Evaluation of tear film and meibomian gland function in dry eye patients using Keratograph 5M / 浙江大学学报·医学版

To assess the application of Keratograph 5M in evaluating tear film and meibomian gland function in patients with dry eye.A total of 144 eyes were recruited in the study, in which 72 eyes were from patients diagnosed with dry eye and 72 eyes were from healthy subjects. All subjects finished following tests or examinations:ocular surface disease index (OSDI) to evaluate eye symptoms; Keratograph 5M examination to obtain tear meniscus height (TMH), noninvasive tear break-up time (NIBUT) including first NIBUT (NIBUT-Fir) and average NIBUT (NIBUT-Ave), and infrared meibography; and fluorescein sodium staining to obtain fluorescein tearbreak-up time (FBUT).Dry eye group had higher OSDI score than healthy control group, but its TMH, NIBUT-Fir and NIBUT-Ave were lower than those in healthy control group (all<0.01). Total meiboscore in dry eye group was higher than that in healthy control group (<0.01), and it showed a significant correlation with NIBUT-Fir and NIBUT-Ave (=-0.449 and -0.398,<0.01), but no correlation with ages was observed (=0.031,>0.05). The NIBUT-Fir and NIBUT-Ave showed a significant correlation with FBUT (=0.833 and 0.727,<0.01).Keratograph 5M is a convenient, accurate and non-invasive method to assess the function of tear film and meibomian gland, and the new meibography scoring system can evaluate the function of meibomian gland objectively and succinctly.

Evaluation of an optimization method for Eclipse IMRT plan for upper esophageal carcinoma / 中华放射医学与防护杂志

Objective To evaluate the dosimetric characteristics of base dose plan compensation (BDPC) optimization method applied on the intensity-modulated radiotherapy (IMRT) for upper esophageal carcinoma,based on the Eclipse treatment planning system.Methods Nineteen patients were included.For each case initial IMRT plan was generated and further optimized respectively by the two following methods:the BDPC method and hot and cold spot control (HCSC) method.Then the BDPC and HCSC plans were compared concerning planning-target-volume (PTV) coverage,conformity index (CI),and homogeneity index (HI),as well as organ-at-risk (OAR) sparing,planning time,monitor unit (MU) and delivery time.Results Compared with the HCSC plans,the BDPC plans provided superior CI and HI (Z =-3.662,-3.745,P ＜ 0.05),as well as lower D2％ (near-maximum dose) (Z =-3.823,P ＜ 0.05) and comparable D98％ (near-minimum dose) (P ＞ 0.05) for PTV64 (high-risk PTV),and provided superiorCI (Z=-3.340,P＜0.05),lower D95％ and D98％ (Z=-3.582,-2.616,P＜0.05) for PTV54 (low-risk PTV).The BDPC plans also provided slightly lower doses to the spinal cord and lung compared with the HCSC plans (Z =-3.625--3.369,P ＜ 0.05).Moreover,the planning time [(26.05 ±0.88) min] for BDPC plans was less than that of the HCSC plans [(33.73 ± 3.24) min] (Z =-3.823,P ＜0.05).The MU of the BDPC plans (1 019 ± 167) was higher than that of the HCSC plans (1 003 ±159) (Z=-2.616,P＜0.05),while the delivery time [(3.52 ±0.29) min] was more than that of the HCSC plans [(3.50±0.28) min] (Z=-2.548,P＜0.05).Conclusions The BDPC optimization method can significantly improve target dose homogeneity and conformity with effective reduction of the dose to OARs for upper esophageal carcinoma.Moreover,it is simple and can improve the treatment planning efficiency.

Prognostic value of lymph node status evaluated by computed tomography for patients with cervical cancer treated with radical chemoradiation therapy / 肿瘤研究与临床

Objective To investigate the prognostic value of lymph node status evaluated by computed tomography (CT) in cervical carcinoma treated with radical chemoradiation therapy.Methods 209 patients with FIGO stage Ⅰ B-ⅣA uterine cervical carcinoma treated with radical chemo radiation therapy were enrolled.Lymph node status was evaluated based on site,number and size respectively by CT.Kaplan-Meier method was used to analyze the impact of lymph node status as well as other pathoclinical factors on overall survival (OS).Cox regression model was used to explore the relationship between independent prognostic factors and OS.Results Lymph node metastasis rates for stage Ⅰ B,Ⅱ,Ⅲ and ⅣA patients were 16.7 ％ (1/6),48.2 ％ (68/141),57.4 ％ (31/54) and 87.5 ％ (7/8),respectively.Variate analysis showed that FIGO stage,anemia before treatment,para-aortic lymph node metastasis,and the number (≥3) and size (maximum diameter ≥ 2.0 cm) of CT positive lymph node were significant unfavorable prognostic factors for OS (P ＜ 0.05).FIGO stage,the number of lymph nodes metastasis,pathologic diagnosis and treatment regimen were identified to be independent prognostic factors in multivariate analysis.Conclusion Under current therapeutic strategy of concomitant chemoradiotherapy,lymph node metastatic status evaluated by pretreatment CT is still a significant and independent prognostic factor for cervical cancer.

Preliminary research of docetaxel plus cisplatin regimen with concurrent intensity-modulated radiation therapy in treating locally advanced nasopharyngeal carcinoma / 肿瘤研究与临床

ObjectiveTo assess the feasibility and efficacy of a docetaxel plus cisplatin regimen for patients of locally advanced nasopharyngeal carcinoma(NPC)treated concurrently with definitive IMRT in a short-term observation.MethodsRadiation consisted of 7000 cGy given to the planning target volume (PTV) of primary tumor, 6600 cGy given to the PTV of metastatic lymph nodes and 6000 cGy to the PTV of subclinical disease in 220-228 cGy/fraction were delivered over 31-32 treatment days. Thirty-two patients with newly diagnosed NPC received definitive intensity-modulated radiation therapy(IMRT)concurrent with docetaxel 75 mg/m2 on day 1 and DDP 75 mg/m2 on day 1(or DDP 25 mg/m2 on day 1-day 3), repeating every 21 to 28 days for 2 cycles.ResultsAll patients received the full dose of radiotherapy and completed 2 cycles of chemotherapy with a median follow-up of 13 months (2-28 months).No treatment-related death was observed. Major toxicities included hematologic toxicity and mucositis. The incidence rates of grade 3-4 leucopenia,grade 3-4 neutropenia and grade 3 acute mucositis were 46.9 ％ (15/32),59.4 ％ (19/32) and 40.6 ％ (13/32) respectively.The complete remission (CR) rate was 96.9 ％ (31/32).During treatment,90.6 ％ (29/32)patients acquired granulocyte colony stimulating factor (G-CSF)for leucopenia. The 1-year overall survival, local recurrence-free survival, regional recurrence-free survival and distant metastasis-free survival were 100 ％ (31/32),96.9 ％ (31/32),96.9 ％ (31/32),96.9 ％ (31/32),respectively,for the whole cohort.Conclusions2 cycles of the docetaxel plus cisplatin regimen with concurrent IMRT are demonstrated being feasible and effective in treating locally advanced NPC with promising results.The major toxicities are leucopenia and neutropenia, but they are tolerable with the use of G-CSF. Further investigation of long-term efficacy of the regimen is required.