Novel brain SPECT imaging unravels abnormal cerebral perfusion in patients with postural orthostatic tachycardia syndrome and cognitive dysfunction. - Seeley, Marie-Claire; O'Brien, Howard; Wilson, Gemma; Coat, Clair; Smith, Tess; Hickson, Kevin; Casse, Reynold; Page, Amanda J.; Gallagher, Celine; Lau, Dennis H. (Scientific Reports, 2025)