BACKGROUND AND PURPOSE:
The adoption of routine clinical 7T MRI has been constrained by several challenges, with heterogeneity of the transmit field (B1+) being among the most notable. Dynamic parallel transmission (pTx) presents a promising strategy to enhance B1+ transmit homogeneity; however, associated technical challenges have limited its routine use. We assess performance of a prototype dynamic pTx implementation for the 3D sampling perfection with application-optimized contrasts by using …
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Clinical Implementation of Dynamic Parallel Transmission in 7T Brain MRI: Improved Homogeneity and Contrast Using SPACE Sequences [RESEARCH]
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The Role of Ferumoxytol-Enhanced MR Venography in Transvenous Embolization of CSF-Venous Fistulas [RESEARCH]
BACKGROUND AND PURPOSE:
Spontaneous intracranial hypotension (SIH) often results from CSF-venous fistulas (CVFs), and transvenous embolization is an effective treatment. Precise preprocedural venous mapping is crucial to optimize outcomes and mitigate risks. The purpose of this study was to evaluate the utility of ferumoxytol-enhanced MRV in delineating venous anatomy for preprocedural planning in CVF treatment.MATERIALS AND METHODS:
This retrospective study included 57 participants referred f… -
Time Is Spine: A Novel Radiology Reporting System for Optimizing Spine Oncology Decision-Making and Reducing Time to Treatment [RESEARCH]
BACKGROUND AND PURPOSE:
Patients with spinal metastases are at risk of instability and cord compression, requiring prompt diagnosis and timely intervention. Effective communication between radiologists and treatment teams is critical to ensure timely treatment. Thus, we developed a novel dictation macro incorporating findings of spine oncology imaging and a linked automated notification system to accelerate spine oncology referrals and enhance care delivery.MATERIALS AND METHODS:
A spine MRI d… -
A Practical Guide to Microtia Scoring: Step-by-Step [CLINICAL]
SUMMARY:
Microtia/aural atresia reconstruction surgery focuses on improving hearing and cosmesis in patients with microtia, aural atresia, and aural stenosis. Preoperative evaluation of microtia with high-resolution CT plays an important role in assessing the potential for the successful surgical restoration of hearing. Given the challenges of the procedure, surgical candidates are carefully selected, taking into account the CT imaging findings. The Jahrsdoerfer scoring system is a semiquantitat… -
Risk Factors for Epidural Hematoma Expansion and the Need for Surgery [CLINICAL]
BACKGROUND AND PURPOSE:
The use of head CT in trauma settings has increased significantly, driven by the need to detect and monitor intracranial hemorrhages. Among intracranial hemorrhage subtypes, epidural hematomas (EDHs) are relatively uncommon but require careful evaluation due to their potential for expansion and the need for surgical intervention. This study aimed to identify risk factors for initial EDH size, subsequent enlargement, and the need for surgical intervention to guide imaging … -
3D Gadolinium-Enhanced CISS for the Diagnosis of Ischemic Third Nerve Palsy [CLINICAL]
BACKGROUND AND PURPOSE:
Microvascular ischemic neuropathy is a common cause of third nerve palsy (TNP) in adults. Gadolinium enhancement of the intracavernous segment of the third cranial nerve (CNIII) has been previously reported in this context. Given the high spatial resolution of the 3D CISS sequence for analyzing the cavernous sinus, our objective was to evaluate the diagnostic accuracy of intracavernous third nerve changes on 3D contrast-enhanced CISS in differentiating microvascular ische… -
Compressed Sensing Technology Accelerated 3D-FLAIR MRI Sequence for Endolymphatic Hydrops at 3T [RESEARCH]
BACKGROUND AND PURPOSE:
3D-FLAIR sequence has an important contribution to the display of endolymphatic hydrops (EH) in Meniere disease (MD), but its clinical application is limited because of the long acquisition time. We investigated whether 3D-FLAIR combined with compressed sensing (CS) technology (3D-FLAIR-CS) can shorten the scan time while maintaining the image quality and diagnostic efficiency for EH.MATERIALS AND METHODS:
This prospective study included 50 patients with unilateral defi… -
ihtObtura, a New Liquid Embolic Agent for Improving Curative Embolization of Brain AVMs [CLINICAL]
BACKGROUND AND PURPOSE:
We report our initial experience with ihtObtura, a novel nonadhesive liquid embolic agent (LEA) with progressive postembolization loss of radiopacity for curative embolization of brain AVMs (bAVMs).MATERIALS AND METHODS:
A post hoc analysis of the CLARIDAD trial, a single-center, first-in-human study, was performed. Collected data on consecutive patients with bAVMs treated with ihtObtura (between November 2021 and September 2022) were analyzed. Patient demographics, AVM… -
Thirteen-Year Trends and Advancements of Endovascular Therapy for Dural Arteriovenous Fistulas in Japan: Insights from a Nationwide Study of 6470 Procedures [CLINICAL]
BACKGROUND AND PURPOSE:
Endovascular therapy for dural arteriovenous fistulas (dAVFs) has evolved with advancements in imaging technology and devices. However, few large-scale, nationwide studies have been reported. This study aimed to investigate the trends and advancements in endovascular therapy for dAVFs during the past 13 years.MATERIALS AND METHODS:
We identified patients from the Japanese Registry of Neuroendovascular Therapy (JR-NET) database treated for dAVFs between 2007 and 2019. We… -
Baseline Gadolinium Enhancement of the Intracranial Aneurysm Wall and 3D Morphologic Change during Long-Term Follow-Up [ARTIFICIAL INTELLIGENCE]
BACKGROUND AND PURPOSE:
Previous studies have shown that intracranial aneurysm wall enhancement (AWE) is associated with aneurysm growth or rupture. These studies assessed growth with manual 2D measurements or eyeballing, both of which are prone to interobserver variability. To minimize this variability, we assessed the association between AWE and semiautomatically quantified 3D morphologic changes in aneurysms during long-term follow-up.MATERIALS AND METHODS:
We included patients with an unru…