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Hemisphere cross talk and signal overlapping in bilateral regional cerebral blood flow measurements using xenon 133.

作者信息

Bolmsjö M

出版信息

Eur J Nucl Med. 1984;9(1):1-5. doi: 10.1007/BF00254341.

DOI:10.1007/BF00254341
PMID:6698059
Abstract

In bilateral regional cerebral blood flow measurements with xenon 133, Compton scatter and hemispheric cross talk obscure the regional resolution and increase the uncertainty of the results. In order to evaluate the effects of these extraregional signal sources on the calculation of regional gray matter blood flow, a computerized simulation procedure was developed. Using the depth-response of a rCBF detector in combination with a computer model of the human brain, it was possible to calculate the signal contributions from different regions in the brain. The results obtained show that large errors may be introduced in the calculation of regional gray matter blood flow when flow asymmetries exist.

摘要

相似文献

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Hemisphere cross talk and signal overlapping in bilateral regional cerebral blood flow measurements using xenon 133.
Eur J Nucl Med. 1984;9(1):1-5. doi: 10.1007/BF00254341.
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引用本文的文献

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CBF side-to-side asymmetries in stenosis-occlusion of internal carotid artery. Relevance of CT findings and collateral supply.

本文引用的文献

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Attenuation coefficients of various body tissues, fluids, and lesions at photon energies of 18 to 136 keV.18至136千电子伏特光子能量下各种人体组织、液体和病变的衰减系数。
Radiology. 1975 Dec;117(3 Pt 1):573-83. doi: 10.1148/117.3.573.
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Application of lateral counting corrections when measuring cerebral blood flow.测量脑血流量时横向计数校正的应用。
Phys Med Biol. 1978 Nov;23(6):1130-40. doi: 10.1088/0031-9155/23/6/009.
9
Compensating for hemisphere cross-talk when measuring CBF.测量脑血流量时补偿半球间串扰。
Acta Neurol Scand Suppl. 1977;64:470-1.