# DICOM Standard Browser

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.

## Radiation Dose Identification Label Attribute

Tag (300A,0619) Required (1) RadiationDoseIdentificationLabel 1 Long String (LO)

User-defined label for the Radiation Dose Identification.

See Section C.36.2.1.1.1.

## Section C.36.2.1.1.1

###### C.36.2.1.1.1.1 Fraction Pattern

The Radiation Fraction Pattern describes the intended scheme, i.e., how fractions are to be distributed along calendar days for the actual radiation set.

Examples of Fraction Patterns:

1. 1 fraction per day (Monday to Friday), no fractions on Saturday and Sunday, 1 week-pattern:

Number of Fraction Pattern Digits Per Day (300A,0079) = 1

Repeat Fraction Cycle Length (300A,007A) = 1

Fraction Pattern (300A,007B) = 1111100

2. 2 fractions per day (Monday to Friday), no fractions on Saturday and Sunday 1 week-pattern:

Number of Fraction Pattern Digits Per Day (300A,0079) = 2

Repeat Fraction Cycle Length (300A,007A) = 1

Fraction Pattern (300A,007B) = 11111111110000

3. 1 fraction per day (Monday, Wednesday, Friday), no fractions on Saturday and Sunday 1 week-pattern:

Number of Fraction Pattern Digits Per Day (300A,0079) = 1

Repeat Fraction Cycle Length (300A,007A) = 1

Fraction Pattern (300A,007B) = 1010100

4. 2 fractions per day (Monday, Wednesday, Friday), one fraction on Saturday morning and Sunday afternoon 1 week-pattern:

Number of Fraction Pattern Digits Per Day (300A,0079) = 2

Repeat Fraction Cycle Length (300A,007A) = 1

Fraction Pattern (300A,007B) = 11001100111001

5. 1 fraction per day every other day 2 week-pattern:

Number of Fraction Pattern Digits Per Day (300A,0079) = 1

Repeat Fraction Cycle Length (300A,007A) = 2

Fraction Pattern (300A,007B) = 10101010101010

###### C.36.2.1.1.1.2 Intended Start Day of Week

The Intended Start Day of Week (3010,0086) specifies the day(s) of the week, when the first fraction of the treatment should be delivered. If more than one day is specified, one of the days may be selected to start the treatment.

The treatment then continues as specified in Fraction Pattern (300A,007B), irrespective of when the actual delivery starts.

Examples of Intended Start Day of Week and the relation to Fraction Pattern:

1. 1 Start Day, one fraction per day

The treatment should start on Wednesday and be continued at Friday of the first week, followed by treatments at Monday, Wednesday, Friday the next week etc., until all fractions are delivered.

Number of Fraction Pattern Digits Per Day (300A,0079) = 1

Repeat Fraction Cycle Length (300A,007A) = 1

Fraction Pattern (300A,007B) = 1010100

Intended Start Day of Week (3010,0086) = 0010000

2. Start of any of 3 days, two fractions per day

Treatment should start

• on Monday morning and continued by 1 fraction on Monday afternoon, 2 fractions on Wednesday and Friday

• or on Monday afternoon and continued by 2 fractions on Wednesday and Friday

• or on Wednesday morning, followed by a fraction on Wednesday afternoon, followed by 2 fractions on Friday.

The treatment will continue the next week with 2 fractions on Monday, Wednesday, Friday etc. until all fractions are delivered.

Number of Fraction Pattern Digits Per Day (300A,0079) = 1

Repeat Fraction Cycle Length (300A,007A) = 2

Fraction Pattern (300A,007B) = 11001100110000

Intended Start Day of Week (3010,0086) = 11001000000000