Image Wisely, a joint initiative of ACR, RSNA, ASRT and AAPM,
provides information to the medical community to promote safety in medical imaging.

Case 12: Low Dose Renal CT

CE and CME currently unavailable

Appropriate imaging of patients with renal colic can be accomplished by following published guidance and engaging the radiology care team. This case discusses how to choose and optimize imaging for patients with suspected urolithiasis or nephrolithiasis.

Authors: T. Reher, D. Gress, T. Hameed

Target Audience: Radiologists, radiologic technologists and medical physicists

This educational activity is free.

Learning Objectives
Upon completion of this case, the participant will be able to:

  1. Recognize indications for low dose renal CT.
  2. Describe methods used to reduce dose and optimize a renal CT protocol.
  3. Describe clinical decision support specific to renal CT.
  4. Identify limitations of the low dose renal CT technique.


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Disclosure of Conflicts of Interest

The ACR Disclosure Policy: In compliance with ACCME requirements and guidelines, the ACR has developed a policy for disclosure and review of potential conflicts of interest, and a method for resolution if a conflict does exist. The ACR maintains a tradition of scientific integrity and objectivity in its educational activities. In order to preserve these values and ensure its educational activities are independent and free of commercial bias, all individuals, including planners, presenters, moderators and evaluators, participating in an ACR educational activity, or an activity jointly provided by the ACR must disclose all relevant financial relationships with any commercial interest.

The following planners, managers and authors have no financial relationships to disclose:
Dustin A. Gress, MS; Wil Creech, BS; Thomas Reher, MD; Tariq Hameed, MBBS

CE Credit Information

The American College of Radiology is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians.

The American College of Radiology designates this enduring activity for a maximum of 0.5 AMA PRA Category 1 Credit(s)™. Physicians should claim only the credit commensurate with the extent of their participation in the activity.

The American College of Radiology (ACR) is approved by the American Registry of Radiologic Technologists (ARRT) as a Recognized Continuing Education Evaluation Mechanism (RCEEM) to sponsor and/or review Continuing Education programs for Radiologic Technologists and Radiation Therapists.

The American College of Radiology designates this educational activity as meeting the criteria for up to 0.5 Category A Credit hour(s) of the ARRT.

This Image Wisely Radiation Safety Case has been approved by the Commission on Accreditation of Medical Physics Education Programs, Inc. (CAMPEP) for 0.5 MPCEC continuing education credit hours.

There is no charge to participate in this educational activity. For CE credit tracking and reporting, you will be redirected to the ACR website to log in or register and add the free module to your shopping cart for $0. Step-by-step instructions on accessing the case are available here.

In order to successfully complete the activity, participants must complete an activity evaluation and claim credit commensurate with their participation in the activity.

For information about the accreditation of this program, please contact the ACR at

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