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George K, Chopra S, Rajamanickam K, Joshi K, Swamidas J, Shetty N, Engineer R. Evaluation of liver segmental dose threshold for hepatocyte regeneration following liver stereotactic body radiation therapy. Indian J Med Res 2024; 159:232-240. [PMID: 38442296 PMCID: PMC11050757 DOI: 10.4103/ijmr.ijmr_1171_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Indexed: 03/07/2024] Open
Abstract
BACKGROUND OBJECTIVES There is limited evidence studying the relationship of liver segmental dose and segmental volume changes. The segmental dose thresholds could potentially allow for segmental regeneration after liver stereotactic body radiation therapy (SBRT). Given improved survival in hepatocellular cancer (HCC) and liver metastases and more salvage therapy options, this has become an important clinical question to explore. This study assesses the impact of liver segmental dose on segmental volume changes (gain or loss) after SBRT. METHODS Liver segmental contours were delineated on baseline and serial follow up triphasic computed tomography scans. The volumes of total liver and doses to total liver, uninvolved liver and individual segments were noted. A correlation was evaluated between liver/segmental volume and dose using Pearson's correlation. Furthermore, receiver operator's curve (ROC) analysis was performed to find the segmental dose, i.e . predictive for liver volume loss. RESULTS A total of 140 non-tumour liver segments were available for analysis in 21 participants. Overall, 13 participants showed loss of overall liver volume and eight showed gain of overall liver volume. The median dose in segments reporting an increase in volume was 9.1 Gy (7-36 Gy). The median dose in segments losing volume was 15.5 Gy (1-49 Gy). On ROC analysis, segmental dose >11 Gy was associated with volume loss. On univariate analysis, only liver segmental dose contributed to a significant segmental volume loss. INTERPRETATION CONCLUSIONS We propose from the findings of this study that in SBRT for large hepatocellular cancer or liver metastases, liver segments should be individually delineated. Furthermore, 3-5 liver segments may be preferentially subjected to <9 Gy to facilitate hepatocyte regeneration. Preferential sparing of uninvolved liver segments may improve outcomes in liver stereotaxyas lower segmental doses were associated with liver regeneration. This may have implications on future liver SBRT planning where segmental doses may be as important as the mean dose.
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Affiliation(s)
- Karishma George
- Department of Radiation Oncology, Advanced Centre for Treatment, Research and Education in Cancer, Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Supriya Chopra
- Department of Radiation Oncology, Advanced Centre for Treatment, Research and Education in Cancer, Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Karthick Rajamanickam
- Department of Radiation Oncology, Advanced Centre for Treatment, Research and Education in Cancer, Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Kishore Joshi
- Department of Radiation Oncology, Advanced Centre for Treatment, Research and Education in Cancer, Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Jamema Swamidas
- Department of Radiation Oncology, Advanced Centre for Treatment, Research and Education in Cancer, Homi Bhabha National Institute, Mumbai, Maharashtra, India
| | - Nitin Shetty
- Department of Interventional Radiology, Tata Memorial Hospital, Tata Memorial Centre, Mumbai, Maharashtra, India
| | - Reena Engineer
- Department of Radiation Oncology, Tata Memorial Hospital, Tata Memorial Centre, Mumbai, Maharashtra, India
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Hui C, Baclay R, Lau B, von Eyben R, Vitzthum L, Pollom E, Chang DT. Outcomes and Imaging Analysis in Hepatocellular Carcinoma Treated With Stereotactic Body Radiation Therapy. Pract Radiat Oncol 2023; 13:e139-e148. [PMID: 36868725 DOI: 10.1016/j.prro.2022.08.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 08/15/2022] [Accepted: 08/29/2022] [Indexed: 11/05/2022]
Abstract
PURPOSE Although arterial phase enhancement is commonly used to evaluate treatment response for hepatocellular carcinoma, it may not accurately describe response for lesions treated with stereotactic body radiation therapy (SBRT). We aimed to describe the post-SBRT imaging findings to better inform the optimal timing of salvage therapy after SBRT. METHODS AND MATERIALS We retrospectively reviewed patients with hepatocellular carcinoma treated with SBRT from 2006 to 2021 at a single institution with available imaging showing lesions with characteristic arterial enhancement and portal venous washout. Patients were then stratified into 3 groups based on treatment: (1) concurrent SBRT and transarterial chemoembolization, (2) SBRT only, and (3) SBRT followed by early salvage therapy due to persistent enhancement. Overall survival was analyzed with the Kaplan-Meier method, and cumulative incidences were calculated with competing risk analysis. RESULTS We included 82 lesions in 73 patients. The median follow-up time was 22.3 months (range, 2.2-88.1 months). The median time to overall survival was 43.7 months (95% confidence interval, 28.1-57.6 months) and median progression-free survival was 10.5 months (95% confidence interval, 7.2-14.0 months). There were 10 (12.2%) lesions that experienced local progression and there was no difference in rates of local progression between the 3 groups (P = .32). In the SBRT-only group, the median time to resolution of arterial enhancement and washout was 5.3 months (range, 1.6-23.7 months). At 3, 6, 9, and 12 months, 82%, 41%, 13%, and 8% of lesions, respectively, continued to show arterial hyperenhancement. CONCLUSIONS Tumors treated with SBRT may continue to exhibit persistence of arterial hyperenhancement. Without an increase in size of enhancement, continued surveillance may be appropriate for these patients.
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Affiliation(s)
- Caressa Hui
- Department of Radiation Oncology, Stanford University, Stanford, California
| | - Richel Baclay
- Department of Radiation Oncology, Stanford University, Stanford, California
| | - Brianna Lau
- Department of Radiation Oncology, Stanford University, Stanford, California
| | - Rie von Eyben
- Department of Radiation Oncology, Stanford University, Stanford, California
| | - Lucas Vitzthum
- Department of Radiation Oncology, Stanford University, Stanford, California
| | - Erqi Pollom
- Department of Radiation Oncology, Stanford University, Stanford, California
| | - Daniel T Chang
- Department of Radiation Oncology, Stanford University, Stanford, California.
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Matsuo Y. Stereotactic Body Radiotherapy for Hepatocellular Carcinoma: A Brief Overview. Curr Oncol 2023; 30:2493-2500. [PMID: 36826151 PMCID: PMC9956001 DOI: 10.3390/curroncol30020190] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/13/2023] [Accepted: 02/15/2023] [Indexed: 02/22/2023] Open
Abstract
Stereotactic body radiotherapy (SBRT), a type of external beam radiotherapy, yields local control of hepatocellular carcinoma (HCC) at rates as high as 90%. SBRT has been recognized as an alternative therapy for patients for whom standard modalities such as surgery (resection or transplantation) or ablation are deemed unsuitable. SBRT has the potential to improve the prognosis of HCC, as it can be used as an adjunct to other treatment modalities. The assessment of post-SBRT images of the treated tumor and surrounding normal liver tissue requires special attention. Future research is warranted to determine how best to use SBRT versus other therapies and how to combine them.
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Affiliation(s)
- Yukinori Matsuo
- Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan
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Chen G, Jiao D, Peng S, Chen X, Zhang Y, Lin L, Zhong Z, Li Y, Xu K, Zhang F. Peritumoral abnormalities on dynamic-enhanced CT after brachytherapy for hepatic malignancies: local progression or benign changes? Eur Radiol 2022; 32:7307-7319. [PMID: 35980429 PMCID: PMC9474341 DOI: 10.1007/s00330-022-09074-x] [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: 04/30/2022] [Revised: 07/26/2022] [Accepted: 07/29/2022] [Indexed: 11/06/2022]
Abstract
Objectives To determine if dynamic CT can differentiate local progression from radioactive seed-induced peritumoral reaction (RSIPR) after brachytherapy with iodine-125 radioactive seeds (BIRS) for advanced hepatic malignancies. Methods Enhanced CT images of seed-implanted lesions between 2006 and 2018 were retrospectively evaluated. Hounsfield units of peritumoral parenchyma were measured and assessed quantitatively. The classification, conversion, consequences, and serological indicators during follow-up were recorded and quantified. Statistical differences were analyzed using a Pearson χ2 test. Results RSIPR was observed in 201 of 290 (69.3%) lesions (161 patients; median age, 55 years; range, 26–79 years), while local progression occurred in 53 lesions. The low density of local progression was much lower than that of RSIPR (p < 0.001), and the former did not exhibit iso-/high density in the portal or equilibrium phase. Ring-like enhancement in progressive lesions was also quite different from RSIPR. Local progression rate was lower for lesions with RSIPR than for those without RSIPR (14.9% vs 25.8%; p = 0.03), and their doses were different (397.2 Gy vs 120.3 Gy, p < 0.001). Conclusions Radioactive seed-induced peritumoral reaction has characteristic manifestations on CT images, which is associated with a higher dose of lesions and lower local progression rate. Notably, the enhancement pattern of local progression was distinct from RSIPR and was clearly distinguishable on dynamic-enhanced CT. Key Points • Radioactive seed-induced peritumoral reaction after brachytherapy with125I seeds for liver malignancies has characteristic manifestations on CT images, which is associated with a higher dose of lesions (397.2 Gy vs 120.3 Gy, p < 0.001), as a focal radiation injury. • Lesions with RSIPR were less likely to develop local progression, while those without RSIPR had a higher rate of local progression (14.9% vs 25.8%; p = 0.03). • The enhancement pattern of local progression after brachytherapy was distinct from radioactive seed-induced peritumoral reaction and was clearly distinguishable on dynamic-enhanced CT. Supplementary Information The online version contains supplementary material available at 10.1007/s00330-022-09074-x.
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Affiliation(s)
- Guanyu Chen
- Department of Minimally Invasive & Interventional Radiology, State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, Guangdong, 510060, People's Republic of China
| | - Dechao Jiao
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, People's Republic of China
| | - Sheng Peng
- Department of Ultrasound, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People's Republic of China
| | - Xi Chen
- Department of Minimally Invasive & Interventional Radiology, State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, Guangdong, 510060, People's Republic of China
| | - Yanling Zhang
- School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, 510000, People's Republic of China
| | - Letao Lin
- Department of Minimally Invasive & Interventional Radiology, State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, Guangdong, 510060, People's Republic of China
| | - Zhihui Zhong
- Department of Minimally Invasive & Interventional Radiology, State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, Guangdong, 510060, People's Republic of China
| | - Yong Li
- Department of Intervention, Zhuhai People's Hospital, Zhuhai, 519000, People's Republic of China
| | - Kaihao Xu
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, People's Republic of China
| | - Fujun Zhang
- Department of Minimally Invasive & Interventional Radiology, State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, Guangdong, 510060, People's Republic of China.
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Nehlsen AD, Sindhu KK, Wolken T, Khan F, Kyriakakos CK, Ward SC, Moshier E, Taouli B, Buckstein M. Characterization and Prediction of Signal Intensity Changes in Normal Liver Parenchyma on Gadoxetic Acid-enhanced MRI Scans after Liver-directed Radiation Therapy. Radiol Imaging Cancer 2022; 4:e210100. [PMID: 35904411 PMCID: PMC9358658 DOI: 10.1148/rycan.210100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 05/17/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
Purpose To better characterize and understand the significance of focal liver reaction (FLR) development in a large cohort of patients who underwent gadoxetic acid-enhanced MRI after being treated with radiation therapy (RT) for hepatobiliary tumors. Materials and Methods This retrospective study evaluated 100 patients (median age, 65 years [first and third quartiles, 60-69 years]; 80 men) who underwent RT for hepatocellular carcinoma, bile duct tumors, or liver metastases at Mount Sinai Hospital between March 1, 2018, and February 29, 2020. CT simulation scans were fused to MRI scans obtained 1-6 months and 6-12 months after RT, using the hepatobiliary phase of the MRI. To define FLR volume, two radiation oncologists independently delineated the borders of the hypointensity observed on MRI scans in the liver region where RT was delivered. Biologically effective dose (BED) thresholds for the formation of FLRs were calculated, along with albumin-bilirubin (ALBI) scores and grades, and overall survival. Results Most patients developed FLRs, which decreased in volume over time. Median BED threshold values for FLR development were 63.6 Gy at 1-6 months and 88.7 Gy at 6-12 months. While higher baseline ALBI scores were associated with a lower rate of FLRs, there was a significant association between FLR volume and increase in ALBI score at 1-6 months (P = .048). Twelve- and 24-month survival estimates for the cohort were 81% and 48%, respectively. Histopathologic analysis of seven explanted liver specimens demonstrated findings consistent with radiation-induced liver disease. Conclusion FLRs were a clear measure of liver damage after RT and were associated with the development of liver dysfunction and focal radiation-induced liver disease. Keywords: MRI, Radiation Therapy Supplemental material is available for this article. © RSNA, 2022.
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Okada M, Numata K, Nihonmatsu H, Tomita K, Takeda A, Tago K, Hyodo T, Eriguchi T, Nakano M. Pathological Appearance of Focal Liver Reactions after Radiotherapy for Hepatocellular Carcinoma. Diagnostics (Basel) 2022; 12:1072. [PMID: 35626228 PMCID: PMC9139971 DOI: 10.3390/diagnostics12051072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 04/21/2022] [Accepted: 04/21/2022] [Indexed: 11/30/2022] Open
Abstract
We studied five pathological specimens from five patients at 1.5, 3.0, 4.0, 13.5, and 14.0 months after radiotherapy for HCC. Four needle biopsies were obtained to investigate liver parenchyma of focal liver reaction (FLR) around treated HCC, when patients had newly developed HCC or local recurrence appeared in the liver. Liver resection was performed in one case where insufficient radiotherapy effect for HCC was suspected. In all patients, FLR was recognized as a hypervascular area around the HCC on enhanced CT and enhanced Gd-EOB-DTPA (EOB-MRI). Liver specimens were analyzed to assess the pathological characteristics of FLR. FLR was recognized as prolonged liver enhancement in enhanced CT and EOB-MRI. From pathological understanding, sinusoidal dilatation with degeneration and desquamation was caused by direct endothelial cell injury following radiotherapy. Hepatocytes and endothelium fell off, and so the portal tract came close, and hepatic arteries increase simultaneously, resulting in FLR around HCC after radiotherapy. In conclusion, the prolapse of hepatocytes and sinusoidal endothelium induced neovascularization of hepatic arteries due to the repair mechanisms; in addition, these prolapse may shorten the distance between each portal region and the hepatic arteries flowing through the portal region become more prominent in FLR.
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Affiliation(s)
- Masahiro Okada
- Department of Radiology, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Tokyo, Japan;
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Kanagawa, Japan; (K.N.); (H.N.)
| | - Kazushi Numata
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Kanagawa, Japan; (K.N.); (H.N.)
| | - Hiromi Nihonmatsu
- Gastroenterological Center, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Kanagawa, Japan; (K.N.); (H.N.)
| | - Kengo Tomita
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Defense Medical College, 3-2 Namiki, Tokorozawa-shi 359-8513, Saitama, Japan;
| | - Atsuya Takeda
- Radiation Oncology Center, Ofuna Chuo Hospital, 6-2-24, Ofuna, Kamakura 247-0056, Kanagawa, Japan; (A.T.); (T.E.)
| | - Kenichiro Tago
- Department of Radiology, Nihon University School of Medicine, Itabashi-ku, Tokyo 173-8610, Tokyo, Japan;
| | - Tomoko Hyodo
- Department of Radiology, Kindai University Faculty of Medicine, 377-2 Ohno-Higashi, Osaka-Sayama 589-8511, Osaka, Japan;
| | - Takahisa Eriguchi
- Radiation Oncology Center, Ofuna Chuo Hospital, 6-2-24, Ofuna, Kamakura 247-0056, Kanagawa, Japan; (A.T.); (T.E.)
| | - Masayuki Nakano
- Department of Pathology, Yokohama City University Medical Center, 4-57 Urafune-cho, Minami-ku, Yokohama 232-0024, Kanagawa, Japan;
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Kimura T, Takeda A, Tsurugai Y. In Reply to Li et al. Int J Radiat Oncol Biol Phys 2021; 110:616-617. [PMID: 33989585 DOI: 10.1016/j.ijrobp.2020.12.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 12/28/2020] [Indexed: 10/21/2022]
Affiliation(s)
- Tomoki Kimura
- Department of Radiation Oncology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan; Department of Radiology, Division of Radiation Oncology, Kochi Medical School, Kochi University, Kochi, Japan
| | - Atsuya Takeda
- Radiation Oncology Center, Ofuna Chuo Hospital, Kamakura, Japan
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Funaoka A, Numata K, Takeda A, Saigusa Y, Tsurugai Y, Nihonmatsu H, Chuma M, Fukuda H, Okada M, Nakano M, Maeda S. Use of Contrast-Enhanced Ultrasound with Sonazoid for Evaluating the Radiotherapy Efficacy for Hepatocellular Carcinoma. Diagnostics (Basel) 2021; 11:diagnostics11030486. [PMID: 33803373 PMCID: PMC7998355 DOI: 10.3390/diagnostics11030486] [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: 01/29/2021] [Revised: 03/02/2021] [Accepted: 03/05/2021] [Indexed: 01/05/2023] Open
Abstract
Radiotherapy is one of the available curative therapies for hepatocellular carcinoma (HCC). We investigate the use of contrast-enhanced ultrasound using Sonazoid (SCEUS) in evaluating the efficacy of radiotherapy for HCC. We enrolled 59 patients with 59 HCCs in this retrospective study. Tumor size and tumor vascularity were evaluated using SCEUS before and 1, 3, 7, 10, and 13 months after radiotherapy. The median follow-up period was 44.5 months (range: 16–82 months). Of the HCCs, 95% (56/59) had no local recurrence, while 5% (3/59) did. At 13 months after radiotherapy, in cases with no local recurrence, SCEUS showed a reduction in tumor vascularity in all cases, while tumor size reduction (>30% reduction, compared with pre-radiotherapy) was observed in 82.1% (46/56). In all three cases of local recurrence, vascularity and tumor size reduction were not observed during the follow-up period and residual HCCs were demonstrated pathologically. Compared with cases with local recurrence, tumor size reduction and reduction in tumor vascularity (p < 0.001) were significantly greater in cases with no local recurrence at 13 months after radiotherapy. SCEUS may be useful in evaluating radiotherapy efficacy for HCC.
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Affiliation(s)
- Akihiro Funaoka
- Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Kanagawa 232-0024, Japan; (A.F.); (H.N.); (M.C.); (H.F.)
- Division of Gastroenterology, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa 236-0004, Japan;
| | - Kazushi Numata
- Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Kanagawa 232-0024, Japan; (A.F.); (H.N.); (M.C.); (H.F.)
- Correspondence: ; Tel.: +81-45-261-5656
| | - Atsuya Takeda
- Radiation Oncology Center, Ofuna Chuo Hospital, Kamakura, Kanagawa 247-0056, Japan; (A.T.); (Y.T.)
| | - Yusuke Saigusa
- Department of Biostatistics, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa 236-0004, Japan;
| | - Yuichirou Tsurugai
- Radiation Oncology Center, Ofuna Chuo Hospital, Kamakura, Kanagawa 247-0056, Japan; (A.T.); (Y.T.)
| | - Hiromi Nihonmatsu
- Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Kanagawa 232-0024, Japan; (A.F.); (H.N.); (M.C.); (H.F.)
| | - Makoto Chuma
- Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Kanagawa 232-0024, Japan; (A.F.); (H.N.); (M.C.); (H.F.)
| | - Hiroyuki Fukuda
- Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Kanagawa 232-0024, Japan; (A.F.); (H.N.); (M.C.); (H.F.)
| | - Masahiro Okada
- Department of Radiology, Nihon University School of Medicine, Tokyo 173-8610, Japan;
| | - Masayuki Nakano
- Tokyo Central Pathology Laboratory, Hachioji, Tokyo 192-0024, Japan;
| | - Shin Maeda
- Division of Gastroenterology, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa 236-0004, Japan;
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Rim CH, Lee HY, Kim JS, Kim H. Radiofrequency ablation and stereotactic body radiotherapy for hepatocellular carcinoma: should they clash or reconcile? Int J Radiat Biol 2020; 97:111-119. [PMID: 33253598 DOI: 10.1080/09553002.2021.1857453] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Until a few decades ago, surgical resection was the only valid option for treating hepatocellular carcinoma (HCC). However, various locoregional modalities including arterial-directed therapy, radiofrequency ablation (RFA), and radiotherapy have been recently shown to be effective. RFA is now established as a standard treatment for small localized HCCs, showing oncological results comparable to those of surgical resection in randomized studies. Stereotactic body radiotherapy (SBRT) is a modern radiotherapeutic modality that targets tumors with precision and delivers high radiation doses over a short period of time; it has particularly attracted clinical interest after its therapeutic efficacy was found to be similar to that of surgery in early-stage lung cancer. Given its potent disease control capability, SBRT has also been applied to early HCCs and demonstrated promising results in recent studies. It has also been noted for its suitability to treat tumors located in anatomical locations where RFA would be challenging. However, since its effectiveness has not been compared to that of RFA in randomized studies of patients eligible for RFA, the use of SBRT has been debated. This review was conducted to guide physicians from all fields involved in the treatment of early HCC. The therapeutic characteristics and indications of both SBRT and RFA are described, and recent comparative studies between the two modalities are discussed. In addition, we examined the factors that should be considered when selecting the appropriate treatments, and offer our recommendations.
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Affiliation(s)
- Chai Hong Rim
- Department of Radiation Oncology, Korea University Ansan Hospital, Gyeonggido, Korea
| | - Hye Yoon Lee
- Department of General Surgery, Korea University Ansan Hospital, Gyeonggido, Korea
| | - Jung Sun Kim
- Department of Medical Oncology, Korea University Ansan Hospital, Gyeonggido, Korea
| | - Hakyoung Kim
- Department of Radiation Oncology, Korea University Guro Hospital, Seoul, Korea
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Pursley J, El Naqa I, Sanford NN, Noe B, Wo JY, Eyler CE, Hwang M, Brock KK, Yeap BY, Wolfgang JA, Hong TS, Grassberger C. Dosimetric Analysis and Normal-Tissue Complication Probability Modeling of Child-Pugh Score and Albumin-Bilirubin Grade Increase After Hepatic Irradiation. Int J Radiat Oncol Biol Phys 2020; 107:986-995. [PMID: 32353390 DOI: 10.1016/j.ijrobp.2020.04.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 04/08/2020] [Accepted: 04/19/2020] [Indexed: 02/07/2023]
Abstract
PURPOSE This study aimed to develop robust normal-tissue complication probability (NTCP) models for patients with hepatocellular carcinoma treated with radiation therapy (RT) using Child-Pugh (CP) score and albumin-bilirubin (ALBI) grade increase as endpoints for hepatic toxicity. METHODS AND MATERIALS Data from 108 patients with hepatocellular carcinoma treated with RT between 2008 and 2017 were evaluated, of which 47 patients (44%) were treated with proton RT. Of these patients, 29 received stereotactic body RT and 79 moderately hypofractionated RT to median physical tumor doses of 43 Gy in 5 fractions and 59 Gy in 15 fractions, respectively. A generalized Lyman-Kutcher-Berman (LKB) model was used to model the NTCP using 2 clinical endpoints, both evaluated at 3 months after RT: CP score increase of ≥2 and ALBI grade increase of ≥1 from the pre-RT baseline. Confidence intervals on LKB fit parameters were determined using bootstrap resampling. RESULTS Compared with previous NTCP models, this study found a stronger correlation between normal liver volume receiving low doses of radiation (5-10 Gy) and a CP score or ALBI grade increase. A CP score increase exhibited a stronger correlation to normal liver volumes irradiated than an ALBI grade increase. LKB models for CP increase found values for the volume-effect parameter of a = 0.06 for all patients, and a = 0.02/0.09 when fit to photon/proton patients separately. Subset analyses for patients with superior initial liver functions showed consistent dose-volume effects (a = 0.1) and consistent dose-response relationships. CONCLUSIONS This study presents an update of liver NTCP models in the era of modern RT techniques using relevant endpoints of hepatic toxicity, CP score and ALBI grade increase. The results show a stronger influence of low-dose bath on hepatic toxicity than those found in previous studies, indicating that RT techniques that minimize the low-dose bath may be beneficial for patients.
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Affiliation(s)
- Jennifer Pursley
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts
| | - Issam El Naqa
- Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan
| | - Nina N Sanford
- Department of Radiation Oncology, University of Texas Southwestern, Dallas, Texas
| | - Bridget Noe
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts
| | - Jennifer Y Wo
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts
| | - Christine E Eyler
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts
| | - Matthew Hwang
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts
| | - Kristy K Brock
- Department of Imaging Physics, The University of Texas, MD Anderson Cancer Center, Houston, Texas
| | - Beow Y Yeap
- Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts
| | - John A Wolfgang
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts
| | - Theodore S Hong
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts
| | - Clemens Grassberger
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, Massachusetts.
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Takahashi H, Sekino Y, Mori K, Okumura T, Nasu K, Fukuda K, Masuoka S, Iizumi T, Hasegawa N, Sakurai H, Minami M. Indicator for local recurrence of hepatocellular carcinoma after proton beam therapy: analysis of attenuation difference between the irradiated tumor and liver parenchyma on contrast enhancement CT. Br J Radiol 2019; 93:20190375. [PMID: 31670572 DOI: 10.1259/bjr.20190375] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES We aimed to identify dynamic CT features that can be used for prediction of local recurrence of hepatocellular carcinoma (HCC) after proton beam therapy (PBT). METHODS We retrospectively retrieved CT scans of patients with PBT-treated HCC, taken between January 2004 and December 2016. 17 recurrent lesions and 34 non-recurrent lesions were retrieved. The attenuation difference between irradiated tumor and irradiated parenchyma (ADHCC-IP) was compared in the two groups by using the Mann-Whitney U test. Cut-off value of ADHCC-IP was estimated by using the Youden index. RESULTS The follow-up time after PBT initiation ranged from 374 to 2402 days (median, 1069 days) in recurrent lesions, and 418 to 2923 days (median, 1091.5 days) in non-recurrent lesions (p = 0.892). The time until appearance of local recurrence after PBT initiation ranged from 189 to 2270 days (median, 497 days). ADHCC-IP of recurrent lesions [mean, -21.8 Hounsfield units (HU); from -95 to -31 HU] was significantly greater than that of non-recurrent lesions (mean, -51.7 HU; from -117 to -12 HU) at 1-2 years in portal venous phase (p = 0.039). 5-year local tumor control rates were 0.93 and 0.56 in lesions with ADHCC-IP at 1-2 years in PVP < -55 and ≥ -55 HU, respectively. CONCLUSION The attenuation difference between irradiated HCC and irradiated liver parenchyma in portal venous phase at 1-2 years after PBT can predict long-term local recurrence of HCC after treatment. ADVANCES IN KNOWLEDGE We identified a cut-off value for contrast enhancement of HCC after PBT that could predict future local recurrence.
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Affiliation(s)
- Hiroaki Takahashi
- University of Tsukuba Hospital, Department of Diagnostic and Interventional Radiology, Ibaraki, Japan
| | - Yuta Sekino
- University of Tsukuba Hospital, Department of Radiation Oncology and Proton Medical Research Center, Ibaraki, Japan
| | - Kensaku Mori
- University of Tsukuba Hospital, Department of Diagnostic and Interventional Radiology, Ibaraki, Japan
| | - Toshiyuki Okumura
- University of Tsukuba Hospital, Department of Radiation Oncology and Proton Medical Research Center, Ibaraki, Japan
| | - Katsuhiro Nasu
- University of Tsukuba Hospital, Department of Diagnostic and Interventional Radiology, Ibaraki, Japan
| | - Kuniaki Fukuda
- University of Tsukuba Hospital, Department of Gastroenterology, Ibaraki, Japan
| | - Sota Masuoka
- University of Tsukuba Hospital, Department of Diagnostic and Interventional Radiology, Ibaraki, Japan
| | - Takashi Iizumi
- University of Tsukuba Hospital, Department of Radiation Oncology and Proton Medical Research Center, Ibaraki, Japan
| | - Naoyuki Hasegawa
- University of Tsukuba Hospital, Department of Gastroenterology, Ibaraki, Japan
| | - Hideyuki Sakurai
- University of Tsukuba Hospital, Department of Radiation Oncology and Proton Medical Research Center, Ibaraki, Japan
| | - Manabu Minami
- University of Tsukuba Hospital, Department of Diagnostic and Interventional Radiology, Ibaraki, Japan
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Song SH, Jeong WK, Choi D, Kim YK, Park HC, Yu JI. Evaluation of early treatment response to radiotherapy for HCC using pre- and post-treatment MRI. Acta Radiol 2019; 60:826-835. [PMID: 30282483 DOI: 10.1177/0284185118805253] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- So Hee Song
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Woo Kyoung Jeong
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Dongil Choi
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Young Kon Kim
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hee Chul Park
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jeong Il Yu
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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13
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Lo EC, N. Rucker A, Federle MP. Hepatocellular Carcinoma and Intrahepatic Cholangiocarcinoma: Imaging for Diagnosis, Tumor Response to Treatment and Liver Response to Radiation. Semin Radiat Oncol 2018; 28:267-276. [DOI: 10.1016/j.semradonc.2018.06.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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14
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FDG-Avid Focal Liver Reaction From Proton Therapy in a Patient With Primary Esophageal Adenocarcinoma. Clin Nucl Med 2018; 43:e139-e141. [PMID: 29561521 DOI: 10.1097/rlu.0000000000002035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
A 25-year-old man with IgA deficiency was treated with 2 months of chemotherapy and proton therapy for gastroesophageal junction adenocarcinoma. Restaging PET/CT 18 days posttherapy demonstrated 2 new foci of increased FDG uptake in the left hepatic lobe, which were favored to represent radiation injury as opposed to new metastases. Follow-up MRI with contrast 2 weeks later demonstrated hypoenhancement and T1/T2 hypointensity in the liver, without restricted diffusion, which correlated with the dominant FDG-avid focus. The hepatic lesions resolved on subsequent FDG PET/CT and MRI studies, confirming the diagnosis of acute radiation injury.
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15
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Direct dose correlation of MRI morphologic alterations of healthy liver tissue after robotic liver SBRT. Strahlenther Onkol 2018; 194:414-424. [PMID: 29404626 DOI: 10.1007/s00066-018-1271-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 01/16/2018] [Indexed: 12/23/2022]
Abstract
PURPOSE For assessing healthy liver reactions after robotic SBRT (stereotactic body radiotherapy), we investigated early morphologic alterations on MRI (magnetic resonance imaging) with respect to patient and treatment plan parameters. PATIENTS AND METHODS MRI data at 6-17 weeks post-treatment from 22 patients with 42 liver metastases were analyzed retrospectively. Median prescription dose was 40 Gy delivered in 3-5 fractions. T2- and T1-weighted MRI were registered to the treatment plan. Absolute doses were converted to EQD2 (Equivalent dose in 2Gy fractions) with α/β-ratios of 2 and 3 Gy for healthy, and 8 Gy for modelling pre-damaged liver tissue. RESULTS Sharply defined, centroid-shaped morphologic alterations were observed outside the high-dose volume surrounding the GTV. On T2-w MRI, hyperintensity at EQD2 isodoses of 113.3 ± 66.1 Gy2, 97.5 ± 54.7 Gy3, and 66.5 ± 32.0 Gy8 significantly depended on PTV dimension (p = 0.02) and healthy liver EQD2 (p = 0.05). On T1-w non-contrast MRI, hypointensity at EQD2 isodoses of 113.3 ± 49.3 Gy2, 97.4 ± 41.0 Gy3, and 65.7 ± 24.2 Gy8 significantly depended on prior chemotherapy (p = 0.01) and total liver volume (p = 0.05). On T1-w gadolinium-contrast delayed MRI, hypointensity at EQD2 isodoses of 90.6 ± 42.5 Gy2, 79.3 ± 35.3 Gy3, and 56.6 ± 20.9 Gy8 significantly depended on total (p = 0.04) and healthy (p = 0.01) liver EQD2. CONCLUSIONS Early post-treatment changes in healthy liver tissue after robotic SBRT could spatially be correlated to respective isodoses. Median nominal doses of 10.1-11.3 Gy per fraction (EQD2 79-97 Gy3) induce characteristic morphologic alterations surrounding the lesions, potentially allowing for dosimetric in-vivo accuracy assessments. Comparison to other techniques and investigations of the short- and long-term clinical impact require further research.
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16
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Local Control After Stereotactic Body Radiation Therapy for Liver Tumors. Int J Radiat Oncol Biol Phys 2018; 110:188-195. [PMID: 29395629 DOI: 10.1016/j.ijrobp.2017.12.288] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 12/29/2017] [Indexed: 12/15/2022]
Abstract
PURPOSE To quantitatively evaluate published experiences with hepatic stereotactic body radiation therapy (SBRT), to determine local control rates after treatment of primary and metastatic liver tumors and to examine whether outcomes are affected by SBRT dosing regimen. METHODS AND MATERIALS We identified published articles that reported local control rates after SBRT for primary or metastatic liver tumors. Biologically effective doses (BEDs) were calculated for each dosing regimen using the linear-quadratic equation. We excluded series in which a wide range of BEDs was used. Individual lesion data for local control were extracted from actuarial survival curves, and data were aggregated to form a single dataset. Actuarial local control curves were generated using the Kaplan-Meier method after grouping lesions by disease type and BED (<100 Gy10 vs >100 Gy10). Comparisons were made using log-rank testing. RESULTS Thirteen articles met all inclusion criteria and formed the dataset for this analysis. The 1-, 2-, and 3-year actuarial local control rates after SBRT for primary liver tumors (n = 431) were 93%, 89%, and 86%, respectively. Lower 1- (90%), 2- (79%), and 3-year (76%) actuarial local control rates were observed for liver metastases (n = 290, log-rank P = .011). Among patients treated with SBRT for primary liver tumors, there was no evidence that local control is influenced by BED within the range of schedules used. For liver metastases, on the other hand, outcomes were significantly better for lesions treated with BEDs exceeding 100 Gy10 (3-year local control 93%) than for those treated with BEDs of ≤100 Gy10 (3-year local control 65%, P < .001). CONCLUSIONS Stereotactic body radiation therapy for primary liver tumors provides high rates of durable local control, with no clear evidence for a dose-response relationship among commonly utilized schedules. Excellent local control rates are also seen after SBRT for liver metastases when BEDs of >100 Gy10 are utilized.
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17
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Zeng ZC, Seong J, Yoon SM, Cheng JCH, Lam KO, Lee AS, Law A, Zhang JY, Hu Y. Consensus on Stereotactic Body Radiation Therapy for Small-Sized Hepatocellular Carcinoma at the 7th Asia-Pacific Primary Liver Cancer Expert Meeting. Liver Cancer 2017; 6:264-274. [PMID: 29234630 PMCID: PMC5704685 DOI: 10.1159/000475768] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Stereotactic body radiation therapy (SBRT) is an advanced technique of external beam radiation therapy that delivers large ablative doses of radiation. In the past decade, many cancer centers have adopted SBRT as one mode of radically treating small-sized hepatocellular carcinoma (HCC), based on encouraging clinical outcomes. SBRT thus seems reasonable as first-line treatment of inoperable HCC confined to the liver. However, most of the clinical studies to date have been retrospective in nature, with key issues still under investigation. SUMMARY The above-mentioned publications were subjected to scrutiny, fueling discussions at the 7th Asia-Pacific Primary Liver Cancer Expert (APPLE 2016) Meeting on various clinical variables, such as indications for SBRT, therapeutic outcomes, treatment-related toxicities, doses prescribed, and specific techniques. The consensus reached should be of interest to all professionals active in the treatment of HCC, especially radiation oncologists. KEY MESSAGES SBRT is a safe and effective therapeutic option for patients with small-sized HCC, offering substantial local control, improved overall survival, and low toxicity.
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Affiliation(s)
- Zhao-Chong Zeng
- Department of Radiation Oncology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jinsil Seong
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Korea,*Jinsil Seong, MD, PhD, Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University Health System, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 120-752 (Korea), E-Mail , Zhao-Chong Zeng, MD, PhD, Department of Radiation Oncology, Zhongshan Hospital, Fudan University, 136 Yi Xue Yuan Road, Shanghai 200032 (China), E-Mail
| | - Sang Min Yoon
- Department of Radiation Oncology, Asan Liver Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | | | - Ka-On Lam
- Department of Clinical Oncology, Queen Mary Hospital, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, China
| | - Ann-Shing Lee
- Department of Clinical Oncology, Tuen Mun Hospital, Hong Kong, SAR, China
| | - Ada Law
- Department of Oncology, Pamela Youde Nethersole Eastern Hospital, Hong Kong, SAR, China
| | - Jian-Ying Zhang
- Department of Radiation Oncology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yong Hu
- Department of Radiation Oncology, Zhongshan Hospital, Fudan University, Shanghai, China
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Lock M, Malayeri AA, Mian OY, Mayr NA, Herman JM, Lo SS. Computed tomography imaging assessment of postexternal beam radiation changes of the liver. Future Oncol 2016; 12:2729-2739. [PMID: 27576360 DOI: 10.2217/fon-2016-0165] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Radiation is being used for patients with primary and secondary liver cancers, as a rapidly evolving treatment. However, postradiation imaging changes of the liver are not well understood and therefore challenging to interpret. Distinguishing normal radiation changes from residual or recurrent disease is difficult. Size and contrast enhancement have been used to guide interpretation and clinical recommendations, but normal radiation changes can make interpretation difficult and are not accounted for in available guidelines. Knowledge of dose- and time-dependent changes in addition to imaging findings, such as morphological and enhancement patterns, provides useful differentiating parameters. This paper reviews recent studies using computed tomography that can guide interpretation and help differentiate tumor from benign changes after external beam radiation.
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Affiliation(s)
- Michael Lock
- Department of Radiation Oncology, London Regional Cancer Program, University of Western Ontario, London, ON, Canada
| | - Ashkan A Malayeri
- Department of Radiology, National Institutes of Health, Bethesda, MD, USA
| | - Omar Y Mian
- Department of Radiation Oncology, Johns Hopkins University, Baltimore, MD, USA
| | - Nina A Mayr
- Department of Radiation Oncology, University of Washington School of Medicine, Seattle, WA, USA
| | - Joseph M Herman
- Department of Radiation Oncology, Johns Hopkins University, Baltimore, MD, USA
| | - Simon S Lo
- Department of Radiation Oncology, University of Washington School of Medicine, Seattle, WA, USA
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19
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MRI morphologic alterations after liver SBRT : Direct dose correlation with intermodal matching. Strahlenther Onkol 2016; 192:641-8. [PMID: 27393400 DOI: 10.1007/s00066-016-1013-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Accepted: 06/15/2016] [Indexed: 12/12/2022]
Abstract
AIM CT morphologic and histopathologic alterations have been reported after SBRT. We analyzed the correlation of MRI morphologic alterations with radiation doses to assess the potential for MRI-based dose-effect correlation in healthy liver tissue. PATIENTS AND METHODS MRI data of 24 patients with liver metastases 7±3 weeks after image-guided SBRT in deep-inspiration breath-hold were retrospectively analyzed. MRI images were intermodally matched to the planning CT and corresponding dose distribution. Absolute doses were converted to EQD2,α/β =x with α/β values of 2, 3 for healthy liver tissue, 8 Gy for modelled predamaged liver tissue and 10 Gy for tumor tissue. RESULTS A central nonenhancing area was observed within the isodose lines of nominally 48.2 ± 15.2 Gy, EQD2Gy/α/β =10 92.5 ± 27.7 Gy. Contrast-enhancement around the central nonenhancing area was observed within the isodose lines of nominally 46.9 ± 15.3 Gy, EQD2Gy/α/β =10 90.5 ± 28.3 Gy. Outside the high-dose volume, in the beam path, characteristic sharply defined, nonblurred MRI morphologic alterations were observed that corresponded with the following isodose lines: T1-intensity changes occurred at isodose lines of nominally 21.9 ± 6.7 Gy (EQD2,α/β =2 42.5 ± 8.7 Gy, EQD2,α/β =3 38.5 ± 7.6 Gy, EQD2,α/β =8 30.2 ±6.3 Gy). T2-hyper/hypointensity was observed within isodose lines of nominally 22.4 ± 6.6 Gy (EQD2,α/β=2 42.7 ± 8.1 Gy, EQD2,α/β=3 38.7 ± 7 Gy; EQD2,α/β=8 30.5 ± 5.9 Gy). CONCLUSIONS Using deformable matching, direct spatial/dosimetric correlation of SBRT-induced changes in liver tissue was possible. In the PTV high-dose region, a central nonenhancing area and peripheral contrast medium accumulation was observed. Beam path doses of 38-42 Gy (EQD2,α/β =2-3) induce characteristic MRI morphologic alterations.
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Ohri N, Dawson LA, Krishnan S, Seong J, Cheng JC, Sarin SK, Kinkhabwala M, Ahmed MM, Vikram B, Coleman CN, Guha C. Radiotherapy for Hepatocellular Carcinoma: New Indications and Directions for Future Study. J Natl Cancer Inst 2016; 108:djw133. [PMID: 27377923 DOI: 10.1093/jnci/djw133] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Accepted: 04/18/2016] [Indexed: 12/12/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is a leading cause of cancer death worldwide; its incidence is increasing in the United States. Depending on disease extent and underlying liver status, patients may be treated with local, locoregional, and/or systemic therapy. Recent data indicates that radiotherapy (RT) can play a meaningful role in the management of HCC. Here, we review published experiences using RT for HCC, including the use of radiosensitizers and stereotactic RT. We discuss methods for performing preclinical studies of RT for HCC and biomarkers of response. As a part of the HCC Working Group, an informal committee of the National Cancer Institute's Radiation Research Program, we suggest how RT should be implemented in the management of HCC and identify future directions for the study of RT in HCC.
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Affiliation(s)
- Nitin Ohri
- Department of Radiation Oncology (NO, CG) and Montefiore-Einstein Center for Transplantation (MK), Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY; Department of Radiation Oncology, Princess Margaret Cancer Centre/University of Toronto, Toronto, Ontario, Canada (LAD); Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX (SK); Department of Radiation Oncology, Yonsei University Hospital, Seoul, North Korea (JS); Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan (JCC); Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi, India (SKS); Molecular Radiation Therapeutics Branch (MMA) and Clinical Radiation Oncology Branch (BV), Radiation Research Program (CNC), National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Laura A Dawson
- Department of Radiation Oncology (NO, CG) and Montefiore-Einstein Center for Transplantation (MK), Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY; Department of Radiation Oncology, Princess Margaret Cancer Centre/University of Toronto, Toronto, Ontario, Canada (LAD); Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX (SK); Department of Radiation Oncology, Yonsei University Hospital, Seoul, North Korea (JS); Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan (JCC); Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi, India (SKS); Molecular Radiation Therapeutics Branch (MMA) and Clinical Radiation Oncology Branch (BV), Radiation Research Program (CNC), National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Sunil Krishnan
- Department of Radiation Oncology (NO, CG) and Montefiore-Einstein Center for Transplantation (MK), Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY; Department of Radiation Oncology, Princess Margaret Cancer Centre/University of Toronto, Toronto, Ontario, Canada (LAD); Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX (SK); Department of Radiation Oncology, Yonsei University Hospital, Seoul, North Korea (JS); Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan (JCC); Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi, India (SKS); Molecular Radiation Therapeutics Branch (MMA) and Clinical Radiation Oncology Branch (BV), Radiation Research Program (CNC), National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Jinsil Seong
- Department of Radiation Oncology (NO, CG) and Montefiore-Einstein Center for Transplantation (MK), Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY; Department of Radiation Oncology, Princess Margaret Cancer Centre/University of Toronto, Toronto, Ontario, Canada (LAD); Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX (SK); Department of Radiation Oncology, Yonsei University Hospital, Seoul, North Korea (JS); Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan (JCC); Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi, India (SKS); Molecular Radiation Therapeutics Branch (MMA) and Clinical Radiation Oncology Branch (BV), Radiation Research Program (CNC), National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Jason C Cheng
- Department of Radiation Oncology (NO, CG) and Montefiore-Einstein Center for Transplantation (MK), Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY; Department of Radiation Oncology, Princess Margaret Cancer Centre/University of Toronto, Toronto, Ontario, Canada (LAD); Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX (SK); Department of Radiation Oncology, Yonsei University Hospital, Seoul, North Korea (JS); Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan (JCC); Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi, India (SKS); Molecular Radiation Therapeutics Branch (MMA) and Clinical Radiation Oncology Branch (BV), Radiation Research Program (CNC), National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Shiv K Sarin
- Department of Radiation Oncology (NO, CG) and Montefiore-Einstein Center for Transplantation (MK), Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY; Department of Radiation Oncology, Princess Margaret Cancer Centre/University of Toronto, Toronto, Ontario, Canada (LAD); Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX (SK); Department of Radiation Oncology, Yonsei University Hospital, Seoul, North Korea (JS); Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan (JCC); Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi, India (SKS); Molecular Radiation Therapeutics Branch (MMA) and Clinical Radiation Oncology Branch (BV), Radiation Research Program (CNC), National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Milan Kinkhabwala
- Department of Radiation Oncology (NO, CG) and Montefiore-Einstein Center for Transplantation (MK), Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY; Department of Radiation Oncology, Princess Margaret Cancer Centre/University of Toronto, Toronto, Ontario, Canada (LAD); Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX (SK); Department of Radiation Oncology, Yonsei University Hospital, Seoul, North Korea (JS); Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan (JCC); Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi, India (SKS); Molecular Radiation Therapeutics Branch (MMA) and Clinical Radiation Oncology Branch (BV), Radiation Research Program (CNC), National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Mansoor M Ahmed
- Department of Radiation Oncology (NO, CG) and Montefiore-Einstein Center for Transplantation (MK), Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY; Department of Radiation Oncology, Princess Margaret Cancer Centre/University of Toronto, Toronto, Ontario, Canada (LAD); Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX (SK); Department of Radiation Oncology, Yonsei University Hospital, Seoul, North Korea (JS); Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan (JCC); Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi, India (SKS); Molecular Radiation Therapeutics Branch (MMA) and Clinical Radiation Oncology Branch (BV), Radiation Research Program (CNC), National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Bhadrasain Vikram
- Department of Radiation Oncology (NO, CG) and Montefiore-Einstein Center for Transplantation (MK), Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY; Department of Radiation Oncology, Princess Margaret Cancer Centre/University of Toronto, Toronto, Ontario, Canada (LAD); Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX (SK); Department of Radiation Oncology, Yonsei University Hospital, Seoul, North Korea (JS); Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan (JCC); Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi, India (SKS); Molecular Radiation Therapeutics Branch (MMA) and Clinical Radiation Oncology Branch (BV), Radiation Research Program (CNC), National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - C Norman Coleman
- Department of Radiation Oncology (NO, CG) and Montefiore-Einstein Center for Transplantation (MK), Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY; Department of Radiation Oncology, Princess Margaret Cancer Centre/University of Toronto, Toronto, Ontario, Canada (LAD); Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX (SK); Department of Radiation Oncology, Yonsei University Hospital, Seoul, North Korea (JS); Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan (JCC); Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi, India (SKS); Molecular Radiation Therapeutics Branch (MMA) and Clinical Radiation Oncology Branch (BV), Radiation Research Program (CNC), National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Chandan Guha
- Department of Radiation Oncology (NO, CG) and Montefiore-Einstein Center for Transplantation (MK), Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, NY; Department of Radiation Oncology, Princess Margaret Cancer Centre/University of Toronto, Toronto, Ontario, Canada (LAD); Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX (SK); Department of Radiation Oncology, Yonsei University Hospital, Seoul, North Korea (JS); Department of Oncology, National Taiwan University Hospital, Taipei, Taiwan (JCC); Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi, India (SKS); Molecular Radiation Therapeutics Branch (MMA) and Clinical Radiation Oncology Branch (BV), Radiation Research Program (CNC), National Cancer Institute, National Institutes of Health, Bethesda, MD.
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Jung SH, Yu JI, Park HC, Lim DH, Han Y. A feasibility study evaluating the relationship between dose and focal liver reaction in stereotactic ablative radiotherapy for liver cancer based on intensity change of Gd-EOB-DTPA-enhanced magnetic resonance images. Radiat Oncol J 2016; 34:64-75. [PMID: 27104169 PMCID: PMC4831971 DOI: 10.3857/roj.2016.34.1.64] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 12/03/2015] [Accepted: 01/08/2016] [Indexed: 12/11/2022] Open
Abstract
PURPOSE In order to evaluate the relationship between the dose to the liver parenchyma and focal liver reaction (FLR) after stereotactic ablative body radiotherapy (SABR), we suggest a novel method using a three-dimensional dose distribution and change in signal intensity of gadoxetate disodium-gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) hepatobiliary phase images. MATERIALS AND METHODS In our method, change of the signal intensity between the pretreatment and follow-up hepatobiliary phase images of Gd-EOB-DTPA-enhanced MRI was calculated and then threshold dose (TD) for developing FLR was obtained from correlation of dose with the change of the signal intensity. For validation of the method, TDs for six patients, who had been treated for liver cancer with SABR with 45-60 Gy in 3 fractions, were calculated using the method, and we evaluated concordance between volume enclosed by isodose of TD by the method and volume identified as FLR by a physician. RESULTS The dose to normal liver was correlated with change in signal intensity between pretreatment and follow-up MRI with a median R(2) of 0.935 (range, 0.748 to 0.985). The median TD by the method was 23.5 Gy (range, 18.3 to 39.4 Gy). The median value of concordance was 84.5% (range, 44.7% to 95.9%). CONCLUSION Our method is capable of providing a quantitative evaluation of the relationship between dose and intensity changes on follow-up MRI, as well as determining individual TD for developing FLR. We expect our method to provide better information about the individual relationship between dose and FLR in radiotherapy for liver cancer.
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Affiliation(s)
- Sang Hoon Jung
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jeong Il Yu
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hee Chul Park
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.; Department of Medical Device Management and Research, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Korea
| | - Do Hoon Lim
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Youngyih Han
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Evaluation of response after SBRT for liver tumors. Rep Pract Oncol Radiother 2015; 22:170-175. [PMID: 28490989 DOI: 10.1016/j.rpor.2015.12.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 12/01/2015] [Indexed: 12/13/2022] Open
Abstract
Stereotactic body radiotherapy (SBRT) has developed over the last few years for the treatment of primary and metastatic hepatic tumors. The tumoral and adjacent peritumoral modifications caused by this radiosurgery limit the evaluation of response by anatomic imaging and dimensional criteria alone, such as with RECIST. This suggests that it is of interest to also take into account the residual enhancement and hyper metabolism of these hepatic targets. We have reviewed the English language literature regarding the response of hepatic lesions treated by SBRT, and found that only seven articles were specifically concerned with this problem. The response of the hepatocellular carcinoma after SBRT has been studied specifically with multiphase enhanced CT-scan. Criteria set by the European Association of Study of the Liver better estimate response at each time point of follow up than RECIST does. Non-enhancement, reflecting tumor necrosis, is additionally an early indicator of response with extended response in time and a best non-enhancement percentage is observed at 12 months. The response after treatment by SBRT of cholangiocarcinoma has not yet generated a specific report. Use of RECIST criteria is also inadequate in the evaluation of response after SBRT for hepatic metastases. Response of liver metastases to SBRT is better assessed with a combination of size and enhancement pattern. The occurrence of a lobulated enhancement during follow up is efficient to predict local progression in a specific, reproducible, and sensitive way. Patients with FDG-avid hepatic metastases are also better evaluated with PET-CT and functional criteria than routine imaging and metric evaluation alone.
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Key Words
- CT, computerized tomography
- EASL, European Association of Study of the Liver
- FDG, fluorodeoxyglucose
- HCC, Hepatocellular carcinoma
- Liver
- MRI, magnetic resonance imaging
- PERCIST, PET Response Criteria in Solid Tumors
- PET, positron-emission tomography
- Positron-emission tomography
- RECIST, criteria of response in solid tumors
- SBRT, stereotactic body radiotherapy
- SUV, standard uptake value
- Stereotactic body radiotherapy
- Tomography
- Treatment effectiveness
- X-ray computed
- mRECIST, modified criteria of response in solid tumors
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Shiozawa K, Watanabe M, Ikehara T, Kobayashi K, Ochi Y, Suzuki Y, Fuchinoue K, Yoneda M, Kenmochi T, Okubo Y, Mori T, Makino H, Tsukamoto N, Igarashi Y, Sumino Y. Evaluation of contrast-enhanced ultrasonography for hepatocellular carcinoma prior to and following stereotactic body radiation therapy using the CyberKnife® system: A preliminary report. Oncol Lett 2015; 11:208-212. [PMID: 26870190 PMCID: PMC4727166 DOI: 10.3892/ol.2015.3874] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 09/21/2015] [Indexed: 01/01/2023] Open
Abstract
The CyberKnife® is expected to be a novel local treatment for hepatocellular carcinoma (HCC), however, a long-term follow-up using dynamic computed tomography and magnetic resonance imaging is required to determine the effect of treatment in a number of the affected patients. Therefore, there is a requirement to evaluate procedures for early determination of the effect of CyberKnife treatment. The present study aimed to evaluate the changes in the hemodynamics of the tumors and the hepatic parenchyma surrounding the tumor prior to and following CyberKnife treatment for HCC. A total of 4 HCC patients were enrolled in this study. These patients underwent CyberKnife treatment and were evaluated by image analysis prior to and following treatment using contrast-enhanced ultrasonography (CEUS) with Sonazoid. CEUS was performed prior to treatment, at 2 and 4 weeks post-treatment, and every 4 weeks thereafter for as long as possible. The dynamics of the enhancement of the tumor and the hepatic parenchyma surrounding the tumor in the vascular phase, and the presence or absence of a hypoechoic area in the hepatic parenchyma surrounding the tumor in the post-vascular phase were assessed. Results showed that: i) In the patient with earlier changes, hemodynamic changes were evident in the tumor at 4 weeks and in the hepatic parenchyma surrounding the tumor at 2 weeks post-treatment, respectively; ii) the tumor showed hypoenhancement in all patients; and iii) with regard to findings in the hepatic parenchyma surrounding the tumor, strong hyperenhancement appeared in the vascular phase initially, followed by a hypoechoic area in the post-vascular phase. Evaluation of the hemodynamics of tumors and hepatic parenchyma surrounding the tumor using CEUS with Sonazoid may be therapeutically applicable, as it is less invasive than dynamic computed tomography (CT) and provides an early evaluation of the effectiveness of CyberKnife treatment.
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Affiliation(s)
- Kazue Shiozawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Saiseikai Yokohamashi Tobu Hospital, Yokohama, Kanagawa 230-0012, Japan; Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Medical Center, Omori Hospital, Tokyo 143-8541, Japan
| | - Manabu Watanabe
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Medical Center, Omori Hospital, Tokyo 143-8541, Japan
| | - Takashi Ikehara
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Medical Center, Omori Hospital, Tokyo 143-8541, Japan
| | - Kojiro Kobayashi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Saiseikai Yokohamashi Tobu Hospital, Yokohama, Kanagawa 230-0012, Japan
| | - Yuta Ochi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Saiseikai Yokohamashi Tobu Hospital, Yokohama, Kanagawa 230-0012, Japan
| | - Yuta Suzuki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Saiseikai Yokohamashi Tobu Hospital, Yokohama, Kanagawa 230-0012, Japan
| | - Kazuhiro Fuchinoue
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Saiseikai Yokohamashi Tobu Hospital, Yokohama, Kanagawa 230-0012, Japan
| | - Masataka Yoneda
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Saiseikai Yokohamashi Tobu Hospital, Yokohama, Kanagawa 230-0012, Japan
| | - Takeshi Kenmochi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Saiseikai Yokohamashi Tobu Hospital, Yokohama, Kanagawa 230-0012, Japan
| | - Yusuke Okubo
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Saiseikai Yokohamashi Tobu Hospital, Yokohama, Kanagawa 230-0012, Japan
| | - Takayuki Mori
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Saiseikai Yokohamashi Tobu Hospital, Yokohama, Kanagawa 230-0012, Japan
| | - Hiroyuki Makino
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Saiseikai Yokohamashi Tobu Hospital, Yokohama, Kanagawa 230-0012, Japan
| | - Nobuhiro Tsukamoto
- Department of Radiology, Saiseikai Yokohamashi Tobu Hospital, Yokohama, Kanagawa 230-0012, Japan
| | - Yoshinori Igarashi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Medical Center, Omori Hospital, Tokyo 143-8541, Japan
| | - Yasukiyo Sumino
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Toho University Medical Center, Omori Hospital, Tokyo 143-8541, Japan
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Clinical utility of gadoxetate disodium-enhanced hepatic MRI for stereotactic body radiotherapy of hepatocellular carcinoma. Jpn J Radiol 2015; 33:627-35. [PMID: 26227061 DOI: 10.1007/s11604-015-0465-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 07/17/2015] [Indexed: 02/07/2023]
Abstract
PURPOSE To investigate the utility of gadoxetate disodium-enhanced hepatic MRI (EOB-MRI) for stereotactic body radiotherapy (SBRT) to treat hepatocellular carcinoma (HCC). MATERIALS AND METHODS We divided 30 HCC patients who underwent SBRT into group A (no change in their Child-Pugh score 6 months post-SBRT) and group B (increased score 6 months post-SBRT). EOB-MRI was performed before and 6 months after SBRT. We calculated the liver-spleen contrast (LSC) ratio for each radiation dose area on hepatobiliary phase scans (LSCbefore using images obtained before SBRT and LSCafter using images acquired after SBRT) and the weighted LSC (W-LSC) as: [(mean LSCbefore (0-30 Gy) × liver volume (0-30 Gy) + mean LSCbefore (30 Gy-) × liver volume (30 Gy-))/total liver volume]. Then we compared the W-LSC, percentage of the liver volume exposed to >20 Gy (V20), and mean liver dose in the two groups. RESULTS The LSCafter at 48, 40, and 30 Gy to the liver was statistically lower than the unirradiated area of the liver (p < 0.01). Univariate analysis showed that only W-LSC was significantly associated with group B (p = 0.02). CONCLUSION W-LSC was a useful parameter for predicting changes in hepatic function after SBRT.
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Kimura T, Takahashi S, Takahashi I, Nishibuchi I, Doi Y, Kenjo M, Murakami Y, Honda Y, Aikata H, Chayama K, Nagata Y. The Time Course of Dynamic Computed Tomographic Appearance of Radiation Injury to the Cirrhotic Liver Following Stereotactic Body Radiation Therapy for Hepatocellular Carcinoma. PLoS One 2015; 10:e0125231. [PMID: 26067065 PMCID: PMC4466204 DOI: 10.1371/journal.pone.0125231] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Accepted: 03/22/2015] [Indexed: 01/23/2023] Open
Abstract
This study aimed to evaluate the dynamic computed tomographic (CT) appearance of focal radiation injury to cirrhotic liver tissue around the tumor following stereotactic body radiation therapy (SBRT) for hepatocellular carcinoma (HCC). Seventy-seven patients with 92 HCCs were observed for >6 months. Sixty-four and 13 patients belonged to Child-Pugh class A and B, respectively. The median SBRT dose was 48 Gy/4fr. Dynamic CT scans were performed in non-enhanced, arterial, portal, and venous phases. The median follow-up period was 18 months. Dynamic CT appearances were classified into 3 types: type 1, hyperdensity in all enhanced phases; type 2, hypodensity in arterial and portal phases; type 3, isodensity in all enhanced phases. Half of the type 2 or 3 appearances significantly changed to type 1, particularly in patients belonging to Child-Pugh class A. After 3-6 months, Child-Pugh class B was a significant factor in type 3 patients. Thus, dynamic CT appearances were classified into 3 patterns and significantly changed over time into the enhancement group (type 1) in most patients belonging to Child-Pugh class A. Child-Pugh class B was a significant factor in the non-enhancement group (type 3).
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Affiliation(s)
- Tomoki Kimura
- Department of Radiation Oncology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
- * E-mail:
| | - Shigeo Takahashi
- Department of Radiation Oncology, Kagawa University Hospital, Takamatsu, Japan
| | - Ippei Takahashi
- Department of Radiation Oncology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Ikuno Nishibuchi
- Department of Radiation Oncology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Yoshiko Doi
- Department of Radiation Oncology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Masahiro Kenjo
- Department of Radiation Oncology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Yuji Murakami
- Department of Radiation Oncology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Yohji Honda
- Department of Medicine and Molecular Science, Division of Frontier Medical Science, Programs for Biomedical Research, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Hiroshi Aikata
- Department of Medicine and Molecular Science, Division of Frontier Medical Science, Programs for Biomedical Research, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Kazuaki Chayama
- Department of Medicine and Molecular Science, Division of Frontier Medical Science, Programs for Biomedical Research, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Yasushi Nagata
- Department of Radiation Oncology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
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Kong M, Hong SE. Optimal follow-up duration for evaluating objective response to radiotherapy in patients with hepatocellular carcinoma: a retrospective study. CHINESE JOURNAL OF CANCER 2014; 34:79-85. [PMID: 25418189 PMCID: PMC4360076 DOI: 10.5732/cjc.014.10136] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The time to complete or partial (objective) response to radiotherapy in patients with hepatocellular carcinoma (HCC) is variable; thus, the reported frequency of these responses depends on the length of follow-up. However, the optimum follow-up duration is unknown. We sought to determine the optimal follow-up duration by analyzing the medical records of 25 patients with 39 HCC lesions who received definitive helical tomotherapy at a daily dose of 2 to 4 Gy at 5 fractions per week, for a total dose of 40 to 60 Gy, between January 2008 and January 2013. We determined the time to objective treatment response and local recurrence after radiotherapy and assessed several predictors of delayed treatment response. The median follow-up duration was 15.2 months (range, 7.8 to 52.1 months). Among all 39 lesions, objective responses were observed for 36 (92.3%). The median time to objective response was 3.9 months (range, 1.5 to 9.8 months). The objective response rates increased over time from 15.4% at 3 months to 71.8% at 6 months and 87.2% at 9 months. Age 60 years old or older and post-radiotherapy α-fetoprotein concentrations higher than pre-radiotherapy concentrations predicted delayed treatment response. The objective response rate continued to increase over 9 months. Therefore, to fully evaluate the treatment response of HCC, we recommend continuous observation for at least 9 months after radiotherapy.
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Affiliation(s)
- Moonkyoo Kong
- Department of Radiation Oncology, Kyung Hee University Medical Center, Kyung Hee University School of Medicine, Seoul 130-702, Republic of
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Yoon HI, Lee IJ, Han KH, Seong J. Improved oncologic outcomes with image-guided intensity-modulated radiation therapy using helical tomotherapy in locally advanced hepatocellular carcinoma. J Cancer Res Clin Oncol 2014; 140:1595-605. [PMID: 24809934 DOI: 10.1007/s00432-014-1697-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 04/24/2014] [Indexed: 01/12/2023]
Abstract
AIM To investigate whether image-guided intensity-modulated radiation therapy (IG-IMRT) improves survival in hepatocellular carcinoma (HCC) relative to 3-dimensional conformal radiotherapy (3D-CRT). METHODS Between 2006 and 2011, 187 HCC patients treated with definitive RT were reviewed. Median age was 53(range 51-83). All patients were stage III or IV-A. Concurrent chemoradiation was received by 178 patients (95.2 %). Overall actuarial survival (OS), progression-free survival (PFS), and infield-failure-free survival (IFFS) analyses were performed by Kaplan-Meier method. A Cox proportional hazards model was used for univariate and multivariate analysis. Pearson's chi-square test or Fisher's exact test was used to compare patient characteristics and treatment-related toxicity between the groups. RESULTS Sixty-five patients were treated with IG-IMRT and 122 patients with 3D-CRT. No significant differences were seen between the groups for all patient characteristics. IG-IMRT delivered higher doses than 3D-CRT (median biological effective dose 62.5 vs 53.1 Gy, P < 0.001). IG-IMRT showed significantly higher 3-year OS (33.4 vs 13.5 %, P < 0.001), PFS (11.1 vs 6.0 %, P = 0.004), and IFFS (46.8 vs 28.2 %, P = 0.007) than 3D-CRT. On univariate and multivariate analysis, RT modality was significant prognostic factor for OS (HR 2.18; 95 % CI 1.45-3.25; P < 0.001), PFS (HR 1.64; 95 % CI 1.17-2.29; P = 0.004). There was no significant difference between the two modalities for radiation-induced liver disease (P = 0.716). CONCLUSION Our findings suggest that IG-IMRT could be an effective treatment that provides survival benefit without increasing severe toxicity in locally advanced HCC.
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Affiliation(s)
- Hong In Yoon
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University Health System, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, Republic of Korea
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[Evaluation of the therapeutic response after stereotactic body radiation therapy for liver tumors]. Cancer Radiother 2014; 18:320-4. [PMID: 24811896 DOI: 10.1016/j.canrad.2014.02.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 01/23/2014] [Accepted: 02/13/2014] [Indexed: 01/20/2023]
Abstract
Stereotactic body radiation therapy takes more and more an important place in the therapeutic arsenal of primitive and secondary liver tumours. The administration of ablative radiation doses can result in specific changes to both the tumour and the healthy hepatic parenchyma, relative to conventional radiation therapy, making the assessment of local changes after stereotactic body radiation therapy, in terms of local control and reaction of healthy tissue, often difficult. It is mandatory to standardize and simplify our evaluation criteria to benefit from a better understanding of the effectiveness of this new treatment modality and allow better reproducibility of available imaging exams. This article presents a literature review of the various radiological changes observed after stereotactic body radiation therapy for liver tumours according to the multiple assessment methods used to determine local control. From the data available, we recommend using modified RECIST criteria proposed by the American Association for the Study of Liver Diseases (AASLD), as objective and relevant criteria of local control after stereotactic body radiation therapy for liver tumours.
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Sanuki N, Takeda A, Kunieda E. Role of stereotactic body radiation therapy for hepatocellular carcinoma. World J Gastroenterol 2014; 20:3100-3111. [PMID: 24696597 PMCID: PMC3964382 DOI: 10.3748/wjg.v20.i12.3100] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2013] [Revised: 12/20/2013] [Accepted: 01/08/2014] [Indexed: 02/07/2023] Open
Abstract
The integration of new technologies has raised an interest in liver tumor radiotherapy, with literature evolving to support its efficacy. These advances, particularly stereotactic body radiation therapy (SBRT), have been critical in improving local control or potential cure in liver lesions not amenable to first-line surgical resection or radiofrequency ablation. Active investigation of SBRT, particularly for hepatocellular carcinoma (HCC), has recently started, yielding promising local control rates. In addition, data suggest a possibility that SBRT can be an alternative option for HCC unfit for other local therapies. However, information on optimal treatment indications, doses, and methods remains limited. In HCC, significant differences in patient characteristics and treatment availability exist by country. In addition, the prognosis of HCC is greatly influenced by underlying liver dysfunction and treatment itself in addition to tumor stage. Since they are closely linked to treatment approach, it is important to understand these differences in interpreting outcomes from various reports. Further studies are required to validate and maximize the efficacy of SBRT by a large, multi-institutional setting.
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Stereotactic body radiotherapy-induced arterial hypervascularity of non-tumorous hepatic parenchyma in patients with hepatocellular carcinoma: potential pitfalls in tumor response evaluation on multiphase computed tomography. PLoS One 2014; 9:e90327. [PMID: 24587326 PMCID: PMC3938667 DOI: 10.1371/journal.pone.0090327] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Accepted: 01/31/2014] [Indexed: 02/07/2023] Open
Abstract
Purpose To evaluate temporal changes in contrast enhancement patterns of non-tumorous hepatic parenchyma with a focus on arterial hypervascularity on multiphase computed tomography (CT) in patients with hepatocellular carcinoma (HCC) treated with stereotactic body radiotherapy (SBRT). Methods We retrospectively identified 61 patients who had undergone multiphase contrast-enhanced CT at one, three, and six months after SBRT. Irradiated versus non-irradiated liver parenchyma was delineated by cross-correlation with the dose-volume histogram of SBRT plan. Serial changes in the contrast enhancement patterns of the irradiated versus non-irradiated liver parenchyma were evaluated by two abdominal radiologists in consensus. We compared the frequency of the contrast enhancement patterns according to the follow-up period using the Fisher-Freeman-Halton exact test. Results The irradiated non-tumorous hepatic parenchyma showed that the prevalence of arterial hypervascularity increased during the follow-up period (P<.01): 11.5% (7/61) in one, 45.9% (28/61) in three, and 54.1% (33/61) in six months. Contrast wash-out on the delayed phase was uncommon: 1.6% (1/61) in one, 3.3% (2/61) in three, and 0% in six months. Conclusion The incidence of arterial hypervascularity of the irradiated hepatic parenchyma gradually increased until six months after SBRT, which could interfere with the accurate evaluation of treatment response. The lack of wash-out on the delayed phase in the hypervascular area would distinguish SBRT-related change from residual/recurred HCC.
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Sanuki N, Takeda A, Oku Y, Eriguchi T, Nishimura S, Aoki Y, Mizuno T, Iwabuchi S, Kunieda E. Threshold Doses for Focal Liver Reaction After Stereotactic Ablative Body Radiation Therapy for Small Hepatocellular Carcinoma Depend on Liver Function: Evaluation on Magnetic Resonance Imaging With Gd-EOB-DTPA. Int J Radiat Oncol Biol Phys 2014; 88:306-11. [DOI: 10.1016/j.ijrobp.2013.10.045] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 09/28/2013] [Accepted: 10/31/2013] [Indexed: 12/25/2022]
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Tumor response on CT following hypofractionated stereotactic ablative body radiotherapy for small hypervascular hepatocellular carcinoma with cirrhosis. AJR Am J Roentgenol 2014; 201:W812-20. [PMID: 24261388 DOI: 10.2214/ajr.12.10169] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE The purpose of this study is to evaluate the CT appearances of tumor responses following hypofractionated stereotactic ablative body radiotherapy for small hypervascular hepatocellular carcinomas (HCCs) and to assess the relationship between tumor responses and local control. MATERIALS AND METHODS Among 277 HCC tumors treated with stereotactic ablative body radiotherapy (35 or 40 Gy per five fractions), we selected enhanced lesions on arterial phase CT performed before stereotactic ablative body radiotherapy. Radiographic findings after stereotactic ablative body radiotherapy were evaluated during a 2-year follow-up period with the modified Response Evaluation Criteria in Solid Tumors. Local control and survival rates were calculated with the Kaplan-Meier method. RESULTS Forty-two tumors with a median size of 2.1 cm (range, 1.0-3.8 cm) were selected with a median follow-up of 23.3 months (range, 9-56 months). Local recurrence was observed in two tumors after achieving a complete response (CR). The 2-year local control rate was 97%, and the overall survival rate was 81%. CR increased from 10 (24%) to 28 (67%) to 30 (71%) tumors at 3, 6, and 12 months after stereotactic ablative body radiotherapy. Overall CR at maximum follow-up was 39 tumors (93%), yet three enhanced tumors persisted for more than 2 years. The median time to achieve CR was 5.9 months (range, 1.2-34.2 months). CONCLUSION The CR rate in hypervascular HCCs after hypofractionated stereotactic ablative body radiotherapy increased during the 2-year follow-up period. Cautious and continuous observation until tumor regrowth is considered relevant to evaluate a true effect of this treatment. Further studies for the optimal evaluation of treatment outcome after stereotactic ablative body radiotherapy are warranted.
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Kimura T, Takahashi S, Kenjo M, Nishibuchi I, Takahashi I, Takeuchi Y, Doi Y, Kaneyasu Y, Murakami Y, Honda Y, Aikata H, Chayama K, Nagata Y. Dynamic computed tomography appearance of tumor response after stereotactic body radiation therapy for hepatocellular carcinoma: How should we evaluate treatment effects? Hepatol Res 2013; 43:717-27. [PMID: 23356835 DOI: 10.1111/hepr.12007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2012] [Revised: 09/30/2012] [Accepted: 10/15/2012] [Indexed: 01/22/2023]
Abstract
AIM To evaluate the dynamic computed tomography (CT) appearance of tumor response after stereotactic body radiation therapy (SBRT) for hepatocellular carcinoma (HCC) and reconsider response evaluation criteria for SBRT that determine treatment outcomes. METHODS Fifty-nine patients with 67 tumors were included in the study. Of these, 56 patients with 63 tumors underwent transarterial chemoembolization using lipiodol prior to SBRT that was performed using a 3-D conformal method (median, 48 Gy/four fractions). Dynamic CT scans were performed in four phases, and tumor response was evaluated by comparing tumor appearance on CT prior SBRT and at least 6 months after SBRT. The median follow-up time was 12 months. RESULTS The dynamic CT appearance of tumor response was classified into the following: type 1, continuous lipiodol accumulation without early arterial enhancement (26 lesions, 38.8%); type 2, residual early arterial enhancement within 3 months after SBRT (17 lesions, 25.3%); type 3, residual early arterial enhancement more than 3 months after SBRT (19 lesions, 28.4%); and type 4, shrinking low-density area without early arterial enhancement (five lesions, 7.5%). Only two tumors with residual early arterial enhancement did not demonstrate remission more than 6 months after SBRT. CONCLUSION The dynamic CT appearance after SBRT for HCC was classified into four types. Residual early arterial enhancement disappeared within 6 months in most type 3 cases; therefore, early assessment within 3 months may result in a misleading response evaluation.
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Affiliation(s)
- Tomoki Kimura
- Department of Radiation Oncology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
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Normal liver tissue density dose response in patients treated with stereotactic body radiation therapy for liver metastases. Int J Radiat Oncol Biol Phys 2012; 84:e441-6. [PMID: 22682809 DOI: 10.1016/j.ijrobp.2012.04.041] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 04/25/2012] [Accepted: 04/27/2012] [Indexed: 01/09/2023]
Abstract
PURPOSE To evaluate the temporal dose response of normal liver tissue for patients with liver metastases treated with stereotactic body radiation therapy (SBRT). METHODS AND MATERIALS Ninety-nine noncontrast follow-up computed tomography (CT) scans of 34 patients who received SBRT between 2004 and 2011 were retrospectively analyzed at a median of 8 months post-SBRT (range, 0.7-36 months). SBRT-induced normal liver tissue density changes in follow-up CT scans were evaluated at 2, 6, 10, 15, and 27 months. The dose distributions from planning CTs were mapped to follow-up CTs to relate the mean Hounsfield unit change (ΔHU) to dose received over the range 0-55 Gy in 3-5 fractions. An absolute density change of 7 HU was considered a significant radiographic change in normal liver tissue. RESULTS Increasing radiation dose was linearly correlated with lower post-SBRT liver tissue density (slope, -0.65 ΔHU/5 Gy). The threshold for significant change (-7 ΔHU) was observed in the range of 30-35 Gy. This effect did not vary significantly over the time intervals evaluated. CONCLUSIONS SBRT induces a dose-dependent and relatively time-independent hypodense radiation reaction within normal liver tissue that is characterized by a decrease of >7 HU in liver density for doses >30-35 Gy.
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Dose volume histogram analysis of focal liver reaction in follow-up multiphasic CT following stereotactic body radiotherapy for small hepatocellular carcinoma. Radiother Oncol 2012; 104:374-8. [PMID: 22248506 DOI: 10.1016/j.radonc.2011.12.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2011] [Revised: 12/11/2011] [Accepted: 12/12/2011] [Indexed: 12/16/2022]
Abstract
PURPOSE To investigate threshold dose (TD) of focal liver reaction (FLR) following stereotactic body radiotherapy (SBRT) for patients with hepatocellular carcinoma (HCC) and liver cirrhosis. MATERIALS AND METHODS In consecutive 50 patients receiving SBRT for small HCC, 38 patients receiving SBRT and follow up >6 months, FLR on follow-up CT had been previously studied. Patients with good concordance between FLR and highly irradiated area were eligible. Dose volume histogram (DVH) was used to identify TDs for FLR. Clinical factors were analyzed for correlation with TDs. RESULTS Of 24 eligible patients, 23 had Child-Pugh score A and 1 scored B. Presence of FLR peaked at a median of 6 (range; 3-12) months. The median and 95% confidential intervals of TDs of pre-contrast and portal-venous phase CT were 32.4 Gy (30.3-35.4) and 34.4 Gy (31.9-36.0), respectively. Each median coefficient representing the concordance was 74.9% (range; 55.8-98.0%) and 80.5% (range; 70.8-92.4%), respectively. No clinical factors significantly correlated with the TDs. CONCLUSION We proposed 30 Gy/5 fractions as TD of FLRs following SBRT for patients with HCC and liver cirrhosis. This TD will enable us to predict injured liver volume and to avoid complication beforehand from toxicity. Further pathological and clinical studies, in addition to more practical and precise data of DVH, are needed to clarify the significance of FLRs.
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