUPED, the

  • x-axis is increasing to the left (as opposed to right) side of the patient

  • the y-axis is increasing towards

    • the dorsal (as opposed to ventral) side of the patient for the neck, trunk and tail,

    • the dorsal (as opposed to ventral) side of the patient for the head,

    • the dorsal (as opposed to plantar or palmar) side of the distal limbs,

    • the cranial (as opposed caudal) side of the proximal limbs, and

  • the z-axis is increasing towards

    • the cranial (as opposed to caudal) end of the patient for the neck, trunk and tail,

    • the rostral (as opposed to caudal) end of the patient for the head, and

    • the proximal (as opposed to distal) end of the limbs

Note

  1. The axes for quadrupeds are those defined and illustrated in Smallwood et al for proper anatomic directional terms as they apply to various parts of the body.

  2. It should be anticipated that when quadrupeds are imaged on human equipment, and particularly when they are position in a manner different from the traditional human prone and supine head or feet first longitudinal position, then the equipment may well not indicate the correct orientation, though it will remain an orthogonal Cartesian right-handed system that could be corrected subsequently.

The Patient-Based Coordinate System is a right handed system, i.e., the vector cross product of a unit vector along the positive x-axis and a unit vector along the positive y-axis is equal to a unit vector along the positive z-axis.

Note

If a patient is positioned parallel to the ground, in dorsal recumbency (i.e., for humans, face-up on the table), with the caudo-cranial (i.e., for humans, feet-to-head) direction the same as the front-to-back direction of the imaging equipment, the direction of the axes of this Patient-Based Coordinate System and the Equipment-Based Coordinate System in previous versions of this Standard will coincide.

The Image Plane Attributes, in conjunction with the Pixel Spacing Attribute, describe the position and orientation of the image slices relative to the Patient-Based Coordinate System. In each image frame Image Position (Patient) (0020,0032) specifies the origin of the image with respect to the Patient-Based Coordinate System. RCS and Image Orientation (Patient) (0020,0037) values specify the orientation of the image frame rows and columns. The mapping of an integer (entire) pixel location (i,j) to the RCS is calculated as follows:

Equation C.7.6.2.1-1. 


Where:

  • Pxyz The coordinates of the voxel (i,j) in the frame's image plane in units of mm.

  • Sxyz The three values of Image Position (Patient) (0020,0032). It is the location in mm from the origin of the RCS.

  • Xxyz The values from the row (X) direction cosine of Image Orientation (Patient) (0020,0037).

  • Yxyz The values from the column (Y) direction cosine of Image Orientation (Patient) (0020,0037).

  • i Column integer index to the image plane. The first (entire) column is index zero.

  • Δi Column pixel resolution of Pixel Spacing (0028,0030) in units of mm.

  • j Row integer index to the image plane. The first (entire) row index is zero.

  • Δj Row pixel resolution of Pixel Spacing (0028,0030) in units of mm.

Note

The integer entire row and column indices (i,j) that are the input to this equation start from zero, which is a common mathematical convention. Many DICOM Attributes define such indices as starting from one, e.g., those affected by Bounding Box Annotation Units (0070,0003) for PIXEL and MATRIX in Section C.10.5 Graphic Annotation Module. This needs to be accounted for when applying this equation literally.

The mapping of a sub-pixel resolution image or total pixel matrix relative location (c,r), such as used in Spatial Coordinates Macro, to the RCS is calculated as follows

Equation C.7.6.2.1-2. 


Where:

  • Pxyz The coordinates of the voxel (c,r) in the frame's image plane in units of mm.

  • Sxyz The three values of Image Position (Patient) (0020,0032). It is the location in mm from the origin of the RCS.

  • Xxyz The values from the row (X) direction cosine of Image Orientation (Patient) (0020,0037).

  • Yxyz The values from the column (Y) direction cosine of Image Orientation (Patient) (0020,0037).

  • c Column sub-pixel resolution index to the image plane. The left pixel edge of the first column of the frame or total pixel matrix is index zero.

  • Δc Column pixel resolution of Pixel Spacing (0028,0030) in units of mm.

  • r Row sub-pixel resolution index to the image plane. The top pixel edge of the first row of the frame or total pixel matrix index is zero.

  • Δr Row pixel resolution of Pixel Spacing (0028,0030) in units of mm.

Additional constraints apply:

  1. The row and column direction cosine vectors shall be orthogonal, i.e., their dot product shall be zero.

  2. The row and column direction cosine vectors shall be normal, i.e., the dot product of each direction cosine vector with itself shall be unity.

Section C.8.8.15.10

C.8.8.15.10 Control Point 3D Position

Control Point 3D Position (300A,02D4) shall describe the absolute 3D coordinates of a source. This position shall correspond to the center of a source in an applicator during a remote or manually controlled afterloading treatment.