Dosimetric study of five-field intensity-modulated radiotherapy compared with conventional three-dimensional conformal radiotherapy for rectal cancer

Objective： The aim of the study was to compare the difference of dose distribution in clinical target volume and organ at risk （OAR） between five-field intensity-modulated radiotherapy （IMRT） and conventional three-dimensional conformal radiotherapy （3DCRT） in the radiotherapy of rectal cancer. Methods： Fifteen patients with rectal cancer treated with radio- therapy （RT） were retrospectively analyzed. Among the patients, seven received RT preoperatively and 8 postoperatively. The target volume and the OARs such as the small bowel, bladder and femoral heads were contoured for each patient. 3DCRT-plan and IMRT-plan were performed for each patient respectively, with the prescribed dose covering at least 95% of the planning target volume （PTV）. The conformity index （CI） and homogeneity index （HI） were used for evaluation of the dose distribution in the target volume, and the Dx% （the lowest dose to the x% volume of the OARs that received the highest dose of irradiation） and the mean dose were used for evaluation of the dose to OARs. Paired-T test was used for companson of the difference between the two plans. Results： In the IMRT-plan and 3DCRT-plan, the CI were 0.94 and 0.87 （P = 0.000） and the HI were 1.13 and 1.17, respectively （P = 0.001）. For small bowel, the D30%, D50% and the mean dose were 19.67 Gy, 15.13 Gy and 18.81 Gy in the IMRT-plan and 25.20 Gy, 22.20 Gy and 22.89 Gy in the 3DCRT-plan, respectively （P 〈 0.001 for all pairs of parameters）. For bladder, the D30%, D50%, and the mean dose were 24.80 Gy, 34.20 Gy and 28.70 Gy in the IMRT- plan, and 35.07 Gy, 44.67 Gy and 35.68 Gy in the 3DCRT-plan, respectively （P 〈 0.001 for all pairs of parameters）. For femoral heads, the D5% in the IMRT-plan and 3DCRT-plan were 40.6 Gy and 40.47 Gy, respectively （P = 0.936）, and the mean dose were 30.14 Gy and 25.57 Gy, respectively （P = 0.001）. Conclusion： Five-field IMRT-plan is better than 3DCRT-plan in the conformity and the dose homogeneity within target volume and also better in sparing the small bowel and bladder.

A study of transarterial infusion chemotherapy of gemcitabine plus three dimensional conformal radiotherapy for local advanced pancreatic cancer

Objective: To evaluate the clinical effect of transarterial infusion chemotherapy of gemcitabine plus three dimen- sional conformal radiotherapy on patients with local advanced pancreatic cancer. Methods: Fifty-one patients with local ad- vanced pancreatic cancer from June 2002 to February 2004 were enrolled, twenty-four patients of combined group were treat- ed with transarterial infusion chemotherapy of gemcitabine plus three dimensional conformal radiotherapy, while twenty-seven patients of control group were treated only with transarterial infusion chemotherapy of gemcitabine. Results: There were significant statistical differences between two groups in clinical benefit response (91.7% versus 74.1%, P < 0.01) and overall remission rate (70.8% versus 33.3%, P < 0.01). The 6-month survival rate, 12-month survival rate and 24-month survival rate of combined group were 83.3%, 62.5% and 37.5% respectively, while that of control group were 55.6%, 33.3% and 11.1% respectively. This showed significant difference between the two groups. Conclusion: Transarterial infusion chemotherapy of gemcitabine plus three dimensional conformal radiotherapy may be better than single transarterial infusion chemotherapy of gemcitabine in improving survival rates and elongating survival time of patients with local advanced pancreatic cancer.

Clinical study of three dimensional conformal radiotherapy combined with intracavitary brachytherapy in the treatment of cervical cancer

Objective: The aim of our study was to evaluate the outcome and complications of cervical cancer patients undergoing conventional intracavitary brachytherapy (ICBT) treated with 3D-conformal radiotherapy (3DCRT). Methods: Sixty cervical cancer patients were divided randomly into the conformal group and the conventional group. Thirty patients treated with 3D-conformal radiotherapy in the 3DCRT group, when the whole pelvic received DT 40 Gy, a planning CT scan of each patient was obtained and the second 3DCRT therapy plan was taken. Then, continued to irradiate to 50 Gy. At last, 3DCRT was boosted at local involved volumes to the total dose of 60 Gy. When 3DCRT was combined with intracavitary brachytherapy, the dose of brachytherapy to point A was 30 Gy/5 fractions. In the conventional group, after a total tumor dose of 40 Gy was delivered by the whole pelvic irradiation, the four-field technique was used to irradiate the total pelvic and regional nodes (median dose of 10 Gy), and the involved volumes were boosted to 60 Gy and the dose of brachytherapy to point A was 30 Gy-36 Gy/5-6 fractions. Moreover, both groups were combined with intracavitary brachytherapy respectively. Results: The 1, 2, 3-year survival rates for the 3DCRT group and the conventional group were 96.7%, 93.3%, 90.0% and 86.6%, 76.7%, 70% respectively (P = 0.04, P = 0.02 and P = 0.02). There was a statistically significant difference between the two groups. Compared to the two groups each other in toxic effects, except for the I-II grade rectal and bladder reaction and pelvic fibrosis which was lower in the 3DCRT group (P = 0. 007, P = 0. 006 and P = 0. 015), the side effects were similar and well tolerated in two groups. Conclusion: The all-course 3DCRT combined with intracavitary brachytherapy can be considered as an effective and feasible approach to cervical cancer and may significantly improve the survival rate and reduce the late toxicity. This new role for 3DCRT merits need further evaluation with large patient numbers and longer follows up.

Application of three dimensional conformal radiation therapy combined with high-intensity focused ultrasound for prostate cancer

Objective:Prostate cancer is a form of cancer that develops in the prostate,a gland in the male reproductive system.Prostate cancer tends to develop in men over the age of fifty;it is one of the most prevalent types of cancer in men.This article introduced a new method of prostate cancer treatment with the combination of three dimensional conformal radiation therapy (3D-CRT) and high-intensity focused ultrasound (HIFU),its efficacy was evaluated.Methods:From January 2004 to December 2009,95 patients were diagnosed with prostate cancer,among them,48 patients were received combined therapy with total irradiation of TD 60 Gy/30 Fx and 5 fractions of HIFU treatment,while 47 patients were received with pure 3D-CRT with total irradiation of TD (66-72) Gy/(33-36) Fx.Various indicators were evaluated,such as the local control rate and distant metastasis rate,the changes in blood PSA and fPSA,changes in T-lymphocyte subsets and NK cells,as well as acute adverse reaction of normal tissue.Results:The local response rate difference between the two groups had statistical significance (P < 0.05);the changes in blood PSA and fPSA were significant (P < 0.05);CD3+,CD4+,CD8+,CD4+/CD8+ and NK cells of the combined group increased obviously (P < 0.01),while the latter group had no increase (P > 0.05);the combined group had lower blood cells reduction and II-level acute adverse reaction of rectum,bladder and caput humeri than the pure group,but the II-level acute adverse reaction of urogenital canal in the combined group was higher (P < 0.05).Conclusion:The combined therapy with 3D-CRT and HIFU is a good way for the treatment of aged-related prostate cancer.It can ease the symptoms,control the disease and lengthen the survival time.

Observation of Intensity-Modulated Radiotherapy with Different Fractionated Doses Used in 58 Cases with Astrocytoma

OBJECTIVE To analyze the therapeutic effects and side effects of intensity-modulated radiotherapy （IMRT） with different fractionated doses in treating astrocytoma.METHODS During a period from October 2001 to December 2006, 58 patients with astrocytoma were treated using IMRT. Based on the World Health Organization （WHO） classification, 32 of the 58 cases were grade-Ⅱ, 20 grade-Ⅲ and 6 grade-IV （glioblastoma multiforme, GBM）. Thirty-two of the 58 patients （3 with grade IV, 11 with grade Ⅲ, and the other 18 with grade II who were over 40 years） were treated with hyperfractionated IMRT （Hyper Fr IMRT）, and the other 26 patients were treated with standard fractionated IMRT （St Fr IMRT）.RESULTS The 1-, 3- and 5-year overall survival （OS） rates were respectively 86%, 52%, and 45%, and the 1-, 3- and 5-year progression-free survival （PFS） rates were respectively 77%, 38%, and 25%. Using an analytical hierarchy process it was shown that concerning the patients with grade II astrocytoma classified based on WHO grading, the therapeutic effect was much better in the group of Hyper Fr IMRT than in the St Fr IMRT group. There was no statistical significance of the differences in the OS and PFS rates between the 2 groups （P = 0.049 and P = 0.006）. The OS and PFS rates of the patients with grade-III astrocytoma were both higher in the group with Hyper Fr IMRT than in the St Fr IMRT group. However, there was no statistical significance of the differences between the 2 groups. Advanced RTOG grade-Ⅲ（radiation therapy oncology group, RTOG） neurotoxicity occurred only in 1 of the cases.CONCLUSION Compared with the St Fr IMRT, the Hyper Fr IMRT may help to prolong the survival of patients with astrocytoma.

Effect of intensity-modulated radiotherapy versus three-dimensional conformal radiotherapy on clinical outcomes in patients with glioblastoma multiforme

Background Few studies were reported on the comparison of clinical outcomes between intensity-modulated radiotherapy （IMRT） and three-dimensional conformal radiotherapy （3D-CRT） in the treatment of glioblastoma multiforme （GBM）.This study aimed to determine whether IMRT improves clinical outcomes compared with 3D-CRT in patients with GBM.Methods The records of 54 patients with newly-diagnosed GBM from July 2009 to December 2010 were reviewed.The patients underwent postoperative IMRT or 3D-CRT with concurrent and adjuvant temozolomide.Kaplan-Meier method and log rank test were used to estimate differences of patients＇ survival.Results The median follow-up was 13 months.Of the 54 patients,fifty （92.6%） completed the combined modality treatment.The 1-year overall survival rate （OS） was 79.6%.The pattern of failure was predominantly local.A comparative analysis revealed that no statistical difference was observed between the IMRT group （n=21） and the 3D-CRT group （n=33） for 1-year OS （89.6% vs.75.8%,P=0.795）,or 1-year progression-free survival （PFS） （61.0% vs.45.5%,P=0.867）.In dosimetric comparison,IMRT seemed to allow better sparing of organs at risk than 3D-CRT did （P=0.050,P=0.055）.However,there was no significant difference for toxicities of irradiation between the IMRT group and the 3D-CRT group.Conclusions Our preliminary results suggested that delivering standard radiation doses by IMRT is unlikely to improve local control or overall survival for GBM compared with 3D-CRT.Given this lack of survival benefit and increased costs of IMRT,the utilization of IMRT treatment for GBM needs to be carefully rationalized.

A dosimetric comparative study between conformal and intensity modulated radiation therapy in the treatment of primary nasopharyngeal carcinomas: the Egyptian experience

Objective: The study is a comparative study, the aim of which is to compare 3D conformal radiation therapy (3D-CRT) and intensity modulated radiation therapy (IMRT) in treating nasopharyngeal carcinomas; dosimetrically evaluating and comparing both techniques as regard target coverage and doses to organs at risk (OAR). Methods: Twenty patients with nasopharyngeal carcinoma were treated by 3D-CRT technique and another 20 patients were treated by IMRT. A dosimetric comparison was done by performing two plans for the same patient using Eclipse planning system (version 8.6). Results: IMRT had a better tumor coverage and conformity index compared to 3D-CRT plans (P value of 0.001 and 0.004), respectively. As for the dose homogeneity it was also better in the IMRT plans and the reason for this was attributed to the dose inhomogeneity at the photon/electron junction in the 3D-CRT plans (P value 0.032). Also, doses received by the risk structures, particularly parotids, was significantly less in the IMRT plans than those of 3D-CRT (P value 0.001). Conclusion: IMRT technique was clearly able to increase the dose delivery to the target volume, improve conformity and homogeneity index and spare the parotid glands in comparison to 3D-CRT technique.

Long-term outcomes and prognostic factors for patients with esophageal cancer following radiotherapy

AIM:To evaluate long-term outcomes and prognostic factors for esophageal squamous cell carcinoma(SCC) treated with three dimensional conformal radiotherapy(3D-CRT).METHODS:Between January 2005 and December 2006,153 patients(120 males,33 females) with pathologically confirmed esophageal SCC and treated with 3D-CRT in Cancer Hospital of Shantou University were included in this retrospective analysis.Median age was 60 years(range:37-84 years).The proportion of tumor location was as follows:upper thorax(including the cervical region),73(48%);middle thorax,73(48%);lower thorax,7(5%),respectively.The median radiation dose was 64 Gy(range:50-74 Gy).Fifty four cases(35%) received cisplatin-based concurrent chemotherapy.Univariate and multivariate analysis were performed to determine the association between the correlative factors and prognosis.RESULTS:The five-year overall survival rate was 26.3%,with a median follow-up of 49 mo(range:3-66 mo) for patients who were still alive.On univariate analysis,lesion location,lesion length by barium esophagogram,computed tomography imaging characteristics including Y diameter(anterior-posterior,AP,extent of tumor),gross tumor volume of primary lesion(GTV-E),volume of positive lymph nodes(GTV-LN),and the total target volume(GTV-T = GTV-E + GTVLN) were prognostic for overall survival.By multivariate analysis,only the Y diameter [hazard ratio(HR) 2.219,95%CI 1.141-4.316,P = 0.019] and the GTV-T(HR 1.372,95%CI 1.044-1.803,P = 0.023) were independent prognostic factors for survival.CONCLUSION:The overall survival of esophageal carcinoma patients undergoing 3D-CRT was promising.The best predictors for survival were GTV-T and Y diameter.

Volumetric modulated arc radiotherapy for limited osteosclerotic myeloma

AIM:To assess the feasibility of volumetric intensity-modulated arc radiotherapy (VMAT) in patients with limited polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes syndrome. METHODS:A 70-year-old male with histologically confirmed osteosclerotic myeloma was treated in our department in July 2010 with VMAT. Fourty-six Gray in 23 fractions were given on three bone lesions. Doses delivered to target volume and critical organs were compared with a tridimensional conformal radiotherapy (3D-RT) plan. Treatment was well tolerated without any side effects.RESULTS:VMAT improved dose homogeneity within the target volume, as compared to 3D-RT (standard deviations:2.9 Gy and 1.6 Gy for 3D and VMAT, respectively). VMAT resulted in a better sparing of critical organs. Dose delivered to 20% of organ volume (D20) was reduced from 22 Gy (3D-RT) to 15 Gy (VMAT) for small bowel, from 24 Gy (3D-RT) to 17 Gy (VMAT) for bladder and from 47 Gy (3D-RT) to 3 Gy (VMAT) for spinal cord. Volumes of critical organs that received at least 20 Gy (V20) were decreased by the use of VMAT, as compared to 3D-RT (V20 bladder:10% vs 99%; V20 small bowel:6% vs 21%). One year after treatment completion, no tumor progression has been reported. CONCLUSION:VMAT improved dose distribution as compared to 3D-RT for limited osteosclerotic myeloma, with better saving of critical organs.

The Effect of Absorbed Dose to Organs at Risk Following Craniospinal Irradiation Using Different Radiotherapy Techniques

Introduction: In medulloblastoma patients craniospinal irradiation is an important element the treatment. Our study aimed to evaluate the effect of absorbed dose to organs at risk using the hybrid intensity-modulated radiation therapy (IMRT) versus three-dimensional conformal radiotherapy (3DCRT) for craniospinal irradiation (CSI) in average risk medulloblastoma patients. Materials and Methods: In this study, thirteen medulloblastoma patients were included. The prescribed total dose to the planning target volume (PTV) was 23, 40 Gy in 13 fractions. Two radiotherapy techniques, three dimensional conformal radiotherapy (3DCRT) and hybrid intensity modulated radiotherapy (IMRT) were used to treat these patients. The coverage of the Target was evaluated using the D mean, D95%, D2%, D98% and V95%. Other parameters were also compared such as Integral dose (ID), Homogeneity index (HI) and doses to the organs at risk (OARs). Results: There was no significant difference in the mean dose received by the PTV-Brain or the dose received by 95% and 98% of PTV volume using the two techniques. For PTV-Spine, the percentage volume receiving 95% of the total dose increased significantly in the hybrid IMRT technique compared to the conformal technique. So, hybrid IMRT plan achieved the best coverage for PTV spine. Lower dose for OAR was delivered by 3DCRT, except the heart and thyroid, hybrid IMRT achieved better sparing. All plans resulted in the same dose homogeneity index (DHI) for PTV-Brain. For PTV-Spine, hybrid IMRT technique achieved better dose homogeneity compared to 3DCRT technique (1.09 vs. 1.12;p > 0.05). Conclusions: hybrid IMRT technique can be realized on conformal technique because it achieved better dose coverage for the (PTV) and organ at risk (OAR). 3DCRT reduced mean dose to most OARS, except the heart and thyroid. Therefore, the hybrid IMRT technique may be a CSI treatment alternative to 3DCRT.

三维适形放疗联合吡咯替尼对乳腺癌脑转移患者的疗效与安全性

目的探讨三维适形放疗(3D-CRT)与吡咯替尼联用对乳腺癌脑转移患者的治疗效果与安全性。方法回顾性选取2019-03—2024-03于郑州大学第二附属医院就诊的60例乳腺癌脑转移患者,按其是否服用吡咯替尼分为对照组和观察组,对比2组患者的治疗效果、生存期、干预前后的血清同型半胱氨酸(Hcy)和ICAM-1水平、Karnofsky评分(KPS)和不良反应发生情况。结果观察组疗效优于对照组(66.66%比40.00%),且生存期更长(PFS:7.98±1.83比5.11±1.51;MS:11.55±1.59比8.17±1.84;OS:14.52±2.19比11.64±3.29;P<0.05)。观察组患者KSP评分改善更明显(80.00%比53.33%,P<0.05)。观察组Hcy(654.97±175.64比835.64±216.45)和ICAM-1(11.64±7.29比17.64±8.15)水平低于对照组(P<0.05)。2组不良反应对比无统计学差异(P>0.05)。结论3D-CRT结合吡咯替尼可提高乳腺癌脑转移患者的疗效和生活自理能力,延长生存期,且不会增加额外的治疗负担,安全性较高。

冰己抑瘤丸联合三维适形放疗同步替莫唑胺化疗治疗恶性脑胶质瘤临床研究

目的:观察冰己抑瘤丸联合三维适形放疗(3DCRT)同步替莫唑胺(TMZ)化疗治疗恶性脑胶质瘤患者的临床疗效。方法:将80例恶性脑胶质瘤患者按随机数字表法分为对照组与观察组各40例。对照组予以3DCRT同步TMZ化疗,观察组在对照组基础上予以冰己抑瘤丸治疗,均治疗42 d。比较2组临床疗效、不良反应及1年死亡率,并比较2组治疗前后血清血管内皮生长因子(VEGF)、表皮生长因子受体(EGFR)水平。结果:观察组总有效率75.00%,高于对照组62.50%(P<0.05)。治疗后,2组血清VEGF、EGFR水平均降低(P<0.05),且观察组低于对照组(P<0.05)。2组不良反应发生率比较,差异无统计学意义(P>0.05)。观察组1年死亡率为5.00%,低于对照组22.50%(P<0.05)。结论:恶性脑胶质瘤患者予以冰己抑瘤丸联合3DCRT同步TMZ化疗临床疗效显著,具有较高的安全性,远期疗效良好。

三维适形调强放疗在头颈部肿瘤治疗中的临床应用

目的探究三维适形调强放疗在头颈部肿瘤治疗中的临床应用。方法方便选取2021年12月—2022年3月吉林省肿瘤医院收治的122例头颈部肿瘤患者为研究对象,随机抽签法分为对照组和观察组,对照组行三维适形放疗,观察组行三维适形调强放疗,并观察两组不同时间段症状、生活质量、临床疗效。结果观察组口干、疼痛、进食困难及吞咽困难等症状评分均优于对照组,差异有统计学意义(P均<0.05);观察组的不良反应发生情况少于对照组,差异有统计学意义(P<0.05);观察组的治疗总有效率为90.16%高于对照组的77.05%,差异有统计学意义(χ^(2)=4.659,P<0.05)。结论三维适形调强放疗,可以有效提升患者的生活质量,改善症状,减少肿瘤转移和复发率,全面提高治疗的价值。

三维适形放疗联合^(89)SrCl_(2)治疗前列腺癌骨转移的效果研究

目的探讨三维适形放疗联合^(89)SrCl_(2)对前列腺癌骨转移患者的治疗效果。方法选择前列腺癌骨转移患者(骨转移部位为脊柱/骨盆)60例为对象,信封法分为两组,各30例。对照组采用三维适形放疗,观察组联合^(89)SrCl_(2)治疗,两组均完成3个月治疗,比较两组有效率、视觉模拟疼痛(VAS)、Karnofsky活动状态评分(KPS评分)、白细胞计数、血小板计数、血红蛋白水平、前列腺特异性抗原(PAS)、癌胚抗原(CEA)、I型胶原羧基端肽β特殊序列(β-CTx)、骨转化生化标志物I型前胶原氨基端延长肽(TPINP)、血清睾酮水平及不良反应发生率。结果观察组治疗3个月有效率高于对照组(P<0.05);观察组干预后VAS评分低于对照组(P<0.05);KPS得分高于对照组(P<0.05);观察组干预后WBC、PLT及Hb高于对照组(P<0.05);观察组干预后PAS、CEA、β-CTx、TPINP及血清睾酮水平低于对照组(P<0.05);两组不良反应比较无统计差异(P>0.05)。结论三维适形放疗联合^(89)SrCl_(2)能提高前列腺骨癌转移患者治疗有效率,可减轻前列腺癌骨转移患者疼痛,提高患者生活质量,白细胞、血小板及血红蛋白抑制程度较轻,有助于降低肿瘤标志物水平,且未增加不良反应发生率,值得推广应用。

全胃癌患者采用不同照射技术放疗的效果分析

目的探究全胃癌患者采用不同照射技术放疗的效果。方法选择全胃癌患者80例,依据照射技术的不同分为观察组(三维适形放疗技术)及对照组(简单调强技术),各40例。比较两组格拉斯哥昏迷评分法(GCS)评分、生存质量评分、临床疗效、不良反应发生情况等。结果两组放疗前GCS评分比较无意义(P>0.05);放疗后,观察组GCS评分(13.10±1.86)分高于对照组的(11.15±1.91)分,差异有统计学意义(P<0.05)。观察组社会关系、生理、环境、心理评分分别为(27.55±5.18)、(25.36±5.41)、(24.67±5.43)、(24.50±5.47)分,高于对照组的(18.20±4.26)、(17.25±4.11)、(17.28±4.14)、(17.26±4.91)分,差异有统计学意义(P<0.05)。观察组总有效率为95.00%,高于对照组的70.00%,差异有统计学意义(P<0.05)。观察组不良反应发生率为2.50%,低于对照组的22.50%,差异有统计学意义(P<0.05)。结论将三维适形放疗技术用于全胃癌患者的治疗,能明显改善患者疾病预后,提升生存质量,减少不良反应,提升对全胃癌的治疗效果,适合应用于临床推广。

胸部肿瘤三维适形调强放疗摆位误差相关因素分析

分析胸部肿瘤患者行三维适形调强放疗(IMRT)时产生摆位误差的相关因素,以准确计算出临床靶区(CTV)外放边界(摆位扩边(SM)值),从而实现安全放疗.以莆田学院附属医院接受IMRT治疗的83例胸部恶性肿瘤患者为研究对象,应用体位固定技术及电子射野影像装置(EPID)测量比较胸部恶性肿瘤IMRT的摆位误差,采用多元线性回归分析方法对摆位误差相关因素进行分析,进而分类计算出其SM值.结果显示,83例受试者在X轴、Y轴、Z轴上的SM值分别为0.31、0.28、0.28 cm;靶区定位、性别及肺容量分别为Y轴个体随机误差、Z轴个体系统误差、Z轴个体随机误差的独立影响因素.这表明肿瘤患者行IMRT治疗时靶区定位、性别及肺容量在不同方向上影响其摆位误差.

三维适形调强放疗在局部晚期头颈部鳞状细胞癌患者中的应用效果

目的:探讨三维适形调强放疗在局部晚期头颈部鳞状细胞癌(HNSCC)中的应用效果.方法:选取2021年1月—2022年8月滨州市中心医院收治的HNSCC患者100例为研究对象,随机分为对照组和观察组,各50例.对照组予以常规化疗,观察组在对照组基础上加用三维适形调强放疗.比较两组治疗效果及安全性.结果:观察组疾病控制率高于对照组,差异有统计学意义(P=0.037);治疗后,两组细胞角质蛋白19片段抗原21-1、胸苷激酶1、鳞状细胞癌相关抗原水平均下降,观察组低于对照组,差异有统计学意义(P<0.05);治疗后,两组CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+)均高于治疗前,CD8^(+)低于治疗前,观察组优于对照组,差异有统计学意义(P<0.05);两组不良反应发生率比较,差异无统计学意义(P>0.05).结论:三维适形调强放疗可提高局部晚期HNSCC患者治疗效果,降低肿瘤标志物水平,加快免疫功能恢复,且不会增加不良反应.

替吉奥联合三维适形放疗治疗食管癌疗效及对心脏损伤和毒副反应的影响

目的探讨替吉奥联合三维适形放疗治疗食管癌疗效及对心脏损伤和毒副反应的影响。方法选取行放化疗的92例中晚期食管癌患者,随机分为试验组和对照组,每组46例。对照组患者采用三维适形放疗治疗,试验组患者采用三维适形放疗联合替吉奥治疗,均持续治疗6周。观察两组患者的近期临床疗效,分别于治疗前后抽取患者空腹静脉外周血,检测患者的细胞角化素蛋白片段19(CYFRA21-1)、癌胚抗原(CEA)、鳞状上皮细胞癌抗原(SCC)、心肌肌钙蛋白I(cTnI)、肌红蛋白(Mb)、肌酸激酶同工酶(CK-MB)水平。记录两组患者在放疗期间的毒副反应发生情况。结果试验组患者的总缓解率为50.00%,与对照组的41.30%比较差异无统计学意义(P>0.05);试验组患者的疾病控制率为93.48%,高于对照组的78.26%(P<0.05)。治疗后,两组患者CYFRA21-1、CEA、SCC水平均有下降(P<0.05),试验组患者的CYFRA21-1、CEA、SCC水平低于对照组(P<0.05);两组患者的cTnI、Mb、CK-MB水平均有上升(P<0.05),试验组患者的CYFRA21-1、CEA、SCC水平与对照组比较差异无统计学意义(P<0.05);两组患者的毒副反应情况比较差异无统计学意义(P>0.05)。结论三维适形放疗联合替吉奥治疗食管癌的临床疗效优于单独三维适形放疗,且安全性较好。

培美曲塞联合调强放疗技术在Ⅲ期非小细胞肺癌治疗中的应用效果

目的:探讨培美曲塞联合调强放疗技术(IMRt)在Ⅲ期非小细胞肺癌(NSCLC)治疗中的应用效果。方法:选取2021年1月—2022年8月钟祥市人民医院肿瘤内科收治的68例Ⅲ期非小细胞肺癌患者,按照随机数表法分为两组,各34例。培美曲塞组给予培美曲塞联合IMRt治疗,多西他赛组给予多西他赛联合IMRt治疗。比较两组患者临床疗效、生存率及不良反应。结果:治疗4个周期后,培美曲塞组客观缓解率、临床控制率与多西他赛组比较,差异均无统计学意义(P>0.05);培美曲塞组白细胞减少、恶心/呕吐、脱发发生率均明显低于多西他赛组,差异有统计学意义(P<0.05);两组疾病进展时间及1年生存率比较,差异无统计学意义(P>0.05)。结论:培美曲塞联合IMRt与多西他赛联合IMRt治疗Ⅲ期NSCLC的效果相当,但培美曲塞的不良反应发生率低。

三维适形放疗联合立体定向放疗治疗原发性肝癌的近期疗效及安全性

目的探讨三维适形放疗联合立体定向放疗治疗原发性肝癌的近期疗效,并分析其安全性。方法依据随机数字表法将96例原发性肝癌患者分为对照组和观察组,各48例。对照组给予立体定向放疗治疗,观察组在对照组基础上加用三维适形放疗治疗。比较2组临床疗效、血清肿瘤标志物、肝功能及放射性不良反应,并随访至2023年5月统计2组生存情况。结果观察组临床缓解率高于对照组,且观察组血清糖类抗原19-9、甲胎蛋白、α-L-岩藻糖苷酶、癌胚抗原、谷丙转氨酶、谷草转氨酶、总胆红素水平均低于对照组(P<0.05);2组放疗期间放射性不良反应发生率比较,差异无统计学意义(P>0.05)。随访期间,观察组生存时间长于对照组(P<0.05)。结论三维适形放疗联合立体定向放疗可提高原发性肝癌的治疗效果,降低血清肿瘤标志物水平,改善患者肝功能,还可延长患者生存时间,且不会增加放射性不良反应。