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Cancer treatment—brachytherapy dose rate, code N

Identifying and definitional attributes

Metadata item type:Help on this termData Element
Short name:Help on this termBrachytherapy dose rate
Synonymous names:Help on this termBrachytherapy modality
METeOR identifier:Help on this term468137
Registration status:Help on this termHealth, Standard 04/02/2015
Definition:Help on this termThe dose rate of brachytherapy administered during the course of treatment for cancer, as represented by a code.
Data Element Concept:Cancer treatment—brachytherapy dose rate

Value domain attributes

Representational attributes

Representation class:Help on this termCode
Data type:Help on this termNumber
Format:Help on this termN
Maximum character length:Help on this term1
Permissible values:Help on this term
ValueMeaning
1Low dose rate (LDR)
2Medium dose rate (MDR)
3High dose rate (HDR)
4Pulsed dose rate (PDR)
Supplementary values:Help on this term
7Not applicable, no brachytherapy administered
8Unknown whether brachytherapy administered
9Brachytherapy administered but dose not available/inadequately specified

Collection and usage attributes

Guide for use:Help on this term

The brachytherapy dose rate refers to the amount of radiation delivered by the source in Grays per hour (Gy/h).

CODE 1   Low dose rate (LDR)

Brachytherapy with a radiation source that emits up to 2 Gy/h.

CODE 2   Medium dose rate (MDR)

Brachytherapy with a radiation source that emits 2 Gy/h to 12 Gy/h.

CODE 3   High dose rate (HDR)

Brachytherapy with a radiation source that exceeds 12 Gy/h.

CODE 4   Pulsed dose rate (PDR)

Brachytherapy involving short pulses of radiation, which simulates an overall rate equivalent to LDR.

Source and reference attributes

Submitting organisation:Help on this termCancer Australia
Reference documents:Help on this term

Thomadsen BR et al. (2005). Brachytherapy Physics. Medical Physics Publishing.

Peinemann F, Grouven U, Hemkens LG, Bartel C, Borchers H, Pinkawa M, Heidenreich A, Sauerland S (2011). Low-dose rate brachytherapy for men with localized prostate cancer. Cochrane Database of Systematic Reviews, Issue 7. Art. No.: CD008871.

Kubo DH, Glasgow GP, Pethel TD, Thomadson BR, Williamson JF (1998). High dose-rate brachytherapy treatment delivery: Report of the AAPM Radiation Therapy Committee Task Group No. 59. Medical Physics, 25(4), 376-403.

Data element attributes

Collection and usage attributes

Guide for use:Help on this term

Record the appropriate code for the dose rate of brachytherapy administered.

Brachytherapy is delivered by placing the radiation source in close proximity to the tumour site. The radioactive isotopes are sealed in tiny pellets or “seeds” which are placed in the body using delivery devices such as needles or catheters. Types include interstitial brachytherapy, which uses a source placed within tumour tissue, for example, within a prostate tumour; and intracavitary brachytherapy, whereby the source is placed within a surgical cavity or a body cavity. Brachytherapy can involve the temporary or permanent placement of radioactive sources.

Brachytherapy is likely to be delivered to admitted patients.
Collection methods:Help on this term

The radiotherapy treatment modality will typically be found in the radiation oncologist's summary letter for the course of treatment or in the radiotherapy treatment summary in the patient's medical record.

Determining the brachytherapy type may require assistance from the radiation oncologist for consistent coding.
Comments:Help on this termTo evaluate patterns of radiotherapy care and analyse patient outcomes, it is necessary to know which treatment modalities were employed in the delivery of treatment.

Source and reference attributes

Submitting organisation:Help on this termCancer Australia
Reference documents:Help on this term

American College of Surgeons 2002. Facility Oncology Registry Data Standards (FORDS), 2009 revision. Commission on Cancer

American College of Surgeons 1998. Standards of the Commission on Cancer: Registry Operations and Data Standards (ROADS), Volume II. Commission on Cancer

Cancer Institute NSW 2006. NSW Clinical Cancer Registration: Minimum Data Set Data Dictionary, version 1.9 draft

Relational attributes

Related metadata references:Help on this term

See also Cancer treatment—brachytherapy indicator, yes/no code N Health, Standard 14/05/2015

See also Cancer treatment—radiation dose administered, total Gray N[NN.NN] Health, Standard 08/05/2014

See also Cancer treatment—radiation dose administered, total Gray N[NN.NN] Health, Superseded 08/05/2014

See also Cancer treatment—radiotherapy completion date, DDMMYYYY Health, Superseded 08/05/2014

See also Cancer treatment—radiotherapy fractions administered, total fractions N[N] Health, Standard 08/05/2014

See also Cancer treatment—radiotherapy fractions administered, total fractions N[N] Health, Superseded 08/05/2014

See also Cancer treatment—radiotherapy start date, DDMMYYYY Health, Superseded 08/05/2014

See also Cancer treatment—radiotherapy start date, DDMMYYYY Health, Standard 08/05/2014, ACT Health, Final 08/08/2018

See also Cancer treatment—radiotherapy target site, code N[N] Health, Superseded 08/05/2014

Implementation in Data Set Specifications:Help on this term
All attributes +

Adolescent and young adult cancer (clinical) DSS Health, Superseded 14/05/2015

DSS specific attributes +

Adolescent and young adult cancer (clinical) NBPDS Health, Standard 14/05/2015

DSS specific attributes +

Prostate cancer (clinical) NBPDS Health, Standard 14/05/2015

DSS specific attributes +
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