TY - JOUR
T1 - Correlation between proton magnetic resonance spectroscopic lactate measurements and vascular reactivity in chronic occlusive cerebrovascular disease
T2 - A comparison with positron emission tomography
AU - Mihara, Futoshi
AU - Kuwabara, Yasuo
AU - Yoshida, Tsuyoshi
AU - Yoshiura, Takashi
AU - Sasaki, Masayuki
AU - Masuda, Kouji
AU - Matsushima, Toshio
AU - Fukui, Masashi
N1 - Funding Information:
This work was supported in part by a Grant-in-Aid for Scientific Research (C2–12670880) from Japan Society for Promotion of Science.
PY - 2000
Y1 - 2000
N2 - The purpose of this study is to investigate the correlation between lactate levels and cerebral vascular reactivity (VR) in regions outside an area of chronic cerebral infarction. Multivoxel proton magnetic resonance spectroscopy (1H-MRS) and positron emission tomography (PET) were performed in 11 patients who suffered chronic cerebral infarction. Of these 11 patients, 4 were examined before and after bypass surgery. Two regions-of-interests (ROIs) were placed outside the area of chronic infarction. One ROI was placed within a control region on the contralateral side. A lactate peak area was obtained in all ROIs. An N-acetyl aspartate (NAA) peak area was obtained in the ROI within the control region. The ratio of the lactate peak area and NAA peak area (Lct/NAA) was calculated for normalization of the lactate level, and was found to be 0.13 ± 0.10 (range, 0 to 0.43). The VR was recorded at 13.3 ± 20.7% (range, - 44.3 to 68.9%), utilizing PET and administering acetazolamide. A significant negative correlation was observed between the Lct/NAA ratio and VR (r = - 0.709, p < 0.0001). These results suggest that lactate levels and VR are closely related in regions outside areas of chronic cerebral infarction. (C) 2000 Elsevier Science Inc.
AB - The purpose of this study is to investigate the correlation between lactate levels and cerebral vascular reactivity (VR) in regions outside an area of chronic cerebral infarction. Multivoxel proton magnetic resonance spectroscopy (1H-MRS) and positron emission tomography (PET) were performed in 11 patients who suffered chronic cerebral infarction. Of these 11 patients, 4 were examined before and after bypass surgery. Two regions-of-interests (ROIs) were placed outside the area of chronic infarction. One ROI was placed within a control region on the contralateral side. A lactate peak area was obtained in all ROIs. An N-acetyl aspartate (NAA) peak area was obtained in the ROI within the control region. The ratio of the lactate peak area and NAA peak area (Lct/NAA) was calculated for normalization of the lactate level, and was found to be 0.13 ± 0.10 (range, 0 to 0.43). The VR was recorded at 13.3 ± 20.7% (range, - 44.3 to 68.9%), utilizing PET and administering acetazolamide. A significant negative correlation was observed between the Lct/NAA ratio and VR (r = - 0.709, p < 0.0001). These results suggest that lactate levels and VR are closely related in regions outside areas of chronic cerebral infarction. (C) 2000 Elsevier Science Inc.
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U2 - 10.1016/S0730-725X(00)00216-2
DO - 10.1016/S0730-725X(00)00216-2
M3 - Article
C2 - 11118772
AN - SCOPUS:0034531862
SN - 0730-725X
VL - 18
SP - 1167
EP - 1174
JO - Magnetic Resonance Imaging
JF - Magnetic Resonance Imaging
IS - 9
ER -