Effects of antithrombotic pressure pump combined with graduated compression stocking on the incidence of lower extremity deep venous thrombosis in the postoperative breast cancer patients / 中国实用护理杂志

Objective To investigate the prevention effects of antithrombotic pressure pump combined with graduated compression stockings (GCS) on incidence of postoperative lower extremity deep venous thrombosis (LEDVT) in breast cancer patients. Methods A total of 363 cases of breast cancer patients after operation were divided into routine care group (124 cases) according to the method of random number table, pressure group (127 cases) and combined treatment group (112 cases). The routine care group received conventional LEDVT ankle pump exercises. The pressure group used GCS besides the routine intervention. The combined group received GCS and antithrombotic pressure pump besides the routine intervention. Then the levels of thrombosis markers, D-dimers,platelets, and incidences of LEDVT were examined in the three groups. Results Before operation, no significant differences between the levels of prothrombin time (PT), activated partial prothrombin time (APTT), thrombin time (TT), fibrinogen, plasma D-dimer and platelets (P>0.05). After operation, the levels of PT, APTT, TT, fibrinogen, plasma D-dimer and platelets in three groups were (10.22 ± 0.76) s, (27.24 ± 3.68) s, (14.60 ± 0.88) s, (2.94 ± 0.59) mg/L, (0.31 ± 0.21) mg/L, (288.48 ± 71.29) × 109/L, (10.73 ± 0.79) s, (27.35 ± 2.54) s, (14.71± 1.76) s, (4.12±1.09) mg/L, (0.46±0.38) mg/L, (284.26±70.98) ×109/L and (11.11±0.64) s、(28.52± 2.74) s, (14.33± 1.02) s, (4.42±1.20) mg/L, (0.35±0.33) mg/L, (258.79±62.35) ×109/L, respectively. There was significant difference among these groups (F=5.71-87.31, P<0.01). The differences on PT, APTT, fibrinogen and D-dimers between combined treatment group and routine care group were statistically significant (P<0.05). The differences on PT, fibrinogen and platelets between combined treatment group and pressure group were statistically significant (P<0.05). The differences on PT, APTT, fibrinogen and D-dimers between routine care group and pressure group were statistically significant (P<0.05). Through one months of follow-up, the incidence of LEDVT in routine care group, pressure group and combined treatment group were 12.10％(15/124),3.15％(4/127),0.89％(1/112), respectively. There was significant difference among these groups (χ2=16.279,P<0.01). Conclusions The application of antithrombotic pressure pump combined with GCS significantly improves the postoperative hypercoagulable states in breast cancer patients. The combined treatment reduces the incidence of LEDVT without bleeding risk. Therefore, antithrombotic pressure pump combined with GCS is recommended for clinical use in the postoperative breast cancer patients.

A magnetization transfer imaging study of bilateral optic radiation and visual cortex in patients with primary glaucom / 中华放射学杂志

Objective To analyse the changes in bilateral optic radiation and visual cortex in patients with primary glaucoma detected by magnetization transfer imaging ( MTI ),and try to explore the influence of the disease on posterior visual pathway.Methods MTI was performed in 20 patients with primary glaucoma with normal signal on conventional magnetic resonance imaging (MRI).The same scanning was performed in 31matched healthy controls.MTI was obtained using spoiled gradient recalled acquisition sequence (SPGR).Magnetization transfer ratio ( MTR ) of bilateral optic radiation and visual cortex was measured after post-processing.The MTR value differences of the same area between two groups were compared by independent-sample t test or Satterthwaite t test if variances were not equality.Result The MTR value in the left and right optic radiation were ( 32.8 ± 2.2 ) ％ and ( 32.7 ± 2.0 ) ％ in the glaucoma group,(34.6 ± 1.4 )％ and (34.8 ± 1.3 )％ in the control group.There was a statistically significant difference between the two groups (left t =3.284,right t =4.040 ;P ＜ 0.01).The MTR value of the left and right visual cortex were ( 30.1± 2.0 ) ％ and ( 30.8 ± 1.8 ) ％ in the glaucoma goup,and (32.3 ± 1.2 )％ and (32.4 ± 1.2 )％ in the control group.Statistically significant difference was found between the two groups ( left t =4.319,right t =3.445 ;P ＜ 0.01).Conclusions Potential neuropathology changes occurring in the posterior visual pathway of patients with glaucoma indicate that the whole visual pathway may be involved by glaucoma.The micro physiological changes can be detected by MTI which can not be found by conventional MRI.It is a useful method of studying trans-synaptic damage of visual pathway n vivo glaucoma which provides more information for guiding the clinic diagnosis,cure and prognosis of glaucoma.

Intravesical Electric Stimulation on Bladder Sensation of Neurogenic Bladder / 中国康复理论与实践

@#ObjectiveTo observe the effects of intravesical electric stimulation (IVES) on bladder sensation of neurogenic bladder.Methods28 patients with neurogenic bladder was evaluated, which all underwent intravesical bladder stimulation. Their bladder sensation were analyzed before and after the treatment.Results57.1% of the patients increased bladder sensation after treatment, 32.1% appeared the first sensation and urge sensation after treatment, 42.9% remained stable.ConclusionIntravesical bladder stimulation is effective to improve bladder sensation in a majority of the patients with neurogenic bladder.

Design and implementation of a new type excitation source and the optimal excitation coil for MIT / 生物医学工程学杂志

This research work was aimed to improve the performance of magnetic induction tomography (MIT) system by designing a high-performance excitation source and the optimal excitation coil. A new type excitation source with adjustable output was designed, and then the power circuit was simulated by the software ICPA. Focused and solenoid coils were designed in accordance with the design principle of coil, then the optimal excitation coil was proved by measuring the magnetic field distribution and the experimentation of phase detection using neuron cell models. At the stated excitation frequency, the parameters of the excitation source are output power 0.035 W-31.4 W, steady output peak current over 1 A, frequency stability 10(-9), and THD amplitude less than -51dB. When compared with other coils, the focused discal excitation coil is most effective for phase detection with the use of neuron cell models. The excitation source can produce the stated frequency sine wave with higher frequency stability, lower THD and wider adjustable output power. The phase difference between normal cell model and edema cell model was more significant by measurement using focused discal coil.

MRI Features of Dysembryoplastic Neuroepithelial Tumor / 实用放射学杂志

Objective To investigate MRI features of dysembryoplastic neuroepithelial tumor(DNT).Methods The MR images of ten cases with surgically and pathologically proved DNT were retrospectively reviewed.Results MR imaging showed cystic component with mural nodule in 6,mainly cystic component with septa in 3.The solid components of the tumors were long T_1 and long T_2 signal intensity,the cystic components were even longer T_1 and T_2 signal intensity which resembled the signal of cerebrospinal fluid.Mild enhancement could be found at the intra-tumoral solid nodule or septations after injection of constrast medium but the cystic component did not show any enhancement.No peri-tumoral edema and mass effect were found in most cases.Conclusion DNTs are of some special features on the MR images,the diagnosis can be exactly done before operation if MRI features in combination with clinical data of the patients.

Study on technique of phase detection in magnetic induction tomography / 医疗卫生装备

In the magnetic induction tomography(MIT) system,the electrical conductivity of biological tissue is direct proportion to the phase difference between the excitation signal and the detection signal.To obtain the image of the contribution of tissue's electrical conductivity,the system must have the function of phase detection with high accuracy.The paper focuses on the means of digital phase detection,including FFT method,the correlation method and the classic method,which are ultimately compared with analogue phase detection method.The experimental results show that FFT method and the correlation method,with low error level and high linearity,can better detect the phase difference with the level of 0.1?.The digital phase difference detection provides a kind of effective method for MIT system.