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Jiang H, Li A, Ke K, Wu Z, Huang J, Huang N, Shen Q, Ji Z, Yang W, Lin J. Three-dimensional treatment-planning-based prediction of seed migration to chest after 125I seed brachytherapy for hepatic malignancy. Brachytherapy 2024:S1538-4721(24)00007-2. [PMID: 38811274 DOI: 10.1016/j.brachy.2024.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 12/12/2023] [Accepted: 01/05/2024] [Indexed: 05/31/2024]
Abstract
PURPOSE To develop and validate risk models incorporating clinical and/or imaging parameters based on three-dimensional treatment-planning systems (3D-TPS) to predict the occurrence of 125I seed migration and the number of migrated seeds <2/≥2 to the chest after brachytherapy for patients with malignant hepatic tumors. METHODS AND MATERIALS A total of 480 patients diagnosed with malignant liver tumors receiving 125I seed brachytherapy from July 2010 to May 2020 were retrospectively enrolled. Variables included 3D-TPS-based CT parameters, that is, the distance from the seed to the inferior vena cava (DSI), the distance from the seed to the second hepatic portal (DSP) and the angle from the seed to the second hepatic portal (ASP), and patients' clinical characteristics, that is, the number of seed implantation procedures (NSP), the maximum number of implanted seeds one time (MAX) and laboratory parameters within 1 week before treatment. Two sets of logistic regression models incorporating clinical and/or imaging variables were developed to predict the occurrence of seed migration and the number of migrated seeds <2/≥2. Model performance was assessed by ROC analysis and decision curve analysis. RESULTS Compared with the clinical models, the combined model showed a higher discriminative ability for both the prediction of migration occurrence and number of migrated seeds ≥ 2/<2 to the chest (AUC, 0.879 vs. 0.668, p < 0.05; 0.895 vs. 0.701, p < 0.05). The decision curve analysis results indicated higher net benefits of combined models than clinical models. Variables, including DSI, NSP and pretreatment lymphocyte-to-neutrophil ratio, acted as the most important predictors in combined models. CONCLUSIONS The proposed combined models based on 3D-TPS improved discriminative abilities for predicting 125I seed migration and number of migrated seeds <2/≥2 to the chest after hepatic brachytherapy, being promising to aid clinical decision-making.
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Affiliation(s)
- Han Jiang
- PET-CT Center, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Intelligent Imaging and Precision Radiotherapy for Tumors (Fujian Medical University); Clinical Research Center for Radiology and Radiotherapy of Fujian Province (Digestive, Hematological and Breast Malignancies)
| | - Ang Li
- PET-CT Center, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Intelligent Imaging and Precision Radiotherapy for Tumors (Fujian Medical University); Clinical Research Center for Radiology and Radiotherapy of Fujian Province (Digestive, Hematological and Breast Malignancies)
| | - Kun Ke
- Department of Interventional Radiology, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Intelligent Imaging and Precision Radiotherapy for Tumors (Fujian Medical University); Clinical Research Center for Radiology and Radiotherapy of Fujian Province (Digestive, Hematological and Breast Malignancies)
| | - Zhengzhong Wu
- Department of Interventional Radiology, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Intelligent Imaging and Precision Radiotherapy for Tumors (Fujian Medical University); Clinical Research Center for Radiology and Radiotherapy of Fujian Province (Digestive, Hematological and Breast Malignancies)
| | - Jingyao Huang
- Department of Interventional Radiology, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Intelligent Imaging and Precision Radiotherapy for Tumors (Fujian Medical University); Clinical Research Center for Radiology and Radiotherapy of Fujian Province (Digestive, Hematological and Breast Malignancies)
| | - Ning Huang
- Department of Interventional Radiology, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Intelligent Imaging and Precision Radiotherapy for Tumors (Fujian Medical University); Clinical Research Center for Radiology and Radiotherapy of Fujian Province (Digestive, Hematological and Breast Malignancies)
| | - Quan Shen
- Department of Interventional Radiology, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Intelligent Imaging and Precision Radiotherapy for Tumors (Fujian Medical University); Clinical Research Center for Radiology and Radiotherapy of Fujian Province (Digestive, Hematological and Breast Malignancies)
| | - Zhongyou Ji
- PET-CT Center, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Intelligent Imaging and Precision Radiotherapy for Tumors (Fujian Medical University); Clinical Research Center for Radiology and Radiotherapy of Fujian Province (Digestive, Hematological and Breast Malignancies)
| | - Weizhu Yang
- Department of Interventional Radiology, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Intelligent Imaging and Precision Radiotherapy for Tumors (Fujian Medical University); Clinical Research Center for Radiology and Radiotherapy of Fujian Province (Digestive, Hematological and Breast Malignancies)
| | - Junqing Lin
- Department of Interventional Radiology, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Intelligent Imaging and Precision Radiotherapy for Tumors (Fujian Medical University); Clinical Research Center for Radiology and Radiotherapy of Fujian Province (Digestive, Hematological and Breast Malignancies).
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Wang J, Chang X, Xu K, Liang Y, Zhao J, Liu Z, Zhang H. CT-guided iodine-125 brachytherapy as salvage therapy for local-regional recurrent breast cancer. Front Oncol 2023; 13:1171813. [PMID: 37664064 PMCID: PMC10471796 DOI: 10.3389/fonc.2023.1171813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 07/06/2023] [Indexed: 09/05/2023] Open
Abstract
Background The treatment of local-regional recurrent breast cancer (BC) after external beam radiotherapy is challenging. We aim to evaluate the effectiveness and safety of computed tomography (CT)-guided percutaneous iodine-125 brachytherapy for local recurrent BC. Methods We retrospectively analyzed 15 patients with local recurrent BC treated with CT-guided interstitial implantation of iodine-125 seeds. Regular contrast-enhanced CT was conducted to evaluate the tumor response. Follow-up survival, quality of life, and adverse events were analyzed. Results Among the 15 patients, five were elderly patients (older than 80 years) and six were complicated with chronic underlying diseases. The median number of 125I seeds implantation was 33 (range: 20-130) with median dose 90 (D90, the minimum dose covering 90% of the target volume) of 108 Gy (range: 60-120 Gy). There was no significant difference in D90, V100 (the volume of the target receiving 100% of the prescription dose), and V150 (the volume of the target receiving 150% of the prescription dose) before and after operation (p > 0.05). The median follow-up was 14 months (range: 6-18 months). Six months after operation, the ORR was 66.7% (10/15) and the LCR was 93.3% (14/15). The 6- and 12-month survival rates were 100 and 41.6%, respectively, and the median survival time was 12.5 months. PS score decreased from 1.53 ± 0.81 to 0.53 ± 0.49. The pain score decreased from 2.87 ± 1.67 before operation to 1.07 ± 1.18 after operation, and the differences were statistically significant (p< 0.05). No severe complications occurred. Conclusions CT-guided iodine-125 brachytherapy provided a safe and effective choice for recurrent BC with significant local therapeutic effects and minor complications, especially for elderly patients with chronic underlying disease and those who were not eligible for surgical resection and had failed to benefit from systemic therapy.
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Affiliation(s)
- Juan Wang
- Department of Oncology, Hebei General Hospital, Shijiazhuang, Hebei, China
| | - Xiaojing Chang
- Department of Radiotherapy, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Ke Xu
- Department of Oncology, Hebei General Hospital, Shijiazhuang, Hebei, China
| | - Yansong Liang
- Department of Oncology, Hebei General Hospital, Shijiazhuang, Hebei, China
| | - Jinxin Zhao
- Department of Oncology, Hebei General Hospital, Shijiazhuang, Hebei, China
| | - Zezhou Liu
- Department of Oncology, Hebei General Hospital, Shijiazhuang, Hebei, China
| | - Hongtao Zhang
- Department of Oncology, Hebei General Hospital, Shijiazhuang, Hebei, China
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Segedin B, Kobav M, Zobec Logar HB. The Use of 3D Printing Technology in Gynaecological Brachytherapy-A Narrative Review. Cancers (Basel) 2023; 15:4165. [PMID: 37627193 PMCID: PMC10452889 DOI: 10.3390/cancers15164165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 08/13/2023] [Accepted: 08/15/2023] [Indexed: 08/27/2023] Open
Abstract
Radiation therapy, including image-guided adaptive brachytherapy based on magnetic resonance imaging, is the standard of care in locally advanced cervical and vaginal cancer and part of the treatment in other primary and recurrent gynaecological tumours. Tumour control probability increases with dose and brachytherapy is the optimal technique to increase the dose to the target volume while maintaining dose constraints to organs at risk. The use of interstitial needles is now one of the quality indicators for cervical cancer brachytherapy and needles should optimally be used in ≥60% of patients. Commercially available applicators sometimes cannot be used because of anatomical barriers or do not allow adequate target volume coverage due to tumour size or topography. Over the last five to ten years, 3D printing has been increasingly used for manufacturing of customised applicators in brachytherapy, with gynaecological tumours being the most common indication. We present the rationale, techniques and current clinical evidence for the use of 3D-printed applicators in gynaecological brachytherapy.
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Affiliation(s)
- Barbara Segedin
- Department of Radiation Oncology, Institute of Oncology Ljubljana, 1000 Ljubljana, Slovenia; (M.K.); (H.B.Z.L.)
- Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Manja Kobav
- Department of Radiation Oncology, Institute of Oncology Ljubljana, 1000 Ljubljana, Slovenia; (M.K.); (H.B.Z.L.)
| | - Helena Barbara Zobec Logar
- Department of Radiation Oncology, Institute of Oncology Ljubljana, 1000 Ljubljana, Slovenia; (M.K.); (H.B.Z.L.)
- Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
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Huo B, Ji Z, He C, Yang W, Ma Y, Huo X, Wang Z, Zhao X, Dai J, Wang H, Chen G, Wang R, Song Y, Zhang K, Huang X, Chai S, Wang J. Safety and efficacy of stereotactic ablative brachytherapy as a salvage therapy for recurrent chest wall cancer: A retrospective, multicenter study. Front Oncol 2023; 12:957497. [PMID: 36824397 PMCID: PMC9942776 DOI: 10.3389/fonc.2022.957497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 12/30/2022] [Indexed: 02/09/2023] Open
Abstract
Purpose To evaluate the safety and efficacy of stereotactic ablative brachytherapy (SABT) as a salvage therapy for patients with recurrent chest wall cancer (rCWC) who have previously received external beam radiotherapy (EBRT) or surgery. Materials and methods Between November 2013 and October 2020, a total of 130 patients (including 75 men with a median age of 63 years) with rCWC treated with SABT were enrolled in this multicenter retrospective study. There were 97 cases of non-small-cell lung carcinoma, 24 cases of breast cancer, and 9 cases of thymic cancer. Of the patients included, 102 patients previously received surgery and 58 patients received EBRT, with systemic treatment progressing after recurrence. None of them were suitable or refused to undergo salvage EBRT or surgery again. Results During the 22 (4-70)-month median patient follow-up, 59 patients died. The local control (LC) rates at 6, 12, 24, and 36 months were 88.3%, 74.3%, 50.4%, and 36.7%, respectively. The 1-, 2- and 3-year survival rates were 85%, 56%, and 42%, respectively. The median overall survival was 26 months (95% CI, 18.9-33.1 months). The pain relief rate was 81%, and the median to remission time was 10 days. Univariate and multivariate analyses showed that independent prognostic factors for LC included tumor size and postoperative D90. On the other hand, independent prognostic factors for survival include the Karnofsky performance status (KPS) score, tumor size, and D90 19 patients (14.6%) developed grade I/II skin reaction complications. No grade III or severer complications occurred. Conclusion SABT is safe and effective as a salvage therapy for rCWC following EBRT/surgery. For patients with a KPS score greater than 80, prescribed dose greater than 130 Gy, and tumor size less than 4 cm may bring better results.
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Affiliation(s)
- Bin Huo
- Department of Oncology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Zhe Ji
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, China
| | - Chuang He
- Center of Minimally Invasive Intervention, Southwest Hospital of Army Medical University, Chongqing, China
| | - Wanying Yang
- Department of Oncology, Tengzhou Central People’s Hospital, Tengzhou, China
| | - Yanli Ma
- Department of Oncology, Staff Hospital of Chengde Iron and Steel Group Co. Ltd., Chengde, China
| | - Xiaodong Huo
- Department of Oncology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Zhe Wang
- Department of Radiation Oncology, Affiliated Zhongshan Hospital of Dalian University, Dalian, China
| | - Xinxin Zhao
- Department of Oncology Radiotherapy, The First People's Hospital of Kerqin District, Tongliao, China
| | - Jinchao Dai
- Department of Nuclear Medicine, Qingdao Central Hospital, Qingdao, China
| | - Haitao Wang
- Department of Oncology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Guanglie Chen
- Department of Oncology Radiotherapy, The First People's Hospital of Kerqin District, Tongliao, China
| | - Ruoyu Wang
- Department of Radiation Oncology, Affiliated Zhongshan Hospital of Dalian University, Dalian, China
| | - Yuqing Song
- Department of Oncology, Staff Hospital of Chengde Iron and Steel Group Co. Ltd., Chengde, China
| | - Kaixian Zhang
- Department of Oncology, Tengzhou Central People’s Hospital, Tengzhou, China
| | - Xuequan Huang
- Center of Minimally Invasive Intervention, Southwest Hospital of Army Medical University, Chongqing, China,*Correspondence: Shude Chai, ; Xuequan Huang, ; Junjie Wang,
| | - Shude Chai
- Department of Oncology, The Second Hospital of Tianjin Medical University, Tianjin, China,*Correspondence: Shude Chai, ; Xuequan Huang, ; Junjie Wang,
| | - Junjie Wang
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, China,*Correspondence: Shude Chai, ; Xuequan Huang, ; Junjie Wang,
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Shen Z, Qu A, Jiang P, Jiang Y, Sun H, Wang J. Re-Irradiation for Recurrent Cervical Cancer: A State-of-the-Art Review. Curr Oncol 2022; 29:5262-5277. [PMID: 35892987 PMCID: PMC9331513 DOI: 10.3390/curroncol29080418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/21/2022] [Accepted: 07/21/2022] [Indexed: 11/16/2022] Open
Abstract
The recurrence rate of cervical cancer after primary treatment can reach 60%, and a poor prognosis is reported in most cases. Treatment options for the recurrence of cervical cancer mainly depend on the prior treatment regimen and the location of recurrent lesions. Re-irradiation is still considered as a clinical challenge, owing to a high incidence of toxicity, especially in in-field recurrence within a short period of time. Recent advances in radiotherapy have preliminarily revealed encouraging outcomes of re-irradiation. Several centers have concentrasted on stereotactic body radiation therapy (SBRT) for the treatment of well-selected cases. Meanwhile, as the image-guiding techniques become more precise, a better dose profile can also be achieved in brachytherapy, including high-dose-rate interstitial brachytherapy (HDR-ISBT) and permanent radioactive seed implantation (PRSI). These treatment modalities have shown promising efficacy with a tolerable toxicity, providing further treatment options for recurrent cervical cancer. However, it is highly unlikely to draw a definite conclusion from all of those studies due to the large heterogeneity among them and the lack of large-scale prospective studies. This study mainly reviews and summarizes the progress of re-irradiation for recurrent cervical cancer in recent years, in order to provide potential treatment regimens for the management of re-irradiation.
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Jiang P, Zou L, Wei L, Cheng G, Sun B, Zhang F, Wang R, Wang T, Qu A, Yuan X, Qiu B, Wei S, Liu Z, Zhang Y, Wang J. Chinese Expert Consensus on Iodine 125 Seed Implantation for Recurrent Cervical Cancer in 2021. Front Oncol 2021; 11:700710. [PMID: 34858802 PMCID: PMC8630633 DOI: 10.3389/fonc.2021.700710] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 10/14/2021] [Indexed: 01/07/2023] Open
Abstract
The treatment modality for recurrent cervical cancer (rCC) is limited, and the prognosis of these patients is poor. Seed implantation could be an important component of rCC management in the context of dose boost or salvage therapy after surgery or radiotherapy, which is characterized by a minimally invasive, high local dose, and rapidly does fall, sparing normal tissue. For patients with good performance status and lateral pelvic wall recurrence with an available puncture path, seed implantation was recommended, as well as for selected central pelvic recurrence and extra-pelvic recurrence. The combination of brachytherapy treatment planning system and CT guidance was needed, and three-dimensional printing templates could greatly improve the accuracy, efficiency, and quality of seed implantation to achieve a potential ablative effect and provide an efficient treatment for rCC. However, the recommendations of seed implantation were mainly based on retrospective articles and lack high-quality evidence, and multicenter prospective randomized studies are needed. In this consensus on iodine125 seed implantation for rCC, indication selection, technical process and requirements, dosimetry criteria, radiation protection, combined systemic therapy, and outcomes of seed implantation for rCC are discussed.
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Affiliation(s)
- Ping Jiang
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, China
| | - Lijuan Zou
- Department Radiation Oncology, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Lichun Wei
- Department of Radiation Oncology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Guanghui Cheng
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Baosheng Sun
- Department of Radiation Oncology, Jilin Cancer Hospital, Changchun, China
| | - Fuquan Zhang
- Department of Radiation Oncology, Peking Union Medical College Hospital, Beijing, China
| | - Ruoyu Wang
- Department of Radiation Oncology, Affiliated Zhongshan Hospital of Dalian University, Dalian, China
| | - Tiejun Wang
- Department of Radiation Oncology, The Second Hospital of Jilin University, Changchun, China
| | - Ang Qu
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, China
| | - Xiangkun Yuan
- Department of Radiation Oncology, Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine, Cangzhou, China
| | - Bin Qiu
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, China
| | - Shuhua Wei
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, China
| | - Zi Liu
- Department of Radiation Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xian, China
| | - Yunyan Zhang
- Department of Radiation Oncology, Harbin Medical University Cancer Hospital, Harbin, China
| | - Junjie Wang
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, China
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Wei S, Li C, Li M, Xiong Y, Jiang Y, Sun H, Qiu B, Lin CJ, Wang J. Radioactive Iodine-125 in Tumor Therapy: Advances and Future Directions. Front Oncol 2021; 11:717180. [PMID: 34660280 PMCID: PMC8514864 DOI: 10.3389/fonc.2021.717180] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 09/07/2021] [Indexed: 12/11/2022] Open
Abstract
Radioactive iodine-125 (I-125) is the most widely used radioactive sealed source for interstitial permanent brachytherapy (BT). BT has the exceptional ability to deliver extremely high doses that external beam radiotherapy (EBRT) could never achieve within treated lesions, with the added benefit that doses drop off rapidly outside the target lesion by minimizing the exposure of uninvolved surrounding normal tissue. Spurred by multiple biological and technological advances, BT application has experienced substantial alteration over the past few decades. The procedure of I-125 radioactive seed implantation evolved from ultrasound guidance to computed tomography guidance. Compellingly, the creative introduction of 3D-printed individual templates, BT treatment planning systems, and artificial intelligence navigator systems remarkably increased the accuracy of I-125 BT and individualized I-125 ablative radiotherapy. Of note, utilizing I-125 to treat carcinoma in hollow cavity organs was enabled by the utility of self-expandable metal stents (SEMSs). Initially, I-125 BT was only used in the treatment of rare tumors. However, an increasing number of clinical trials upheld the efficacy and safety of I-125 BT in almost all tumors. Therefore, this study aims to summarize the recent advances of I-125 BT in cancer therapy, which cover experimental research to clinical investigations, including the development of novel techniques. This review also raises unanswered questions that may prompt future clinical trials and experimental work.
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Affiliation(s)
- Shuhua Wei
- Department of Radiation Oncology, Peking University 3rd Hospital, Beijing, China
| | - Chunxiao Li
- Department of Radiation Oncology, Peking University 3rd Hospital, Beijing, China
| | - Mengyuan Li
- Department of Radiation Oncology, Peking University 3rd Hospital, Beijing, China
| | - Yan Xiong
- Department of Radiation Oncology, Peking University 3rd Hospital, Beijing, China
| | - Yuliang Jiang
- Department of Radiation Oncology, Peking University 3rd Hospital, Beijing, China
| | - Haitao Sun
- Department of Radiation Oncology, Peking University 3rd Hospital, Beijing, China
| | - Bin Qiu
- Department of Radiation Oncology, Peking University 3rd Hospital, Beijing, China
| | | | - Junjie Wang
- Department of Radiation Oncology, Peking University 3rd Hospital, Beijing, China
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Ji Z, Sun H, Jiang Y, Chen Y, Guo F, Fan J, Wang J. Analysis on the accuracy of CT-guided radioactive I-125 seed implantation with 3D printing template assistance in the treatment of thoracic malignant tumors. JOURNAL OF RADIATION RESEARCH 2021; 62:910-917. [PMID: 34350955 PMCID: PMC8438469 DOI: 10.1093/jrr/rrab068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/10/2021] [Indexed: 06/13/2023]
Abstract
This article analyzes the accuracy of needle track and dose of a 3-dimensional printing template (3DPT) in the treatment of thoracic tumor with radioactive I-125 seed implantation (RISI). A total of 28 patients were included. The technical process included: (i) preoperative CT positioning, (ii) preoperative planning design, (iii) 3DPT design and printing, (iv) 3DPT alignment, (v) puncture and seed implantation. The errors of needle position and dosimetric parameters were analyzed. A total of 318 needles were used. The mean errors in needle depth, needle insertion point, needle tip and needle angle were 0.52 ± 0.48 cm, 3.4 ± 1.7 mm, 4.4 ± 2.9 mm and 2.8 ± 1.7°, respectively. The differences between actual needle insertion angle and needle depth and those designed in the preoperative were statistically significant (p < 0.05). The mean values of all the errors of the chest wall cases were smaller than those of the lungs, and the differences were statistically significant (p < 0.05). There was no significant difference between the D90 calculated in the postoperative plan and those designed in the preoperative and intraoperative plans (p > 0.05). Some dosimetric parameters of preoperative plans such as V100, V200, CI and HI were not consistent with that of preoperative plans, and the difference was statistically significant (p < 0.05). However, there were no statistical difference in the dosimetric parameters between the postoperative plans and intraoperative plans (p > 0.05). We conclude that for thoracic tumors, even under the guidance of 3DPT, there will be errors. The plan should be optimized in real time during the operation.
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Affiliation(s)
- Zhe Ji
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, China
| | - Haitao Sun
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, China
| | - Yuliang Jiang
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, China
| | - Yi Chen
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, China
| | - Fuxin Guo
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, China
| | - Jinghong Fan
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, China
| | - Junjie Wang
- Corresponding author. Department of Radiation Oncology, Peking University Third Hospital, Beijing 100191, China.
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