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Index by author

January 01, 2024; Volume 45,Issue 1

  1. Davison, Hal C.

    1. Spine Imaging and Spine Image-Guided Interventions
      Lateral Decubitus Dynamic CT Myelography with Real-Time Bolus Tracking (dCTM-BT) for Evaluation of CSF-Venous Fistulas: Diagnostic Yield Stratified by Brain Imaging Findings
      Thien J. Huynh, Donna Parizadeh, Ahmed K. Ahmed, Christopher T. Gandia, Hal C. Davison, John V. Murray, Ian T. Mark, Ajay A. Madhavan, Darya Shlapak, Todd D. Rozen, Waleed Brinjikji, Prasanna Vibhute, Vivek Gupta, Kacie Brewer and Olga Fermo
      American Journal of Neuroradiology January 2024, 45 (1) 105-112; DOI: https://doi.org/10.3174/ajnr.A8082

  2. Del Grande, Filippo

    1. FELLOWS' JOURNAL CLUBSpine Imaging and Spine Image-Guided Interventions
      Frequency of Coexistent Spinal Segment Variants: Retrospective Analysis in Asymptomatic Young Adults
      Edward S. Yoon, Farhad Pishgar, Avneesh Chhabra, Filippo Del Grande and John A. Carrino
      American Journal of Neuroradiology January 2024, 45 (1) 119-126; DOI: https://doi.org/10.3174/ajnr.A8071

      Spinal segment variants are highly prevalent and can potentially lead to incorrect spinal enumeration. The objective of this study was to assess the prevalence of spinal segment variants and to study the potential association among these variants in an asymptomatic population. The results showed that the spinal segment variants are highly prevalent, ranging from 4.2% (cervical rib) to 26.4% (LSTV), and that these variants are associated with each other. The authors recommend further imaging for spine enumeration before interventions or operations when a spinal segment variant is identified.

  3. Desai, Amit

    1. EDITOR'S CHOICEUltra-High-Field MRI/Imaging of Epilepsy/Demyelinating Diseases/Inflammation/Infection
      Central Vein Sign in Multiple Sclerosis: A Comparison Study of the Diagnostic Performance of 3T versus 7T MRI
      Lela Okromelidze, Vishal Patel, Rahul B. Singh, Alfonso S. Lopez Chiriboga, Shengzhen Tao, Xiangzhi Zhou, Sina Straub, Erin M. Westerhold, Vivek Gupta, Amit K. Agarwal, John V. Murray, Amit Desai, S.J.S. Sandhu, I. Vanessa Marin Collazo and Erik H. Middlebrooks
      American Journal of Neuroradiology January 2024, 45 (1) 76-81; DOI: https://doi.org/10.3174/ajnr.A8083

      The perivenular relationship of MS demyelinating plaque is thought to represent one of the most histologically specific features of MS. In this retrospective study, the authors directly compared the utility of 3T SWI, 7T SWI, and T2&WI in detecting central vein sign (CVS) and the ability of CVS to differentiate MS from nonspecific WM lesions in patients without MS (presumed vascular origin) in a large cohort of patients. They found that 7T SWI and T2* (73% and 87% of lesions, respectively) showed significantly more CVSs than 3T (31%). Both T2*WI and 7T SWI sequences were 100% accurate (AUC=1.0) for diagnosing MS from WM lesions of presumed vascular origin, which was superior to 3T (AUC=0.975).

  4. Diehn, Felix E.

    1. Spine Imaging and Spine Image-Guided Interventions
      Application of a Denoising High-Resolution Deep Convolutional Neural Network to Improve Conspicuity of CSF-Venous Fistulas on Photon-Counting CT Myelography
      Ajay A. Madhavan, Jeremy K. Cutsforth-Gregory, Waleed Brinjikji, John C. Benson, Felix E. Diehn, Ian T. Mark, Jared T. Verdoorn, Zhongxing Zhou and Lifeng Yu
      American Journal of Neuroradiology January 2024, 45 (1) 96-99; DOI: https://doi.org/10.3174/ajnr.A8097

  5. Dillon, William P.

    1. EDITOR'S CHOICESpine Imaging and Spine Image-Guided Interventions
      Temporal Characteristics of CSF-Venous Fistulas on Dynamic Decubitus CT Myelography: A Retrospective Multi-Institution Cohort Study
      Andrew L. Callen, Mo Fakhri, Vincent M. Timpone, Ashesh A. Thaker, William P. Dillon and Vinil N. Shah
      American Journal of Neuroradiology January 2024, 45 (1) 100-104; DOI: https://doi.org/10.3174/ajnr.A8078

      This retrospective multi-institution cohort study analyzed the temporal features of CSF-venous fistula (CVF) visualization on dynamic decubitus CT myelography (dCTM) in 48 patients. The results showed that most CVFs were visible on first or subsequent phases of dCTM, but approximately 1 in 8 were only visible on either the early or delayed phase. The authors conclude that acquiring greater than 1 phase of imaging increases the sensitivity of dCTM by increasing its temporal resolution.

  6. Donato, Helena

    1. FELLOWS' JOURNAL CLUBNeurovascular/Stroke Imaging
      CTA and CTP for Detecting Distal Medium Vessel Occlusions: A Systematic Review and Meta-analysis
      João André Sousa, Anton Sondermann, Sara Bernardo-Castro, Ricardo Varela, Helena Donato and João Sargento-Freitas
      American Journal of Neuroradiology January 2024, 45 (1) 51-56; DOI: https://doi.org/10.3174/ajnr.A8080

      This systematic review and meta-analysis aimed to compare the diagnostic test accuracy for CTA and CTP in the detection of distal medium vessel occlusion. The study found consistent evidence for a higher sensitivity in detecting distal medium vessel occlusion, particularly in arteries beyond the M2 segment of MCA, with multiphase CTA or CTP compared with single-phase CTA.

  7. Duffin, James

    1. EDITOR'S CHOICENeurovascular/Stroke Imaging
      Open Access
      The Choroid Plexus as an Alternative Locus for the Identification of the Arterial Input Function for Calculating Cerebral Perfusion Metrics Using MRI
      Olivia Sobczyk, Ece Su Sayin, Julien Poublanc, James Duffin, Andrea Para, Joseph A. Fisher and David J. Mikulis
      American Journal of Neuroradiology January 2024, 45 (1) 44-50; DOI: https://doi.org/10.3174/ajnr.A8099

      MR imaging-based cerebral perfusion metrics can be obtained by tracing a contrast bolus through the brain microvasculature. The authors compared the calculated resting relative perfusion metrics obtained from the choroid plexus (CP) with those obtained from the middle cerebral artery (MCA) in healthy participants and patients with glioma. The findings of this study suggest that an arterial input function chosen from within the CP is comparable with one chosen from the MCA and may be an alternative, particularly when there is no suitable MCA location to interrogate.

    2. Neurovascular/Stroke Imaging
      Open Access
      Assessing Perfusion in Steno-Occlusive Cerebrovascular Disease Using Transient Hypoxia-Induced Deoxyhemoglobin as a Dynamic Susceptibility Contrast Agent
      Ece Su Sayin, James Duffin, Vittorio Stumpo, Jacopo Bellomo, Marco Piccirelli, Julien Poublanc, Vepeson Wijeya, Andrea Para, Athina Pangalu, Andrea Bink, Bence Nemeth, Zsolt Kulcsar, David J. Mikulis, Joseph A. Fisher, Olivia Sobczyk and Jorn Fierstra
      American Journal of Neuroradiology January 2024, 45 (1) 37-43; DOI: https://doi.org/10.3174/ajnr.A8068
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