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more coincidence with ultrasound than SPECT. ConclusionsUltrasonography is a noninvasive method for assessing the effect of multiple burr-hole operation in patients with moyamoya disease.
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Objective To study the feasibility and characteristic findings of contrast-enhancedultrasound(CEUS)on peripheral pulmonary tumors.Methods Twenty patients with peripheral pulmonarytumors proven by pathology were studied.They were divided into two groups:primary pulmonary tumors (n=15),and metastatic pulmonary tumors(n=5). The dynamic enhancement images were stored and Strip enhancement was dominant in the primary pulmonary tumors,while dot enhancement was dominant in ascended quickly and descended slowly,while ascended slowly and descended slowly in majority of metastaticThe modes of enhancement and time-intensity curves were all different in primary and metastatic pulmonary tumors.Contrast-enhanced uhrasound is promising in the diagnosis of peripheral pulmonary tumors.
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Objective To evaluate the value of ultrasound in assessing superficial temporal arterymiddle cerebral artery(STA-MCA)anastomosis in patients with moyamoya disease.Methods Ultrasonic Doppler studies were made pre-and postoperatively in 25 patients with moyamoya disease undergoing STAMCA anastomosis.The peak systolic velocity(PSV),end diastolic velocity(EDV),pulsatility index(PI)and resistance index(RI)were measured in external carotidartery(ECA) and superficial temporal artery (STA)pre-and postoperatively.The pattern of the collateral circulation through the bypass was categorized based on postoperative external carotid angiograms.Thus three categories were determined as extensive,moderate and poor.The patients were divided into three groups based on the pattern of the collateral circulation through the bypass,which was determined based on the angiographic findings.PSV,EDV,PI,RI of STA was compared between groups.Results ①The values of the PSV,EDV of anastomosed STA were significantly higher and the values of PI,RI were significantly lower after operation.②The values of the PSV,EDV of the anastomosed ECA tended to be higher and the values of PI,RI tended to be lower in postoperation patients,but the differences were not significant within preoperation and postoperation group.③The Values of the PSV,EDV of the anastomosed STA were significantly different among the groups.The PSV.EDV tended to be higher and the PI,RI tended to be lower in patients with more extensive bypass flow.④The blood flow direction of STA was from extracranial to intracranial.Conclusions The PSV,EDV,PI,RI of STA can predicting the extent of collateral flow through an STA-MCA bypass.Color Doppler ultrasonography is a noninvasive method of assessing the function of STA-MCA bypass in patients with moyamoya disease.