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Shimizu H, Koide Y, Haimoto S, Aoyama T, Tachibana H, Hashimoto S, Iwata T, Kitagawa T, Kodaira T. Frequency of and risk factors associated with local recurrence after spinal stereotactic body radiation therapy without surgery. J Neurooncol 2024; 169:563-570. [PMID: 39046598 DOI: 10.1007/s11060-024-04755-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Accepted: 06/20/2024] [Indexed: 07/25/2024]
Abstract
PURPOSE This study aimed to identify factors associated with local recurrence after spinal stereotactic body radiation therapy (SBRT), focusing on patient movement during treatment and tumor characteristics. METHODS A total of 48 patients who underwent spinal SBRT alone without surgery from August 2017 to October 2022 were evaluated. Logistic regression analysis was conducted to identify factors associated with local recurrence, including patient movement and tumor characteristics such as soft tissue involvement and tumor volume. Patient movement during treatment was measured using cone beam computed tomography before and after irradiation. RESULTS Among the included cases, 68.7% and 42.6% had soft tissue involvement and movement exceeding 1 mm, respectively. The median follow-up duration for local recurrence was 11.6 (range: 0.7-44.9) months, whereas the median duration to local recurrence was 6.3 months. Within 12 months, 29.3% of the patients experienced local recurrence, among whom 43.9% moved ≥ 1 mm during treatment, whereas 15.8% did not move. Univariable analysis found that both soft tissue involvement (OR = 10.3, 1.21-87.9; p = 0.033) and patient movement ≥ 1 mm (OR = 5.75, 1.45-22.8; p = 0.013) were associated with local recurrence. Multivariable analysis identified patient movement as an independent prognostic factor for local recurrence (OR = 5.15, 1.06-25.0; p = 0.042). CONCLUSION Our results suggest that patient movement during spinal SBRT was associated with local recurrence, emphasizing the need for better immobilization techniques and shorter delivery times to improve tumor control.
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Affiliation(s)
- Hidetoshi Shimizu
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Nagoya, Japan.
| | - Yutaro Koide
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Shoichi Haimoto
- Department of Neurosurgery, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Takahiro Aoyama
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Hiroyuki Tachibana
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Shingo Hashimoto
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Tohru Iwata
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Tomoki Kitagawa
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Takeshi Kodaira
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
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Koide Y, Haimoto S, Shimizu H, Aoyama T, Kitagawa T, Shindo Y, Nagai N, Hashimoto S, Tachibana H, Kodaira T. Re-irradiation spine stereotactic body radiotherapy following high-dose conventional radiotherapy for metastatic epidural spinal cord compression: a retrospective study. Jpn J Radiol 2024; 42:662-672. [PMID: 38413551 PMCID: PMC11139739 DOI: 10.1007/s11604-024-01539-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 01/22/2024] [Indexed: 02/29/2024]
Abstract
PURPOSE We aimed to evaluate the efficacy and safety of re-irradiation stereotactic body radiation therapy (SBRT) in patients with metastatic epidural spinal cord compression (MESCC) following high-dose conventional radiotherapy. MATERIALS AND METHODS Twenty-one patients met the following eligibility criteria: with an irradiation history of 50 Gy2 equivalent dose in 2-Gy fractions (EQD2) or more, diagnosed MESCC in the cervical or thoracic spines, and treated with re-irradiation SBRT of 24 Gy in 2 fractions between April 2018 and March 2023. Prior treatment was radiotherapy alone, not including surgery. The primary endpoint was a 1-year local failure rate. Overall survival (OS) and treatment-related adverse events were assessed as the secondary endpoints. Since our cohort includes one treatment-related death (TRD) of esophageal perforation, the cumulative esophageal dose was evaluated to find the dose constraints related to severe toxicities. RESULTS The median age was 68, and 14 males were included. The primary tumor sites (esophagus/lung/head and neck/others) were 6/6/7/2, and the median initial radiotherapy dose was 60 Gy2 EQD2 (range: 50-105 Gy2, 60-70/ > 70 Gy2 were 11/4). Ten patients underwent surgery followed by SBRT and 11 SBRT alone. At the median follow-up time of 10.4 months, 17 patients died of systemic disease progression including one TRD. No radiation-induced myelopathy or nerve root injuries occurred. Local failure occurred in six patients, with a 1-year local failure rate of 29.3% and a 1-year OS of 55.0%. Other toxicities included five cases of vertebral compression fractures (23.8%) and one radiation pneumonitis. The cumulative esophageal dose was recommended as follows: Dmax < 203, D0.035 cc < 187, and D1cc < 167 (Gy3 in biological effective dose). CONCLUSION Re-irradiation spine SBRT may be effective for selected patients with cervical or thoracic MESCC, even with high-dose irradiation histories. The cumulative dose assessment across the original and re-irradiated esophagus was recommended to decrease the risk of severe esophageal toxicities.
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Affiliation(s)
- Yutaro Koide
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Kanokoden 1-1, Chikusa-Ku, Nagoya, Aichi, Japan.
| | - Shoichi Haimoto
- Department of Neurosurgery, Aichi Cancer Center Hospital, Chikusa-Ku, Nagoya, Japan
| | - Hidetoshi Shimizu
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Kanokoden 1-1, Chikusa-Ku, Nagoya, Aichi, Japan
| | - Takahiro Aoyama
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Kanokoden 1-1, Chikusa-Ku, Nagoya, Aichi, Japan
| | - Tomoki Kitagawa
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Kanokoden 1-1, Chikusa-Ku, Nagoya, Aichi, Japan
| | - Yurika Shindo
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Kanokoden 1-1, Chikusa-Ku, Nagoya, Aichi, Japan
| | - Naoya Nagai
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Kanokoden 1-1, Chikusa-Ku, Nagoya, Aichi, Japan
| | - Shingo Hashimoto
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Kanokoden 1-1, Chikusa-Ku, Nagoya, Aichi, Japan
| | - Hiroyuki Tachibana
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Kanokoden 1-1, Chikusa-Ku, Nagoya, Aichi, Japan
| | - Takeshi Kodaira
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Kanokoden 1-1, Chikusa-Ku, Nagoya, Aichi, Japan
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Nguyen EK, Ruschin M, Zhang B, Soliman H, Myrehaug S, Detsky J, Chen H, Sahgal A, Tseng CL. Stereotactic body radiotherapy for spine metastases: a review of 24 Gy in 2 daily fractions. J Neurooncol 2023; 163:15-27. [PMID: 37155133 DOI: 10.1007/s11060-023-04327-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 04/24/2023] [Indexed: 05/10/2023]
Abstract
PURPOSE Stereotactic body radiotherapy (SBRT) has proven to be a highly effective treatment for selected patients with spinal metastases. Randomized evidence shows improvements in complete pain response rates and local control with lower retreatment rates favoring SBRT, compared to conventional external beam radiotherapy (cEBRT). While there are several reported dose-fractionation schemes for spine SBRT, 24 Gy in 2 fractions has emerged with Level 1 evidence providing an excellent balance between minimizing treatment toxicity while respecting patient convenience and financial strain. METHODS We provide an overview of the 24 Gy in 2 SBRT fraction regimen for spine metastases, which was developed at the University of Toronto and tested in an international Phase 2/3 randomized controlled trial. RESULTS The literature summarizing global experience with 24 Gy in 2 SBRT fractions suggests 1-year local control rates ranging from 83-93.9%, and 1-year rates of vertebral compression fracture ranging from 5.4-22%. Reirradiation of spine metastases that failed prior cEBRT is also feasible with 24 Gy in 2 fractions, and 1-year local control rates range from 72-86%. Post-operative spine SBRT data are limited but do support the use of 24 Gy in 2 fractions with reported 1-year local control rates ranging from 70-84%. Typically, the rates of plexopathy, radiculopathy and myositis are under 5% in those series reporting mature follow up, with no cases of radiation myelopathy (RM) reported in the de novo setting when the spinal cord avoidance structure is limited to 17 Gy in 2 fractions. However, re-irradiation RM has been observed following 2 fraction SBRT. More recently, 2-fraction dose escalation with 28 Gy, with a higher dose constraint to the critical neural tissues, has been reported suggesting improved rates of local control. This regimen may be important in those patients with radioresistant histologies, high grade epidural disease, and/or paraspinal disease. CONCLUSION The dose-fractionation of 24 Gy in 2 fractions is well-supported by published literature and is an ideal starting point for centers looking to establish a spine SBRT program.
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Affiliation(s)
- Eric K Nguyen
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada
| | - Mark Ruschin
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada
| | - Beibei Zhang
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada
| | - Hany Soliman
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada
| | - Sten Myrehaug
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada
| | - Jay Detsky
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada
| | - Hanbo Chen
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada
| | - Arjun Sahgal
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada
| | - Chia-Lin Tseng
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, 2075 Bayview Avenue, Toronto, ON, M4N 3M5, Canada.
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Shimizu H, Koide Y, Sasaki K, Watanabe Y, Haimoto S, Aoyama T, Tachibana H, Iwata T, Kitagawa T, Kodaira T. Dosimetric analysis on computed tomography myelography based treatment planning in stereotactic body radiotherapy for spinal metastases. Med Dosim 2023:S0958-3947(23)00029-8. [PMID: 37068981 DOI: 10.1016/j.meddos.2023.03.008] [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: 02/04/2023] [Revised: 03/20/2023] [Accepted: 03/20/2023] [Indexed: 04/19/2023]
Abstract
This study aimed to quantitatively evaluate the influence of enhanced contrast on the CT myelography image of the spinal cord and/or cauda equina in addition to the target volume in spine SBRT treatment planning. In total, 19 patients who had previously undergone spine SBRT were randomly selected. The rigid image registration accuracy of CT myelography that aligned with the treatment planning CT was evaluated by calculating the normalized mutual information (NMI) and Pearson's correlation coefficient for the vertebral landmarks. At postregistration, the contrast-enhanced region of the CT myelography image was replaced with water-mass density, and the original treatment plan was recalculated on this image. For comparison, the dose was also recalculated on the contrast-enhanced CT myelography images. The NMI and Pearson's correlation coefficients for landmarks were 0.39 ± 0.12 and 0.97 ± 0.04, respectively. The mean D0.035cc of the spinal cord and/or cauda equina on the CT myelography image with the contrast-enhanced region replaced by water-mass density showed -0.37% ± 0.64% changes compared with that of the treatment planning CT. Conversely, the mean D0.035cc in contrast-enhanced CT myelography changed by -1.39% ± 0.51%. The percentage change in D98% for the planning target volume was confirmed to be small by replacing the contrast-enhanced region with water-mass density (p < 0.01). The dose calculation of the target volume, spinal cord, and/or cauda equina using the CT myelography image that replaced the contrast-enhanced region with water-mass density could be a more appropriate procedure with less dose calculation uncertainty.
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Affiliation(s)
- Hidetoshi Shimizu
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Nagoya, Aichi, 464-8681, Japan.
| | - Yutaro Koide
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Nagoya, Aichi, 464-8681, Japan
| | - Koji Sasaki
- Graduate School of Radiological Technology, Gunma Prefectural College of Health Sciences, Maebashi, Gunma, 371-0052, Japan
| | - Yui Watanabe
- Radiation Therapy Center, Yachiyo Hospital, Anjyo, Aichi, 446-8510, Japan
| | - Shoichi Haimoto
- Department of Neurosurgery, Aichi Cancer Center Hospital, Nagoya, Aichi, 464-8681, Japan
| | - Takahiro Aoyama
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Nagoya, Aichi, 464-8681, Japan; Graduate School of Medicine, Aichi Medical University, Nagakute, Aichi, 480-1195, Japan
| | - Hiroyuki Tachibana
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Nagoya, Aichi, 464-8681, Japan
| | - Tohru Iwata
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Nagoya, Aichi, 464-8681, Japan
| | - Tomoki Kitagawa
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Nagoya, Aichi, 464-8681, Japan
| | - Takeshi Kodaira
- Department of Radiation Oncology, Aichi Cancer Center Hospital, Nagoya, Aichi, 464-8681, Japan
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Gales L, Mitrea D, Chivu B, Radu A, Bocai S, Stoica R, Dicianu A, Mitrica R, Trifanescu O, Anghel R, Serbanescu L. Risk of Myelopathy Following Second Local Treatment after Initial Irradiation of Spine Metastasis. Diagnostics (Basel) 2023; 13:diagnostics13020175. [PMID: 36672985 PMCID: PMC9857541 DOI: 10.3390/diagnostics13020175] [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: 11/30/2022] [Revised: 12/23/2022] [Accepted: 12/27/2022] [Indexed: 01/06/2023] Open
Abstract
Metastatic lesions of the spine occur in up to 40% of cancer patients and are a frequent source of pain and neurologic deficit due to cord compression. Palliative radiotherapy is the main first-intent local treatment in the form of single-fraction radiotherapy or fractionated courses. Reirradiation is a viable option for inoperable patients where spinal decompression is needed but with an increased risk of radiation-induced myelopathy (RM) and subsequent neurologic damage. This review summarizes reported data on local treatment options after initial irradiation in patients with relapsed spine metastasis and key dosimetric correlations between the risk of spinal cord injury and reirradiation technique, total dose, and time between treatments. The Linear Quadratic (LQ) model was used to convert all the published doses into biologically effective doses and normalize them to EQD2. For 3D radiotherapy, authors used cumulative doses from 55.2 Gy2/2 to 65.5 Gy2/2 EQD2 with no cases of RM mentioned. We found little evidence of RM after SBRT in the papers that met our criteria of inclusion, usually at the median reported dose to critical neural tissue around 93.5 Gy2/2. There is a lack of consistency in reporting the spinal cord dose, which leads to difficulty in pooling data.
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Affiliation(s)
- Laurentia Gales
- Department of Oncology, “Carol Davila” University of Medicine & Pharmacy, 020021 Bucharest, Romania
- Department of Oncology, “Prof. Dr. Alexandru Trestioreanu” Institute of Oncology, 022328 Bucharest, Romania
| | - Diana Mitrea
- Department of Radiotherapy, “Prof. Dr. Alexandru Trestioreanu” Institute of Oncology, 022328 Bucharest, Romania
| | - Bogdan Chivu
- Department of Radiotherapy, “Prof. Dr. Alexandru Trestioreanu” Institute of Oncology, 022328 Bucharest, Romania
| | - Adrian Radu
- Department of Radiotherapy, “Prof. Dr. Alexandru Trestioreanu” Institute of Oncology, 022328 Bucharest, Romania
| | - Silvia Bocai
- Department of Radiotherapy, “Prof. Dr. Alexandru Trestioreanu” Institute of Oncology, 022328 Bucharest, Romania
| | - Remus Stoica
- Department of Radiotherapy, Centrul Oncologic Sanador, 010991 Bucharest, Romania
| | - Andrei Dicianu
- Department of Radiotherapy, Clinical Emergency County Hospital, 200642 Craiova, Romania
| | - Radu Mitrica
- Department of Oncology, “Carol Davila” University of Medicine & Pharmacy, 020021 Bucharest, Romania
- Department of Radiotherapy, “Prof. Dr. Alexandru Trestioreanu” Institute of Oncology, 022328 Bucharest, Romania
- Correspondence: (R.M.); (O.T.); Tel.: +40-741964311 (R.M.); +40-745001224 (O.T.)
| | - Oana Trifanescu
- Department of Oncology, “Carol Davila” University of Medicine & Pharmacy, 020021 Bucharest, Romania
- Department of Radiotherapy, “Prof. Dr. Alexandru Trestioreanu” Institute of Oncology, 022328 Bucharest, Romania
- Correspondence: (R.M.); (O.T.); Tel.: +40-741964311 (R.M.); +40-745001224 (O.T.)
| | - Rodica Anghel
- Department of Oncology, “Carol Davila” University of Medicine & Pharmacy, 020021 Bucharest, Romania
- Department of Radiotherapy, “Prof. Dr. Alexandru Trestioreanu” Institute of Oncology, 022328 Bucharest, Romania
| | - Luiza Serbanescu
- Department of Oncology, “Carol Davila” University of Medicine & Pharmacy, 020021 Bucharest, Romania
- Department of Radiotherapy, “Prof. Dr. Alexandru Trestioreanu” Institute of Oncology, 022328 Bucharest, Romania
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Kang DH, Chang BS, Kim H, Hong SH, Chang SY. Separation surgery followed by stereotactic ablative radiotherapy for metastatic epidural spinal cord compression: A systematic review and meta-analysis for local progression rate. J Bone Oncol 2022; 36:100450. [PMID: 35990514 PMCID: PMC9386097 DOI: 10.1016/j.jbo.2022.100450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/22/2022] [Accepted: 07/31/2022] [Indexed: 11/10/2022] Open
Abstract
The pooled 1-year local progression rate of hybrid therapy in spinal metastasis was 10.2%. The pooled 2-year local progression rate of hybrid therapy in spinal metastasis was 13.7%. A lower radiation dose per fraction showed a significant association with the 1-year local progression rate of hybrid therapy in spinal metastasis. History of prior radiotherapy showed a significant association with the 1-year local progression rate of hybrid therapy in spinal metastasis. Colorectal cancer showed a significant association with the 1-year local progression rate of hybrid therapy in spinal metastasis.
Introduction Spinal metastasis is the most common metastatic skeletal disease in cancer patients. Metastatic epidural spinal cord compression (MESCC), which occurs in 5–14% of cancer patients, is an oncological emergency because it may cause a permanent neurological deficit. Separation surgery followed by stereotactic ablative radiotherapy (SABR), so-called “hybrid therapy,” has shown effectiveness in local control of spinal metastasis and has become an integral treatment option for patients with MESCC. Therefore, we performed a meta-analysis and meta-regression analysis to clarify the local progression rate of hybrid therapy and the risk factors for local progression. Methods We searched PubMed, EMBASE, Scopus, Cochrane Library, and Web of Science databases from inception to December 2021. Meta-analyses of proportions were used to analyze the data using a random-effects model to calculate the pooled 1-year local progression rate and confidence interval. Subgroup analyses were performed using meta-analyses of odds ratio (OR) for comparisons between groups. We also conducted a meta-regression analysis to identify the factors that caused heterogeneity. Results A total of 661 patients from 13 studies (10 retrospective and 3 prospective) were included in the final meta-analysis. The quality of the included studies assessed using the Newcastle − Ottawa scale ranged from poor to fair (range, 4–6). The pooled local progression rate was 10.2 % (95 % confidence interval [CI], 7.8–12.8 %; I2 = 30 %) and 13.7 % (95 % CI, 9.3–18.8 %; I2 = 55 %) at postoperative 1 and 2 years, respectively. The subgroup analysis indicated that patients with a history of prior radiotherapy (OR, 5.14; 95 % CI, 1.71–15.51) and lower radiation dose per fraction (OR, 4.57; 95 % CI, 1.88–11.13) showed significantly higher pooled 1-year local progression rates. In the moderator analysis, the 1-year local progression rate was significantly associated with the proportion of patients with a history of prior radiotherapy (p = 0.036) and those with colorectal cancer as primary origin (p < 0.001). Conclusions The pooled 1-year local progression rate of hybrid therapy for MESCC was 10.2%. In subgroup and moderator analyses, a lower radiation dose per fraction, history of prior radiotherapy, and colorectal cancer showed a significant association with the 1-year local progression rate.
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Key Words
- CT, computed tomography
- CTV, clinical target volume
- GTV, gross tumor volume
- Gy, Gray
- Hybrid therapy
- Local progression
- MESCC, metastatic epidural spinal cord compression
- MOOSE, Meta-Analysis of Observational Studies in Epidemiology
- MRI, magnetic resonance imaging
- PRISMA, Preferred Reporting Items for Systematic Reviews and Meta-Analyses
- PTV, planning target volume
- Radioresistance
- SABR, stereotactic ablative radiotherapy
- Separation surgery
- Spinal metastasis
- Stereotactic ablative radiotherapy
- cEBRT, conventional external beam radiation therapy
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Affiliation(s)
- Dong-Ho Kang
- Department of Orthopedic Surgery, Seoul National University College of Medicine and Seoul National University Hospital, 101 Daehangno, Jongno-gu, Seoul, Republic of Korea
| | - Bong-Soon Chang
- Department of Orthopedic Surgery, Seoul National University College of Medicine and Seoul National University Hospital, 101 Daehangno, Jongno-gu, Seoul, Republic of Korea
| | - Hyoungmin Kim
- Department of Orthopedic Surgery, Seoul National University College of Medicine and Seoul National University Hospital, 101 Daehangno, Jongno-gu, Seoul, Republic of Korea
| | - Seong Hwa Hong
- Department of Orthopedic Surgery, Seoul National University College of Medicine and Seoul National University Hospital, 101 Daehangno, Jongno-gu, Seoul, Republic of Korea
| | - Sam Yeol Chang
- Department of Orthopedic Surgery, Seoul National University College of Medicine and Seoul National University Hospital, 101 Daehangno, Jongno-gu, Seoul, Republic of Korea
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Chen X, LeCompte MC, Gui C, Huang E, Khan MA, Hu C, Sciubba DM, Kleinberg LR, Lo SFL, Redmond KJ. Deviation from consensus contouring guidelines predicts inferior local control after spine stereotactic body radiotherapy. Radiother Oncol 2022; 173:215-222. [PMID: 35667571 DOI: 10.1016/j.radonc.2022.05.035] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 05/26/2022] [Accepted: 05/27/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND AND PURPOSE To analyze the impact of target delineation on local control (LC) after stereotactic body radiotherapy (SBRT) for spine metastasis. MATERIALS AND METHODS Patients with de novo metastasis of the spine treated with SBRT, excluding those with prostate or hematologic malignancies, were retrospectively reviewed. Deviations from consensus contouring guidelines included incomplete coverage of involved vertebral compartments, omission of adjacent compartments, or unnecessary circumferential coverage. Univariable and multivariable Cox proportional hazard analyses were performed using death as a competing risk. RESULTS 283 patients with 360 discrete lesions were included with a median follow up of 14.6 months (range 1.2-131.3). The prescription dose was 24-27Gy in 2-3 fractions for the majority of lesions. Median survival after SBRT was 18.3 months (95% confidence interval [CI]: 14.8-22.8). The 1 and 2-year LC rates were 81.1% (95% CI: 75.5-85.6%) and 70.6% (95% CI: 63.2-76.8%), respectively. In total, 60 deviations (16.7%) from consensus contouring guidelines were identified. Deviation from guidelines was associated with inferior LC (1-year LC 63.0% vs 85.5%, p<0.001). GI primary, epidural extension, and paraspinal extension were all associated with inferior LC on univariable analyses. After adjusting for confounding factors, deviation from guidelines was the strongest predictor of inferior LC (HR 3.52, 95% CI: 2.11-5.86, p<0.001). Among guideline-compliant treatments, progressions were mainly in field (61%) and/or epidural (49%), while marginal (42%) and/or epidural progressions (58%) were most common for those with deviations. CONCLUSIONS Adherence to consensus contouring guidelines for spine SBRT is associated with superior LC and fewer marginal misses.
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Affiliation(s)
- Xuguang Chen
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Michael C LeCompte
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Chengcheng Gui
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Ellen Huang
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Majid A Khan
- Department of Radiology, Thomas Jefferson University. Philadelphia, PA, United States
| | - Chen Hu
- Division of Biostatistics and Bioinformatics, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Daniel M Sciubba
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States; Department of Neurosurgery, Zucker School of Medicine at Hofstra/Northwell, North Shore University Hospital. Manhasset, NY, United States
| | - Lawrence R Kleinberg
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Sheng-Fu Larry Lo
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States; Department of Neurosurgery, Zucker School of Medicine at Hofstra/Northwell, North Shore University Hospital. Manhasset, NY, United States
| | - Kristin J Redmond
- Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, United States.
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Guo L, Ke L, Zeng Z, Yuan C, Wu Z, Chen L, Lu L. Stereotactic body radiotherapy for spinal metastases: a review. Med Oncol 2022; 39:103. [DOI: 10.1007/s12032-021-01613-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 11/19/2021] [Indexed: 02/05/2023]
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9
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Utsumi N, Kurosaki H, Miura K, Baba S, Koyama Y. Improvement of Metastatic Spinal Cord Compression After Decompression Surgery and Radiotherapy in a Patient Initially Treated for Rectal Cancer. Cureus 2022; 14:e21134. [PMID: 35186512 PMCID: PMC8846261 DOI: 10.7759/cureus.21134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/11/2022] [Indexed: 11/30/2022] Open
Abstract
Many reports indicate that the prognosis of patients with rectal cancer who have thoracic spine metastases with spinal cord compression is poor. Here, we discuss a case of a patient who achieved an improvement of functional prognosis and long-term survival after undergoing surgery and radiotherapy. We report a case of a 64-year-old female who was found to have metastatic spinal cord compression (MSCC) in the second thoracic vertebra, 10 years after surgery for rectal cancer. She experienced numbness in both legs and had gait difficulties. She underwent posterior decompression surgery and radiotherapy. Her neurological symptoms improved after radiotherapy, and the patient could maintain a standing position without assistance within one week after irradiation. She has since received adjuvant chemotherapy and continues to survive five years six months since MSCC onset.
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Ito K, Sugita S, Nakajima Y, Furuya T, Hiroaki O, Hayakawa S, Hozumi T, Saito M, Karasawa K. Phase II clinical trial of separation surgery followed by stereotactic body radiotherapy for metastatic epidural spinal cord compression. Int J Radiat Oncol Biol Phys 2021; 112:106-113. [PMID: 34715257 DOI: 10.1016/j.ijrobp.2021.07.1690] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 05/24/2021] [Accepted: 07/16/2021] [Indexed: 12/25/2022]
Abstract
BACKGROUND Stereotactic body radiotherapy (SBRT) is a postoperative treatment option for spinal metastases. As data on surgery with SBRT are limited to retrospective studies, this single-center, single-arm, phase II study aimed to prospectively evaluate the outcomes of separation surgery and SBRT for metastatic epidural spinal cord compression (MESCC). METHODS Patients with symptomatic MESCC due to a solid carcinoma were enrolled. The protocol for treatments comprised preoperative embolization, separation surgery, and spine SBRT. Surgical procedures were performed via the posterior approach, with decompression and a fixation procedure. The prescribed dose for spine SBRT was 24 Gy in two fractions. The primary endpoint was the 12-month local failure (LF) rate. The secondary endpoints were ambulatory functions and adverse effects. RESULTS Thirty-three patients were registered between November 2017 and October 2019. All patients satisfied the inclusion criteria, and all but one completed the protocol treatment. Twenty-three patients (70%) had radioresistant lesions. The Bilsky grade at registration was 1c, 2, and 3 in 4, 8, and 21 patients, respectively. The median follow-up duration after registration was 15 (range 3-35) months. Three months after the administration of treatments according to the protocol, 90% of the patients (26/29) had diseases of Bilsky grade ≤ 1. The 12-month LF rate was 13%. Twenty patients could walk normally or with a cane 12 months after registration. Radiation-induced myelopathy, radiculopathy, and vertebral compression fracture were observed in zero, one, and six patients, respectively. CONCLUSIONS Separation surgery with SBRT for MESCC was effective in decompression and long-term local control. These findings warrant larger randomized controlled trials to compare SBRT with conventional radiotherapy.
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Affiliation(s)
- Kei Ito
- Division of Radiation Oncology, Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital.
| | - Shurei Sugita
- Department of Orthopedic surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital
| | - Yujiro Nakajima
- Division of Radiation Oncology, Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital
| | - Tomohisa Furuya
- Division of Radiation Oncology, Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital
| | - Ogawa Hiroaki
- Division of Radiation Oncology, Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital
| | - Sara Hayakawa
- Division of Radiation Oncology, Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital
| | - Takahiro Hozumi
- Department of Orthopedic surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital
| | - Makoto Saito
- Division of Clinical Research Support, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital
| | - Katsuyuki Karasawa
- Division of Radiation Oncology, Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital
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11
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Electron beam intraoperative radiotherapy for metastatic epidural spinal cord compression: a prospective observational study. Clin Exp Metastasis 2021; 38:219-225. [PMID: 33629217 DOI: 10.1007/s10585-021-10078-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 02/11/2021] [Indexed: 10/22/2022]
Abstract
To assess the additional effects of intraoperative radiotherapy (IORT) with decompression surgery and adjuvant external beam radiotherapy (EBRT) for metastatic epidural spinal cord compression (MESCC). This single-arm institutional prospective observational study recruited patients between June 2017 and March 2020 and included those with symptoms of spinal cord compression owing to metastases, who were diagnosed using MRI. Patients with radiation-sensitive primary tumors and those who could not tolerate surgery were excluded. The treatment protocol comprised decompression surgery and electron beam IORT of 20 Gy in a single fraction followed by EBRT of 30 Gy in 10 fractions. The primary endpoints included the 1-year local failure rate and ambulatory functions. The study was closed in May 2019 owing to changes in treatment policies at our institution. Twenty patients were registered between June 2017 and May 2019. Although all patients completed surgery and IORT, 2 did not receive postoperative EBRT. Patients most commonly had colorectal cancer (4 patients), followed by thyroid cancer, renal cell carcinoma, lung cancer, breast cancer, sarcomas, and other cancers (3, 3, 2, 2, 2, and 4 patients, respectively). The median follow-up duration was 16 months (range 2-30 months); the 1-year local failure rate was 16%. On comparing ambulatory functions pre-treatment and at 1 year after treatment, improvement, no change, and worsening were observed in 3, 9, and 0 patients, respectively. This study's findings suggest that decompression surgery and IORT followed by EBRT are effective in achieving local control and maintaining ambulation in patients with MESCC.
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12
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Kotecha R, Dea N, Detsky JS, Sahgal A. Management of recurrent or progressive spinal metastases: reirradiation techniques and surgical principles. Neurooncol Pract 2020; 7:i45-i53. [PMID: 33299573 PMCID: PMC7705530 DOI: 10.1093/nop/npaa045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
With the growing incidence of new cases and the increasing prevalence of patients living longer with spine metastasis, a methodological approach to the management of patients with recurrent or progressive disease is increasing in relevance and importance in clinical practice. As a result, disease management has evolved in these patients using advanced surgical and radiotherapy technologies. Five key goals in the management of patients with spine metastases include providing pain relief, controlling metastatic disease at the treated site, improving neurologic deficits, maintaining or improving functional status, and minimizing further mechanical instability. The focus of this review is on advanced reirradiation techniques, given that the majority of patients will be treated with upfront conventional radiotherapy and further treatment on progression is often limited by the cumulative tolerance of nearby organs at risk. This review will also discuss novel surgical approaches such as separation surgery, minimally invasive percutaneous instrumentation, and laser interstitial thermal therapy, which is increasingly being coupled with spine reirradiation to maximize outcomes in this patient population. Lastly, given the complexities of managing recurrent spinal disease, this review emphasizes the importance of multidisciplinary care from neurosurgery, radiation oncology, medical oncology, neuro-oncology, rehabilitation medicine, and palliative care.
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Affiliation(s)
- Rupesh Kotecha
- Department of Radiation Oncology, Miami Cancer Institute, Baptist Health South Florida, Miami, Florida, US
| | - Nicolas Dea
- Combined Neurosurgical and Orthopaedic Spine Program, Vancouver General Hospital, University of British Columbia, Vancouver, Canada
| | - Jay S Detsky
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre, University of Toronto, Ontario, Canada
| | - Arjun Sahgal
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre, University of Toronto, Ontario, Canada
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13
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Di Perna G, Cofano F, Mantovani C, Badellino S, Marengo N, Ajello M, Comite LM, Palmieri G, Tartara F, Zenga F, Ricardi U, Garbossa D. Separation surgery for metastatic epidural spinal cord compression: A qualitative review. J Bone Oncol 2020; 25:100320. [PMID: 33088700 PMCID: PMC7559860 DOI: 10.1016/j.jbo.2020.100320] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 08/31/2020] [Accepted: 09/07/2020] [Indexed: 02/07/2023] Open
Abstract
Separation surgery is a new concept for metastatic spinal cord compression treatment. Stereotactic radiosurgery increased local control, overcoming radio-resistance’s idea. The surgery goal shifted towards creating targets for radiations avoiding cord damages. Minimal invasive strategies could allow quick return to systemic therapies.
Introduction The new concept of separation surgery has changed the surgical paradigms for the treatment of metastatic epidural spinal cord compression (MESCC), shifting from aggressive cytoreductive surgery towards less invasive surgery with the aim to achieve circumferential separation of the spinal cord and create a safe target for high dose Stereotactic Body Radiation Therapy (SBRT), which turned out to be the real game-changer for disease’s local control. Discussion In this review a qualitative analysis of the English literature has been performed according to the rating of evidence, with the aim to underline the increasingly role of the concept of separation surgery in MESCC treatment. A review of the main steps in the evolution of both radiotherapy and surgery fields have been described, highlighting the important results deriving from their integration. Conclusion Compared with more aggressive surgical approaches, the concept of separation surgery together with the advancements of radiotherapy and the use of SBRT for the treatment of MESCC showed promising results in order to achieve a valuable local control while reducing surgical related morbidities and complications.
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Key Words
- CTV, Clinical tumor volume
- Carbon fiber/PEEK cement
- ECOG PS, Eastern Cooperative Oncology Group Performance Status Scale
- ESCC, Epidural Spinal Cord Compression
- Epidural spinal cord compression
- GTV, Gross tumor volume
- KPS, Karnofsky Performance Status
- LC, Local Control
- LITT, Laser Interstitial Thermal Therapy
- MAS, Minimal Access Spine
- MESCC, Metastatic Epidural Spinal Cord Compression
- MIS techniques
- MIS, Minimally Invasive Surgical
- NSCLC, Non-Small Cell Lung Cancer
- NSE, Neurologic Stability Epidural compression
- PEEK, Polyetheretherketone
- PLL, Posterior Longitudinal Ligament
- PMMA, Poly-Methyl-Methacrylate
- PRV, Spinal cord planning risk volume
- PTV, Planning target volume
- SBRT, Stereotactic Body Radiation Therapy
- SINS, Spinal Instability Neoplastic Score
- SRS, Stereotactic Radiosurgery
- SS, Separation Surgery
- Separation surgery
- Spinal metastases
- Stereotactic body radiation therapy
- cEBRT, conventional External Beam Radiation Therapy
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Affiliation(s)
- Giuseppe Di Perna
- Department of Neuroscience “Rita Levi Montalcini”, Neurosurgery Unit, University of Turin, Turin, Italy
| | - Fabio Cofano
- Department of Neuroscience “Rita Levi Montalcini”, Neurosurgery Unit, University of Turin, Turin, Italy
- Spine Surgery, Humanitas Gradenigo, Turin, Italy
- Corresponding author at: Department of Neuroscience “Rita Levi Montalcini”, Neurosurgery Unit, University of Turin, Via Cherasco 15, 10126 Turin, Italy.
| | - Cristina Mantovani
- Radiation Oncology Unit, Department of Oncology, University of Turin and Città della Salute e della Scienza Hospital, Via Genova 3, 10126 Turin, Italy
| | - Serena Badellino
- Radiation Oncology Unit, Department of Oncology, University of Turin and Città della Salute e della Scienza Hospital, Via Genova 3, 10126 Turin, Italy
| | - Nicola Marengo
- Department of Neuroscience “Rita Levi Montalcini”, Neurosurgery Unit, University of Turin, Turin, Italy
| | - Marco Ajello
- Department of Neuroscience “Rita Levi Montalcini”, Neurosurgery Unit, University of Turin, Turin, Italy
| | - Ludovico Maria Comite
- Department of Neuroscience “Rita Levi Montalcini”, Neurosurgery Unit, University of Turin, Turin, Italy
| | - Giuseppe Palmieri
- Department of Neuroscience “Rita Levi Montalcini”, Neurosurgery Unit, University of Turin, Turin, Italy
| | - Fulvio Tartara
- Neurosurgery Unit, Istituto Clinico Città Studi, Milan, Italy
| | - Francesco Zenga
- Department of Neuroscience “Rita Levi Montalcini”, Neurosurgery Unit, University of Turin, Turin, Italy
| | - Umberto Ricardi
- Radiation Oncology Unit, Department of Oncology, University of Turin and Città della Salute e della Scienza Hospital, Via Genova 3, 10126 Turin, Italy
| | - Diego Garbossa
- Department of Neuroscience “Rita Levi Montalcini”, Neurosurgery Unit, University of Turin, Turin, Italy
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14
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Moraes FY, Chen X, Yan M, Spratt DE, Redmond K, Jackson WC, Yamada YJ. Evolving Role of Stereotactic Body Radiation Therapy in the Management of Spine Metastases: Defining Dose and Dose Constraints. Neurosurg Clin N Am 2020; 31:167-189. [PMID: 32147009 DOI: 10.1016/j.nec.2019.12.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
When treating solid tumor spine metastases, stereotactic high-dose-per-fraction radiation, given in a single fraction or in a hypofractionated approach, has proved to be a highly effective and safe therapeutic option for any tumor histology, in the setting of de novo therapy, as salvage treatment of local progression after previous radiation, and in the postoperative setting. There are variations in practice based on the clinical presentation, goals of therapy, as well as institutional preferences. As a biologically potent therapy, a thoughtful and careful attention to detail with patient selection, treatment planning, and delivery is crucial for treatment success.
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Affiliation(s)
- Fabio Y Moraes
- Department of Oncology, Division of Radiation Oncology, Queen's University, Kingston Health Sciences Centre, Kingston, Ontario, Canada
| | - Xuguang Chen
- Department of Radiation Oncology, Johns Hopkins University, Baltimore, MD, USA
| | - Michael Yan
- Department of Oncology, Division of Radiation Oncology, Queen's University, Kingston Health Sciences Centre, Kingston, Ontario, Canada
| | - Daniel E Spratt
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Kristen Redmond
- Department of Radiation Oncology, Johns Hopkins University, Baltimore, MD, USA
| | - William C Jackson
- Department of Radiation Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Yoshiya Josh Yamada
- Department of Radiation Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
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15
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Shimizu H, Sasaki K, Tanaka H, Aoyama T, Tachibana H, Koide Y, Iwata T, Kitagawa T, Kodaira T. Dosimetric effects of dose calculation grid size on the epidural space dose. Med Dosim 2020; 45:327-333. [DOI: 10.1016/j.meddos.2020.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 03/18/2020] [Accepted: 03/26/2020] [Indexed: 10/24/2022]
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16
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Ito K, Nakamura N, Shimizuguchi T, Ogawa H, Karasawa K. Appropriate endpoints for stereotactic body radiotherapy for bone metastasis: Classification into five treatment groups. Rep Pract Oncol Radiother 2019; 25:150-153. [PMID: 32042273 DOI: 10.1016/j.rpor.2019.12.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Accepted: 12/16/2019] [Indexed: 01/04/2023] Open
Abstract
Treatment of bone metastasis using stereotactic body radiotherapy (SBRT) is being widely used in clinical practice. The reported clinical advantages of SBRT include high pain and local control rates, high response rates against bone metastasis from radio-resistant tumors, and safe re-irradiations. Although most reports in the literature use local control as the primary treatment endpoint, this endpoint is not appropriate because local control does not relate directly to patient benefit. Herein, we proposed five pathophysiology-based patient groups, as well as appropriate endpoints for each group.
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Affiliation(s)
- Kei Ito
- Division of Radiation Oncology, Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, 113-8677, Japan
| | - Naoki Nakamura
- Division of Radiation Oncology and Particle Therapy, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, Japan
| | - Takuya Shimizuguchi
- Division of Radiation Oncology, Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, 113-8677, Japan
| | - Hiroaki Ogawa
- Division of Radiation Oncology, Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, 113-8677, Japan
| | - Katsuyuki Karasawa
- Division of Radiation Oncology, Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, 3-18-22 Honkomagome, Bunkyo-ku, Tokyo, 113-8677, Japan
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17
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Aoyama T, Shimizu H, Isomura T, Kitagawa T, Tanaka K, Kodaira T. [Development of an In-house Couch Model to Improve Dose Attenuation Correction Accuracy for a Couch with Different Thickness in the Superior-inferior Direction]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2019; 75:1125-1134. [PMID: 31631105 DOI: 10.6009/jjrt.2019_jsrt_75.10.1125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
As the couch used in external radiation therapy attenuate radiation by interaction, it is necessary to correct attenuation of radiation by inserting a couch model in the treatment planning systems. For a couch whose thickness is different in the superior-inferior direction, it is possible to perform dose calculations with an error within ±1% by using separate different couch models provided by vendors. However, it is difficult to correct attenuation correction accurately with a single couch model. In this study, we created an in-house couch model which can set couch shape and physical density in detail by acquiring CT images of actual couch. When we performed dose calculation by optimizing the physical densities of in-house and vendor couch, it was found that the difference between the measured and the calculated values can be significantly reduced by using in-house couch model. Additionally, by using in-house couch model, it is found that the dose attenuation can be corrected within ±1% for a couch whose thickness is different in the superior-inferior direction.
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Affiliation(s)
- Takahiro Aoyama
- Department of Radiation Oncology, Aichi Cancer Center Hospital
| | - Hidetoshi Shimizu
- Department of Radiation Oncology, Aichi Cancer Center Hospital.,Graduate School of Radiological Technology, Gunma Prefectural College of Health Sciences
| | - Taiki Isomura
- Department of Radiation Oncology, Aichi Cancer Center Hospital (Current address: Department of Proton Technology, Medipolis Proton Therapy and Research Center)
| | - Tomoki Kitagawa
- Department of Radiation Oncology, Aichi Cancer Center Hospital
| | - Kento Tanaka
- Department of Radiation Oncology, Aichi Cancer Center Hospital (Current address: Department of Radiology, Okazaki City Hospital)
| | - Takeshi Kodaira
- Department of Radiation Oncology, Aichi Cancer Center Hospital
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18
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Gong Y, Xu L, Zhuang H, Jiang L, Wei F, Liu Z, Li Y, Yu M, Ni K, Liu X. Efficacy and safety of different fractions in stereotactic body radiotherapy for spinal metastases: A systematic review. Cancer Med 2019; 8:6176-6184. [PMID: 31489788 PMCID: PMC6797563 DOI: 10.1002/cam4.2546] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 07/28/2019] [Accepted: 08/23/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND In the treatment of spinal metastases, stereotactic body radiotherapy (SBRT) delivers precise, high-dose radiation to the target region while sparing the spinal cord. A range of doses and fractions had been reported; however, the optimal prescribed scheme remains unclear. METHODS Two reviewers performed independent literature searches of the PubMed, EMBASE, Cochrane Database, and Web of Science databases. Articles were divided into one to five fractions groups. The Methodological Index for Non-randomized Studies (MINORS) was used to assess the quality of studies. Local control (LC) and overall survival (OS) were presented for the included studies and a pooled value was calculated by the weighted average. RESULTS The 38 included studies comprised 3,754 patients with 4,731 lesions. The average 1-year LCs for the one to five fractions were 92.7%, 84.6%, 86.8%, 82.6%, and 80.6%, respectively. The average 1-year OS for the one to five fractions were 53.0%, 70.4%, 60.1%, 48%, and 80%, respectively. The 24 Gy/single fraction scheme had a higher 1-year LC (98.1%) than those of 24 Gy/two fractions (85.4%), 27 Gy/three fractions (84.9%), and 24 Gy/three fractions (89.0%). The incidence of vertebral compression fracture was 10.3%, with 10.7% in the single-fraction group and 10.1% in the multi-fraction group. The incidence of radiation-induced myelopathy was 0.19%; three and two patients were treated with single-fraction and multi-fraction SBRT, respectively. The incidence of radiculopathy was 0.30% and all but one patient were treated with multi-fraction SBRT. CONCLUSIONS SBRT provided satisfactory efficacy and acceptable safety for spinal metastases. Single-fraction SBRT demonstrated a higher local control rate than those of the other factions, especially the 24 Gy dose. The risk of vertebral compression fracture (VCF) was slightly higher in single-fraction SBRT and more patients developed radiculopathy after multi-fraction SBRT.
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Affiliation(s)
- Yining Gong
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
| | - Lingyi Xu
- Eight-Year-Program, Grade 2015, Health Science Center, Peking University, Beijing, China
| | - Hongqing Zhuang
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, China
| | - Liang Jiang
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
| | - Feng Wei
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
| | - Zhongjun Liu
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
| | - Yan Li
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
| | - Miao Yu
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
| | - Kaiwen Ni
- Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing, China
| | - Xiaoguang Liu
- Department of Orthopedics, Peking University Third Hospital, Beijing, China
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