Ingestion or aspiration of foreign bodies (FB) is a common reason for pediatric emergency department visits. Three variants were developed: 1) Variant 1 (suspect ingested or aspirated FB, initial imaging), neck, chest, abdomen, and pelvis radiographs are usually appropriate to identify the presence and location of a swallowed or inhaled FB. Low-dose noncontrast chest CT may also be appropriate when there is high suspicion for radiolucent FB; 2) Variant 2 (suspect ingested FB, initial radiographs…
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ACR Appropriateness Criteria® Chronic Pancreatitis
Chronic pancreatitis (CP) is a progressive disorder of the pancreas characterized by irreversible parenchymal and ductal changes, leading to chronic pain and pancreatic insufficiency. Its impact on quality of life can be profound and may further be complicated by acute inflammation superimposed on CP (ACP), potentially accelerating functional decline and increasing morbidity. Imaging plays an important role in diagnosing both CP and ACP, determining severity, identifying underlying causes, and d…
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Noninvasive MRI assessment of cerebrospinal fluid pressure in different phases of Ménière’s disease: a prospective study
Ménière’s disease (MD) is an idiopathic inner ear disorder characterized by recurrent episodes of vertigo, fluctuating sensorineural hearing loss, and tinnitus, associated with a pathological accumulation of endolymphatic fluid in the inner ear [1]. The typical progression of MD includes episodes of acute symptoms and periods of remission. Over the past eight decades, histopathological analyses of human temporal bones have consistently established a correlation between MD and endolymphatic hydro…
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Comparison of diagnostic capability and subtypes classification for inguinal hernias between upright and supine ADCTs
Inguinal hernias are the most common form of hernias, where a defect in the abdominal wall leads to protrusion of the parietal peritoneum with or without abdominal contents at the level of the groin. The lifetime risk of developing inguinal hernia is estimated to be 27–43 % in men and 3–6 % in women, with increasing incidence at advanced age and with higher body mass index [1–4]. Inguinal hernias can be complicated by incarceration or strangulation [5]. Surgical repair is the treatment of choice…
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Suggested Parameters for Clinical Infant Brain Imaging Using an Ultra-Low-Field Portable MRI System [ARTIFICIAL INTELLIGENCE]
SUMMARY:
Infants in the neonatal intensive care unit (NICU) can face barriers to access MRI of the brain including presence of assistive devices that are not MRI safe or conditional and staff resources needed to transport sick infants. An ultra-low-field (0.064T) portable MRI system has the ability to improve access by allowing infants to be scanned directly in the NICU eliminating the need to transport infants to the MRI scanner. However, the scanning parameters for ultra-low-field portable MRI… -
Contralateral Brain Region Exhibits a Hemispheric Difference in Brain Dynamic Functional Connectivity in Patients with Chronic ICA Occlusion [RESEARCH]
BACKGROUND AND PURPOSE:
Many imaging studies focused on the assessment of volume atrophy, structural damage, and abnormal functional connectivity (FC) in patients with carotid artery stenosis disease. Our purpose was to investigate the differences in dynamic functional connectivity within the contralateral brain in patients with chronic ICA occlusion using resting-state fMRI.MATERIALS AND METHODS:
In this trial, 21 patients with chronic occlusion of the ICA (17 men and 4 women) and 11 patients… -
Evaluation of [11C]CS1P1 in Healthy Young and Older Adults [RESEARCH]
BACKGROUND AND PURPOSE:
Sphingosine-1-phosphate receptor 1 (S1PR1) is a key regulator of neuroinflammation and plays a crucial role in multiple neurodegenerative diseases. [11C]CS1P1 is a novel PET tracer for measuring expression levels of S1PR1 in humans. Before widespread application, its quantification must be established and evaluated in healthy young and old adults through characterization of binding topographies, kinetics, and tracer metabolism rates.MATERIALS AND METHODS:
We acquired dy… -
Deep Learning-Based Acceleration in MRI: Current Landscape and Clinical Applications in Neuroradiology [ARTIFICIAL INTELLIGENCE]
SUMMARY:
MRI is a cornerstone of neuroimaging, providing unparalleled soft-tissue contrast. However, its clinical utility is often limited by long acquisition times, which contribute to motion artifacts, patient discomfort, and increased costs. Although traditional acceleration techniques, such as parallel imaging and compressed sensing help reduce scan times, they may reduce SNR and introduce artifacts. The advent of deep learning–based image reconstruction (DLBIR) may help in several way… -
Visualization of Nerve Pathology and Correlation with Clinical Severity in Bell Palsy Using 3D Double-Echo Steady-State with Water Excitation Sequence [RESEARCH]
BACKGROUND AND PURPOSE:
Bell palsy (BP) is the most common cause of facial nerve (FN) palsy. This study aimed to investigate the diagnostic ability of the 3D double-echo steady-state with water excitation (3D-DESS-WE) sequence to visualize pathologic changes in the FN of patients with BP.MATERIALS AND METHODS:
We retrospectively analyzed 30 patients with BP who underwent 3T MRI including 3D-DESS-WE within 30 days of onset and 60 sex- and age (SD, 2) matched controls. Qualitative evaluation of …