Journal of International Oncology ›› 2020, Vol. 47 ›› Issue (9): 550-554.doi: 10.3760/cma.j.cn371439-20200603-00076

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Value of 3D-ASL, MRS and DTI in the diagnosis and treatment of radiation-induced temporal lobe injury of nasopharyngeal carcinoma

Yang Minghui1, Jin Feng2()   

  1. 1Clinical Medical College of Guizhou Medical University, Guiyang 550000, China
    2Department of Head and Neck Oncology, Affiliated Cancer Hospital of Guizhou Medical University, Guizhou Cancer Hospital, Guiyang 550000, China
  • Received:2020-06-03 Revised:2020-07-20 Online:2020-09-08 Published:2020-10-27
  • Contact: Jin Feng E-mail:jinf8865@yeah.net
  • Supported by:
    Guizhou Science and Technology Planning Project(〔2017〕2880,〔2018〕2755)

Abstract:

Radiotherapy is the main treatment of nasopharyngeal carcinoma (NPC). With the continuous improvement of radiotherapy technology, the survival time of NPC patients is significantly improved, but the complications after radiotherapy have been paid more and more attention, in which the incidence of radiation-induced temporal lobe injury is higher, which seriously affects the quality of life of patients, and even reduces the survival rate. Therefore, it is particularly important to find a method for the examination of early radiation-induced temporal lobe injury. Three-dimensional arterial spin labeling (3D-ASL) analysis of cerebral blood flow (CBF) changes before and after radiotherapy, magnetic resonance spectroscopy (MRS) analysis to determine the changes of NAA/Cr, Cho/NAA, Cho/Cr ratio in the anterior and posterior temporal lobe before and after radiotherapy, and diffusion tensor imaging (DTI) to determine the changes of temporal lobe average diffusion coefficient (ADC) and anisotropy fraction (FA) before and after radiotherapy can help in the early diagnosis of radiation brain injury, especially through the combined use of the above three tests. It is expected to provide a feasible basis for the early diagnosis of radiation encephalopathy, and early nutritional neurotherapy is of great significance to improve the quality of life and survival rate of patients.

Key words: Magnetic resonance imaging, Nasopharyngeal neoplasms, Therapy, Radioactive temporal lobe damage