Abstract: The physiological function of kidneys in the elderly population decreases with aging. Meanwhile, the aging population is highly susceptible to acute kidney injury (AKI) during the progression and diagnosis and treatment of other diseases. At present, the clinical diagnosis of renal lesions mainly depends on pathology, but renal biopsy is difficult to repeat and sampling is one-sided, and for elderly patients, there are existing comorbidities that make perioperative management difficult. As one of the highlight topics in the research of medical imaging, multimodal functional magnetic resonance imaging is of great significance in distinguishing the pathological and physiological characteristics of kidney diseases and predicting prognosis. This article reviews the research progress of multimodal functional magnetic resonance imaging in AKI in the elderly.

Key words: functional magnetic resonance imaging, acute kidney injury, geriatrics, kidney histopathology, prediction