Magnetic resonance imaging diagnosis and microsurgical treatment of cavernous sinus hemangiomas / 中国医学科学院学报

<p><b>OBJECTIVE</b>To summarize the magnetic resonance imaging(MRI)features and microsurgical treatment of cavernous sinus hemangiomas(CSH).</p><p><b>METHODS</b>Twenty-three patients with surgically and pathologically verified CSH were reviewed. All patients underwent computed tomography(CT)and MR scan, 19 cases underwent MR diffusion-weighted imaging(DWI)and 7 underwent single voxel (1)H magnetic resonance spectroscopy((1)HMRS)before operation. The microsurgery through modified pterional approach was performed in 11 cases and 12 cases removal was achieved in combined fronto-temporal preauricular subtemporal approach. Nineteen cases with large tumors were treated by Leksell Gamma knife(LGK)before operation.</p><p><b>RESULTS</b>CSHs were single, large, and spherical/lie gourd-shaped tumors across the inside and outside the sella. CSH showed equal or slightly low signal on T1WI, high signal on T2WI and FLAIR, homogeneous or heterogeneous great enhancement on MR enhancement scan 19 cases showed equal or slightly low signal on DWI, 7 cases showed no NAA, Cr, and Cho peak, and 6 cases showed Lip peak on (1)HMRS. In 23 cases, the tumors were totally removed in 18, subtotally removed in 3, and partially removed in 2. No perioperative death was reported. The postoperative symptoms were improved in 17 cases but remained unchanged in 4 cases two patients suffered from new nervous symptoms after the surgery, which were improved or cured after three weeks of treatment. In 5 patients who had received subtotal or partial removal of the lesions, LGK was performed postoperatively, which resulted in smaller residual tumors in 4 cases and unchanged tumor in one patient. CONCLUSIONS CSH has some unique MRI features, and therefore MRI is helpful to improve the preoperative localization and qualitative diagnosis. The microsurgery through modified pterional approach combined with fronto-temporal preauricular subtemporal approach is an effective procedure for CSH.</p>

Comparison of enhanced magnetic resonance and diffusion-weighted imaging for detection of hepatic metastases / 中国医学科学院学报

<p><b>OBJECTIVE</b>To compare the roles of Gd-EOB-DTPA-enhanced magnetic resonance imaging (MRI) using the liver acquisition with volume acceleration(LAVA) sequence and diffusion-weighted imaging(DWI) in the detection of hepatic metastases sized ≤3 cm.</p><p><b>METHODS</b>We retrospectively analyzed the MRI data of 16 patients with hepatic metastases. All the sequences used included T1WI, T2WI,3D-LAVA, and DWI (b value=500 s/mm(2)). All patients were divided into two groups based on the sequences: group A (T1WI, T2WI, and 3D-LAVA enhanced MR) and group B(T1WI,T2WI and DWI). The hepatic metastases were evaluated by analyzing the receiver operating characteristic (ROC) curves.</p><p><b>RESULTS</b>A total of 39 hepatic metastatic lesions were identified. The sensitivity, specificity, Youden index and the area under the ROC curve (AUC) were 97.4%, 88.2%, 0.856, and 0.944 in group A and 82.1%, 91.2%, 0.733, and 0.834 in group B. The ROC curves (p=0.040) and Youden index(p=0.043) in group A were significantly larger than in group B.</p><p><b>CONCLUSION</b>Gadolinium-EOB-DTPA-enhanced MRI has higher accuracy than DWI in the detection of small metastases.</p>

Spiral CT reconstruction for typing of tibial plateau fracture to guide surgical therapy / 中国骨伤

<p><b>OBJECTIVE</b>To typing of tibial plateau fracture based on spiral CT reconstruction and to explore effect of the typing method for treatment.</p><p><b>METHODS</b>A hundred and twenty-six cases with tibial plateau fracture (male 95, female 31, age from 23 to 58 years old), the fractures were classified based on reconstruction image of spiral CT. Including central compression type in 13 cases, split type in 8, split compression type in 79, comminution type in 26. According to the different typing the suitable incision of operation and fixed method for fracture were select.</p><p><b>RESULTS</b>A hundred and twenty-six cases were followed up for 0.5-4 years with an average of 1.2 years. According to Hohl system score to knee joint function, there were statistical significance in the pain,active movement,active range of motion between before and after operation (P < 0.01) and there were no statistical significance in stability and self-evaluation (P < 0.01).</p><p><b>CONCLUSION</b>Typing of tibial plateau fracture based on spiral CT reconstruction helpful to choose operative approach, reduction and fixed method and obviously improve clinical effect.</p>

Designing and implementation of a PACS / 中国医疗器械杂志

PACS (Picture Archiving and Communication System) is successfully applied in Huzhou Central Hospital, and is well integrated with its HIS system by WEBSERVICE middleware. The system supports DICOM 3.0 Standard, and DICOM gateways are installed for modalities that do not support DICOM so as to have implemented the digitalization of all the image departments in the hospital.