Board-prep, core-curriculum, call-prep, and case-of-the-week material.
PCWG4 revises prostate cancer trial design: integrates PSMA PET/CT for eligibility and response, redefines radiographic progression, and introduces 'no longer clinically benefitting' to guide treatment continuation beyond standard endpoints.
A 2023 survey of 3,919 Chinese hospitals found wide variability in prostate MRI practice: only 58.7% included high b-value diffusion-weighted imaging, and 55.3% still used unstructured reports — signaling major PI-RADS standardization gaps nationally.
A special report details how a radiologist raised concerns about suspected in-hospital abuse in a neonatal ICU — and alleges the institution did not adequately respond to that warning.
Tube voltage significantly affects CT attenuation-based hepatic steatosis measurements: 120-kVp-equivalent vs. 80-kVp images showed r = 0.921–0.975, but regression-adjusted values agreed excellently (ICC 0.966–0.992, mean difference ≤0.7 HU), enabling reliable cross-kVp steatosi…
AI-assisted appendicular fracture detection (AUC 0.847, 95% CI 0.811–0.881) improved accuracy for 2 of 3 radiologists (~76% → 83%, p≤0.001) and cut median read time 33% (12.9→8.6 s) in a retrospective MRMC study; prospective multicenter validation still needed.
AI assistance significantly improved radiologic technologist detection of intraventricular and subdural hemorrhage (5/30 reader-task comparisons, p≤0.007) but did not improve overall any-hemorrhage AUC in this retrospective 100-CT study.
A practical review synthesizes how preoperative breast MRI—detecting additional ipsilateral disease in ~20% of newly diagnosed breast cancers—should guide surgical planning under BI-RADS v2025, including new 'Additional Close Findings' category and key oncoplastic thresholds.
An interpretable radiomics framework mapping quantitative US features to TI-RADS semantics achieved ROC-AUC 0.941 ± 0.004 for benign vs. malignant thyroid nodule classification across 5,542 multicenter nodules — with SHAP analysis confirming texture heterogeneity as the dominant…
PI-RADS v2.1 subcategorization of category-4 peripheral zone lesions (upgraded vs. non-upgraded) had only fair-to-moderate inter-reader agreement (Gwet's AC1 0.29–0.57) across 3 radiologists scoring 375 lesions; csPCa yield for upgraded lesions ranged 39–68% vs. 63–81% for non-u…
For PI-RADS 3 lesions, MRI-derived real PSA density (rPSAD) achieved AUC 0.846 (95% CI 0.767–0.924) for clinically significant prostate cancer — outperforming conventional PSAD. A sequential strategy flagged 53% cancer prevalence in the high-risk tier. Retrospective; n=116.
Combined transjugular intrahepatic portosystemic shunt (TIPS) plus transvenous obliteration appears effective for managing gastric varices, per a new JVIR study. Key efficacy numbers not reported in available abstract — findings warrant full-text review.
Retrospective QI study (n=185) found diagnostic errors in 14.6% (95% CI 10.2–20.4%) of adults undergoing abdominal imaging with a radiologist-recommended additional imaging request. 'Delay in performing ordered test(s)' was the leading contributory factor. Structured annotation…
ACR Appropriateness Criteria for penetrating torso trauma now address the evolving military threat environment, providing imaging guidance tailored to high-velocity and blast injury patterns distinct from civilian trauma — relevant for both combat and mass-casualty scenarios.
ACR Appropriateness Criteria for pediatric GI bleeding: CTA abdomen/pelvis is usually appropriate first-line imaging in unstable patients; nuclear medicine (Meckel scan, tagged RBC) aids localization; many benign cases need no imaging at all.
A JACR paper challenges studies that validate head CT reformatting techniques against AI output rather than a true ground truth — arguing this measures AI agreement, not diagnostic accuracy. Methodological distinction matters for interpreting such literature.
iLATAM-AP: first Ibero-Latin American clinical guidelines for acute pancreatitis deliver 20 GRADE-rated recommendations covering diagnosis, complications, antibiotics, ERCP timing, and cholecystectomy — aimed at standardizing care across diverse regional healthcare settings.
Updated Korean pediatric resuscitation guidelines favor bag-mask ventilation over intubation in out-of-hospital arrest. New diastolic BP targets: ≥25 mmHg (infants), ≥30 mmHg (children ≥1 yr). ECPR limited to resourced centers for in-hospital arrest.
A 14-member, 10-society panel reached unanimous or near-unanimous consensus on 25 recommendations covering workflow, quality, safety, economics, and policy for medical 3-D printing at health care facilities.
PI-RADS v2.1 standardizes prostate mpMRI reporting but inter-reader variability and transition-zone ambiguity persist. Adding PSA density aids PI-RADS 3 triage; biparametric MRI matches diagnostic accuracy contrast-free; AI narrows the experience gap. Prospective multi-site vali…
ECFS-CTN consensus (Delphi process) supports chest CT for CF patients with hemoptysis, allergic bronchopulmonary aspergillosis, or NTM-positive cultures (>2 sputum samples or 1 bronchoscopic result). Final CT justification rests with treating clinicians.
The American Board of Radiology is bringing back the oral exam. ABR Executive Director Brent Wagner, MD, MBA, breaks down the changes in this RSNA interview — essential viewing for residents and program directors preparing for board certification.
ABR Executive Director Brent Wagner, MD, MBA details the evolving certification pathway for radiology residents — including the return of the oral exam — in this RSNA Unscripted episode aimed at trainees and program directors.
The ACR has updated its Appropriateness Criteria for major blunt trauma (2026), offering a patient-facing summary of imaging recommendations to guide appropriate workup after high-energy injury. Specific recommendation changes vs. prior version not detailed in source.
ACR releases updated 2026 evidence-based guidelines on imaging after shoulder arthroplasty — covering hemiarthroplasty, conventional total shoulder, and reverse total shoulder — with GRADE-adapted recommendations across clinical variants to guide appropriate modality selection.
New ACR Appropriateness Criteria: routine imaging not indicated for uncomplicated recurrent UTIs in females. Complicated cases warrant ultrasound screening or CT urography; pregnant patients: ultrasound first, noncontrast MRI selectively.
ACR guideline: cranial ultrasound first in infants with open fontanelles; MRI preferred for defining obstruction; abbreviated/rapid MRI may avoid sedation; noncontrast CT reserved for urgent or MRI-inaccessible situations.
Combining PI-RADS v2.1 with PSA density (PSAD) raised AUC to 0.873 (95% CI 0.835–0.905) vs 0.802 for PI-RADS alone and 0.808 for PSAD alone in distinguishing transition-zone prostate cancer from BPH — retrospective, single-center, n=377.
ChatGPT-3.5, -4, and -4o all showed significant mean bias vs. ACR Appropriateness Criteria for breast imaging (biases 1.76–2.47, all p<0.001), while experienced breast radiologists had a non-significant mean bias of 0.24 (p=0.489). Human oversight remains essential.
Updated ACR Appropriateness Criteria recommend CTA or MRA for nonpregnant adults with suspected or known renal/splanchnic artery aneurysms; ultrasound and noncontrast MRA are preferred in pregnancy to limit radiation and contrast exposure.
ACR TI-RADS and K-TIRADS show substantial inter-system agreement (κ=0.61) and similar AUC (p=0.52) across 4 readers, but ACR TI-RADS yields higher sensitivity and NPV at the cost of lower specificity and more unnecessary biopsies — retrospective, single cohort.
