1.The efficacy of vonoprazan fumarate in the treatment of laryngopharyngeal reflux disease evaluated by the Chinese version of the RSS-12 scale.
Chaorong BIAN ; Peng ZHOU ; Ping SHEN ; Yunpeng ZANG ; Wen LIU
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2025;39(1):66-76
Objective: To explore the efficacy of vonoprazan fumarate in the treatment of laryngopharyngeal reflux disease(LPRD) evaluated by the Chinese version of the RSS-12 scale. Methods:A total of 100 LPRD patients treated in the otolaryngology-head and neck surgery outpatient clinic of our hospital were randomly divided into two groups(50 cases each). The observation group was treated with vonoprazan fumarate(20 mg, once daily), and the control group was treated with esomeprazole enteric-coated capsules(20 mg, twice daily) for 12 weeks. The selected observation indicators in this study included RSI, the Chinese version of RSS-12, and RFS scores before and after treatment. Results:Prior to treatment, there was no statistically significant difference in the Chinese version of RSS-12, RSI, and RFS between the two groups(P>0.05). After 8 and 12 weeks of antacid treatment, both the Chinese version of RSS-12 and RSI significantly decreased in both group (P<0.05). The changes in symptoms were particularly noticeable between 0-8 weeks of treatment according to the Chinese version of RSS-12 and RSI. After 12 weeks of treatment, the RFS scores significantly decreased compared to pretreatment levels (P<0.05). After 12 weeks of antacid treatment, according to the Chinese version of RSS-12, 80% of patients in the observation group showed a good therapeutic response, compared to 64% in the control group; according to RSI, 90% of patients in the observation group showed a good therapeutic response, compared to 84% in the control group. There was no statistically significant difference in the treatment effect between the two groups after 12 weeks of treatment(P>0.05). Conclusion:Vonoprazan fumarate can significantly improve the symptoms and signs of laryngopharyngeal reflux, and their treatment effect is not inferior to proton pump inhibitors. Compared with RSI, the Chinese version of RSS-12 can serve as a new screening tool for clinical diagnosis of LPRD in China.
Humans
;
Sulfonamides/therapeutic use*
;
Male
;
Pyrroles/therapeutic use*
;
Female
;
Laryngopharyngeal Reflux/drug therapy*
;
Treatment Outcome
;
Middle Aged
;
Esomeprazole/therapeutic use*
;
Proton Pump Inhibitors/therapeutic use*
;
Adult
2.Objective characteristics of tongue manifestation in different stages of damp-heat syndrome in diabetic kidney disease
Zhaoxi DONG ; Yang SHI ; Jiaming SU ; Yaxuan WEN ; Zheyu XU ; Xinhui YU ; Jie MEI ; Fengyi CAI ; Xinyue ZANG ; Yan GUO ; Chengdong PENG ; Hongfang LIU
Journal of Beijing University of Traditional Chinese Medicine 2025;48(3):398-411
Objective:
To investigate the objective characteristics of tongue manifestation in different stages of damp-heat syndrome in diabetic kidney disease (DKD).
Methods:
A cross-sectional study enrolled 134 patients with DKD G3-5 stages who met the diagnostic criteria for damp-heat syndrome in DKD. The patients were treated at Dongzhimen Hospital, Beijing University of Chinese Medicine, from May 2023 to January 2024. The patients were divided into three groups: DKD G3, DKD G4, and DKD G5 stage, with 53, 33, and 48 patients in each group, respectively. Clinical general data (gender, age, and body mass index) and damp-heat syndrome scores were collected from the patients. The YZAI-02 traditional Chinese medicine (TCM) AI Tongue Image Acquisition Device was used to capture tongue images from these patients. The accompanying AI Open Platform for TCM Tongue Diagnosis of the device was used to analyze and extract tongue manifestation features, including objective data on tongue color, tongue quality, coating color, and coating texture. Clinical data and objective tongue manifestation characteristics were compared among patients with DKD G3-5 based on their DKD damp-heat syndrome status.
Results:
No statistically significant difference in gender or body mass index was observed among the three patient groups. The DKD G3 stage group had the highest age (P<0.05). The DKD G3 stage group had a lower score for symptoms of poor appetite and anorexia(P<0.05) than the DKD G5 group. No statistically significant difference was observed in damp-heat syndrome scores among the three groups. Compared with the DKD G5 stage group, the DKD G3 stage group showed a decreased proportion of pale color at the tip and edges of the tongue (P<0.05). The DKD G4 stage group exhibited an increased proportion of crimson at the root of the tongue, a decreased proportion of thick white tongue coating at the root, a decreased proportion of pale color at the tip and edges of the tongue, an increased hue value (indicating color tone) of the tongue color in the middle, an increased brightness value (indicating color lightness) of the tongue coating color in the middle, and an increased thickness of the tongue coating (P<0.05). No statistically significant difference was observed in other tongue color proportions, color chroma values, body characteristics, coating color proportions, coating color chroma values, and coating texture characteristics among the three groups.
Conclusion
Tongue features differ in different stages of DKD damp-heat syndrome in multiple dimensions, enabling the inference that during the DKD G5 stage, the degree of qi and blood deficiency in the kidneys, heart, lungs, liver, gallbladder, spleen, and stomach is prominent. Dampness is more likely to accumulate in the lower jiao, particularly in the kidneys, whereas heat evil in the spleen and stomach is the most severe. These insights provide novel ideas for the clinical treatment of DKD.
3.Clinical guideline for diagnosis and treatment of nonunion of osteoporotic vertebral fractures (version 2025)
Haipeng SI ; Le LI ; Junjie NIU ; Wencan ZHANG ; Fuxin WEI ; Jinqiu YUAN ; Qiang YANG ; Hongli WANG ; Guangchao WANG ; Shihong CHEN ; Yunzhen CHEN ; Xiaoguang CHENG ; Jianwen DONG ; Shiqing FENG ; Rui GU ; Yong HAI ; Tianyong HOU ; Bo HUANG ; Xiaobing JIANG ; Lei ZANG ; Chunhai LI ; Nianhu LI ; Hua LIN ; Hongjian LIU ; Peng LIU ; Xinyu LIU ; Sheng LU ; Shibao LU ; Chunshan LUO ; Lvy CHAOLIANG ; Lvy WEIJIA ; Xuexiao MA ; Wei MEI ; Chunyang MENG ; Cailiang SHEN ; Chunli SONG ; Ruoxian SONG ; Jiacan SU ; Honglin TENG ; Hui SHENG ; Beiyu WANG ; Bingwu WANG ; Liang WANG ; Xiangyang WANG ; Nan WU ; Guohua XU ; Yayi XIA ; Jin XU ; Youjia XU ; Jianzhong XU ; Cao YANG ; Maowei YANG ; Zibin YANG ; Xiaojian YE ; Hailong YU ; Xijie YU ; Hua YUE ; Zhili ZENG ; Xinli ZHAN ; Hui ZHANG ; Peixun ZHANG ; Wei ZHANG ; Zhenlin ZHANG ; Jianguo ZHANG ; Tengyue ZHU ; Qiang LIU ; Huilin YANG
Chinese Journal of Trauma 2025;41(10):932-945
Nonunion of osteoporotic vertebral fractures (OVF), predominantly affecting the elderly, can lead to intractable pain, vertebral collapse, progressive kyphotic deformity, and neurological impairment, significantly compromising patients′ quality of life. There exists considerable debate on diagnosis and management of OVF, encompassing key issues such as clinical diagnosis and staging criteria for nonunion, surgical indications and procedure selection, and postoperative rehabilitation planning. Currently, there lacks standardized clinical guideline and expert consensus on the diagnosis and management of OVF nonunion in China. To address this gap, Minimally Invasive Surgery Group of Chinese Orthopedic Association, Osteoporosis Committee of Chinese Association of Orthopedic Surgeons, Prevention and Rehabilitation Committee for Osteoporosis of Chinese Association of Rehabilitation Medicine and Minimally Invasive Orthopedic Surgery Branch of China Association for Geriatric Care jointly organized domestic experts in spinal surgery, endocrinology, and rehabilitation to formulate the Clinical guideline for the diagnosis and treatment for nonunion of osteoporotic vertebral fractures ( version 2025), based on existing literature and clinical experience and adhering to principles of scientific rigor and practicality. The guideline provided 13 evidence-based recommendations encompassing diagnosis and treatment of OVF nonunion, aiming to standardize its clinical management.
4.Study on AlignRT guided set-up of breast-conserving radiotherapy and the impact of patients′ thoracic characteristic parameters
Ailin WU ; Lin YAN ; Xinglei WU ; Peng ZHANG ; Jingjing CHENG ; Chunbao ZANG ; Hongbo ZHANG ; Aidong WU
Chinese Journal of Radiological Medicine and Protection 2025;45(1):24-30
Objective:To compare the impact of the AlignRT-based optical guidance method with the traditional marker line method on the accuracy of positioning, and explore the effect of patient′s different thoracic characteristic parameters on the precision of optical guidance positioning.Methods:A total of sixty breast cancer patients who received post breast-conserving radiotherapy at Anhui Cancer Hospital from July 2022 to September 2023 were retrospectively selected. Then these patients were equally divided into traditional cross hairs set-up (marker line group) and surface-guided set-up (SGRT group). The cone-beam CT scanning results were used as the gold standard, the three-dimensional set-up errors and the CTV-PTV target area external radiotherapy boundaries of two groups were studied comparatively. Multiple patient′s thoracic characteristic parameters were defined and the correction between each parameter and set-up error of SGRT was analyzed.Results:The mean value of three-dimensional set-up errors in the SGRT group and the marker line group was within 0.2 cm and 0.5 cm, respectively. The differences in three-dimensional set-up errors and total displacements between two groups were statistically significant ( z=-2.93, -3.21, -2.59, -4.76, P<0.05). The SGRT group reduced the CTV-PTV boundary from 0.5 cm of conventional marker line group to 0.3 cm. The thoracic aspect ratio H/W, the affected side pinch angle α1, and the healthy side pinch angle α2 were positively correlated with the x-direction posing error ( r=0.49, 0.59, 0.71, P<0.05); whereas, the affected side and the healthy side mammary gland heights D1 and D2 were negatively correlated with the z-direction posing error ( r=-0.46, -0.49, P<0.05). Conclusions:For breast-conserving postoperative radiotherapy patients, SGRT can obtain a more accurate radiotherapy set-up than the traditional marker line method, and can effectively reduce the target area externally expanded range. Meanwhile, the monitoring accuracy of SGRT is affected by the patient′s thoracic characteristic parameters, and clinical attention should be paid to breast-conserving radiotherapy patients with thick body shape, narrow body width, and small breast glands.
5.Mining and verification of inflammation-related genes in skeletal muscle of exhaustive exercise rats undergoing cannabidiol intervention
Wenning ZHU ; Lili SUN ; Lina PENG ; Juncheng SI ; Wanli ZANG ; Weidong YIN ; Mengqi LI
Chinese Journal of Tissue Engineering Research 2025;29(11):2347-2356
BACKGROUND:Cannabidiol is effective in ameliorating the body's inflammatory response,but no clear mechanistic studies have been conducted to ameliorate skeletal muscle inflammation induced by exhaustive exercise. OBJECTIVE:To explore the mechanism by which cannabidiol improves skeletal muscle inflammation during exhaustive exercise by using transcriptome sequencing technology. METHODS:Thirty-six Sprague-Dawley rats were randomly divided into six groups:blank control group,exercise coconut oil group,exercise control group,50 mg/kg cannabidiol group,60 mg/kg cannabidiol group,and 70 mg/kg cannabidiol group,with six rats in each group.Except for rats in the blank control group,rats in each group were subjected to swimming exercise for 9 days to produce the exhaustive exercise model.At the end of each swimming exercise,rats in the cannabidiol groups were given 2 mL of fat-soluble cannabidiol at different concentrations(50,60,and 70 mg/kg)by gavage;rats in the exercise coconut oil group were given the same volume of coconut oil by gavage until the end of the exercise on the 9th day;and rats in the blank control group and the exercise control group were not given any special treatment.The levels of inflammatory factors and differentially expressed genes in the skeletal muscle of rats in each group were determined using ELISA and transcriptome sequencing techniques.Differentially expressed genes obtained were subjected to KEGG analysis,and the accuracy of the sequencing data was verified by fluorescence quantitative PCR. RESULTS AND CONCLUSION:The results of ELISA showed that the contents of interleukin-6(P<0.05),tumor necrosis factor-α(P<0.01),interleukin-10 and other inflammatory factors in the exercise group increased significantly compared with the blank control group and the coconut oil group.After cannabidiol intervention,the mass concentrations of interleukin-6 and tumor necrosis factor-α showed a sequential decrease with increasing cannabidiol concentration.By comparing GO and KEGG databases,the functional properties of differentially expressed genes were analyzed,and the results showed that the differentially expressed genes were mainly involved in the tumor necrosis factor signaling pathway and the Toll-like receptor signaling pathway.RT-qPCR results showed that the trends of five randomly selected differentially expressed genes were in agreement with the transcriptome sequencing results.To conclude,cannabidiol can improve skeletal muscle inflammation caused by exhaustive exercise.
6.Novel cecropin D-derived peptide with inhibitory effect on porcine reproductive and respiratory syndrome virus entry.
Haoyue ZANG ; Jie PENG ; Huichen GUO ; Shiqi SUN ; Qiaoying ZENG ; Jingjing ZHOU
Chinese Journal of Biotechnology 2025;41(7):2735-2747
Porcine reproductive and respiratory syndrome (PRRS), caused by the porcine reproductive and respiratory syndrome virus (PRRSV), is one of the major diseases threatening the swine industry. This study aims to rationally design and optimize natural antimicrobial peptides to identify antiviral candidates with potent inhibitory activity against PRRSV, thereby establishing a foundation for the development of novel preventive and therapeutic agents targeting PRRS. In this study, with cecropin D (CD) as the parent peptide, three derivatives (CD-2, CD-3, and CD-4) were designed through amino acid substitutions. CD and derived peptides were obtained by solid-phase peptide synthesis. MS and reversed-phase (RP)-HPLC were employed for sequence identification, purification, and purity analysis. The secondary structures of the peptides were investigated by circular dichroism spectroscopy. CellTiter 96® AQueous one solution cell proliferation assay was used to evaluate the cytotoxicity of the peptides. The inhibitory activities and mechanisms of the peptides against PRRSV were studied by Western blotting, RT-qPCR, and indirect immunofluorescence assay. The MS and RP-HPLC results showed that CD and derived peptides were successfully synthesized, with the purity reaching up to 95%. Circular dichroism analysis revealed that the CD derivatives exhibited more stable and abundant α-helices in a cell membrane-mimicking environment. The MTS assay indicated that all tested peptides at 100 μg/mL had negligible cytotoxicity. The experimental results of the action phase of the peptide against PRRSV demonstrated that the derived peptides significantly enhanced antiviral activities at the viral entry stage compared with the parent peptide. This enhancement was attributed to the introduction of lysine, tryptophan, and phenylalanine, which increased the hydrophobicity and positive charge of the peptides. These findings provide a theoretical basis for the application and structural optimization of antiviral peptides and may offer a new strategy for preventing and controlling PRRSV.
Porcine respiratory and reproductive syndrome virus/physiology*
;
Animals
;
Swine
;
Antiviral Agents/chemistry*
;
Porcine Reproductive and Respiratory Syndrome/virology*
;
Virus Internalization/drug effects*
;
Antimicrobial Peptides/chemistry*
7.Study on quality changes and shelf life of space pre-packaged scallion pancakes during storage
Jingchao SUN ; Longzhen ZHANG ; Wei LIU ; Pu CHEN ; Junli CHEN ; Bingjian DU ; Zhenjiao HE ; Peng ZANG
Space Medicine & Medical Engineering 2025;36(5):464-472
Objective Pre-packaged space scallion pancakes are prone to quality deterioration during storage due to starch retrogradation and lipid oxidation,which affects their food safety and sensory characteristics.Therefore,investigating their quality changes during storage and predicting shelf life are of great significance for ensuring the quality of space food.Methods study conducted accelerated shelf-life tests at(37±1)℃ and(47±1)℃ under simulated spacecraft food storage conditions.Comprehensive analyses were performed,including physicochemical properties(acid value,peroxide value,carbonyl value),microbiological indicators(total bacterial count,coliforms),color parameters(L*,a*,b*,c*,h°),and texture characteristics(hardness,adhesiveness,etc.).XRD and FTIR were employed to verify starch retrogradation and lipid oxidation.Results Physicochemical properties:The acid value gradually decreased and stabilized with prolonged storage.The peroxide value increased rapidly at 37℃and 47℃,with samples stored at 47℃approaching the safety limit(0.25 g/100 g)within 40 days,while the carbonyl value exhibited a decreasing trend.Microbiological indicators:All samples met the requirements of GJB 4992A-2012.No microbial contamination was detected initially,with only minor bacterial growth observed in later stages,and no coliforms were detected throughout the storage period.Color changes:During storage at 20℃,the a*value increased by 91.67%,while b* and c* values showed significant increases.Meanwhile,L* and h° values decreased by 7.42%and 8.75%,respectively.Texture deterioration:Overall texture characteristics declined,and XRD and FTIR analyses confirmed aggravated starch retrogradation.Shelf-life prediction:Correlation analysis identified peroxide value as the key factor.The established prediction model had an error margin of less than 10%,with predicted shelf lives of 236,121,and 57 days at 20℃,37℃,and 47℃,respectively.Conclusion This study reveals the quality change patterns of space scallion pancakes during storage.The established shelf-life prediction model provides theoretical and methodological support for quality monitoring of pre-packaged space foods.
8.Transcriptome sequencing analysis of the mechanism by which cold water swimming regulates inflammatory response in rats
Juncheng SI ; Lina PENG ; Lili SUN ; Yu WANG ; Lei SHI ; Wenhui SHEN ; Mengqi LI ; Wanli ZANG
Chinese Journal of Tissue Engineering Research 2025;29(29):6205-6211
BACKGROUND:When exercising in a cold environment,the body's inflammatory response is affected by both low temperature and exercise intervention,and its impact and mechanism remain to be explored.OBJECTIVE:To explore the effects and mechanisms of cold water swimming on inflammatory response of rats based on transcriptome sequencing technology.METHODS:40 male SD rats were randomly divided into room temperature control group,room temperature swimming group,cold water control group,and cold water swimming group,with 10 rats in each group.The room temperature control group had no intervention and was free to eat.The room temperature swimming group received swimming at 30 min/time,6 times/week,for 5 weeks;the water temperature was(28±2)℃,and the water depth was 35 cm.In the cold water control group,the rats were placed in a water tank with a depth of 3 cm;the water temperature was(18±2)℃,and they were free to move.The cold water swimming group received swimming at 30 min/time,6 times/week,for 5 weeks;the water temperature was(18±2)℃,and the water depth was 35 cm.Enzyme-linked immunosorbent assay was used to detect the levels of serum interleukin-6,tumor necrosis factor-α,and high-sensitivity C-reactive protein.Based on the transcriptome sequencing results,differentially expressed genes were screened to draw Venn diagrams and heat maps,and Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analysis were performed.The protein-protein interaction network was used to screen core genes.RT-qPCR was used to detect the mRNA expression of IRF7,OAS2,and OASL in rat spleen tissue.RESULTS AND CONCLUSION:(1)The ELISA results showed that compared with the room temperature control group,the levels of various inflammatory indicators in the room temperature swimming group and the cold water swimming group were significantly increased(P<0.05),and there was no significant difference in the cold water control group.Compared with the room temperature swimming group,there was no significant difference in the expression of inflammatory indicators in the cold water swimming group.Compared with the cold water control group,the expressions of interleukin-6 and tumor necrosis factor-α in the cold water swimming group showed an upward trend,and high-sensitivity C-reactive protein increased significantly(P<0.05).(2)Transcriptome analysis:Venn diagram showed that there were 39 differentially expressed genes affected by the dual factors of temperature and exercise intervention.Cluster heat map analysis results showed that the overall gene expression trends of the room temperature swimming group and the cold water swimming group were similar,and the cold water control group showed an opposite trend.Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analysis results showed that differentially expressed genes were enriched in the immune system,locomotion,nucleic acid-binding transcription factor activity,NOD-like receptor signaling pathways and other pathways.The number of genes enriched in the NOD-like receptor signaling pathway was relatively large,and the q value was small,which may be a key pathway.The protein-protein interaction network screened out IRF7,OAS2,OASL,IFIT2,IFIT3 and other core genes.(3)RT-qPCR verification results showed that compared with the room temperature control group,the expressions of IRF7,OAS2 and OASL were significantly increased in the room temperature swimming group and the cold water swimming group(P<0.01),and there was no significant difference in the cold water control group.Compared with the cold water control group,the expression of each gene was significantly increased in the cold water swimming group(P<0.01).(4)It is concluded that cold water swimming can promote inflammatory response,and its mechanism may be regulated through the NOD-like receptor signaling pathway.
9.Clinical analysis of arthroscopic modified suture-bridge surgery for full-thickness rotator cuff injury in elderly patients
Rui GE ; Peng PENG ; Jian ZANG ; Peng XU ; Guan-wei XU
Journal of Regional Anatomy and Operative Surgery 2025;34(4):342-347
Objective To investigate the effects of arthroscopic modified suture-bridge surgery on shoulder stability,pain and imaging anatomical parameters of elderly patients with full-thickness rotator cuff injury.Methods A total of 104 elderly patients with full-thickness rotator cuff injury admitted to Zhuhai Hospital of Integrated Traditional Chinese and Western Medicine from September 2021 to June 2023 were selected and divided into the suture-bridge group and the modified group according to random number table method,with 52 cases in each group.Patients in the suture-bridge group underwent arthroscopic suture-bridge surgery,and patients in the modified group underwent arthroscopic modified suture-bridge surgery.Perioperative indexes,the range of motion of shoulder joint,American Shoulder and Elbow Surgeons(ASES)score,visual analogue scale(VAS)score,Constant shoulder function score,University of California Los Angeles(UCLA)shoulder score,recovery of shoulder joint,Sugaya classification of imaging before and after surgery,and the rate of complications were compared between the two groups.Results There was no significant difference in the length of incision,operation time,joint perfusion volume,intraoperative blood loss,or hospitalization time of patients between the two groups(P>0.05).The external rotation,forward flexion,and abduction ranges of motion 6 months after surgery of patients in the modified group were greater than those in the suture-bridge group(P<0.05);The ASES,Constant,and UCLA scores 6 months after surgery of patients in the modified group were higher than those in the suture-bridge group,while the VAS score was lower than that in the suture-bridge group,with statistically significant differences(P<0.05);The proportions of patients who experienced complete painlessness in shoulder joint,had the same range of motion as the healthy side,and recovered to work ability before surgery 6 months after surgery in the modified group were higher than those in the suture-bridge group,and the Sugaya classification of imaging in the modified group was better than that in the suture-bridge group,with statistically significant differences(P<0.05);There was no significant difference in the incidence of shoulder joint swelling,limb numbness,bleeding,or retear of patients between the two groups(P>0.05).Conclusion Arthroscopic modified suture-bridge surgery for elderly patients with full-thickness rotator cuff injury can relieve postoperative pain,improve shoulder joint function,expand range of motion of shoulder joint,and improve imaging anatomical parameters without increasing the rate of complications.
10.Study on AlignRT guided set-up of breast-conserving radiotherapy and the impact of patients′ thoracic characteristic parameters
Ailin WU ; Lin YAN ; Xinglei WU ; Peng ZHANG ; Jingjing CHENG ; Chunbao ZANG ; Hongbo ZHANG ; Aidong WU
Chinese Journal of Radiological Medicine and Protection 2025;45(1):24-30
Objective:To compare the impact of the AlignRT-based optical guidance method with the traditional marker line method on the accuracy of positioning, and explore the effect of patient′s different thoracic characteristic parameters on the precision of optical guidance positioning.Methods:A total of sixty breast cancer patients who received post breast-conserving radiotherapy at Anhui Cancer Hospital from July 2022 to September 2023 were retrospectively selected. Then these patients were equally divided into traditional cross hairs set-up (marker line group) and surface-guided set-up (SGRT group). The cone-beam CT scanning results were used as the gold standard, the three-dimensional set-up errors and the CTV-PTV target area external radiotherapy boundaries of two groups were studied comparatively. Multiple patient′s thoracic characteristic parameters were defined and the correction between each parameter and set-up error of SGRT was analyzed.Results:The mean value of three-dimensional set-up errors in the SGRT group and the marker line group was within 0.2 cm and 0.5 cm, respectively. The differences in three-dimensional set-up errors and total displacements between two groups were statistically significant ( z=-2.93, -3.21, -2.59, -4.76, P<0.05). The SGRT group reduced the CTV-PTV boundary from 0.5 cm of conventional marker line group to 0.3 cm. The thoracic aspect ratio H/W, the affected side pinch angle α1, and the healthy side pinch angle α2 were positively correlated with the x-direction posing error ( r=0.49, 0.59, 0.71, P<0.05); whereas, the affected side and the healthy side mammary gland heights D1 and D2 were negatively correlated with the z-direction posing error ( r=-0.46, -0.49, P<0.05). Conclusions:For breast-conserving postoperative radiotherapy patients, SGRT can obtain a more accurate radiotherapy set-up than the traditional marker line method, and can effectively reduce the target area externally expanded range. Meanwhile, the monitoring accuracy of SGRT is affected by the patient′s thoracic characteristic parameters, and clinical attention should be paid to breast-conserving radiotherapy patients with thick body shape, narrow body width, and small breast glands.


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