Top 10 Resources Every Radiology Technologist Should Bookmark
The field moves fast. New CT protocols, updated MRI safety guidelines, ARRT credential changes, pharmacologic advances in nuclear medicine — staying current requires more than showing up to work and completing the minimum CE credits. It requires a deliberate, curated set of resources you can access quickly when you need a reference, need to advance your credentials, or just need to understand why a protocol was changed.
This list covers the ten resources that belong in every radiology technologist’s professional toolkit — from official credentialing bodies to CE platforms, clinical references, and peer communities.
1. ARRT — American Registry of Radiologic Technologists
Website: arrt.org
ARRT is your credentialing authority. Every RT holding ARRT certification should have this bookmarked and visited at minimum once per year — ideally before and after any credential changes.
What you will use it for:
- Verify your biennial CE requirements and biennium deadline
- Use the CE Activity Search Tool to confirm a course counts as Category A before purchasing
- Download the current Continuing Education Requirements document
- Manage post-primary credentials (CT, MRI, mammography, etc.)
- Complete the annual renewal process
- Access CQR (Continuing Qualifications Requirements) resources
The detail most technologists miss: ARRT’s CE search tool lets you verify any provider’s course before spending money on it. Use it. Legitimate providers will always have their courses listed there.
2. ASRT — American Society of Radiologic Technologists
Website: asrt.org
ASRT is both an accrediting body for CE content and the primary professional association for radiologic technologists. Membership delivers tangible CE value: members receive immediate access to 17 free CE credits and the full online CE library (500+ courses), making the membership fee worth it for CE cost alone in most cases.
What you will use it for:
- Access to one of the largest CE libraries in the field — CT, MRI, mammography, nuclear medicine, radiography, radiation therapy, and more
- “Roadmap” resources for pursuing post-primary credentials in CT or MRI
- Professional advocacy resources, including salary surveys and scope-of-practice guidance
- ASRT Learning Center podcasts — earning Category A CE credit while commuting
- Journal of Medical Imaging and Radiation Sciences access for members
Affiliate link placement: (Insert ASRT membership affiliate link here)
3. SNMMI — Society of Nuclear Medicine and Molecular Imaging
Website: snmmi.org
For nuclear medicine technologists and techs working in PET/CT, SNMMI is the field’s defining professional organization. The SNMMI Technologist Section (SNMMITS) publishes clinical practice standards, procedure guidelines, and the authoritative Scope of Practice document for NMTs.
What you will use it for:
- Download SNMMI procedure guidelines — MPI, PET/CT, thyroid protocols, and more
- Access the NMT Scope of Practice (updated 2024 edition)
- State-specific NMT licensure requirement database
- Annual meeting educational content
- CE activities accepted by NMTCB
- Nuclear medicine technologist code of ethics
Even if you are not a dedicated NMT, any RT working in a modality with nuclear medicine overlap — particularly CT or PET/CT — should have SNMMI guidelines accessible.
4. NMTCB — Nuclear Medicine Technology Certification Board
Website: nmtcb.org
If you hold or are pursuing NMTCB certification (CNMT), this is your credentialing authority alongside or instead of ARRT (N). NMTCB administers the CNMT primary certification exam and the PET specialty credential — increasingly important as PET/CT programs expand.
What you will use it for:
- Manage your CNMT certification and CE reporting
- PET specialty examination eligibility requirements and clinical hour documentation
- CE policy details — which providers NMTCB accepts (different from ARRT’s RCEEM list in some cases)
- Annual registration and renewal
Key PET credential note: The NMTCB PET credential requires 700 hours of clinical experience on a dedicated PET scanner and is time-limited (7 years), requiring renewal through re-examination or 42 hours of specialty-specific CE.
5. Radiopaedia
Website: radiopaedia.org
Radiopaedia is the Wikipedia of radiology — a free, collaborative, peer-reviewed reference covering imaging anatomy, pathology, and technique across every modality. It is used daily by radiologists, residents, and technologists worldwide.
What you will use it for:
- Quick reference on anatomical structures when reviewing a protocol
- Case-based learning with annotated images across CT, MRI, nuclear medicine, X-ray, and ultrasound
- PET-CT indication summaries and normal variant references
- Artifact identification references — compare your image against known artifact examples
- FRCR and radiology board exam preparation resources (useful context for technologists preparing for specialty registry exams)
How to use it as a technologist: When you encounter an unusual finding or an unfamiliar protocol variant, Radiopaedia is often the fastest way to understand the clinical context. Understanding what the radiologist is looking for makes you a better technologist.
6. eRadImaging
Website: eradimaging.com
eRadImaging is a purpose-built CE platform for medical imaging professionals offering an annual subscription with unlimited access to over 110 ASRT-approved, ARRT-accepted Category A CE courses. It is consistently recommended by technologists on forums and Reddit for being affordable, efficient, and covering every modality including nuclear medicine.
What you will use it for:
- Complete all 24 biennial CE credits efficiently — there is no cap on credits completed per time period
- CT-specific CE: “Back to Basics: Introduction to CT,” “Head CT Imaging,” “Cardiac Imaging,” and more
- Nuclear medicine CE: “The Role of Nuclear Imaging in Gastrointestinal Disorders,” “Evaluating Thyroid Nodules,” and PET-related content
- CE accepted by ARRT, ARDMS, NMTCB, and CAMRT
- Florida automatic CE reporting (electronic submission to FL DOH)
Pricing model: Annual flat-rate subscription — cost-effective if you hold multiple credentials or want to exceed the CE minimum.
Affiliate link placement: (Insert eRadImaging affiliate link here)
7. MTMI — Medical Technology Management Institute
Website: mtmi.net
MTMI is the leading provider of cross-training and CE for imaging technologists. Their CT, MRI, mammography, and nuclear medicine programs are designed for technologists pursuing post-primary certification or needing high-quality CE that goes beyond rote compliance.
What you will use it for:
- CT Training Course for Technologists — 40.75 ASRT Category A CE credits, includes the 16 hours of Structured Education required for ARRT CT post-primary certification
- Registry Review webinars for CT, MRI
- Live webinar and self-paced formats — flexible scheduling
- PACS, radiation dose, and protocol-specific courses
- Trusted by institutions; 96% CT board pass rate reported by students
Who needs it: Any technologist pursuing ARRT CT or MRI post-primary certification, or senior technologists who want substantive, expert-taught CE rather than bare-minimum compliance content.
Affiliate link placement: (Insert MTMI affiliate link here)
8. ASNC — American Society of Nuclear Cardiology
Website: asnc.org
For technologists working in nuclear cardiology — particularly myocardial perfusion imaging, cardiac PET, and pharmacologic stress testing — ASNC is the authoritative source for clinical guidelines and best practices.
What you will use it for:
- Download ASNC SPECT Protocols & Tracers guidelines (free PDF)
- Regadenoson stress testing practice points and protocol documentation
- Cardiac PET/CT imaging guidelines
- Technologist-specific educational resources and webinars
- IAC (Intersocietal Accreditation Commission) accreditation standards for nuclear cardiology labs
The ASNC SPECT Protocols & Tracers document is the reference you want on hand when setting up or troubleshooting an MPI protocol.
9. r/Radiology and r/NuclearMedicine (Reddit)
URLs: reddit.com/r/Radiology | reddit.com/r/NuclearMedicine
Professional forums are where real clinical questions get answered by technologists with real-world experience. Reddit’s radiology and nuclear medicine communities are active, knowledgeable, and peer-reviewed in the best informal sense — bad advice gets corrected quickly.
What you will use it for:
- Real technologist experiences with CE providers (before spending money)
- Protocol tips and troubleshooting for specific procedures
- Career advice — cross-training, credential questions, job market observations
- Equipment comparisons and scanner-specific discussions
- Salary and workplace culture discussion by region
Important caveat: Never make patient care decisions based on forum content. Use these communities for career guidance, resource recommendations, and general professional discussion. Clinical protocol decisions require institutional chain of command.
10. ImageWisely and RadiologyInfo.org
Websites: imagewisely.org | radiologyinfo.org
These two resources serve different but complementary purposes.
ImageWisely is the professional resource on radiation dose optimization — co-sponsored by ACR, RSNA, ASRT, and AAPM. Its content addresses radiation safety protocols, dose optimization in CT and nuclear medicine, and FDG PET/CT dose reduction strategies. If you work in CT or PET/CT, the ImageWisely content on optimizing FDG PET/CT protocols is essential reading.
RadiologyInfo.org is the ACR’s patient-facing education site, but technologists use it for a different purpose: as a reference for what patient education content is accurate and evidence-based. When patients ask you questions about their procedure, knowing what authoritative patient education says helps you give consistent, accurate answers.
Quick Reference: Resource Summary Table
| Resource | Type | Best For | Cost |
|---|---|---|---|
| ARRT | Credentialing body | CE verification, renewal, credentials | Free (annual renewal fee) |
| ASRT | Professional organization + CE | Broad CE library, advocacy | Membership fee |
| SNMMI | Professional organization | Nuclear medicine guidelines | Free resources + membership |
| NMTCB | Credentialing body (NMT) | CNMT/PET credential management | Annual registration fee |
| Radiopaedia | Clinical reference | Anatomy, pathology, artifacts | Free |
| eRadImaging | CE platform | Efficient annual CE completion | Annual subscription |
| MTMI | CE + cross-training | CT/MRI certification prep, structured education | Per-course or bundle |
| ASNC | Professional organization | Nuclear cardiology protocols | Free guidelines + membership |
| Reddit (r/Radiology) | Peer community | Career guidance, practical tips | Free |
| ImageWisely / RadiologyInfo | Clinical + patient education | Radiation safety, dose optimization | Free |
Conclusion
The technologists who stay ahead are the ones with better resources and better habits around using them. Credentialing bodies, professional organizations, quality CE platforms, clinical references, and peer communities each serve a distinct purpose — and none replaces the others.
Start with ARRT and ASRT as your compliance foundation. Add SNMMI and NMTCB if you work in nuclear medicine. Use Radiopaedia and ImageWisely for clinical depth. Get your CE done efficiently through eRadImaging or with purpose through MTMI. Stay connected through ASNC and peer forums.
Building your professional library takes an hour. It pays dividends for your entire career.
Looking to maximize your CE dollars? Explore our detailed comparisons of the best CT CE platforms and top resources for nuclear medicine technologists — including current pricing and affiliate deals.