AAPM Position Statements, Policies and Procedures

Policy number

Policy name

Policy date

Sunset date

AP 146-A

Joint AAPM/IROC Houston Registry of Reference-Class Ionization Chambers

7/25/2025

12/31/2030

Section

Policy source

Policy text

The full, approved policy (including Purpose and Rationale, Appearance and Contents, and Procedures for Inclusion, with figures and appendices) is available here:

H. Associated Documents

Name	Acronym	Appendix	File Format	Description	Revision	Link
AAPM WGICR Policy Document	AP	NA	PDF	Describes the process	7	[Download]
Reference Chamber Specifications	RCS	1	PDF	Requirements for a chamber to be included in the ICR	8	[Download]
Initial Submission Form	ISF	2	Word	Initiates the ICR process; includes manufacturer contact info and chamber details	5	[Download]
Maintenance of Registry Status Form	MRS	3	Word	For manufacturers to report changes to manufacturing or chamber design	5	[Download]
Warning Letter to Manufacturers (Template)	WL	4	Word	Warns manufacturers that a chamber may be removed from the ICR	4	[Download]
Test Data Submission Template	TDS	5	Excel	For manufacturers to submit chamber data	4	[Download]
Review Form Template	TRF	6	Excel	Used by reviewers during evaluation	4	[Download]
Confidentiality Form	CF	7	Word	Signed by reviewers to ensure confidentiality of data	4	[Download]
Generic MC Models	GMM	8	PDF	Describes models to demonstrate accuracy of calculated kQ factors	4	[Download]

Policy number	Policy name	Policy date	Sunset date	Active?
Policy version history
AP 146-A	Joint AAPM/IROC Houston Registry of Reference-Class Ionization Chambers	7/25/2025	12/31/2030	Active

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