Материал: part03

Page 806​

Attribute Name​

Tag​

Type​

Description​

>Ion Beam Limiting Device​

(300A,03A4)​

3​

Sequence of beam limiting device (collimator) jaw or leaf (element) sets.​

Sequence​

One or more Items are permitted in this Sequence.​

>>RT Beam Limiting Device​

(300A,00B8)​

1​

Type of beam limiting device (collimator).​

Type​

Enumerated Values:​

X​

Y​

ASYMX​asymmetric jaw pair in IEC X direction​

ASYMY​asymmetric pair in IEC Y direction​

MLCX​multileaf (multi-element) jaw pair in IEC X direction​

MLCY​multileaf (multi-element) jaw pair in IEC Y direction​

>>Isocenter to Beam​

(300A,00BB)​

2​

Isocenter to beam limiting device (collimator) distance (in mm) of the​

Limiting Device Distance​

equipment that is to be used for beam delivery.​

See Section C.8.8.25.4 and Section C.8.8.25.10.​

>>NumberofLeaf/JawPairs​

(300A,00BC)​

1​

Number of leaf (element) or jaw pairs (equal to 1 for standard beam​

limiting device jaws).​

>>Leaf Position Boundaries​

(300A,00BE)​

1C​

Boundaries of beam limiting device (collimator) leaves (in mm) in IEC​

BEAM LIMITING DEVICE coordinate axis appropriate to RT Beam​

LimitingDeviceType(300A,00B8),i.e.,X-axisforMLCY,Y-axisforMLCX.​

Contains N+1 values, where N is the Number of Leaf/Jaw Pairs​

(300A,00BC), starting from Leaf (Element) Pair 1. Required if RT Beam​

Limiting Device Type (300A,00B8) is MLCX or MLCY. May be present​

otherwise. See Section C.8.8.25.3.​

>Referenced Patient Setup​

(300C,006A)​

3​

Uniquely identifies Patient Setup to be used for current beam, specified​

Number​

by Patient Setup Number (300A,0182) within Patient Setup Sequence​

of RT Patient Setup Module.​

>Referenced Reference​

(300C,0042)​

3​

Reference images used for validation of current beam.​

Image Sequence​

One or more Items are permitted in this Sequence.​

>>Include Table 10-11 “SOP Instance Reference Macro​

Attributes”​

>>ReferenceImageNumber​

(300A,00C8)​

1​

UniquelyidentifiesReferenceImagewithinReferencedReferenceImage​

Sequence (300C,0042).​

>Treatment Delivery Type​

(300A,00CE)​

1​

Delivery Type of treatment.​

Defined Terms:​

TREATMENT​

Normal patient treatment​

OPEN_PORTFILM​Portal image acquisition with open field (the source​

of radiation is specified by Radiation Type​

(300A,00C6))​

TRMT_PORTFILM​Portal image acquisition with treatment port (the​

source of radiation is specified by Radiation Type​

(300A,00C6))​

CONTINUATION​ Continuation of interrupted treatment​

SETUP​

No treatment beam is applied for this RT Beam. To​

be used for specifying the gantry, couch, and other​

DICOM PS3.3 2020a - Information Object Definitions​

Page 807​

Attribute Name​

Tag​

Type​

Description​

>Referenced Dose​

(300C,0080)​

3​

Sequence​

named/unnamed point doses).​

One or more Items are permitted in this Sequence.​

>>Include Table 10-11 “SOP Instance Reference Macro​

Attributes”​

(1.2.840.10008.5.1.4.1.1.481.2).​

>Number of Wedges​

(300A,00D0)​

1​

Number of wedges associated with current beam.​

>Total Wedge Tray​

(300A,00D7)​

3​

Water-EquivalentThickness​

in water (in mm).​

>Ion Wedge Sequence​

(300A,03AA)​

1C​

Sequence of treatment wedges.​

Required if Number of Wedges (300A,00D0) is non-zero.​

(300A,00D0).​

>>Wedge Number​

(300A,00D2)​

1​

>>Wedge Type​

(300A,00D3)​

2​

Type of wedge (if any) defined for Beam.​

Defined Terms:​

STANDARD​

standard (static) wedge​

MOTORIZED​

remotely.​

and is operated manually.​

>>Wedge ID​

(300A,00D4)​

3​

User-supplied identifier for Wedge.​

>>Accessory Code​

(300A,00F9)​

3​

>>Wedge Angle​

(300A,00D5)​

2​

Nominal wedge angle (degrees).​

>>Wedge Orientation​

(300A,00D8)​

2​

systems (degrees).​

Page 808​

Attribute Name​

Tag​

Type​

Description​

>>Accessory Code​

(300A,00F9)​

3​

Anaccessoryidentifiertobereadbyadevicesuchasabarcodereader.​

>>IsocentertoCompensator​

(300A,02E4)​

1C​

Isocenter to compensator tray attachment edge distance (in mm) for​

Tray Distance​

currentrangecompensator.RequiredifCompensatorMountingPosition​

(300A,02E1) is not DOUBLE_SIDED. See Section C.8.8.25.4 and​

Section C.8.8.25.10​

>>CompensatorDivergence​

(300A,02E0)​

1​

Indicates presence or absence of geometrical divergence of the range​

compensator.​

Enumerated Values:​

PRESENT​the range compensator is shaped according to the beam​

geometrical divergence.​

ABSENT​the range compensator is not shaped according to the beam​

geometrical divergence.​

>>Compensator Mounting​

(300A,02E1)​

1​

Indicates on which side of the Compensator Tray the compensator is​

Position​

mounted.​

Enumerated Values:​

PATIENT_SIDE​the Compensator is mounted on the side of the​

Compensator Tray that is towards the patient.​

SOURCE_SIDE​the Compensator is mounted on the side of the​

CompensatorTraythatistowardstheradiationsource.​

DOUBLE_SIDED​the Compensator has ashaped (i.e., non-flat) surface​

on both sides of the Compensator Tray.​

>>Compensator Rows​

(300A,00E7)​

1​

Number of rows in the range compensator. A row is defined to be in the​

X direction of the IEC Beam Limiting Device Coordinate system.​

>>Compensator Columns​

(300A,00E8)​

1​

Number of columns in the range compensator. A column is defined to​

beintheYdirectionoftheIECBeamLimitingDeviceCoordinatesystem.​

>>Compensator Pixel​

(300A,00E9)​

1​

Physical distance (in mm) between the center of each pixel projected​

Spacing​

onto machine isocentric plane. Specified by a numeric pair - adjacent​

row spacing followed by adjacent column spacing. See Section 10.7.1.3​

for further explanation of the value order.​

>>Compensator Position​

(300A,00EA)​

1​

The x and y coordinates of the upper left hand corner (first pixel​

transmitted) of the range compensator, projected onto the machine​

isocentric plane in the IEC BEAM LIMITING DEVICE coordinate system​

(mm).​

>>Compensator Column​

(300A,02E5)​

1C​

The offset distance (in mm) applied to the x coordinate of Compensator​

Offset​

Position (300A,00EA) for even numbered rows. Required if the​

compensator pattern is hexagonal.​

>>Compensator Thickness​

(300A,00EC)​

1​

Adatastreamofthepixelsamplesthatcomprisetherangecompensator,​

Data​

expressedasphysicalthickness(inmm),eitherparalleltoradiationbeam​

axis if Compensator Divergence (300A,02E0) equals ABSENT, or​

divergentaccordingtothebeamgeometricaldivergenceifCompensator​

Divergence(300A,02E0)equalsPRESENT.Theorderofpixelsencoded​

is left to right, top to bottom (upper left pixel, followed by the remainder​

of row 1, followed by the remainder of the rows).​

DICOM PS3.3 2020a - Information Object Definitions​

Page 809​

Attribute Name​

Tag​

Type​

Description​

>>IsocentertoCompensator​

(300A,02E6)​

1C​

Distances​

Section C.8.8.25.11.​

>>Compensator Relative​

(300A,02E7)​

3​

Stopping Power Ratio​

>>CompensatorMillingTool​

(300A,02E8)​

3​

Diameter​

not a projected size at isocenter.​

>Number of Boli​

(300A,00ED)​

1​

Number of boli associated with current Beam.​

>Referenced Bolus​

(300C,00B0)​

1C​

Sequence of boli associated with Beam.​

Sequence​

Required if Number of Boli (300A,00ED) is non-zero.​

(300A,00ED).​

>>Referenced ROI Number​

(3006,0084)​

1​

(300C,0060) in RT General Plan Module.​

>>Accessory Code​

(300A,00F9)​

3​

>Number of Blocks​

(300A,00F0)​

1​

Number of shielding blocks associated with Beam.​

>Total Block Tray​

(300A,00F3)​

3​

Water-EquivalentThickness​

beam axis.​

>Ion Block Sequence​

(300A,03A6)​

1C​

Sequence of blocks associated with Beam.​

Required if Number of Blocks (300A,00F0) is non-zero.​

(300A,00F0).​

>>Block Tray ID​

(300A,00F5)​

3​

User-supplied identifier for block tray.​

>>Accessory Code​

(300A,00F9)​

3​

(300A,0441) is present in another Item having this value.​

>>Isocenter to Block Tray​

(300A,00F7)​

1​

Distance​

and Section C.8.8.25.10​

>>Block Type​

(300A,00F8)​

1​

Type of block. See Section C.8.8.14.4.​

Enumerated Values:​

Page 810​

Attribute Name​

Tag​

Type​

Description​

>>Block Divergence​

(300A,00FA)​

1​

Indicates presence or otherwise of geometrical divergence.​

Enumerated Values:​

PRESENT​block edges are shaped for beam divergence​

ABSENT​block edges are not shaped for beam divergence​

>>Block Mounting Position​

(300A,00FB)​

1​

Indicates on which side of the Block Tray the block is mounted.​

Enumerated Values:​

PATIENT_SIDE​theblockismountedonthesideoftheBlockTraythat​

is towards the patient​

SOURCE_SIDE​theblockismountedonthesideoftheBlockTraythat​

is towards the radiation source​

>>Block Number​

(300A,00FC)​

1​

Identification number of the Block. The value of Block Number​

(300A,00FC) shall be unique within the Beam in which it is created.​

>>Block Name​

(300A,00FE)​

3​

User-defined name for block.​

>>Material ID​

(300A,00E1)​

2​

User-supplied identifier for material used to manufacture Block.​

>>Block Thickness​

(300A,0100)​

1​

Physical thickness of block (in mm) parallel to radiation beam axis. See​

Section C.8.8.14.4.​

>>Block Number of Points​

(300A,0104)​

1​

Number of (x,y) pairs defining the block edge.​

>>Block Data​

(300A,0106)​

1​

A data stream of (x,y) pairs that comprise the block edge. The number​

of pairs shall be equal to Block Number of Points (300A,0104), and the​

vertices shall be interpreted as a closed polygon. Coordinates are​

projected onto the machine isocentric plane in the IEC BEAM LIMITING​

DEVICE coordinate system (mm).​

See Section C.8.8.25.11.​

>>Number of Block Slab​

(300A,0440)​

3​

Number of Block Slabs comprising the Block.​

Items​

Value shall be greater than 1.​

>>Block Slab Sequence​

(300A,0441)​

1C​

Sequence of slab(s) that comprise the block.​

Required if Number of Block Slab Items (300A,0440) is present.​

ShallbepresentonlyinthefirstItemofIonBlockSequence(300A,03A6)​

if multiple Items are present where Block Type (300A,00F8) has a value​

of APERTURE.​

If this Sequence is present, Accessory Code (300A,00F9) shall not be​

present within the same Item of Ion Block Sequence (300A,03A6).​

The number of Items included in this Sequence shall equal the value of​

Number of Block Slab Items (300A,0440).​

>>>Block Slab Number​

(300A,0443)​

1​

Identification number of the Block Slab.​

The value shall start at 1, and increase monotonically by 1.​

The number indicates the order of the slabs with respect to the source,​

where number 1 corresponds to the slab nearest to the source.​

>>>Block Slab Thickness​

(300A,0442)​

3​

Physical thickness of block slab (in mm) parallel to radiation beam axis.​

The sum of the Block Slab Thickness (300A,0442) values of all Items of​

this Sequence shall be equal to the Block Thickness (300A,0100) of the​

block.​