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…
CloudScope, a cloud-based miniature microscope, enables >24-h autonomous multicontrast neuroimaging in freely moving animals — tracking neuronal activity, blood flow, oxygenation, and tumor microenvironments simultaneously (exact performance figures not reported in source).
A fused deep learning model (EfficientNet-B3 + capsule network + ConvNext V2) classified silicosis on chest radiographs with 98.73% accuracy on a single dataset. Not yet externally validated; real-world performance unclear.
AI flags calcific tendinopathy on shoulder radiographs: CNN (VGG19) hit AUC 0.956 internal, 0.940 external; hybrid CNN-ML was similar (0.961/0.942, no significant difference). Trained on 4,268 XRs. Prospective real-world validation still needed.
BCALN-Net, an MRI-based hierarchical multitask deep learning model, predicts sentinel and non-sentinel lymph node status in 6,271 breast cancer patients, outperforming clinical criteria for axillary surgery de-escalation (pooled n=4,081; exact AUC not reported in source).
DL model auto-segmented knee effusion-synovitis volume (ESV) on MRI (Dice 0.79, 95% CI 0.71–0.86) in 4,698 OA knees. ESV showed stronger associations with structural features and symptoms than semiquantitative scores, but needs external validation.
Scoping review of 11 studies (2021–2025) finds AI detects deep vein thrombosis with ultrasound sensitivity 68–100% and specificity 70–100%; MRI-based models reached 95–97% across metrics. Authors conclude AI suits a supplementary role — multicenter validation still lacking.
A closed-form symbolic classifier using radiomic features (entropy, solidity, fractal dimension) detected pediatric pneumonia on chest X-rays: AUC 0.93 under cross-validation, 0.89 on hold-out test, with external dataset re-calibration. Fully auditable; no black-box needed.
In 56 ICU patients, DDR-derived post-extubation lung-area excursion was not independently associated with respiratory deterioration after adjusting for age. Exploratory XGBoost/SHAP flagged it as a contributor, but results are hypothesis-generating only.
A reply letter appears in JACR. No abstract or findings are available in the source snippet; substantive content, study data, and clinical conclusions cannot be summarized from the information provided.
The ACR Dose Index Registry (DIR) enables facilities, clinicians, and policymakers to benchmark and optimize CT radiation doses — a quality-improvement resource whose real-world impact on dose reduction is described qualitatively (exact figures not reported in source).
The Jan 2026 Hologic Brevera 9-gauge needle recall—triggering an FDA shortage—laid bare single-source dependency in vacuum-assisted biopsy. This JACR analysis argues stockpiling, vendor diversification, and procurement standardization are each necessary but none sufficient alone…
A fetal vestibular aqueduct angular trajectory (ATVA ≥140°) — the CT marker of the Meniere's disease hypoplastic endotype — also appears in congenital temporal bone anomalies without Meniere's. Found in 8 ears across 6 patients in a 98-patient retrospective cohort; clinical cont…
In adults aged 60–80 with early-stage HCC (BCLC 0/A) and Child-Pugh A cirrhosis who achieved complete ablation response, adding liver transplant conferred no statistically significant OS or cancer-specific survival advantage over surveillance alone (5-yr OS 92% vs 81%, p=0.075;…
Intentional laceration of the anterior mitral leaflet (LAMPOON) effectively prevents LVOT obstruction from transcatheter mitral valve replacement (TMVR) when risk is identified on preprocedural cardiac CT, per a new interventional working group consensus. The document synthesize…
Integrating at-home lab kits with virtual simulations significantly improved students' hands-on microbiology technical skills: streak-plate proficiency rose from 57.7 to 80.1 (P<0.05), and Gram staining from 55.0 to 80.1 (P<0.001). Quiz and lab report scores did not differ betwe…
FDA has granted 510(k) clearance to Quantified Imaging Limited's Perfusion Measurement Platform v1, a radiology image processing system (product code LLZ) for perfusion analysis. Exact clinical indications not disclosed in the clearance summary.
A novel prediction model combining logistic regression and machine learning with inflammatory markers and disease characteristics identified malnutrition in Crohn’s disease with AUC 0.967 on internal validation (training 0.987). Retrospective single-database study; external vali…
Bracco and Blue Earth Diagnostics are expanding their molecular imaging portfolios through new collaborations and strategic initiatives. The Applied Radiology profile highlights efforts to advance PET and SPECT diagnostics, though specific new tracers or technologies were not di…
A PET/CT for a pulmonary nodule reveals an unexpected FDG-avid focus adjacent to the right hepatic lobe. Four-phase CT is obtained to narrow the differential. What is your top diagnosis and the key imaging clue?
A case-based educational short presents grayscale, color Doppler, and panoramic ultrasound findings of an enlarging left gluteal mass. The challenge is to form a differential diagnosis before the answer is revealed.
New interactive case challenges viewers to differentiate an echogenic, hypovascular mass in the epididymal body. Review cine clips, formulate a differential, and compare your diagnosis with the upcoming teaching-point reveal.
A patient with prior hysterectomy and left oophorectomy develops new right-sided pelvic pain. Initial ultrasound showed a normal right ovary, but follow-up CT and ultrasound now reveal a new abnormality. The case challenges viewers to interpret the grayscale and color Doppler fi…
A CT shows a dense calcified mass in subcutaneous tissues, striking on bone windows and 3D reconstruction. Can you diagnose it? Answer in next video.
Biopsy-proven 'ovarian' carcinoma may originate elsewhere; in ascites and peritoneal nodules, scrutinize the pelvis for non-ovarian primaries.
A twisted vascular pedicle ('whirl sign') on CT is the hallmark of ovarian torsion, a surgical emergency. This case showed a large cystic adnexal mass with four twists around its pedicle, resulting in infarction. Ovarian masses >5 cm greatly increase torsion risk.
CT and ultrasound revealed a markedly enlarged ovary with central edema, peripheralized follicles, and absent internal Doppler flow in a patient with right pelvic pain. These findings represent the classic imaging triad of ovarian torsion, where venous obstruction causes hemorrh…
Primary peritoneal carcinoma, histologically identical to high-grade serous ovarian carcinoma, can present with diffuse peritoneal disease and normal ovaries. When cytology suggests ovarian origin but imaging shows no adnexal mass, scrutinize the peritoneum.
The "dancing megasperm" sign—tiny moving echogenic foci in the epididymis on ultrasound—indicates epididymal obstruction, not just filariasis. Recognizing it prevents misdiagnosis.
Abdominal cocoon (encapsulating peritoneal sclerosis) is a rare complication of long-term peritoneal dialysis, seen on CT as calcified fibrotic peritoneal thickening encasing bowel loops and causing obstruction. Prompt recognition prevents mismanagement.
Silicone injections in gluteal tissues produce a characteristic ultrasound “snowstorm” appearance: an enlarging mass with dirty posterior acoustic shadowing and no internal vascularity. Recognizing this sign can prevent misdiagnosis.
