MRI Accreditation Program FAQ

Apply for Accreditation


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My facility plans to apply for ACR MRI Accreditation. Where do I start?
Start by reading the following documents:

After reading these documents and checking your protocols, you can apply online at

Will MRI accreditation become mandatory?
As of January 1, 2012, all outpatient facility providers that bill for CT, MRI, breast MRI, nuclear medicine and PET under part B of the Medicare physician fee schedule must be accredited in order to receive reimbursement for the technical component from Medicare.

Is my hospital required to be accredited under the new MIPPA legislation?
No. Part B of the Medicare physician fee schedule is for outpatient facilities.

Can any MRI facility apply for MRI accreditation?
Yes, any MRI facility may apply for MRI accreditation. For small, extremity-only scanners, there is a smaller phantom that your scanner can accommodate. Simply indicate on your application that your scanner is only capable of extremity scans.

How many people at my facility are involved in the accreditation process?
Everyone at your facility is involved with accreditation. Your core team should be made up of the following personnel:

Can mobile MRI practices apply for accreditation? 
Yes. Please contact the ACR for information.

Does the ACR accredit 3.0-T magnets? 
Yes. In order to accurately measure the performance of these units, two of the physics tests performed for ACR accreditation will have different pass/fail criteria for 3.0-T units. For the low-contrast object detectability (LCOD), the required number of total spokes for a 3.0-T magnet is equal to or greater than 37. For the image intensity uniformity, the required percent integral uniformity (PIU) for a 3.0-T magnet is equal to or greater than 82%.

How much does MRI accreditation cost?



(initial cycle and renewal)

$2,900 for the first unit up to four modules, $3,100 for five modules, $3,300 for six modules

$2,800 each additional unit at one site location applying for four modules, $3,000 for five modules, $3,200 for six modules


$1,300 per unit for clinical or phantom images. $2,100 per unit if repeating both.

Corrective Action Plan

$2,900 for the first unit up to four modules, $3,100 for five modules, $3,300 for six modules

$2,800 each additional unit at one site location applying for four modules, $3,000 for five modules, $3,200 for six modules

Add units (mid cycle)

$2,100 per unit

Add module (mid cycle)

$2,100 per unit

Replacement Certificate

$50 per certificate


$1,345 for large phantom

$1,045 for small phantom

Prices include shipping and handling.


How much time do I have to return the testing package to the ACR?
The testing materials are due 45 calendar days from the date the testing materials were mailed to your facility. After you apply for accreditation, you will receive all of the testing materials and labels. The due date is printed on the labels. The 45-day timeframe ensures your facility gets through the accreditation process in a timely manner.

If your facility needs extra time, please call us at 1-800-770-0145 to ask for an extension.

Are sites required to submit images within a certain timeframe?
Sites are given 45 days to complete the testing portion of the accreditation process. Images that predate the application by more than six months will not be accepted for review.

Do facilities have to undergo a site survey as part of the accreditation process? 
The accreditation process is conducted primarily by mail. The ACR and/or CMS will conduct site visits without prior notification to validate maintenance of accreditation criteria within the three-year accreditation period.

Who can purchase an ACR MRI phantom?
At this time, the phantom can be purchased by MRI facilities that apply for accreditation, MRI equipment manufacturers, and consulting physicists or MR scientists only. The phantom order form for comes with the testing materials packet when a facility applies for or renews accreditation. For your convenience, you can download the MR phantom order form. Fees are listed on the form. MRI manufacturers interested in purchasing a phantom should contact the MRI Accreditation Program at 1-800-770-0145 or e-mail to

What is the most common cause for failure?
Clinical image deficiencies or a combination of clinical and phantom image deficiencies.

What options does a site have if it fails the initial testing cycle? 
Sites have the option of appealing the results if they disagree with the findings based on the information submitted, or they may reapply for the areas indicated as deficient on the final report. Failed clinical examinations should be repeated on a different patient. For phantom images, repeat the phantom scans (we recommend doing so with the assistance and supervision of a qualified medical physicist/MR scientist).

My facility did not pass accreditation. May we appeal the decision? If so, what's involved?
Facilities that receive a deficiency or a failure may appeal the determination in writing within 15 days of the date of the final report. Send the original images for all of the submitted examinations that did not pass with a letter describing your reason for appealing. Only images from the original exam will be considered during the appeal evaluation. These will be forwarded to an arbitrator (a reviewer who did not participate in the initial review) with a copy of the previous reviews and the appeal letter written by the facility. No other images will be sent to the reviewer for consideration in the evaluation. The arbitrator's determination will be final.

We recently appealed an adverse accreditation decision. When should we receive the results of the appeal?
You should receive the appeal results within 30 to 45 days of the date all required appeal materials were received by the ACR.

We did not pass accreditation because our technologists selected and submitted the wrong images. May we appeal the decision and submit new cases? 
Although you may appeal the decision, you may not submit new cases. During accreditation review, the ACR reviewers assume that the submitted cases were reviewed by the modality's supervising physician (as specified in the Testing Instructions) and are examples of your best work. Consequently, during an appeal, you may only submit the original images with the original ACR labels.

We did not pass accreditation because our technologist did not submit all required images and provided insufficient information with the images that were submitted. May we appeal the decision and submit the rest of the required information?
You may appeal the decision; however, you may only submit the original images with the original ACR labels. If some sequences from the original exam were not included you may be able to submit those sequences. Please call the Diagnostic Modality Accreditation Information Line at 1-800-770-0145 for further guidance on your specific situation.

We are currently accredited under the “whole body” MRI accreditation. Do we have to go through the new “modular” program to remain in good standing?
You will go through the “modular” approach to MRI accreditation when your facility comes up for renewal. You are not required to go through the process before your normal renewal.

Why did the ACR change the MRI accreditation program from whole body to modular?
In 2006, the ACR Council approved a resolution requiring that the ACR MRI accreditation program be redesigned into a modular program to best meet the needs of current MR practice. This approach offers facilities a more flexible accreditation program that recognizes that facility practice patterns vary depending on the patient population served and the number of magnets utilized. Facilities will have six modules to choose from to match their accreditation to their practice on each magnet. Breast MR was specifically excluded from this modular concept because it fits better within the framework of the other breast imaging accreditation programs.

Moved Facilities/Adding Units/Adding Modules

How does a facility add a new unit to their existing accreditation?
Log on to your ACRedit home page at If you need to add another unit to the same location, click on My Modalities then click Units/Modules. Click Add New Unit under the list of units; this will add the unit to the modality ID for that location.

Note: If less than 13 months remains on the accreditation, the facility will start an early renewal. All units currently performing diagnostic testing will be included on the application. Early renewal requires full application fees and complete phantom and clinical testing for each unit. The expiration date for all units will be three years from the current expiration date. If more than 13 months remains on the accreditation, the facility has the option to submit a New Unit Addendum, or a New Unit Reinstate application.

New Unit Addendum: The facility will need to submit complete phantom and clinical testing for the new unit. The facility will pay a reduced accreditation fee. The added unit(s) will receive the same expiration date as currently approved units for this modality.

New Unit Reinstate: The facility will submit complete phantom and clinical testing for all active units. Withdrawn units may also be removed. This application requires full application fees. The expiration date will be three years from the first approval report date. 

We are getting ready to upgrade our currently accredited MR unit. How do I know whether the upgrade will require me to apply as a new unit?
The majority of software only upgrades do not require testing as a new unit. Major hardware upgrades that require the physicist to perform acceptance testing and/or establish new baselines for technologist QC require new unit accreditation testing. Major upgrades include, but are not limited to replacing the magnet or gradient coils, new gradient drivers/RF transmitter or replacing all/majority of imaging coils. Please contact the ACR for further information.

How do we add a module to our existing application?
Log in to ACRedit at, click on My Modalities and then click on Units. Then click the Add Module link associated with the unit you wish to add the module to.

We will be moving our MRI facility to a new address. Do I need to provide any information to the ACR?
Yes. Log in to ACRedit at and click on My Modalities. Click Modality Details for the site you wish to relocate, then click the Change button next to the location address. The online accreditation system will prompt you for additional information.

We are an accredited facility. Can we add a module (such as MRA or Body) before we renew our accreditation through the modular approach?
Yes. You may add a module to a unit’s accreditation by logging into ACRedit at before you renew. Your accreditation expiration date will not change.

Accreditation Testing

May we use a model or a volunteer to obtain clinical images to submit for accreditation?
No. Any clinical image submitted for accreditation review must be of an actual patient who needed the examination. Use of volunteers or models, including staff from your facility, is prohibited and may result in withholding, denial or revocation of accreditation. Attempting to pass off images taken from a volunteer or model as clinical images from a patient may constitute fraud.

Does the ACR require that a physicist or MR scientist perform testing services for a facility to apply for accreditation?
Sites applying for MRI accreditation must submit an annual MRI system performance evaluation performed by a medical physicist or MR scientist. The medical physicist/MR scientist will follow the ACR MRI Quality Control Manual in order to perform a complete annual system performance evaluation. This evaluation includes an evaluation of the weekly QC performed by a technologist. While a technologist may perform the ACR phantom portion of the accreditation submission, the ACR strongly recommends the services of a medical physicist or MR scientist for this also.

Does a physician have to be present during injection of intravascular contrast media?
A properly certified and/or licensed health care professional may perform the injection so long as a radiologist or his or her physician designee is present and immediately available to furnish assistance and direction throughout the performance of the procedure. The physician need not be in the same room.

Is the Dixon Method an acceptable method of fat suppression?
Yes. Any method that reduces fat signal uniformly is acceptable for fat suppression, inclusding the Dixon Method or Inversion Recovery.

Is it acceptable to cool the MRI Accreditation Phantom before scanning to improve SNR? 
No. It is not acceptable to cool the phantom before scanning. 

Is it required to perform the homogeneity test for the annual system performance evaluation? 
Yes, a homogeneity test of some kind is required as part of the annual system performance evaluation for all accredited magnets, and for those applying for accreditation. The ACR QC Manual describes this in the Medical Physicist’s/MR Scientist’s section. This is sometimes a difficult test to perform independently. If the techniques described in the QC Manual cannot be performed, please ask the service engineer to provide a field map or equivalent field homogeneity assessment that has been performed within the last 12 months. If the qualified medical physicist/MRI scientist has an alternate method of accurately assessing this measurement, it is acceptable, providing they include a description of their methodology. A potential alternate method that may be used with systems that do not provide access to either phase-angle images or spectroscopy is the “Bandwidth-difference” method (Chen, et al Med. Phys. 33 (11), 2006).

Should the physicist apply the ACR PIU tolerance for head coils to other volume coils?
The ACR limits for PIU apply to images submitted for accreditation of the large ACR phantom in a head coil, with uniformity correction applied (if it’s a phased array coil) and PIU measured over an area of 200 cm2. PIU measured during annual coil testing using other phantoms or without intensity correction is not required to meet those limits.

The PIU measured during annual coil testing will vary with coil design and the clinical application for which the coil is used. Results will also depend on the phantom, size of the ROI, positioning of the phantom within the coil, image orientation and whether intensity correction is applied. Uniformity correction may not be applied for annual RF coil testing, so that it doesn’t mask signal loss of malfunctioning coil elements.

If the coil manufacturer provides a uniformity limit (this is not common) the medical physicist can compare their PIU measurement to that value. In the absence of a manufacturer-supplied PIU limit the medical physicist should establish a baseline PIU value and monitor from year to year using the same phantom, phantom setup, protocol and measurement methods.

Quality Assurance/Quality Control Manual

Do sites have to perform weekly laser film quality control if the radiologists read soft copy instead of film?
Film printer QC must be performed weekly if film is used for primary interpretation. If hardcopy images are not used for primary interpretation, this test does not need to be performed. However, if the printer is used infrequently (i.e., backup printers or ones used for occasional printing for patients), this test must be performed prior to clinical use.

The long-awaited 2015 ACR Magnetic Resonance Imaging Quality Control Manual has recently been released. What has changed since the 2004 version?
In addition to the many revisions incorporated to improve the clarity of the manual, several tests and criteria are different from those in the 2004 Manual. They are outlined below:

Is it acceptable to measure SNR for daily/weekly QC instead of recording an LCD score?
Yes, SNR is an acceptable alternative to LCD scoring for daily/weekly phantom QC. However, LCD scores must be included in the Annual System Performance Evaluation. 

The ACR Large MRI Phantom Guidance document recommends that a weight of 200 lbs/100 kg be entered for the ACR phantom scans. It also mentions that sometimes 200 lbs may not work correctly. When would I enter a different phantom weight?
For some 3T scanners using a weight of 200 lbs will cause the ACR T1 series scan time to double from 2:16 to over 4 minutes. The scan time doubles in order to meet head SAR model restrictions. You could reduce the entered weight to approximately 50 lbs so that the scan time is reduced to 2:16. The image quality should not be affected. 

When do current MRI- or breast MRI-accredited facilities or new facilities applying for MRI or breast MRI accreditation have to comply with the test criteria in the new 2015 ACR MRI Quality Control Manual?
Effective approximately one year from the publication of the 2015 ACR MRI Quality Control Manual, all ACR MRI- or breast-MRI accredited facilities and those applying for accreditation must maintain a documented quality control (QC) program and must comply with the minimum frequencies of testing outlined in the manual. This date is July 1, 2016.