[1] Phipps MS, Cronin CA. Management of acute ischemic stroke. BMJ. 2020;368:l6983.
[2] National Institute of Neurological D, Stroke rt PASSG. Tissue plasminogen activator for acute ischemic stroke. N Engl J Med. 1995;333:1581-7.
[3] Saver JL, Goyal M, van der Lugt A, Menon BK, Majoie CB, Dippel DW, et al. Time to Treatment With Endovascular Thrombectomy and Outcomes From Ischemic Stroke: A Metaanalysis. JAMA. 2016;316:1279-88.
[4] Warren DJ, Musson R, Connolly DJ, Griffiths PD, Hoggard N. Imaging in acute ischaemic stroke: essential for modern stroke care. Postgrad Med J. 2010;86:409-18.
[5] Srinivasan A, Goyal M, Al Azri F, Lum C. State-of-the-art imaging of acute stroke. Radiographics. 2006;26 Suppl 1:S75-95.
[6] Rindler RS, Allen JW, Barrow JW, Pradilla G, Barrow DL. Neuroimaging of Intracerebral Hemorrhage. Neurosurgery. 2020;86:E414-E23.
[7] Powers WJ, Rabinstein AA, Ackerson T, Adeoye OM, Bambakidis NC, Becker K, et al. Guidelines for the Early Management of Patients With Acute Ischemic Stroke: 2019 Update to the 2018 Guidelines for the Early Management of Acute Ischemic Stroke: A Guideline for Healthcare Professionals From the American Heart Association/American Stroke Association. Stroke. 2019;50:e344-e418.
[8] Arimitsu T, Di Chiro G, Brooks RA, Smith PB. White-gray matter differentiation in computed tomography. J Comput Assist Tomogr. 1977;1:437-42.
[9] Oh JH, Choi SP, Wee JH, Park JH. Inter-scanner variability in Hounsfield unit measured by CT of the brain and effect on gray-to-white matter ratio. Am J Emerg Med. 2019;37:680-4.
[10] Noguchi K, Itoh T, Naruto N, Takashima S, Tanaka K, Kuroda S. A Novel Imaging Technique (X-Map) to Identify Acute Ischemic Lesions Using Noncontrast Dual-Energy Computed Tomography. J Stroke Cerebrovasc Dis. 2017;26:34-41. (Epub: Sep 14, 2016)
[11] Mohammed MF, Marais O, Min A, Ferguson D, Jalal S, Khosa F, et al. Unenhanced DualEnergy Computed Tomography: Visualization of Brain Edema. Invest Radiol. 2018;53:63-9.
[12] Grams AE, Djurdjevic T, Rehwald R, Schiestl T, Dazinger F, Steiger R, et al. Improved visualisation of early cerebral infarctions after endovascular stroke therapy using dual-energy computed tomography oedema maps. Eur Radiol. 2018;28:4534-41.
[13] Yu L, Primak AN, Liu X, McCollough CH. Image quality optimization and evaluation of linearly mixed images in dual-source, dual-energy CT. Med Phys. 2009;36:1019-24.
[14] Tseng HW, Fan J, Kupinski MA, Sainath P, Hsieh J. Assessing image quality and dose reduction of a new x-ray computed tomography iterative reconstruction algorithm using model observers. Med Phys. 2014;41:071910.
[15] Barrett HH, Myers KJ, Hoeschen C, Kupinski MA, Little MP. Task-based measures of image quality and their relation to radiation dose and patient risk. Phys Med Biol. 2015;60:R1-75.
[16] Abbey CK, Barrett HH. Human- and model-observer performance in ramp-spectrum noise: effects of regularization and object variability. J Opt Soc Am A Opt Image Sci Vis. 2001;18:473- 88.
[17] Itoh T, Noguchi K. Evaluation of the quantitative performance of non-enhanced dual-energy CT X-map in detecting acute ischemic brain stroke: A model observer study using computer simulation. Phys Med. 2022;104:85-92.
[18] Petersilka M, Stierstorfer K, Bruder H, Flohr T. Strategies for scatter correction in dual source CT. Med Phys. 2010;37:5971-92.
[19] Schmidt B, Flohr T. Principles and applications of dual source CT. Phys Med. 2020;79:36- 46.
[20] Erath J, Voth T, Maier J, Fournie E, Petersilka M, Stierstorfer K, et al. Deep learning-based forward and cross-scatter correction in dual-source CT. Med Phys. 2021;48:4824-42.
[21] Woodard HQ, White DR. The composition of body tissues. Br J Radiol. 1986;59:1209-18.
[22] Kanal KM, Butler PF, Sengupta D, Bhargavan-Chatfield M, Coombs LP, Morin RL. U.S. Diagnostic Reference Levels and Achievable Doses for 10 Adult CT Examinations. Radiology. 2017;284:120-33.
[23] Paulo G, Damilakis J, Tsapaki V, Schegerer AA, Repussard J, Jaschke W, et al. Diagnostic Reference Levels based on clinical indications in computed tomography: a literature review. Insights Imaging. 2020;11:96.
[24] Stierstorfer K, Rauscher A, Boese J, Bruder H, Schaller S, Flohr T. Weighted FBP--a simple approximate 3D FBP algorithm for multislice spiral CT with good dose usage for arbitrary pitch. Phys Med Biol. 2004;49:2209-18.
[25] Bongers MN, Schabel C, Krauss B, Tsiflikas I, Ketelsen D, Mangold S, et al. Noiseoptimized virtual monoenergetic images and iodine maps for the detection of venous thrombosis in second-generation dual-energy CT (DECT): an ex vivo phantom study. Eur Radiol. 2015;25:1655-64.
[26] Efron B, Tibshirani R. The Bootstrap Method for Assessing Statistical Accuracy. Behaviormetrika. 1985;12:1-35.
[27] Dzialowski I, Klotz E, Goericke S, Doerfler A, Forsting M, von Kummer R. Ischemic brain tissue water content: CT monitoring during middle cerebral artery occlusion and reperfusion in rats. Radiology. 2007;243:720-6.
[28] Grotta JC, Chiu D, Lu M, Patel S, Levine SR, Tilley BC, et al. Agreement and variability in the interpretation of early CT changes in stroke patients qualifying for intravenous rtPA therapy. Stroke. 1999;30:1528-33.
[29] Wardlaw JM, Dorman PJ, Lewis SC, Sandercock PA. Can stroke physicians and neuroradiologists identify signs of early cerebral infarction on CT? J Neurol Neurosurg Psychiatry. 1999;67:651-3.
[30] Wardlaw JM, Mielke O. Early signs of brain infarction at CT: observer reliability and outcome after thrombolytic treatment--systematic review. Radiology. 2005;235:444-53.
[31] Finlayson O, John V, Yeung R, Dowlatshahi D, Howard P, Zhang L, et al. Interobserver agreement of ASPECT score distribution for noncontrast CT, CT angiography, and CT perfusion in acute stroke. Stroke. 2013;44:234-6.
[32] Coutts SB, Lev MH, Eliasziw M, Roccatagliata L, Hill MD, Schwamm LH, et al. ASPECTS on CTA source images versus unenhanced CT: added value in predicting final infarct extent and clinical outcome. Stroke. 2004;35:2472-6.
[33] Lev MH, Farkas J, Gemmete JJ, Hossain ST, Hunter GJ, Koroshetz WJ, et al. Acute stroke: improved nonenhanced CT detection--benefits of soft-copy interpretation by using variable window width and center level settings. Radiology. 1999;213:150-5.
[34] Potter CA, Sodickson AD. Dual-Energy CT in Emergency Neuroimaging: Added Value and Novel Applications. Radiographics. 2016;36:2186-98.
[35] Naruto N, Tannai H, Nishikawa K, Yamagishi K, Hashimoto M, Kawabe H, et al. Dualenergy bone removal computed tomography (BRCT): preliminary report of efficacy of acute intracranial hemorrhage detection. Emerg Radiol. 2018;25:29-33.
[36] Flohr T, Petersilka M, Henning A, Ulzheimer S, Ferda J, Schmidt B. Photon-counting CT review. Phys Med. 2020;79:126-36.
[37] Lillie EM, Urban JE, Lynch SK, Weaver AA, Stitzel JD. Evaluation of Skull Cortical Thickness Changes With Age and Sex From Computed Tomography Scans. J Bone Miner Res. 2016;31:299-307.
[38] Mangesius S, Janjic T, Steiger R, Haider L, Rehwald R, Knoflach M, et al. Dual-energy computed tomography in acute ischemic stroke: state-of-the-art. Eur Radiol. 2021;31:4138-47.
[39] Lell MM, Wildberger JE, Alkadhi H, Damilakis J, Kachelriess M. Evolution in Computed Tomography: The Battle for Speed and Dose. Invest Radiol. 2015;50:629-44.
[40] Alagic Z, Diaz Cardenas J, Halldorsson K, Grozman V, Wallgren S, Suzuki C, et al. Deep learning versus iterative image reconstruction algorithm for head CT in trauma. Emerg Radiol. 2022;29:339-52.
[41] Faby S, Kuchenbecker S, Sawall S, Simons D, Schlemmer HP, Lell M, et al. Performance of today's dual energy CT and future multi energy CT in virtual non-contrast imaging and in iodine quantification: A simulation study. Med Phys. 2015;42:4349-66.