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Gray matter volume deficits have been identified in cognitively impaired patients with chronic obstructive pulmonary disease (COPD). However, it remains unknown whether the gray matter volume is altered in COPD patients with subclinical cognitive impairment. To determine whether any gray matter abnormalities are present in these patients, neuropsychological(More)
Hepatic perfusion parameters play an important role in detecting and diagnosing diffusion diseases of liver. Based on a hemodynamic model. In this study, we described a fast and accurate method to calculate the perfusion parameters. First, we used a dual-input one-compartment kinetics model to illustrate the distribution of the contrast agent concentration(More)
OBJECTIVE To explore the CT angiography features of the involved arterial branches of the spontaneous isolated superior mesentery artery dissection(SISMAD). METHODS Clinical and CT angiogram data of 6 patients with SISMAD confirmed by dual source energy CT angiography were analyzed retrospectively. The CT angiography features and prognosis of patients(More)
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