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…
Synthetic contrast-enhanced CT from a GAN improved gastric cancer histologic grade prediction AUC by 5.9% (internal) and 0.7% (external) over non-contrast CT in a 1,757-patient multicenter study. Lauren classification prediction improved 6.8% and 7.3%.
A deep learning algorithm for MRI-based abdominal body composition achieved Dice scores of 0.862-0.923, and strong correlation (r>0.95) with CT, but wide 95% limits of agreement for visceral fat (-8.0% to 35.9%) indicate need for modality-specific norms.
Bone-RADS 1 on MRI had 100% NPV for vertebral lesions (95% CI 94.7-100%, n=46). Bone-RADS 2/3 lesions had 3.4% malignancy rate, falling to 0% with clinical criteria. Inter-reader agreement was moderate (κ=0.60).
ASL-derived fractional tumor burden (FTB)-high differentiated recurrent tumor from radiation necrosis in 102 brain metastases after SRS (AUC 0.81, sensitivity 0.79, specificity 0.74). It performed comparably to perfusion metrics and outperformed delta T1.
In 90 CT-guided lung cryoablation procedures, a higher trajectory-based trauma index (TTI) strongly associated with pneumothorax (OR 21.87, P<.001) while greater pleural infiltration reduced odds (OR 0.56, P<.001). 62% had pneumothorax.
ESR Bridges: chronic thromboembolic pulmonary hypertension: new developments in imaging and treatment-a multidisciplinary view.
In 73 metastatic melanoma patients on immunotherapy, baseline peripheral rim iodine concentration on DECT independently predicted shorter progression-free survival and greater new-lesion burden, but not individual lesion progression. Organ-specific effects were heterogeneous.
At 13±2 s after exercise, biventricular volumes matched peak effort (all P=1.00), then declined linearly; left ventricular stroke volume fell 2.1 mL per 10 s. Rapid post-exercise cardiac MRI is a practical surrogate with better image quality.
ASTRO Members Elect Dr. Beth Erickson as President-Elect and Board of Director Members
LLM-generated clinical histories for imaging orders were more comprehensive and factual than those written by referring clinicians. Claude 3.5 Sonnet was rated most useful for protocoling and interpretation, per a Radiology study of >28,000 records.
DiffuDose AI model generates patient-specific radiation dose maps for radiopharmaceutical therapy in <23 seconds per patient, with accuracy comparable to the gold standard. It outperformed six competing approaches and accurately assessed dose in kidneys and liver.
New Data Highlights Potential for Focused Ultrasound in Prostate Cancer Treatment
<![CDATA[Could Quantification of Extracellular Volume Fraction with PCCT Be a Viable Alternative for Staging Liver Fibrosis?]]>
Siemens Healthineers and Cleveland Clinic Forge 10-Year Alliance to Boost Imaging and Clinical Innovation
Can LLMs fill the communication gap with referring clinicians?
AI Succeeds at Opportunistic Screening for Osteoporosis
Aycan launches AI anonymizer tool for medical imaging data
Incidence Proportion and Clinicopathological Characteristics of Phyllodes Tumors of the Breast Among Patients With Breast Lumps in Dubai, 2017-2022: A Retrospective Observational Study
Medicare outpatient imaging interpretation turnaround times increased 27% from 2023 to 2024, reaching 6 h 1 min on average. The share of studies read ≥1 day later quadrupled in a decade (1.97% to 7.39%), per JACR analysis of ~3M claims.
<![CDATA[Emerging Insights, Research and Trends in Computed Tomography]]>
ASTRO Names 39 Radiation Oncology Leaders as 2026 Fellows
60-year-old man with lesion on carcinoma follow-up revisited
GE HealthCare Launches Invenia ABUS Prime and ABUS StreamVue
A nonlinear subspace model using a denoising autoencoder jointly reconstructs k-q-space data, showing improved noise suppression and detail preservation versus MUSE and LLR in high b-value diffusion-weighted imaging, with minimal bias and higher precision.
After acute MI, multivessel disease (MVD) shows higher native T1, extracellular volume, and T2 in remote myocardium vs. single-vessel disease, differences persisting after adjusting for infarct size. Incomplete revascularization links to elevated remote ECV and T2.
Preliminary study: In bovine cartilage, Gaussian process regression predicted proteoglycan content from MR fingerprinting (median r=0.81, NRMSE 11.7%), but collagen fiber anisotropy prediction was weak (r=0.40). Raw MRF data outperformed qMRI maps.
In prostate MRI, moderate-to-severe hip prosthesis artifacts degraded all three deep-learning models (AUC 0.62–0.71) compared with exams without prostheses (AUC 0.74–0.81), while radiologist PI-RADS performance held up better (AUC 0.77–0.79 across artifact categories).
DLIR-H/50-keV dual-energy CT protocol showed non-inferiority to MRI for detecting arterial phase hyperenhancement (APHE) and washout in HCC, offering an alternative when MRI access is limited.
Manus AI using cone beam CT (CBCT) data achieved 95% detection and correct diagnosis of jaw lesions in 97 patients. Gemini 2.5 Pro detected 80% but correctly diagnosed 56%. Copilot and Claude were least accurate. Significant differences between chatbots.
National Turnaround Time Trends for Medicare Fee-for-Service Beneficiaries: Updated Through 2024.
