Nihon rinsho. Japanese journal of clinical medicine
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Many problems arise from homologous blood transfusion in operative patients. The virtues include reduced likelihood of reactions to transfused blood and reduction or elimination of the risk of alloimmunization and transfusion transmitted diseases such as hepatitis C and the human immunodeficiency virus. ⋯ Preoperative collection of blood with hemodilution is a simple method to allow autologous blood transfusion. To have recourse to apheresis techniques allows to increase the number of autologous transfused patients.
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Multi-slice proton magnetic resonance spectroscopic imaging(MRSI) was performed using a 1.5 T clinical MR apparatus. Normal volunteer and several kinds of cerebral disorders were examined using following parameters; Tr/Te = 2.3 s/280 ms, slice thickness/gap/slices = 15/3.5 mm/4, 32 phase encoding and 24 cm FOV. Every 4 slice images of NAA, Cr, Cho and Lip/Lac were obtained in about 34 minutes. ⋯ In cerebral infarction and brain tumor, though NAA images showed no signal intensity, Cr and Cho images showed small iso-or mild high-signal intensity areas. These findings suggest neuronal loss and gliosis or tumor growth in the lesions. In conclusion, MRSI has extremely high potential to evaluate metabolism of brain and cerebral disorders.