1.2 Eligibility, Structured Education, and Clinical Experience
Key Takeaways
- Bone Densitometry requires a supporting category credential in Radiography, Nuclear Medicine Technology, Radiation Therapy, Sonography, or Vascular Sonography before a candidate may apply.
- Structured education totals 16 hours earned within the 24 months immediately before application, with at least one credit in each of Patient Care, Image Production, and Procedures.
- Clinical experience requires 125 mandatory procedures: 25 daily quality control procedures, 50 lumbar spine scans, and 50 femur scans, all performed on humans rather than phantoms.
- Candidates must also complete at least three elective activities, such as 10 forearm DXA scans, 5 VFA scans, or one in vivo precision study.
- The ARRT postprimary application fee is $225, rising to $450 when a candidate uses an NMTCB credential as the supporting category.
1.2 Eligibility, Structured Education, and Clinical Experience
Quick Answer: To sit for ARRT Bone Densitometry you must already hold a qualifying supporting credential, satisfy ARRT's ethics requirement, document 16 hours of structured education earned within the previous 24 months, and document 125 mandatory clinical procedures plus three elective activities. The postprimary application fee is $225 ($450 when using an NMTCB supporting credential). You have three attempts within three years of your first exam window opening.
The Supporting Category Requirement
The postprimary eligibility pathway exists because bone densitometry builds on skills already certified elsewhere. ARRT accepts the following supporting categories for BD:
| Supporting discipline | Accepted from |
|---|---|
| Radiography | ARRT |
| Nuclear Medicine Technology | ARRT or the Nuclear Medicine Technology Certification Board (NMTCB) |
| Radiation Therapy | ARRT |
| Sonography | ARRT or the American Registry for Diagnostic Medical Sonography (ARDMS) |
| Vascular Sonography | ARRT |
The supporting credential must be current and in good standing at the time of application. Candidates who hold NMTCB nuclear medicine certification but no ARRT credential may still pursue BD; ARRT charges a higher application fee in that case because it must validate a credential issued by another organization.
The Ethics Requirement
Every ARRT candidate must satisfy the ethics requirement described in the ARRT Rules and Regulations and Standards of Ethics. In practice this means disclosing misdemeanor and felony convictions, military court-martials, and disciplinary actions taken by a state licensing board or another certification organization. Candidates who are unsure whether a past event will affect eligibility may submit an Ethics Review Preapplication before spending money on the application — ARRT will render a determination in advance rather than after you have paid.
If ARRT authorizes you to test and later receives information suggesting ineligibility, you may still sit for the exam, but your scores will be held pending review and may be cancelled.
Structured Education: 16 Hours
ARRT requires documentation of at least 16 hours of structured education, earned within the 24-month period immediately before you submit your application. Acceptable activities are academic courses from an institution accredited through a mechanism ARRT recognizes, continuing education approved by a RCEEM or RCEEM+, or a combination of the two.
The distribution rule is specific and frequently missed:
At least one CE credit (or equivalent) must come from each content category: Patient Care, Image Production, and Procedures. The remaining hours may come from any combination.
ARRT's own published examples make the flexibility clear: 3 + 6 + 7, or 1 + 1 + 14, or 1 + 10 + 5 all total 16 and all satisfy the minimum-one-per-category rule. What fails is 0 + 8 + 8 — sixteen hours, but a category left empty.
Academic coursework converts at 12 CE credits per academic quarter credit or 16 CE credits per academic semester credit.
Clinical Experience: 125 Mandatory Procedures
The clinical experience requirements document performance of a representative subset of bone densitometry procedures. Candidates must document a minimum of 125 mandatory procedures:
| Mandatory procedure | Required count |
|---|---|
| Daily quality control procedures (perform and interpret, per manufacturer guidelines) | 25 |
| Lumbar spine DXA patient scans | 50 |
| Femur DXA patient scans | 50 |
| Total mandatory | 125 |
Several counting rules govern the log and are worth memorizing because they mirror how the exam frames clinical judgment:
- Scans must be performed on humans. Phantom scans and simulated-tissue scans do not count toward the 50/50 patient scan requirements — though phantom work is what the 25 QC procedures are about.
- Dual proximal femur scans count as one site, not two.
- Scanning the same site twice on one patient on one day counts once. If a patient is scanned at two or more different anatomical sites, each site counts separately.
- A maximum of 15 mandatory and elective procedures may be logged per day.
- Mandatory and elective procedures cannot be counted on the same patient on the same day.
- Remote scanning is not acceptable. The candidate must be physically present at the facility where the patient and equipment are located.
Every logged DXA examination must incorporate the full clinical sequence: explaining the procedure and obtaining relevant history including pregnancy screening, confirming removal of artifact-producing objects, verifying the patient has not received contrast or radiopharmaceuticals that would invalidate the scan, entering the patient data required to apply reference data, selecting positioning aids and positioning the patient, recording unusual positioning details, verifying regions of interest, evaluating measurement quality for artifacts and pathology, flagging values requiring physician attention, and archiving results.
Completion is verified by an ARRT certified and registered technologist (postprimary certification is not required of the verifier), a supervisor, or a licensed physician. Verifiers are not required to directly observe the procedure and may verify remotely — a rule that applies to the verifier, never to the candidate.
Elective Procedures: Choose at Least Three
Candidates must complete at least three of the following activities the specified number of times:
| Elective activity | Required count |
|---|---|
| Perform and analyze a forearm DXA scan | 10 |
| Perform and analyze a VFA scan using DXA equipment | 5 |
| Perform and analyze scans for an in vivo precision study | 1 |
| Perform and analyze DXA scans on pediatric patients (ages 5–19) | 2 |
| Perform a FRAX assessment using an online FRAX calculation tool | 10 |
| Perform a follow-up scan and compare measurements from two occasions for the same patient | 10 |
| Answer basic patient or family questions about lifestyle, fall prevention, and drug therapies | 20 |
| Give a lecture to health care professionals or a community bone-health workshop | 1 |
Notice how closely this elective list tracks the examination blueprint: forearm scanning, VFA, precision studies, pediatric scanning, FRAX, serial comparison, and patient education are all separately tested topics. The clinical log is, in effect, a study guide.
Fees, Attempts, and Maintaining the Credential
- Application fee: $225 for the postprimary pathway; $450 when using an NMTCB credential as the supporting category. Fees are nonrefundable and are not transferable to another discipline. Each attempt requires a separate application and fee.
- Attempts: three attempts, all within three years of the date your first exam window opens. Exam attempts made as a state licensing candidate count against the three-attempt limit if you also apply for ARRT certification in the same discipline. Exhausting the attempts or the window without passing means requalifying.
- After you pass: registration renews annually, continuing education is 24 credits per two-year biennium, and BD credentials earned on or after January 1, 2011 are subject to Continuing Qualifications Requirements (CQR) — completed once every 10 years, during the final three years of the 10-year period.
A candidate logs 16 hours of structured education: 0 hours Patient Care, 8 hours Image Production, and 8 hours Procedures. Will ARRT accept it?
During one appointment a technologist scans a patient's lumbar spine, then both proximal femurs as a dual femur study. How many mandatory clinical procedures may be logged?
Which clinical experience activity may be satisfied using phantom scans rather than human patients?