1.A retrospective study of the efficacy of endovascular therapy for acute symptoms of internal carotid artery occlusion
Pinyuan ZHANG ; Jiren ZHANG ; Dongman ZHAO ; Shilei QI ; Guoying DU ; Jian YANG
Journal of Xi'an Jiaotong University(Medical Sciences) 2025;46(6):916-924
Objective To explore the influencing factors of poor prognosis after successful recanalization of symptomatic acute internal carotid artery occlusion(AICAO)by applying endovascular therapy(EVT)technology.Methods We made a retrospective analysis of the clinical and imaging data of 62 symptomatic AICAO patients.After collateral evaluation and recanalization therapy,we obtained flat CT and DSA images,together with the findings of the collateral circulation assessment.At 24.0±6.0 hours after surgery,head plain CT scans were reexamined,and at 14 days after surgery or at discharge,neurological function was assessed using the NIHSS scale.Using the modified Rankin scale,we assessed neurological function and prognosis over a 90-day period.Results Each of the 62 patients had a TICI grade of 2b or 3 and was successfully recanalized.On average,it took 124.36±66.31 minutes from puncture to recanalization.Two instances involved iatrogenic dissection,while twelve cases had intraoperative distal thrombus escape episodes.Of all the patients,32 ones(51.6%)had a fair prognosis,whereas 30 patients(48.4%)had a bad prognosis.The two patient groups differed significantly in the ASPECT score,preoperative NIHSS score,intraoperative balloon catheter usage,postoperative 24 hour and 14 days NIHSS score,postoperative 14 days neurological function,and all-cause mortality within 90 days(all P<0.05).The best intervention threshold for preoperative NIHSS score was 11.5 points,and both the preoperative NIHSS score and intraoperative BGC utilization were independent predictors influencing poor outcome.Conclusion The preoperative NIHSS score and intraoperative BGC usage are independent predictors of 90-day poor prognosis in AICAO patients with symptomatic AICAO who underwent successful recanalization via endovascular therapy.
2.Asian consensus on normothermic intraperitoneal and systemic treatment for gastric cancer with peritoneal metastasis
Zhenggang ZHU ; Kitayama Joji ; Hyung-Ho Kim ; Jimmy Bok-Yan So ; Hui CAO ; Lin CHEN ; Xiangdong CHENG ; Jiankun HU ; Imano Motohiro ; Ishigami Hironori ; Ye Seob Jee ; Jong-Han Kim ; Yasuhiro Kodera ; Han LIANG ; Xiaowen LIU ; Sheng LU ; Yiping MOU ; Mingming NIE ; Won Jun Seo ; Yanong WANG ; Dan WU ; Zekuan XU ; Yamaguchi Hironori ; Chao YAN ; Zhongyin YANG ; Kai YIN ; Yonemura Yutaka ; Wei-Peng Yong ; Jiren YU ; Jun ZHANG ; Asian Gastric Cancer NIPS Treatment Collaborative Group ; Shanghai Anticancer Association, Committee of Peritoneal Tumor
Journal of Surgery Concepts & Practice 2025;30(4):277-294
Gastric cancer with peritoneal metastasis (GCPM) is a common and lethal manifestation of advanced gastric cancer, with a median survival of only 5-11 months. This consensus was developed by 30 experts from Asia (China, Japan, Korea, and Singapore) using the Delphi method and the GRADE evidence grading system. A total of 29 statements were formulated, covering the diagnosis and assessment of GCPM, indications for laparoscopic exploration and NIPS (normothermic intraperitoneal and systemic treatment), treatment regimens, prevention and management of complications, criteria for conversion surgery, and postoperative intraperitoneal therapy. The consensus aims to standardize clinical practice and improve the prognosis of patients with GCPM.
3.Distribution of gamma pass rates for ultra-long target volumes of cervical cancer based on two measurement methods
Junjie LEI ; Jiren LIU ; Xiaopeng PAN ; Xu HOU ; Xiaoli JIN
Chinese Journal of Radiological Medicine and Protection 2025;45(9):870-875
Objective:To compare gamma pass rates for ultra-long target volumes of cervical cancer between individual measurements by moving the phantom isocenter and segmented measurements combined with merging and to assess the influence of scattering blocks on verification result during segmented measurements.Methods:A retrospective study was conducted on 24 cervical cancer patients with ultra-long target volumes (lengths: 23.5–36.0 cm) treated using helical tomotherapy. Two measurement methods were used to verify the gamma pass rates: individual measurements by moving the phantom isocenter and segmented measurements combined with merging. For the first measurement method, the patients′ treatment plans were transferred to the ArcCheck phantom. After the dose distribution was calculated and exported, the gamma pass rates measured and calculated were compared. For the segmented measurements, a 50-cm-long virtual phantom was imported, and the treatment plans of patients were then transferred to the virtual phantom. Afterward, the dose distribution of the virtual phantom was calculated and exported. Then, two dose measurements were conducted under upward and downward setup of the ArcCheck phantom. Two dose measurement files were obtained and then fused to produce a merged file. Then, the γ pass rates were calculated. Repeated measurements were conducted after scattering blocks were installed. The γ-pass rates were assessed using varying dose criteria.Results:Under various evaluation criteria, no statistically significant differences in γ pass rates were observed between the individual measurements by moving the phantom isocenter and the segmented measurement in the presence of scattering blocks ( P > 0.05). In contrast, there existed statistically significant differences in γ pass rates between the individual measurements by moving the phantom isocenter and the segmented measurement in the absence of scattering blocks according to the (global) criterion of 3%/2 mm absolute dose ( Z = -2.31, P = 0.02). Additionally, the segmented measurement in the presence of scattering blocks enhanced pass rates, with statistical significant difference under the criterion of 3%/2 mm relative dose ( Z = -2.11, P = 0.04). Conclusions:In the case where ArcCheck is used to measure the dose distribution of ultra-long target volumes in cervical cancer, it is advisable to preferentially use individual measurements by moving the phantom isocenter. When segmented measurements combined with merging are required, it is necessary to install scattering blocks during measurements. This will improve γ-pass rates during verification and ensure the accuracy of dose verification.
4.Reconstruction of digital pulp defect with fascio-pedicled island flap carrying dorsal branch of proper palmar digital nerve
Xiaorui ZHANG ; Gang ZHOU ; Xiulei XU ; Jiren CAI
Chinese Journal of Microsurgery 2025;48(1):50-54
Objective:To investigate a surgical method and clinical outcomes of a fascia pedicled island flap with dorsal branch of proper palmar digital nerve in reconstruction of defects of digital pulp.Methods:Seventy-five patients who had digital pulp defects and treated at Department of Orthopaedics, Xinjiang Production and Construction Corps Alar Hospital, Shaw Hospital Affiliated Zhejiang University School of Medicine, from December 2019 to December 2022, were retrospectively analysed. The patients were 40 males and 35 females aged 25-61 years with an average age of 42 years. The defects of digital pulp involved in 23 thumbs, 15 per group of index fingers, middle fingers and ring fingers, and 7 little fingers. The digital pulp defects were 0.8 cm×0.9 cm to 1.5 cm×2.1 cm in size, and the sizes of flap were 1.0 cm×1.2 cm to 1.8 cm×2.4 cm. Donor sites were covered by medium-thickness skin grafts and pressurised bandage was applied. Clinical outcomes of the surgery were monitored through the postoperative follow-ups at outpatient clinic, WeChat and telephone reviews.Results:Postoperative follow-up ranged 9 to 15 months, with an average of 12 months. The donor sites and skin grafts all achieved stage-I healing. Seventy-three flaps completely survived after surgery. However, 2 flaps had partial necrosis, which healed after dressing changes, 4 flaps encountered flap bruising and swelling, which were rectified by removal of high-tension sutures, and 7 flaps had tension blisters, which had disappeared in 2 weeks. At the final follow-up, the appearance and texture of the flaps were graded as excellent for 54 flaps and good for 21 flaps, all without pale, cyanotic or dark in colour. Forty-nine flaps showed normal elasticity or with slight atrophy, 24 with mild atrophy, 2 with moderate atrophy and none with obvious or severe atrophy. Mobility of the affected digits was rated as excellent for 57 digits (average 42.3°), good for 12 (average 26.7°) and fair in 6 digits (average 16.3°). TPD of flap surfaces ranged 6 to 11 mm, with an average of 8.1 mm. Digital function were evaluated according to the Evaluation Trial Standards of Upper Limb Partial Functional of Hand Surgery of Chinese Medical Association, with 48 digits in excellent (average 11.2 points), 22 in good (average 8.1 points) and 5 in fair (average 5.4 points) and with a combined excellence and good rates of 93.33%. All flap donor sites were in normal function. For patient satisfaction: 53 patients were well satisfied, 21 were fairly satisfied and 1 was dissatisfied.Conclusion:Application of the island flap with dorsal branch of proper palmar digital nerve with fascio-pedicled in reconstruction of the defect of digital pulp has a high survival rate, simple surgical operation, good satisfactory outcome, with the digital artery being remained intact.
5.Experience summary of laparoscopes adhesiolysis for adhesive intestinal obstruction: a case series of 30 patients
Yanyun HONG ; Yang DONG ; Hailong JIN ; Kankai ZHU ; Xiaodong WANG ; Yang LI ; Jiren YU ; Xiaosun LIU
Chinese Journal of Postgraduates of Medicine 2025;48(9):788-791
Objective:To evaluate the safety and efficacy of laparoscopes adhesiolysis in the treatment of adhesive intestinal obstruction.Methods:A retrospective analysis was conducted on the clinical data of 30 patients with adhesive intestinal obstruction who underwent laparoscopes adhesiolysis at the First Affiliated Hospital, Zhejiang University School of Medicine between January 2021 and December 2024. The demographics, surgical parameters and postoperative complications were recorded.Results:Among the 30 patients, 16 were male and 14 were female, with age of (55.93 ± 13.83) years. A history of abdominal surgery was present in 25 patients (83.3%). Of the surgeries, 4 cases (13.3%) were performed as emergency procedures and 26 cases (86.7%) were elective. The operative time was (125.57 ± 48.25) min, and intraoperative blood loss was (26.17 ± 16.90) ml. The time to first flatus was (3.30 ± 1.95) d, the time to first oral intake was 4.00 (3.00, 5.00) d, the hospital stay was (24.23 ± 17.97) d, and the postoperative hospital stay was 11.50 (6.75, 18.75) d. The incision pain score 0 score was in 8 cases (26.7%), 1 score in 5 cases (16.7%), 2 scores in 10 cases (33.3%), 3 scores in 3 cases (10.0%), 4 scores in 3 cases (10.0%), and 5 scores in 1 case (3.3%). One case developed a postoperative wound infection. The patients were followed up for 1 year, 1 patient experienced recurrent incomplete intestinal obstruction due to widespread peritoneal metastasis from gastric cancer.Conclusions:Laparoscopes adhesiolysis is a safe and effective treatment for adhesive intestinal obstruction, offering advantages in terms of postoperative recovery and low complication rates. The continued use of minimally invasive techniques is recommended in the management of this condition.
6.Therapeutic Effect of Cranial Painkiller Pills' Extract Powder in Treatment of Trigeminal Neuralgia Induced by Injection of Talci Pulvis into Infraorbital Foramen of Model Rats Based on OTULIN-regulated Neuroinflammation
Shuran LI ; Xinwei WANG ; Jing SUN ; Dan XIE ; Ronghua ZHAO ; Lei BAO ; Zihan GENG ; Qiyue SUN ; Jingsheng ZHANG ; Yaxin WANG ; Xihe CUI ; Xinying LI ; Bing HAN ; Tianjiao LU ; Xiaolan CUI ; Liying LIU ; Shanshan GUO
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(21):21-28
ObjectiveThis paper aims to verify the therapeutic effect of Cranial Painkiller pills' extract powder prepared by the new process on the rat's trigeminal neuralgia model caused by infraorbital injection of Talci Pulvis, evaluate its potential clinical application value, and compare the therapeutic effect with that of Cranial Painkiller granules, so as to provide data support for the application of the Cranial Painkiller pills' extract powder and precise treatment. MethodsThe rat's trigeminal neuralgia model was constructed by infraorbital injection of Talci Pulvis, and the rats were randomly divided into the normal group, model group, carbamazepine group (60 mg·kg-1), Cranial Painkiller granules group (2.70 g·kg-1), and low, medium, and high dosage groups of Cranial Painkiller pills' extract powder (1.35, 2.70, 5.40 g·kg-1) according to the basal mechanical pain thresholds, and there were 10 rats in each group. The drug was administered by gavage to each group 2 h after modeling, and distilled water was given by gavage to the normal and model groups under the same conditions once a day for 10 d. Von Frey brushes were used to measure mechanical pain thresholds in rats. Hematoxylin-eosin (HE) staining was used to detect pathological changes in the trigeminal ganglion, and enzyme-linked immunosorbent assay (ELISA) was used to detect the inflammatory factors interleukin-1 (IL-1), interleukin-6 (IL-6), interleukin-8 (IL-8), and tumor necrosis factor-α (TNF-α) levels in rat serum, as well as neuropeptide substance P (SP) and β-endorphin (β-EP) levels in rat brain tissue. Western blot technique was used to detect the levels of NLRP3, ASC, Caspase-1, and OTULIN proteins in rat brain tissue. ResultsCompared with the normal group, the pain threshold of rats in the model group showed a continuous significant decrease (P<0.01). The pathological damage of brain tissue was significant (P<0.01), and the inflammatory levels of IL-1, IL-6, IL-8, and TNF-α in serum were significantly elevated (P<0.01). The level of the SP in the brain tissue was significantly elevated (P<0.01), and the level of β-EP was significantly reduced (P<0.01), while the level of OTULIN was significantly reduced, and NLRP3, ASC, and Caspase-1 protein levels were significantly elevated (P<0.01). After administration of the drug, compared with the model group, the pain threshold of each dose group of the Cranial Painkiller pills' extract powder and the Cranial Painkiller granules group significantly increased (P<0.01). The inflammatory levels of IL-1, IL-6, IL-8, and TNF-α and SP levels significantly decreased (P<0.01), and the β-EP levels were significantly elevated (P<0.01), while the levels of OTULIN protein were significantly elevated (P<0.05, P<0.01), and the levels of NLRP3, ASC proteins were decreased (P<0.01)in high dose Cranial Painkiller pills' extract powder. Meanwhile, compared with those in the model group, the trigeminal ganglion lesions of rats in the Cranial Painkiller pills' extract powder and Cranial Painkiller granules groups showed different degrees of improvement (P<0.05, P<0.01). ConclusionThe Cranial Painkiller pills' extract powder has significant therapeutic effects on the rat model of trigeminal neuralgia induced by infraorbital injection of Talci Pulvis, and its mechanism is related to the improvement of OTULIN-regulated neuroinflammation.
7.Therapeutic Effect of Cranial Painkiller Pills' Extract Powder in Treatment of Trigeminal Neuralgia Induced by Injection of Talci Pulvis into Infraorbital Foramen of Model Rats Based on OTULIN-regulated Neuroinflammation
Shuran LI ; Xinwei WANG ; Jing SUN ; Dan XIE ; Ronghua ZHAO ; Lei BAO ; Zihan GENG ; Qiyue SUN ; Jingsheng ZHANG ; Yaxin WANG ; Xihe CUI ; Xinying LI ; Bing HAN ; Tianjiao LU ; Xiaolan CUI ; Liying LIU ; Shanshan GUO
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(21):21-28
ObjectiveThis paper aims to verify the therapeutic effect of Cranial Painkiller pills' extract powder prepared by the new process on the rat's trigeminal neuralgia model caused by infraorbital injection of Talci Pulvis, evaluate its potential clinical application value, and compare the therapeutic effect with that of Cranial Painkiller granules, so as to provide data support for the application of the Cranial Painkiller pills' extract powder and precise treatment. MethodsThe rat's trigeminal neuralgia model was constructed by infraorbital injection of Talci Pulvis, and the rats were randomly divided into the normal group, model group, carbamazepine group (60 mg·kg-1), Cranial Painkiller granules group (2.70 g·kg-1), and low, medium, and high dosage groups of Cranial Painkiller pills' extract powder (1.35, 2.70, 5.40 g·kg-1) according to the basal mechanical pain thresholds, and there were 10 rats in each group. The drug was administered by gavage to each group 2 h after modeling, and distilled water was given by gavage to the normal and model groups under the same conditions once a day for 10 d. Von Frey brushes were used to measure mechanical pain thresholds in rats. Hematoxylin-eosin (HE) staining was used to detect pathological changes in the trigeminal ganglion, and enzyme-linked immunosorbent assay (ELISA) was used to detect the inflammatory factors interleukin-1 (IL-1), interleukin-6 (IL-6), interleukin-8 (IL-8), and tumor necrosis factor-α (TNF-α) levels in rat serum, as well as neuropeptide substance P (SP) and β-endorphin (β-EP) levels in rat brain tissue. Western blot technique was used to detect the levels of NLRP3, ASC, Caspase-1, and OTULIN proteins in rat brain tissue. ResultsCompared with the normal group, the pain threshold of rats in the model group showed a continuous significant decrease (P<0.01). The pathological damage of brain tissue was significant (P<0.01), and the inflammatory levels of IL-1, IL-6, IL-8, and TNF-α in serum were significantly elevated (P<0.01). The level of the SP in the brain tissue was significantly elevated (P<0.01), and the level of β-EP was significantly reduced (P<0.01), while the level of OTULIN was significantly reduced, and NLRP3, ASC, and Caspase-1 protein levels were significantly elevated (P<0.01). After administration of the drug, compared with the model group, the pain threshold of each dose group of the Cranial Painkiller pills' extract powder and the Cranial Painkiller granules group significantly increased (P<0.01). The inflammatory levels of IL-1, IL-6, IL-8, and TNF-α and SP levels significantly decreased (P<0.01), and the β-EP levels were significantly elevated (P<0.01), while the levels of OTULIN protein were significantly elevated (P<0.05, P<0.01), and the levels of NLRP3, ASC proteins were decreased (P<0.01)in high dose Cranial Painkiller pills' extract powder. Meanwhile, compared with those in the model group, the trigeminal ganglion lesions of rats in the Cranial Painkiller pills' extract powder and Cranial Painkiller granules groups showed different degrees of improvement (P<0.05, P<0.01). ConclusionThe Cranial Painkiller pills' extract powder has significant therapeutic effects on the rat model of trigeminal neuralgia induced by infraorbital injection of Talci Pulvis, and its mechanism is related to the improvement of OTULIN-regulated neuroinflammation.
8.Shufeng Jiedu Granule against mild COVID-19: Protocol of the randomized, double-blind, placebo-controlled, multi-center heal-COVID phase III study.
Li YANG ; Thomas FRIEDEMANN ; Jun PAN ; Xiangyu LI ; Fuxiang WANG ; Yuanlong LIN ; Qiang ZHU ; Sven SCHRÖDER ; Qingsong LIU ; Hongzhou LU
Chinese Herbal Medicines 2025;17(3):601-608
OBJECTIVE:
Since Omicron will likely persist, this trial evaluates the safety and efficacy of Shufeng Jiedu Granule (SFJDG) for mild Omicron infection, aims at finding new therapies especially for home-treated patients.
METHODS:
This randomized, double-blind, placebo-controlled, multi-center phase III trial involves 844 patients, divided into a treatment group (422) and control group (422). Participants will receive SFJDG or placebo for 7 d (1.2 g/bag, 2 bags, 3 times/d). Hospital evaluations will be done on days 1 and 8, with telephone assessments on days 3 and 5. Follow-up continues on days 10 and 14. Diary cards will track symptom scores and safety data. The primary outcome is the time to sustained clinical recovery from corona virus disease 2019 (COVID-19) symptoms. An interim analysis will occur after 70 % of patients complete follow-up, with Type I error correction (α1 = 0.015) at interim analysis based on O'Brien-Fleming-type cumulative error spending function.
RESULTS:
This phase III trial evaluates the efficacy and safety of SFJDG for mild COVID-19, focusing on real-world applicability for home-managed patients. The study's randomized, double-blind, placebo-controlled design ensures methodological rigor, while its comprehensive outcome measures address both symptom recovery and treatment safety. By emphasizing symptom resolution and recovery time, the trial aligns with the clinical priorities for managing mild cases of COVID-19. The findings could offer valuable insights into SFJDG's role in improving patient outcomes and addressing gaps left by existing antiviral therapies, particularly in symptom management.
CONCLUSION
The global risk assessment remains high due to the ongoing virulence of SARS-CoV-2 Omicron sub-lineages. This Phase III study adopts a robust methodology to investigate SFJDG as a treatment for mild COVID-19 as well as it's effectiveness and safety. Furthermore, this study aim to provide sufficient scientific evidence for the market registration of SFJDG especially for home-treated patients. If successful, SFJDG could be a meaningful addition to therapeutic options for mild infections, supporting public health strategies in managing the ongoing impact of SARS-CoV-2.
9.Effect of Shufeng Jiedu Capsules on Relieving Influenza Virus Pneumonia by Suppressing TLR/NF-κB Pathway in Respiratory Epithelial Cells
Zihan GENG ; Lei BAO ; Shan CAO ; Qiang ZHU ; Jun PAN ; Shuran LI ; Ronghua ZHAO ; Jing SUN ; Yanyan BAO ; Shaoqiu MU ; Xiaolan CUI ; Shanshan GUO
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(24):61-68
ObjectiveTo investigate the possible mechanism of Shufeng Jiedu capsules (SFJD) in alleviating influenza A (H1N1) virus pneumonia and focus on its effect on Toll-like receptor (TLR) signaling pathway in respiratory epithelial cells. MethodsA mouse model of viral pneumonia was established via the A/PR/8/34 (PR8) strain of influenza A virus. Mice were randomly divided into a normal group, a PR8 infection (PR8) group, and an SFJD group (8.4 g·kg-1), with 10 mice in each group. The day of infection was designated as day 1. The SFJD group was administered intragastrically at a volume of 20 mL·kg-1 daily, while the normal and PR8 groups were given an equal volume of deionized water. Micro-computed tomography (Micro-CT) was performed on day 5, and the mice were dissected to collect their lungs, after which the lung index was calculated to verify the therapeutic effect of SFJD. Single-cell sequencing was used to analyze the differentially expressed genes in respiratory epithelial cells. Multiplex fluorescence immunohistochemistry was employed to detect the expression of TLR, tumor necrosis factor receptor-associated factor 6 (TRAF6), and myeloid differentiation factor 88 (MyD88) proteins in epithelial cell adhesion molecule (EpCAM)-positive cells, and the proportion of respiratory epithelial cells expressing TLR pathway proteins was calculated. Respiratory epithelial cells were then sorted by flow cytometry, and Western blot was used to detect the expression of TLR, MyD88, TRAF6, Toll-interleukin receptor domain-containing adaptor inducing interferon-β (TRIF), inhibitor of κB kinase α (IKKα), and nuclear factor-κB (NF-κB) in the sorted epithelial cells. Enzyme-linked immunosorbent assay (ELISA) was used to measure the levels of interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α) in lung tissue. ResultsAt the transcriptional level, SFJD reversed the expression of TLR signaling pathway genes in respiratory epithelial cells, downregulating multiple TLR signaling pathway-related genes (P<0.01). At the protein level, SFJD significantly reduced the proportion of respiratory epithelial cells expressing TLR3 (P<0.05), the expression levels of TLR2, TLR3, TLR4, TRIF, TRAF6, IKKα, and NF-κB in epithelial cells(P<0.05, P<0.01), as well as the levels of pro-inflammatory cytokines IL-1β and TNF-α in lung tissue (P<0.01). ConclusionSFJD may alleviate viral pneumonia by suppressing the expression of TLR in respiratory epithelial cells and their subsequent signaling cascades.
10.Distribution of gamma pass rates for ultra-long target volumes of cervical cancer based on two measurement methods
Junjie LEI ; Jiren LIU ; Xiaopeng PAN ; Xu HOU ; Xiaoli JIN
Chinese Journal of Radiological Medicine and Protection 2025;45(9):870-875
Objective:To compare gamma pass rates for ultra-long target volumes of cervical cancer between individual measurements by moving the phantom isocenter and segmented measurements combined with merging and to assess the influence of scattering blocks on verification result during segmented measurements.Methods:A retrospective study was conducted on 24 cervical cancer patients with ultra-long target volumes (lengths: 23.5–36.0 cm) treated using helical tomotherapy. Two measurement methods were used to verify the gamma pass rates: individual measurements by moving the phantom isocenter and segmented measurements combined with merging. For the first measurement method, the patients′ treatment plans were transferred to the ArcCheck phantom. After the dose distribution was calculated and exported, the gamma pass rates measured and calculated were compared. For the segmented measurements, a 50-cm-long virtual phantom was imported, and the treatment plans of patients were then transferred to the virtual phantom. Afterward, the dose distribution of the virtual phantom was calculated and exported. Then, two dose measurements were conducted under upward and downward setup of the ArcCheck phantom. Two dose measurement files were obtained and then fused to produce a merged file. Then, the γ pass rates were calculated. Repeated measurements were conducted after scattering blocks were installed. The γ-pass rates were assessed using varying dose criteria.Results:Under various evaluation criteria, no statistically significant differences in γ pass rates were observed between the individual measurements by moving the phantom isocenter and the segmented measurement in the presence of scattering blocks ( P > 0.05). In contrast, there existed statistically significant differences in γ pass rates between the individual measurements by moving the phantom isocenter and the segmented measurement in the absence of scattering blocks according to the (global) criterion of 3%/2 mm absolute dose ( Z = -2.31, P = 0.02). Additionally, the segmented measurement in the presence of scattering blocks enhanced pass rates, with statistical significant difference under the criterion of 3%/2 mm relative dose ( Z = -2.11, P = 0.04). Conclusions:In the case where ArcCheck is used to measure the dose distribution of ultra-long target volumes in cervical cancer, it is advisable to preferentially use individual measurements by moving the phantom isocenter. When segmented measurements combined with merging are required, it is necessary to install scattering blocks during measurements. This will improve γ-pass rates during verification and ensure the accuracy of dose verification.

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