Xiaochaihu Decoction comes from Shang Han Lun, which is a main formula for Shaoyang diseases. According to the principle of prescriptions corresponding to syndromes, the clinical application of modified Xiaochaihu Decoction for the treatment of swelling, pain, nausea, vomiting, bloating, and constipation after artificial total knee arthroplasty can achieve good efficacy.

Objective To investigate the imaging features of Ewing's sarcoma and primitive neuroectodermal tumor (ES and PNET) in sacrum.Methods Imaging data were retrospectively collected and reviewed in 17 patients with ES and PNET confirmed by pathology.X-ray was performed in all patients,CT scans in 13 patients,and MR scans in 10 patients.Results All lesions were detected solitary and lateral.X-ray and CT features were lytic bone destruction in 12 cases,2 of them with bone sclerosis; one patient showed diffuse sclerosis.Soft tissue mass in pelvic cavity can be seen in 11 cases,9 of them with adjacent large blood vessels invasive and 4 patients with sacroiliac joints invasive.On post-contrast images,mild enhancement was found in 8 cases,and 5 patients with marked enhancement.MR images showed intermediate signal intensity on T1WI in 8 cases and heterogeneous moderate to high signal intensity on T2WI/fat suppression in 10 cases.DWI showed high signal intensity in 4 cases.Unlike CT scan,contrastenhanced MR images showed significant enhancement in 7 cases.Conclusions Ewing's sarcoma and primitive neuroectodermal tumor (ES and PNET) in sacrum have some specific imaging features.Imaging examination could provide reliable evidence for clinical diagnosis.

Objective To investigate the value of three-dimensional speckle tracking imaging(3D-STI) in assessment of left ventricular regional systolic function in acute myocardial infarction model of dogs.Methods Left anterior descending (LAD) coronary artery was ligated in 24 adult beagle dogs.Longitudinal strain(LS) of every left ventricular segment before ligation and 180 min after ligation,and the time for acquisition and analysis were obtained using two-dimensional speckle tracking imaging (2D-STI) and 3D-STI.After the experiment,left ventricular myocardium were determined by TTC staining and divided into two groups:infarcted myocardial segments and non-infarcted myocardial segments.Results Experimental model of acute myocardial infarction was established successfully in 20 dogs.After ligation,both LS of 2D-STI and 3D-STI in infarcted myocardial segments were significantly lower (P ＜ 0.01).The time for acquisition and analysis of the images by 3D-STI were significantly shorter than that by 2D-STI (P ＜0.01).The area under the ROC curve of 3D-STI was larger than that of 2D-STI.A cut-off value of-12.56％ for LS of the 3D-STI had 77.9％ sensitivity and 88.2％ specificity in predicting acute myocardial infarction.Conclusions 3D-STI is a convenient,accurate method for evaluating left ventricular regional systolic function.