[Intl_DxMedPhys] Fwd: The New CMS Measure: Methods for Size-Adjusted Dose and Their Variabilities

[Jie Zhang]

Thanks to Dr. Wunderle! I originally posted this to the old listserver and
am now forwarding it to the new Dx list.  I am sorry if you receive it
twice.

Jie

---------- Forwarded message ---------
From: Jie Zhang <jzctjmn at gmail.com>
Date: Tue, Mar 11, 2025 at 9:15 AM
Subject: The New CMS Measure: Methods for Size-Adjusted Dose and Their
Variabilities
To: DXIMGMEDPHYS at HERMES.GWU.EDU <dximgmedphys at hermes.gwu.edu>


Dear Colleagues,

The new CMS guidance on excessive radiation measurement allows flexibility
in software selection, but this may lead to inconsistencies and undermine
its goal.

We recently evaluated five methods for estimating effective diameter and
their impact on Size-Specific Dose Estimate (SAD) in thoracic and abdominal
CT. A retrospective analysis of 719 exams revealed inconsistencies in SAD
methods, dose thresholds, and application across patient populations and
institutions. Addressing these issues is critical for accurate dose
reporting and diagnostic integrity.

Our manuscript is available on arXiv: https://urldefense.com/v3/__https://arxiv.org/abs/2503.06644__;!!KGKeukY!wkvI7i3VRXaaElI73WdyPRf_Zk6qQqZ2CCRW0BoG-aYbTN1bVG_WIFbTeFOBYzuVEpUvax1OJJGkFDM4g68KPmxld3yXDnHKjwB6aQ$ .

Our findings reinforce concerns raised by the AAPM Commissioned Panel,
recently published in *AJR*, and we hope to provide a technical perspective
on the CMS measure.

Best Regards,

Jie

*Jie Zhang, PhD, DABR (D, N), FAAPM*

Professor of Radiology and Biomedical Engineering

Chief, Division of Diagnostic & Nuclear Medical Physics

Program Director, Diagnostic Imaging Physics Residency

Department of Radiology

University of Kentucky College of Medicine

UK HealthCare

800 Rose Street, Room HX-307

Lexington, KY 40536-0293

Phone: (859) 323-2954

Email: jnzh222 at uky.edu

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