3. QUANTITATIVE MEASUREMENT OF CBF WITH RADIONUCLIDE

Atraumatic CBF Measurement With the Scintillation Camera

A scintillation camera connected to a dedicated computer system was employed for atraumatic CBF measurements in 43 patients after intravenous injection of 35 to 55 raCi Xe in saline solution. To validate this method results were compared to flow values in the same patients measured after intracarotid Xe injection. While the correlation between i.e. and i.v. values was not satisfactory when a hi...

What is the meaning of quantitative CBF?

Quantitative basal CBF and CBF fMRI of rhesus monkeys using three-coil continuous arterial spin labeling.

A three-coil continuous arterial-spin-labeling technique with a separate neck labeling coil was implemented on a Siemens 3T Trio for quantitative cerebral blood flow (CBF) and CBF fMRI measurements in non-human primates (rhesus monkeys). The optimal labeling power was 2 W, labeling efficiency was 92+/-2%, and optimal post-labeling delay was 0.8 s. Gray matter (GM) and white matter (WM) were seg...

The prognostic value of noninvasive CBF measurement in subarachnoid hemorrhage.

Seventy-four measurements of cerebral blood flow (CBF) were performed using the Xenon 133 inhalation method in 50 cases of spontaneous subarachnoid hemorrhage. This method is non-traumatic, reproducible and dependable. A correlation was found between clinical condition and CBF values, but in a number of cases which cannot be dismissed, very low mean CBF values or ischemic foci were revealed whe...

Validation of CBF measurement with non-invasive microsphere method (NIMS) compared with autoradiography method (ARG).

The purpose of this study is to examine the correlation of measured regional cerebral blood flow (rCBF) by means of a new microsphere method (non-invasive microsphere method), to the autoradiography (ARG) method, which is an established quantification method for 123I-IMP brain SPECT. The non-invasive microsphere (NIMS) method and ARG method were simultaneously applied to 30 patients, and quanti...