Board-prep, core-curriculum, call-prep, and case-of-the-week material.
In a 15-center retrospective study (n=123), thrombectomy for posterior circulation tandem occlusions achieved 88.5% successful reperfusion. A distal-first approach was independently associated with favorable 90-day functional outcome (mRS 0–3 in 47%), shorter puncture-to-reperfu…
In 82,957 women with negative screening mammograms (Kaiser Permanente cohort), combining Mirai AI, a 313-SNP polygenic score, and BCSCv3 clinical risk reached C-index 0.70 (95% CI 0.69–0.71) vs 0.66, 0.62, and 0.61 for each alone — supporting integrated risk-stratified screening.
Single-center RCT: [68Ga]Ga-PSMA-11 PET/CT-guided robotic biopsy detected prostate cancer in 97.1% of PI-RADS 4–5 men vs 81.0% with mpMRI cognitive-fusion TRUS biopsy (P<0.05), and had far fewer complications (10.8% vs 51.4%, P<0.01).
ACR BI-RADS v2025 — the first year-versioned edition — drops 'focus' and 'developing asymmetry,' adds ultrasound 'non-mass,' standardizes Category 4 subdivisions across modalities, and reframes mammographic density around masking risk rather than volume.
A JVIR summary distills the 2026 AHA/ACC/ACCP/CHEST/SIR (and 7 other societies) acute pulmonary embolism guideline for interventional radiologists, highlighting updated recommendations on catheter-directed therapy and IR's expanding role in PE management.
Key stroke imaging timelines: CT perfusion detects abnormalities near-immediately (<30 min). DWI turns positive at 30-60 min. FLAIR changes appear at 4-6 h. Noncontrast CT becomes abnormal at 6-24 h. Postcontrast enhancement is seen at 2-3 days. A quick reference for image inter…
A DL-generated high-contrast thin-slice CT (HCCT) from plain NCCT pushed inter-rater ASPECTS correlation from 0.72 to 0.94 (p<0.001) in 303 LVO stroke patients across 4 centers — outperforming standard NCCT for early ischemic change detection and favorable-outcome prediction.
2026 Brain Attack Coalition consensus: Noncontrast CT and CT angiography are essential at Primary Stroke Centers; perfusion imaging and MRI strongly recommended but not required, preserving flexibility for resource-variable settings. AI may expedite workflow but needs cautious r…
After venous sinus stenting for pulsatile tinnitus, temporal bone remodeling occurred in 73.1% of patients with follow-up CT (38/52). Remodeling was significantly more likely with a diverticulum vs isolated wall dehiscence (85.7% vs 47.1%; adjusted OR 8.08, 95% CI 1.31-49.73), a…
The ACR has issued its 2026 update to Appropriateness Criteria for myelopathy, providing evidence-based imaging guidance for acute, chronic, and vascular causes of spinal cord dysfunction to help differentiate extrinsic from intrinsic pathology.
Across >3 million multicenter emergency department encounters, overall ED neuroimaging utilization doubled from 2016 to 2025. Head CT without contrast remained dominant, but CT perfusion use rose >5-fold over the same period, signaling a marked shift in acute stroke workup inten…
FDA has warned a medical device manufacturer that its 'MRI-safe' ventilator claims may lack adequate supporting evidence, following a federal inspection. MRI safety labeling for life-support devices carries direct patient-safety implications.
ChatGPT-4o scored 74.9% on 183 multimodal critical care board questions vs. 71.1% for pooled clinicians (p=0.03), but 33.3% of its responses were flagged for potential clinical harm, driven largely by poor image interpretation (61.7% correct) and flawed reasoning.
Deep learning-accelerated DIR MRI reduced optic nerve scan time by 44% (23 min → 13 min) in 75 patients with suspected optic neuropathy, detected significantly longer lesions than STIR (β=7.4–7.6%, p<0.001), and was interchangeable with conventional DIR. Prospective single-cente…
Interventional radiology is consolidating into a distinct specialty: the share of radiologists doing any IR work fell from 66.9% to 49.6% (2008–2023), while those with >90% IR workloads doubled (4.1%→8.8%), and the odds of super-majority IR work rose 65% by 2020–2023 (OR 1.65; 9…
Multi-center AI (45,139 ultrasound images, 9,215 fetuses, 22 hospitals) detected fetal orofacial clefts with sensitivity >93% and specificity >95%, matching senior radiologists. Used as a copilot, it raised junior radiologists' sensitivity by >6 percentage points.
On 106 image-based neuroradiology MCQs, expert neuroradiologists reached mean accuracy 0.915 (95% CI 0.877–0.953). GPT-5 and Gemini 2.5 trailed by ~0.22–0.24 per item and aligned closer to learner than expert performance; improved mean scores did not guarantee consistent executi…
In 575 cT1a renal cell carcinomas treated with CT-guided cryoablation, an iceball margin <5 mm identified local treatment failure with 88% sensitivity and 94% specificity (AUC 0.97). All in-zone failures had margins <5 mm; achieving ≥5 mm was strongly tied to durable control.
After propensity matching, M2 occlusion thrombectomy yielded good functional outcome (90-day mRS ≤2) in 51.9% vs 30.8% for M1 (OR 2.32, 95% CI 1.01–5.3; p=0.04), with lower mortality. Benefit concentrated in NIHSS ≥6 — possibly explaining neutral medium-vessel RCT results.
Updated ACR Appropriateness Criteria confirm radiographs as the first-line imaging for chronic knee pain. Additional imaging (MRI, etc.) is outlined for specific scenarios including confirmed osteoarthritis, osteochondral lesions, subchondral insufficiency fracture, and soft-tis…
SCCT and SCAI (endorsed by ACC) release expert consensus on CT-derived fractional flow reserve (FFR-CT): appropriate use, patient selection, reporting, and integration with coronary CT angiography workflows. Provides field-wide standardization where formal guidelines were absent.
Updated ACR/SIR multisociety guideline mandates image guidance for all epidural steroid injections (ESI), citing rare but serious FDA-flagged neurologic risks. ESI recommended within multidisciplinary care, not as stand-alone therapy, for neck/low back pain with radiculopathy.
No prior standard existed for intraprocedural echo guidance during mitral transcatheter edge-to-edge repair. ASE now defines required 2D, biplane, and 3D imaging views and communication steps for each procedural stage.
SIR's 2026 guidance on prostatic artery embolization (PAE) for benign prostatic hyperplasia updates patient selection, technique, and periprocedural care, reflecting RCT and meta-analysis data through 2025 and PAE's new AUA guideline recognition.
EASL's 2025 clinical practice guidelines update recommendations for liver vascular diseases—portal vein thrombosis, Budd-Chiari syndrome, PSOD, SOS, and more—emphasizing multidisciplinary, individualized care based on evidence published since the 2016 version.
EASL 2025 evidence-based guidelines for extrahepatic cholangiocarcinoma (CCA) address early detection, accurate subtype classification (distal vs. perihilar), and integration of molecular profiling into diagnosis and treatment — reflecting real-world clinical management gaps.
New ACR guideline: do not defer breast imaging because of lactation. Mammography with tomosynthesis, targeted ultrasound, and contrast MRI all have defined roles. Gadolinium and most nuclear medicine tracers result in negligible infant exposure — breastfeeding interruption not r…
Updated ACR guidelines: CT abdomen/pelvis with IV contrast + CT urography are usually appropriate first-line for suspected penetrating upper urinary tract trauma; CT urography preferred when collecting system injury is suspected. Retrograde urethrography, CT cystography compleme…
Interviews with 10 Canadian IM faculty revealed that transgender health—even evidence-based areas like cardiovascular care—is excluded from residency curricula. A Queer Theory lens identified an unspoken 'default patient' as cisgender, with structural forces (hierarchy-driven de…
No FDA-approved PSMA-targeted PET radiopharmaceutical ([68Ga]Ga-PSMA-11, [18F]DCFPyl, [18F]rhPSMA-7.3) has proven diagnostic superiority for prostate cancer imaging; they differ in clearance routes (renal vs hepatic) and supply logistics, so choice should be guided by operationa…
