IEC TR 61948-4:2006 PDF

Name: IEC TR 61948-4:2006 — Nuclear medicine instrumentation - Routine tests - Part 4: Radionuclide calibrators
SKU: IEC TR 61948-4:2006
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Nuclear medicine instrumentation - Routine tests - Part 4: Radionuclide calibrators

Название (английский):

IEC TR 61948-4:2006

Nuclear medicine instrumentation - Routine tests - Part 4: Radionuclide calibrators

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 11
Дата публикации:: 14 ноября 2006 г.
Издание:: IEC TR 61948 edition 1 version 1
ICS:: 11.040.50

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Описание (английский):

This technical report covers the routine testing of radionuclide calibrators used in nuclear medicine. Such devices utilise ionization chambers of the well type (directly coupled to an appropriate electronic circuitry (IEC 61145)) and a direct readout in units of ACTIVITY. Requirements and specific methods to determine performance parameters are described in IEC 61303 and IEC 61145. These methods are primarily designed for acceptance testing.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты IEC

Overview

IEC TR 61948-4:2006 is a technical report that specifies routine tests and quality-control procedures for radionuclide calibrators used in nuclear medicine. The report addresses devices that use well-type ionization chambers with a direct readout in units of activity and refers to accepted methods and requirements given in IEC 61303 and IEC 61145. Its purpose is to define simple, repeatable field tests (routine tests) to monitor instrument performance and detect deviations from reference (acceptance) data.

Key topics and requirements

Scope and device type: Applies to radionuclide calibrators employing well-type ionization chambers directly coupled to appropriate electronics and providing activity readouts.

Essential routine tests:

Background response: Measured with the sample holder in place at the most-used nuclide setting; evaluates environmental and electronic noise.
Constancy of instrument response: Performed using an ionization chamber test source (long half-life > 5 years) and compared to reference data recorded at acceptance.
System linearity: Assesses response across the activity range used; at least one data point per decade. A recommended method is the decaying-source method using a short-lived radionuclide (e.g., 99mTc) with mono-exponential fit and comparison of measured vs. expected activities.

Test frequencies (routine schedule):

Background response: Daily (each day the instrument is used).
Constancy (single nuclide setting): Daily (each day the instrument is used).
Constancy (all settings used): Weekly.
System linearity: Yearly for one radionuclide setting.
Additional checks: Per manufacturer recommendations.

Definitions: Includes key terms such as acceptance test, routine test, ionization chamber test source, radionuclide factor, system linearity, background response, and reference data.

Applications and who uses it

Medical physicists, nuclear medicine technologists, service engineers and clinical QA personnel use IEC TR 61948-4 to set up and document routine quality control for radionuclide calibrators.

The report supports daily and periodic checks to ensure accurate activity measurements for patient dosing, radiopharmacy dispensation, and diagnostic/therapeutic procedures.

Useful for establishing local QC protocols, audit evidence, and maintenance scheduling aligned with international practice.

Related standards

IEC 61303:1994 - Particular methods for describing performance of radionuclide calibrators

IEC 61145:1992 - Calibration and usage of ionization chamber systems

IEC 61948-1:2001 - Routine tests - Part 1: Radiation counting systems

IEC 60788:2004 - Glossary of defined terms

Keywords: radionuclide calibrators, nuclear medicine, routine tests, ionization chamber, constancy testing, system linearity, background response, IEC TR 61948-4:2006.

IEC TR 61948-4:2006 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and who uses it

Related standards

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