它是对选定感兴趣层面进行连续动态扫描，获得所选层面的每一像素的时间密度曲线，并通过数学模型处理得到：脑血流容量（cerebral blood volume，CBV）、脑血流流量（cerebral blood flow，CBF）、对比剂平均通过时间（mean transit time，MTT）、对比剂峰值时 …

Reduction of the cerebral blood volume (CBV) might be target. In finding ways to do so, one has to be able to measure CBV. Measurement of CBV is, however, difficult. Radio(99mTc-)labeled erythrocytes (99mTcRBC) single photon emission computer-aided tomography (SPECT) is one established method used for CBV measurement.

Single-photon emission computed tomography (SPECT) was used for the measurement of regional cerebral blood volume (CBV) and hematocrit (Hct) in normal healthy human volunteers (mean age 30 +/- 8 years). Regional cerebral red blood cell (RBC) volume and plasma volume were determined separately and th …

2020年9月24日 · Cerebral blood volume (CBV) (often relative CBV: see below) is one of the parameters generated by perfusion techniques (CT perfusion and MR perfusion). CBV is defined as the volume of blood in a given amount of brain tissue, most commonly milliliters of blood per 100 g of brain tissue 1.

In this article, we provide practical diagnostic algorithms that address frequently encountered conditions associated with CBC abnormalities including anemia, thrombocytopenia, leukopenia, polycythemia, thrombocytosis, and leukocytosis.

2021年3月19日 · Analysis of RBC velocity (V RBC) revealed a strong dependency between capillary and feed vessel V RBC in sepsis patients (R 2 = 0.63, p < 0.0001) but not in healthy controls (R 2 = 0.04, p = 0.43), indicating impaired capillary (de-)recruitment in sepsis.

1997年10月1日 · Kuhl et al 13 reported quantitative tomographic measurements of regional CBV in humans using 99m Tc-labeled RBC as a single-photon emitting tracer. They found CBV values ranging from 2 to 4 mL/100 g depending on anatomic location; higher values corresponded to regions of gray matter.

To evaluate the efficacy of tests for selecting patients with hemodynamic compromise, measurement of cerebral blood volume (CBV) with 99mTc-RBC single photon emission computed tomography (SPECT) was performed in thirteen patients with occlusive cerebrovascular disease, and was compared with results …

1999年7月1日 · Near-infrared spectroscopy (NIRS) is a technique that is increasingly being used for the noninvasive measurement of cerebral blood volume (CBV) in newborn...

We found excellent correlations between CBV dynamics in plasma (CBV plasma) and red blood cell (CBV rbc) at different depths of the cortex in the contralateral somatosensory region (S1), suggesting that either of these measures may be used for transients in total CBV (CBV total). Issues of CBV quantification for understanding the BOLD contrast ...