With the capability of accurate and comprehensive assessment of cardiac morphology and function, cardiac magnetic resonance (MR) imaging plays an important role in the diagnosis of a range of heart diseases [1]. The conventional balanced steady state free precession (bSSFP) cine sequence with breath-holding (BH) is a clinical reference standard for assessing ventricular volumes and function in cardiac MR [2]. However, this approach requires multiple BHs to complete a full scan and to avoid respi…
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Effects and safety of the transradial artery approach for cerebral angiography: A comparative observational study
Conventionally,the transfemoral artery approach has been the primary approach for neurointervention. However, this approach has been associated with perioperative complications. Thus, the purpose of this study was to evaluate the safety and feasibility of the transradial artery approach in cerebral angiography.
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Brain pulsation demonstrated by CSF flow artifacts on FLAIR images might be associated with brain function
The glymphatic system works to excrete waste products from the brain. If it breaks down, cognitive impairment can occur. The system is mainly driven by arterial and brain pulsation. Brain pulsation is recognized as cerebrospinal fluid (CSF) flow artifacts on fluid-attenuated inversion recovery (FLAIR) imaging. We investigated the factors associated with human brain pulsation.CSF flow artifact grade (score) was defined by comparing the highest intensity in a given region of interest (ROI) to thos…
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Comparison of unilateral and bilateral percutaneous transhepatic biliary drainage for management of malignant hilar biliary obstruction: Effects on inflammation and outcomes
Biliary obstructions are often caused by benign conditions such as choledocholithiasis (stones in the bile duct) and post-cholecystectomy strictures. However, malignant hilar biliary obstructions (MHBO) are associated with more severe conditions, including cholangiocarcinoma, gallbladder cancer, lymphatic compression, or metastasis. These conditions contribute to the high morbidity and mortality rates associated with biliary obstructions [1,2]. Curative surgical resection is the most effective m…
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Impact of spectrum bias on deep learning–based stroke MRI analysis
A diagnostic test typically involves defining thresholds to classify patients as healthy or sick [1]. This concept applies to both human-driven and machine-assisted diagnostic processes. However, diagnoses are constructed categories designed to classify complex pathological processes [2].
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Absence of T2 flow voids in the vertebral arteries on cervical spine MRI in patients with trauma
Cervical spine trauma is a considerable cause of morbidity and mortality, often resulting in devastating neurological consequences [1]. Blunt vertebral artery (VA) injury is an increasingly recognized complication in patients with cervical spine trauma, with an incidence ranging up to 17 % [2]. The VAs are crucial vessels supplying blood flow to the brainstem, cerebellum, and spinal cord. VA injuries are often initially asymptomatic but carry a significant stroke risk of 5.3 %, which can lead to…
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Visualization of the middle meningeal artery on photon-counting detector CT: Comparison with energy-integrating detector CT
The middle meningeal artery (MMA) branches from the external carotid artery, and it is the major dural artery [1]. The MMA is also the target artery for the embolization of intracranial tumors and dural arteriovenous fistulas [2,3]. It has been suggested that embolization of the MMA is useful for the prevention of recurrences of chronic subdural hematomas [4,5]. The MMA is known to merge with intracranial blood vessels via numerous branches, and its running and anastomoses have exhibited varying…
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Ultra-high resolution photon-counting detector coronary CT minimizes overestimation bias compared to invasive reference
Photon-counting detector CT with ultra-high-resolution (UHR) mode shows promise in enhancing coronary assessment by offering higher spatial resolution. In the present study, UHR- coronary CT angiography (CCTA) was compared to invasive quantitative coronary angiography (QCA) for evaluating coronary stenosis. Results revealed that UHR-CCTA significantly reduces overestimation bias in stenosis measurements, particularly in heavily calcified plaques, a known limitation of previous imaging methods. T…
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The Association between opportunistic DECT-derived bone values and vertebral fracture status
Osteoporosis is a major cause of spinal insufficiency fractures but often remains underdiagnosed. Dual-energy CT (DECT) enables reliable assessment of bone mineral density (BMD), but its limited accessibility highlights the need for alternative metrics. This study investigates the association between vertebral fracture status, DECT-derived BMD and alternative bone quality assessments, including Hounsfield Unit (HU)-based assessment and cortical thickness ratio.
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DWI/ADC in response assessment after local-regional treatment of HCC – Pearls and Pitfalls
Hepatocellular carcinoma (HCC) is the most common primary liver cancer which usually develops in the setting of liver cirrhosis. Curative treatment strategies for HCC involve tumor resection, liver transplantation or ablation. However, many patients present with advanced-stage disease or multifocal tumors which make them unsuitable for radical treatment options. In such cases, locoregional therapy (LRT) such as transarterial chemoembolization (TACE), transarterial radioembolization (TARE) can be…