ASFNR clinical state-of-practice: For posterior circulation large vessel occlusion stroke, use noncontrast CT to exclude hemorrhage, CT angiography to identify occlusion, and MRI with DWI as reference standard. Imaging scores like PC-ASPECTS help select patients for thrombectomy.
The ACR Appropriateness Criteria 2026 update provides imaging guidelines for suspected or confirmed diffuse lung disease, covering initial evaluation, acute exacerbation, and surveillance.
New expert consensus framework for symptomatic B3 breast lesions: assess concordance, lower excision threshold for discordant/palpable lesions, conservative management for concordant non-atypical lesions, and risk-based surveillance for atypia.
ACR Appropriateness Criteria for indolent lung cancer: For patients with slow-growing subsolid nodules or atypical cysts where surveillance is chosen over intervention, imaging follow-up aims to detect changes that alter management, with modality selection guided by accuracy and…
Budd-Chiari, splenomegaly, and bilateral adrenal infarction on imaging should prompt consideration of a unifying hypercoagulable disorder such as antiphospholipid syndrome.
What are the 3 major abnormalities on this CT?
Diffuse bilateral vas deferens calcification on CT is an uncommon but important imaging clue that should raise suspicion for underlying diabetes mellitus, especially in a younger patient.
This portal venous phase CT after a motor vehicle collision shows an unintentional split-bolus appearance from prior contrast in the collecting systems. Inspect the kidneys and collecting systems closely—can you spot the abnormality? The full explanation is coming in the next vi…
MRI Basics: 3D T1 Fat-Suppressed GRE (VIBE/LAVA)
T2-weighted MRI sequences highlight water content, making fluid and edema appear bright. Quickly distinguishing T1 from T2 is a foundational skill for image interpretation.
AI Summaries Help Patients Better Understand Reports
Qureight raised $20M to expand its AI imaging platform for cardiopulmonary trials and will build a 3D deep learning chest imaging lab to create biomarkers for lung fibrosis, asthma, and other diseases.
In a retrospective study of 69 Bethesda IV thyroid nodules, ultrasound radiomics with a Random Forest model achieved an AUC of 0.735 (95% CI 0.513-0.956) on a held-out test set, but wide CIs highlight need for larger validation.
A deep learning model detected acute pancreatitis on abdominal CT with an AUROC of 0.89 (internal) and 0.99 (external) in a retrospective multicenter study of 552 patients. External validation F1 score was 0.92.
A molecular imaging companion to the Kidney Imaging Reporting and Data System (KI-RADS) is proposed, using 99mTc-sestamibi SPECT/CT and 89Zr-girentuximab PET/CT to generate a five-point Likert scale for aggressive histology risk in indeterminate renal masses.
Dynamic retrieval of top-10 similar cases boosted GPT-4o’s ROUGE-1 F1 to 0.44-0.47 (vs 0.35-0.37 zero-shot) and LLaMA’s to 0.37-0.50 (vs 0.25-0.37) on 599 CTPA reports, all p<0.05.
A modified O-RADS model subclassifying Category 4 adnexal masses by >10 locules and color score yielded a low-risk subgroup (4a) with 2.9% malignancy and a high-risk subgroup (4b) with 45.3% malignancy, achieving an AUC of 0.956.
Mixed Reality Fluoroscopy Guidance for Direct Thoracic Duct Cannulation and Pre-Operative Lymphangiography.
For small HCC ≤3 cm treated with stereotactic microwave ablation, minimal ablation margin is a key predictor of local tumor progression: odds ratio 0.68 per mm increase (p<0.001). Lesions with progression had mean margin 2.9 mm vs 4.7 mm without.
MRI radiomics-clinical fusion model predicted radiotherapy response in cervical cancer: random survival forest had AUC 0.863, accuracy 0.920, sensitivity 0.937, specificity 0.833 (internal validation).
A multi-task AI model for diabetic retinopathy grading achieved kappa 0.858 on internal test, 0.821 on external validation, with referable-DR sensitivity 0.928. Cross-task attention was key.
Artificial Intelligence in Clinical Medical Imaging
A cascaded deep learning pipeline that automatically segments and classifies small renal masses on MRI achieved an external-test AUC of 0.788, comparable to a senior radiologist. On the internal test set (AUC 0.936), it significantly outperformed the senior radiologist and junio…
In 91 patients, deep learning reconstruction on MRCP significantly improved image quality and boosted reader diagnostic confidence for intraductal papillary mucinous neoplasm (IPMN) typing, malignancy criteria, and common bile duct (CBD) stone detection.
Siemens Healthineers received FDA 510(k) clearance for its MAGNETOM Flow MRI systems (Flow.Elite, Flow.Neo, Flow.Rise, Flow.Pure).
FDA has granted 510(k) clearance to Radiaction Ltd. for its Shield System designed for use with Siemens 30x40 systems, a radiation protective shield for radiology.
FDA has cleared Esaote's I-Genius diagnostic ultrasound system via the 510(k) pathway for general imaging use.
The FDA has cleared the Affinity PET system (Hermes Medical Solutions) via 510(k) with product code QIH, indicating a positron emission tomography device. Radiology committee reviewed.
The FDA has cleared RadioViewAI, a software device by NeurocareAI, via the 510(k) pathway for automated analysis of brain MRI images.
A narrative review finds lower DTI-ALPS, an MRI marker of glymphatic clearance, is consistently tied to worse memory and global cognition across Alzheimer's, small vessel disease, Parkinson's, and other conditions. Longitudinal data suggests DTI-ALPS decline may precede detectab…
Weighted metric combination predicted radiologist-assigned perfect satisfaction (Likert 5) for DL thigh MRI segmentations with 84.1% accuracy, 100% recall, AUC 0.824, outperforming any single metric.
ACR Resources Help Drive Successful Fibroid Awareness Event
Luskin Orthopaedic Institute for Children expects a new 3T MRI to slash pediatric orthopedic wait times from 2.5 months to just 2.5 days, improving access to radiation-free imaging for over 60,000 annual visits.
Hyperfine touts studies featuring Swoop system
