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Utsumi N, Takahashi T, Hatanaka S, Hariu M, Saito M, Kondo S, Soda R, Nishimura K, Yamano T, Watanabe W, Shimbo M, Honda N. VMAT Planning With Xe-CT Functional Images Enables Radiotherapy Planning With Consideration of Lung Function. CANCER DIAGNOSIS & PROGNOSIS 2021; 1:193-200. [PMID: 35399314 PMCID: PMC8962790 DOI: 10.21873/cdp.10026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 07/25/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND/AIM The most severe adverse event of radiotherapy in lung cancer is radiation pneumonitis (RP). Some indices commonly used to prevent RP are evaluated based on the anatomical lung volume. The irradiation dose may be more accurately assessed by using functional lung volume. We evaluated the usefulness of computed tomography (CT) incorporating functional ventilation images acquired by the inhalation of xenon (Xe) gas (Xe-CT functional images). PATIENTS AND METHODS Two plans were created for twelve patients: volumetric modulated arc therapy (VMAT) planning using conventional chest CT images (anatomical plans) and VMAT planning using Xe-CT functional images (functional plans), and the dosimetric parameters were compared. RESULTS Compared to the anatomical plans, the functional plans had significantly reduced V 20Gy in the high-functional lungs (p=0.005), but significant differences were not seen in the moderate-functional and low-functional lungs. CONCLUSION The incorporation of Xe-CT functional images into VMAT plans enables radiotherapy planning with consideration of lung function.
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Affiliation(s)
- Nobuko Utsumi
- Department of Radiation Oncology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
- Department of Radiation Therapy, JCHO Tokyo Shinjuku Medical Center, Tokyo, Japan
| | - Takeo Takahashi
- Department of Radiation Oncology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Shogo Hatanaka
- Department of Radiation Oncology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Masatsugu Hariu
- Department of Radiation Oncology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Mio Saito
- Department of Radiation Oncology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Shuichi Kondo
- Department of Radiation Oncology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Rikana Soda
- Department of Radiation Oncology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Keiichiro Nishimura
- Department of Radiation Oncology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Takafumi Yamano
- Department of Radiation Oncology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Wataru Watanabe
- Department of Radiology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Munefumi Shimbo
- Department of Radiation Oncology, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - Norinari Honda
- Department of Radiology, Saitama Sekishinkai Hospital, Saitama, Japan
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Oswald NK, Halle-Smith J, Mehdi R, Nightingale P, Naidu B, Turner AM. Predicting Postoperative Lung Function Following Lung Cancer Resection: A Systematic Review and Meta-analysis. EClinicalMedicine 2019; 15:7-13. [PMID: 31709409 PMCID: PMC6833443 DOI: 10.1016/j.eclinm.2019.08.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 07/19/2019] [Accepted: 08/21/2019] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Lung resection remains the gold standard treatment for early stage lung cancer; prediction of postoperative lung function is a key selection criterion for surgery with the aim of determining risk of postoperative dyspnoea. We aimed to identify the different prediction techniques used, and compare their accuracy. METHODS A systematic review and meta-analysis sought to synthesise studies conducted that assess prediction of postoperative lung function up to 18/02/2018 (n = 135). PROBAST was used to assess risk of bias in studies, 17 studies were judged to be at low risk of bias. FINDINGS Meta-analysis revealed CT volume and density measurement to be the most accurate (mean difference 71 ml) and precise (standard deviation 207 ml) of the reported techniques used for predicting FEV1; evidence for predicting gas transfer was lacking. INTERPRETATION The evidence suggests using CT volume and density is the preferred technique in the prediction of postoperative FEV1. Further studies are required to ensure that the methods and thresholds we propose are linked to patient reported outcomes. FUNDING Salary support for NKO, RM, PN, BN, and AMT was provided by University Hospitals Birmingham NHS Foundation Trust.
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Affiliation(s)
- Nicola K. Oswald
- Institute of Inflammation and Ageing, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom of Great Britain and Northern Ireland
| | - James Halle-Smith
- College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom of Great Britain and Northern Ireland
| | - Rana Mehdi
- Department of Thoracic Surgery, Heartlands Hospital, Bordesley Green East, Birmingham B9 5SS, United Kingdom of Great Britain and Northern Ireland
| | - Peter Nightingale
- Institute of Translational Medicine, University Hospitals Birmingham NHS Foundation Trust, Edgbaston, Birmingham B15 2TH, United Kingdom of Great Britain and Northern Ireland
| | - Babu Naidu
- Institute of Inflammation and Ageing, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom of Great Britain and Northern Ireland
- Corresponding author at: Institute of Inflammation and Ageing, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom of Great Britain and Northern Ireland.
| | - Alice M. Turner
- Institute of Applied Health Research, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom of Great Britain and Northern Ireland
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Pinkham DW, Negahdar M, Yamamoto T, Mittra E, Diehn M, Nair VS, Keall PJ, Maxim PG, Loo BW. A Feasibility Study of Single-inhalation, Single-energy Xenon-enhanced CT for High-resolution Imaging of Regional Lung Ventilation in Humans. Acad Radiol 2019; 26:38-49. [PMID: 29606339 DOI: 10.1016/j.acra.2018.03.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 03/01/2018] [Accepted: 03/07/2018] [Indexed: 11/30/2022]
Abstract
RATIONALE AND OBJECTIVES The objective of this study was to assess the feasibility of single-inhalation xenon-enhanced computed tomography (XeCT) to provide clinically practical, high-resolution pulmonary ventilation imaging to clinics with access to only a single-energy computed tomography scanner, and to reduce the subject's overall exposure to xenon by utilizing a higher (70%) concentration for a much shorter time than has been employed in prior studies. MATERIALS AND METHODS We conducted an institutional review board-approved prospective feasibility study of XeCT for 15 patients undergoing thoracic radiotherapy. For XeCT, we acquired two breath-hold single-energy computed tomography images of the entire lung with a single inhalation each of 100% oxygen and a mixture of 70% xenon and 30% oxygen, respectively. A video biofeedback system for coached patient breathing was used to achieve reproducible breath holds. We assessed the technical success of XeCT acquisition and side effects. We then used deformable image registration to align the breath-hold images with each other to accurately subtract them, producing a map of lung xenon distribution. Additionally, we acquired ventilation single-photon emission computed tomography-computed tomography (V-SPECT-CT) images for 11 of the 15 patients. For a comparative analysis, we partitioned each lung into 12 sectors, calculated the xenon concentration from the Hounsfield unit enhancement in each sector, and then correlated this with the corresponding V-SPECT-CT counts. RESULTS XeCT scans were tolerated well overall, with a mild (grade 1) dizziness as the only side effect in 5 of the 15 patients. Technical failures in five patients occurred because of inaccurate breathing synchronization with xenon gas delivery, leaving seven patients analyzable for XeCT and single-photon emission computed tomography correlation. Sector-wise correlations were strong (Spearman coefficient >0.75, Pearson coefficient >0.65, P value <.002) for two patients for whom ventilation deficits were visibly pronounced in both scans. Correlations were nonsignificant for the remaining five who had more homogeneous XeCT ventilation maps, as well as strong V-SPECT-CT imaging artifacts attributable to airway deposition of the aerosolized imaging agent. Qualitatively, XeCT demonstrated higher resolution and no central airway deposition artifacts compared to V-SPECT-CT. CONCLUSIONS In this pilot study, single-breath XeCT ventilation imaging was generally feasible for patients undergoing thoracic radiotherapy, using an imaging protocol that is clinically practical and potentially widely available. In the future, the xenon delivery failures can be addressed by straightforward technical improvements to the patient biofeedback coaching system.
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Affiliation(s)
- Daniel W Pinkham
- Department of Radiation Oncology, Stanford University, 875 Blake Wilbur Dr., Stanford, CA 94305
| | - Mohammadreza Negahdar
- Department of Radiation Oncology, Stanford University, 875 Blake Wilbur Dr., Stanford, CA 94305; Almaden Research Center, IBM Research, San Jose, California
| | - Tokihiro Yamamoto
- Department of Radiation Oncology, University of California, Davis, Sacramento, California
| | - Erik Mittra
- Department of Radiology, Stanford University, Stanford, California
| | - Maximilian Diehn
- Department of Radiation Oncology, Stanford University, 875 Blake Wilbur Dr., Stanford, CA 94305
| | - Viswam S Nair
- Division of Pulmonary & Critical Care Medicine, Stanford University, Stanford, California
| | - Paul J Keall
- Radiation Physics Laboratory, The University of Sydney, NSW, Australia
| | - Peter G Maxim
- Department of Radiation Oncology, Stanford University, 875 Blake Wilbur Dr., Stanford, CA 94305.
| | - Billy W Loo
- Department of Radiation Oncology, Stanford University, 875 Blake Wilbur Dr., Stanford, CA 94305.
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Aoki K, Izumi Y, Watanabe W, Shimizu Y, Osada H, Honda N, Itoh T, Nakayama M. Generation of ventilation/perfusion ratio map in surgical patients by dual-energy CT after xenon inhalation and intravenous contrast media. J Cardiothorac Surg 2018; 13:43. [PMID: 29776385 PMCID: PMC5960088 DOI: 10.1186/s13019-018-0737-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 05/10/2018] [Indexed: 11/15/2022] Open
Abstract
Background While many studies have evaluated the change in lung volume before and after lung resection and correlated this with pulmonary function test results, there is very little evidence on the changes in ventilation perfusion ratio (V/Q) before versus after lung resection. In the present pilot study, we evaluated if V/Q mapping can be constructed using dual energy CT images. Methods Thirty-one lung cancer patients planned for pulmonary resection were included in this study. To evaluate ventilation, Xenon-enhanced CT was performed. This was immediately followed by perfusion CT. The two images were registered manually as well as using dedicated softwares, and division between ventilation pixels and perfusion pixels were done to produce the V/Q map. Also, in order to characterize the distribution of the V/Q, the following numerical indices were calculated; mean, median, mode, standard deviation (SD), coefficient of variation (CV), skewness, kurtosis, and fractal dimension (FD). Pulmonary function tests and blood gas parameters were measured using standard institutional procedures. Results In the whole group, VC, %VC, and FEV1 decreased significantly after resection. FEV1.0% was increased significantly after resection. No significant changes were seen in PaO2, PaCO2, and DLCO/VA before and after resection. The mean, median, mode, SD, skewness, kurtosis and FD of the V/Q did not change significantly before and after resection. A marginal but significant decrease in CV was seen before versus after resection. Conclusions Overall, it was considered that the V/Q maps could be adequately generated in this study. With further accumulation of data, V/Q map generated by dual energy CT may become one of the potentially useful tools for functional lung imaging. Trial registration This trial was registered in University Medical Information Network in Japan (UMIN000010023) on 13Feb2013.
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Affiliation(s)
- Kohei Aoki
- Department of General Thoracic Surgery, Saitama Medical University, Medical Center, 1981 Kamoda, Kawagoeshi, Saitama, 350-8550, Japan
| | - Yotaro Izumi
- Department of General Thoracic Surgery, Saitama Medical University, Medical Center, 1981 Kamoda, Kawagoeshi, Saitama, 350-8550, Japan.
| | - Wataru Watanabe
- Department of Radiology, Saitama Medical University, Medical Center, 1981 Kamoda, Kawagoeshi, Saitama, 350-8550, Japan
| | - Yuji Shimizu
- Department of Radiology, Saitama Medical University, Medical Center, 1981 Kamoda, Kawagoeshi, Saitama, 350-8550, Japan
| | - Hisato Osada
- Department of Radiology, Saitama Medical University, Medical Center, 1981 Kamoda, Kawagoeshi, Saitama, 350-8550, Japan
| | - Norinari Honda
- Department of Radiology, Saitama Medical University, Medical Center, 1981 Kamoda, Kawagoeshi, Saitama, 350-8550, Japan
| | - Toshihide Itoh
- Research and Collaboration Department, Siemens Healthcare, 1-11-1 Osaki, Shinagawa-ku, Tokyo, 141-8644, Japan
| | - Mitsuo Nakayama
- Department of General Thoracic Surgery, Saitama Medical University, Medical Center, 1981 Kamoda, Kawagoeshi, Saitama, 350-8550, Japan
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Kyoyama H, Hirata Y, Kikuchi S, Sakai K, Saito Y, Mikami S, Moriyama G, Yanagita H, Watanabe W, Otani K, Honda N, Uematsu K. Evaluation of pulmonary function using single-breath-hold dual-energy computed tomography with xenon: Results of a preliminary study. Medicine (Baltimore) 2017; 96:e5937. [PMID: 28099359 PMCID: PMC5279104 DOI: 10.1097/md.0000000000005937] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Xenon-enhanced dual-energy computed tomography (xenon-enhanced CT) can provide lung ventilation maps that may be useful for assessing structural and functional abnormalities of the lung. Xenon-enhanced CT has been performed using a multiple-breath-hold technique during xenon washout. We recently developed xenon-enhanced CT using a single-breath-hold technique to assess ventilation. We sought to evaluate whether xenon-enhanced CT using a single-breath-hold technique correlates with pulmonary function testing (PFT) results.Twenty-six patients, including 11 chronic obstructive pulmonary disease (COPD) patients, underwent xenon-enhanced CT and PFT. Three of the COPD patients underwent xenon-enhanced CT before and after bronchodilator treatment. Images from xenon-CT were obtained by dual-source CT during a breath-hold after a single vital-capacity inspiration of a xenon-oxygen gas mixture. Image postprocessing by 3-material decomposition generated conventional CT and xenon-enhanced images.Low-attenuation areas on xenon images matched low-attenuation areas on conventional CT in 21 cases but matched normal-attenuation areas in 5 cases. Volumes of Hounsfield unit (HU) histograms of xenon images correlated moderately and highly with vital capacity (VC) and total lung capacity (TLC), respectively (r = 0.68 and 0.85). Means and modes of histograms weakly correlated with VC (r = 0.39 and 0.38), moderately with forced expiratory volume in 1 second (FEV1) (r = 0.59 and 0.56), weakly with the ratio of FEV1 to FVC (r = 0.46 and 0.42), and moderately with the ratio of FEV1 to its predicted value (r = 0.64 and 0.60). Mode and volume of histograms increased in 2 COPD patients after the improvement of FEV1 with bronchodilators. Inhalation of xenon gas caused no adverse effects.Xenon-enhanced CT using a single-breath-hold technique depicted functional abnormalities not detectable on thin-slice CT. Mode, mean, and volume of HU histograms of xenon images reflected pulmonary function. Xenon images obtained with xenon-enhanced CT using a single-breath-hold technique can qualitatively depict pulmonary ventilation. A larger study comprising only COPD patients should be conducted, as xenon-enhanced CT is expected to be a promising technique for the management of COPD.
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Affiliation(s)
| | | | | | | | | | | | | | - Hisami Yanagita
- Department of Radiology, Saitama Medical Center, Saitama Medical University, Saitama
| | - Wataru Watanabe
- Department of Radiology, Saitama Medical Center, Saitama Medical University, Saitama
| | - Katharina Otani
- Research and Collaborations Department, Siemens Healthcare KK, Tokyo, Japan
| | - Norinari Honda
- Department of Radiology, Saitama Medical Center, Saitama Medical University, Saitama
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Hwang HJ, Hoffman EA, Lee CH, Goo JM, Levin DL, Kauczor HU, Seo JB. The role of dual-energy computed tomography in the assessment of pulmonary function. Eur J Radiol 2016; 86:320-334. [PMID: 27865580 DOI: 10.1016/j.ejrad.2016.11.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 11/02/2016] [Accepted: 11/04/2016] [Indexed: 01/05/2023]
Abstract
The assessment of pulmonary function, including ventilation and perfusion status, is important in addition to the evaluation of structural changes of the lung parenchyma in various pulmonary diseases. The dual-energy computed tomography (DECT) technique can provide the pulmonary functional information and high resolution anatomic information simultaneously. The application of DECT for the evaluation of pulmonary function has been investigated in various pulmonary diseases, such as pulmonary embolism, asthma and chronic obstructive lung disease and so on. In this review article, we will present principles and technical aspects of DECT, along with clinical applications for the assessment pulmonary function in various lung diseases.
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Affiliation(s)
- Hye Jeon Hwang
- Department of Radiology, Hallym University College of Medicine, Hallym University Sacred Heart Hospital, 22, Gwanpyeong-ro 170beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do 431-796, Republic of Korea
| | - Eric A Hoffman
- Departments of Radiology, Medicine, and Biomedical Engineering, University of Iowa, 200 Hawkins Dr, CC 701 GH, Iowa City, IA 52241, United States
| | - Chang Hyun Lee
- Department of Radiology, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul 110-799, Republic of Korea
| | - Jin Mo Goo
- Department of Radiology, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul 110-799, Republic of Korea
| | - David L Levin
- Department of Radiology, Mayo Clinic College of Medicine, 200 First Street, SW, Rochester, MN 55905, United States
| | - Hans-Ulrich Kauczor
- Diagnostic and Interventional Radiology, University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany; Translational Lung Research Center Heidelberg (TLRC), Member of the German Center for Lung Research (DZL), Im Neuenheimer Feld 400, 69120 Heidelberg, Germany
| | - Joon Beom Seo
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1, Pungnap 2-dong, Songpa-ku, Seoul, 05505, Republic of Korea.
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Yabuuchi H, Kawanami S, Kamitani T, Yonezawa M, Yamasaki Y, Yamanouchi T, Nagao M, Okamoto T, Honda H. Prediction of post-operative pulmonary function after lobectomy for primary lung cancer: A comparison among counting method, effective lobar volume, and lobar collapsibility using inspiratory/expiratory CT. Eur J Radiol 2016; 85:1956-1962. [DOI: 10.1016/j.ejrad.2016.08.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 08/19/2016] [Accepted: 08/25/2016] [Indexed: 12/25/2022]
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Hong SR, Chang S, Im DJ, Suh YJ, Hong YJ, Hur J, Kim YJ, Choi BW, Lee HJ. Feasibility of Single Scan for Simultaneous Evaluation of Regional Krypton and Iodine Concentrations with Dual-Energy CT: An Experimental Study. Radiology 2016; 281:597-605. [PMID: 27203543 DOI: 10.1148/radiol.16152429] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Purpose To evaluate the feasibility of a simultaneous single scan of regional krypton and iodine concentrations by using dual-energy computed tomography (CT). Materials and Methods The study was approved by the institutional animal experimental committee. An airway obstruction model was first made in 10 beagle dogs, and a pulmonary arterial occlusion was induced in each animal after 1 week. For each model, three sessions of dual-energy CT (80% krypton ventilation [krypton CT], 80% krypton ventilation with iodine enhancement [mixed-contrast agent CT], and iodine enhancement [iodine CT]) were performed. Krypton maps were made from krypton and mixed-contrast agent CT, and iodine maps were made from iodine and mixed-contrast agent CT. Observers measured overlay Hounsfield units of the diseased and contralateral segments on each map. Values were compared by using the Wilcoxon signed-rank test. Results In krypton maps of airway obstruction, overlay Hounsfield units of diseased segments were significantly decreased compared with those of contralateral segments in both krypton and mixed-contrast agent CT (P = .005 for both). However, the values of mixed-contrast agent CT were significantly higher than those of krypton CT for both segments (P = .005 and .007, respectively). In iodine maps of pulmonary arterial occlusion, values were significantly lower in diseased segments than in contralateral segments for both iodine and mixed-contrast agent CT (P = .005 for both), without significant difference between iodine and mixed-contrast agent CT for both segments (P = .126 and .307, respectively). Conclusion Although some limitations may exist, it might be feasible to analyze regional krypton and iodine concentrations simultaneously by using dual-energy CT. © RSNA, 2016.
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Affiliation(s)
- Sae Rom Hong
- From the Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea
| | - Suyon Chang
- From the Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea
| | - Dong Jin Im
- From the Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea
| | - Young Joo Suh
- From the Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea
| | - Yoo Jin Hong
- From the Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea
| | - Jin Hur
- From the Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea
| | - Young Jin Kim
- From the Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea
| | - Byoung Wook Choi
- From the Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea
| | - Hye-Jeong Lee
- From the Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea
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van Elmpt W, Landry G, Das M, Verhaegen F. Dual energy CT in radiotherapy: Current applications and future outlook. Radiother Oncol 2016; 119:137-44. [DOI: 10.1016/j.radonc.2016.02.026] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 01/13/2016] [Accepted: 02/28/2016] [Indexed: 11/17/2022]
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Sudarski S, Hagelstein C, Weis M, Schoenberg SO, Apfaltrer P. Dual-energy snap-shot perfusion CT in suspect pulmonary nodules and masses and for lung cancer staging. Eur J Radiol 2015; 84:2393-400. [DOI: 10.1016/j.ejrad.2015.09.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 09/27/2015] [Indexed: 10/23/2022]
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Perspectives of Novel Imaging Techniques for Staging, Therapy Response Assessment, and Monitoring of Surveillance in Lung Cancer: Summary of the Dresden 2013 Post WCLC-IASLC State-of-the-Art Imaging Workshop. J Thorac Oncol 2015; 10:237-49. [DOI: 10.1097/jto.0000000000000412] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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van Elmpt W, Zegers CML, Das M, De Ruysscher D. Imaging techniques for tumour delineation and heterogeneity quantification of lung cancer: overview of current possibilities. J Thorac Dis 2014; 6:319-27. [PMID: 24688776 DOI: 10.3978/j.issn.2072-1439.2013.08.62] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Accepted: 08/21/2013] [Indexed: 01/05/2023]
Abstract
Imaging techniques for the characterization and delineation of primary lung tumours and lymph nodes are a prerequisite for adequate radiotherapy. Numerous imaging modalities have been proposed for this purpose, but only computed tomography (CT) and FDG-PET have been implemented in clinical routine. Hypoxia PET, dynamic contrast-enhanced CT (DCE-CT), dual energy CT (DECT) and (functional) magnetic resonance imaging (MRI) hold promise for the future. Besides information on the primary tumour, these techniques can be used for quantification of tissue heterogeneity and response. In the future, treatment strategies may be designed which are based on imaging techniques to optimize individual treatment.
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Affiliation(s)
- Wouter van Elmpt
- 1 Department of Radiation Oncology (MAASTRO), 2 Department of Radiology, GROW, School for Oncology and Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands ; 3 Radiation Oncology, University Hospitals Leuven/KU Leuven, Leuven, Belgium
| | - Catharina M L Zegers
- 1 Department of Radiation Oncology (MAASTRO), 2 Department of Radiology, GROW, School for Oncology and Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands ; 3 Radiation Oncology, University Hospitals Leuven/KU Leuven, Leuven, Belgium
| | - Marco Das
- 1 Department of Radiation Oncology (MAASTRO), 2 Department of Radiology, GROW, School for Oncology and Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands ; 3 Radiation Oncology, University Hospitals Leuven/KU Leuven, Leuven, Belgium
| | - Dirk De Ruysscher
- 1 Department of Radiation Oncology (MAASTRO), 2 Department of Radiology, GROW, School for Oncology and Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands ; 3 Radiation Oncology, University Hospitals Leuven/KU Leuven, Leuven, Belgium
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Xenon-Enhanced Dual-Energy CT Lung Ventilation Imaging: Techniques and Clinical Applications. AJR Am J Roentgenol 2014; 202:309-17. [PMID: 24450670 DOI: 10.2214/ajr.13.11191] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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