The PLA 309th Hospital

Beijing, China

The PLA 309th Hospital

Beijing, China
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Zheng G.,The PLA 309th Hospital | Zhao X.,The PLA 309th Hospital
Chinese Journal of Rehabilitation Medicine | Year: 2011

Objective: To observe the influence of neuromuscular electrical stimulation (NMES) of musculs quadriceps femoris on motor function rehabilitation after total knee replacement (TKR). Method: One hundred and four patients who underwent TKR were randomized into treatment group NMES musculus quadriceps femoris sombined with active extension of knee and control group treated with transcutaneous electrical nerve stimulation (TENS) on the pain points of knee, while all patients also received standard physiotherapy about 2 weeks. All patients were assessed with both subjective and objective clinical scales about 2 weeks postoperatively. Average duration of follow-up for the 104 patients was 9.5 months (range 4-16 months). Result: There was no significant difference in visual analogue scale (VAS) pain scores and knee active range of motion (AROM) between the two groups (P>0.05). The limited knee extension angle was significantly less in treatment group (1.93°±3.47°) than that in control group (6.26°±4.28°) (P<0.01) and the knee injury and osteoarthritis outcome score (KOOS) score was significantly higher in treatment group (71.52±10.97) than that in control group (65.02±10.26) (P<0.01) at 2 weeks postoperatively. However, at follow-up there was no significant difference in the knee society score (KSS) of both groups were at excellent level, but (P>0.05). The KOOS score in treatment group (96.16±2.96) was significantly higher than that in control one (94.04±4.80) (P<0.01). Conclusion: NMES stimulation on musalus quadriceps femoris in addition to conventional physiotherapy can improve functional recovery and accerelate early motor function rehabilitation after TKR.


Zhang Y.,The PLA 309th Hospital
Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation | Year: 2010

To measure the imaging dose in the head phantom by different image-guided methods. The imaging dose was measured in a cylindrical phantom on a Varian Clinac iX linear accelerator equipped with EPID, OBI, CBCT using a PTW 0.6 cc ion chamber with UNIDOS E dosimeter. 2D images were acquired by two perpendicular fields (0 degrees & 270 degrees), and the 3D images by CBCT. The 2D imaging average dose for OBI (KV X-ray) was 0.74 mGy in the head phantom. It was significantly lower than 90.93 mGy for EPID (MV X-ray) and the image quality was better. For a standard CBCT (KV X-ray), the imaging average dose was 4.77 mGy. For a low dose mode, the imaging dose was 50% of the standard mode. Moreover, 3D images could match accurately. For the OBI system, the imaging dose is lower and image quality is better than EPID. The 3D image-guided method for CBCT is better than 2D and is also safe for daily position verification. Therefore, during treatment positioning, the appropriate image-guide methods and scanning parameters can effectively reduce the additional dose to the patients.


Zhang Y.,The PLA 309th Hospital
Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation | Year: 2010

To research the method of dosimetric verification of the intensity modulated radiation therapy (IMRT). The IMRT treatment plans were designed by Eclipse TPS and were implemented in Varian ClinacIX LA with 6MV X-ray. The absolute point doses were measured using a PTW 0.6 cc ion chamber with UNIDOS E dosimeter and the planes dose distributions were measured using PTW 2D-Array ion chamber in the phantom. The error between the measured dose and calculated dose in the interesting points was less than 3%. The points passed ratio was more than 90% in gamma analysis method (3 mm 13%) about the plane dose distribution verification. The method of dosimetric verification of IMRT is reliable and efficient in the implementation.


PubMed | The PLA 309th Hospital
Type: Journal Article | Journal: Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation | Year: 2010

To research the method of dosimetric verification of the intensity modulated radiation therapy (IMRT).The IMRT treatment plans were designed by Eclipse TPS and were implemented in Varian ClinacIX LA with 6MV X-ray. The absolute point doses were measured using a PTW 0.6 cc ion chamber with UNIDOS E dosimeter and the planes dose distributions were measured using PTW 2D-Array ion chamber in the phantom.The error between the measured dose and calculated dose in the interesting points was less than 3%. The points passed ratio was more than 90% in gamma analysis method (3 mm 13%) about the plane dose distribution verification.The method of dosimetric verification of IMRT is reliable and efficient in the implementation.

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