[논문]High‐dose MVCT image guidance for stereotactic body radiation therapy

Westerly, David C.; Schefter, Tracey E.; Kavanagh, Brian D.; Chao, Edward; Lucas, Dan; Flynn, Ryan T.; Miften, Moyed

doi:10.1118/1.4736416

High‐dose MVCT image guidance for stereotactic body radiation therapy

Medical physics, v.39 no.8, 2012년, pp.4812 - 4819

Westerly, David C. , Schefter, Tracey E. , Kavanagh, Brian D. , Chao, Edward , Lucas, Dan , Flynn, Ryan T. , Miften, Moyed

Abstract ▼ AI-Helper

Purpose:Stereotactic body radiation therapy (SBRT) is a potent treatment for early stage primary and limited metastatic disease. Accurate tumor localization is essential to administer SBRT safely and effectively. Tomotherapy combines helical IMRT with onboard megavoltage CT (MVCT) imaging and is well suited for SBRT; however, MVCT results in reduced soft tissue contrast and increased image noise compared with kilovoltage CT. The goal of this work was to investigate the use of increased imaging doses on a clinical tomotherapy machine to improve image quality for SBRT image guidance.Methods:Two nonstandard, high‐dose imaging modes were created on a tomotherapy machine by increasing the linear accelerator (LINAC) pulse rate from the nominal setting of 80 Hz, to 160 Hz and 300 Hz, respectively. Weighted CT dose indexes (wCTDIs) were measured for the standard, medium, and high‐dose modes in a 30 cm solid water phantom using a calibrated A1SL ion chamber. Image quality was assessed from scans of a customized image quality phantom. Metrics evaluated include: contrast‐to‐noise ratios (CNRs), high‐contrast spatial resolution, image uniformity, and percent image noise. In addition, two patients receiving SBRT were localized using high‐dose MVCT scans. Raw detector data collected after each scan were used to reconstruct standard‐dose images for comparison.Results:MVCT scans acquired using a pitch of 1.0 resulted in wCTDI values of 2.2, 4.7, and 8.5 cGy for the standard, medium, and high‐dose modes respectively. CNR values for both low and high‐contrast materials were found to increase with the square root of dose. Axial high‐contrast spatial resolution was comparable for all imaging modes at 0.5 lp/mm. Image uniformity was improved and percent noise decreased as the imaging dose increased. Similar improvements in image quality were observed in patient images, with decreases in image noise being the most notable.Conclusions:High‐dose imaging modes are made possible on a clinical tomotherapy machine by increasing the LINAC pulse rate. Increasing the imaging dose results in increased CNRs; making it easier to distinguish the boundaries of low contrast objects. The imaging dose levels observed in this work are considered acceptable at our institution for SBRT treatments delivered in 3-5 fractions.

참고문헌 (35)

Rusthoven, Kyle E., Kavanagh, Brian D., Cardenes, Higinia, Stieber, Volker W., Burri, Stuart H., Feigenberg, Steven J., Chidel, Mark A., Pugh, Thomas J., Franklin, Wilbur, Kane, Madeleine, Gaspar, Laurie E., Schefter, Tracey E.. Multi-Institutional Phase I/II Trial of Stereotactic Body Radiation Therapy for Liver Metastases. Journal of clinical oncology : official journal of the American Society of Clinical Oncology, vol.27, no.10, 1572-1578.

상세보기
10.1186/1748‐717X‐6‐3
Grills, Inga S., Mangona, Victor S., Welsh, Robert, Chmielewski, Gary, McInerney, Erika, Martin, Shannon, Wloch, Jennifer, Ye, Hong, Kestin, Larry L.. Outcomes After Stereotactic Lung Radiotherapy or Wedge Resection for Stage I Non-Small-Cell Lung Cancer. Journal of clinical oncology : official journal of the American Society of Clinical Oncology, vol.28, no.6, 928-935.

상세보기
Benedict, Stanley H., Yenice, Kamil M., Followill, David, Galvin, James M., Hinson, William, Kavanagh, Brian, Keall, Paul, Lovelock, Michael, Meeks, Sanford, Papiez, Lech, Purdie, Thomas, Sadagopan, Ramaswamy, Schell, Michael C., Salter, Bill, Schlesinger, David J., Shiu, Almon S., Solberg, Timothy, Song, Danny Y., Stieber, Volker, Timmerman, Robert, Tomé, Wolfgang A., Verellen, Dirk, Wang, Lu, Yin, Fang‐Fang. Stereotactic body radiation therapy: The report of AAPM Task Group 101. Medical physics, vol.37, no.8, 4078-4101.

상세보기
Dawson, Laura A., Jaffray, David A.. Advances in Image-Guided Radiation Therapy. Journal of clinical oncology : official journal of the American Society of Clinical Oncology, vol.25, no.8, 938-946.

상세보기
10.1016/S0360‐3016(03)00090‐7
Mackie, T. Rock, Holmes, Timothy, Swerdloff, Stuart, Reckwerdt, Paul, Deasy, Joseph O., Yang, James, Paliwal, Bhudatt, Kinsella, Timothy. Tomotherapy: A new concept for the delivery of dynamic conformal radiotherapy. Medical physics, vol.20, no.6, 1709-1719.

상세보기
10.1016/S1053‐4296(99)80058‐7
10.1088/0031‐9155/44/10/316
Hodge, Wes, Tomé, Wolfgang A., Jaradat, Hazim A., Orton, Nigel P., Khuntia, Deepak, Traynor, Anne, Weigel, Tracey, Mehta, Minesh P.. Feasibility report of image guided stereotactic body radiotherapy (IG-SBRT) with tomotherapy for early stage medically inoperable lung cancer using extreme hypofractionation. Acta oncologica, vol.45, no.7, 890-896.

상세보기
10.1097/00000421‐200302000‐00014
Fiorino, Claudio, Dell'Oca, Italo, Pierelli, Alessio, Broggi, Sara, Martin, Elena De, Muzio, Nadia Di, Longobardi, Barbara, Fazio, Ferruccio, Calandrino, Ricardo. Significant improvement in normal tissue sparing and target coverage for head and neck cancer by means of helical tomotherapy. Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology, vol.78, no.3, 276-282.

상세보기
Stutzel, J., Oelfke, U., Nill, S.. A quantitative image quality comparison of four different image guided radiotherapy devices. Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology, vol.86, no.1, 20-24.

상세보기
Pouliot, Jean, Bani-Hashemi, Ali, Josephine Chen, Ali, Svatos, Michelle, Ghelmansarai, Farhad, Mitschke, Matthias, Aubin, Michele, Xia, Ping, Morin, Olivier, Bucci, Kara, Roach III, Mack, Hernandez III, Paco, Zheng III, Zirao, Hristov III, Dimitre, Verhey III, Lynn. Low-dose megavoltage cone-beam CT for radiation therapy. International journal of radiation oncology, biology, physics, vol.61, no.2, 552-560.

상세보기
Faddegon, Bruce A., Wu, Vincent, Pouliot, Jean, Gangadharan, Bijumon, Bani‐Hashemi, Ali. Low dose megavoltage cone beam computed tomography with an unflattened 4 MV beam from a carbon target. Medical physics, vol.35, no.12, 5777-5786.

상세보기
Herman, Michael G., Balter, James M., Jaffray, David A., McGee, Kiarin P., Munro, Peter, Shalev, Shlomo, Van Herk, Marcel, Wong, John W.. Clinical use of electronic portal imaging: Report of AAPM Radiation Therapy Committee Task Group 58. Medical physics, vol.28, no.5, 712-737.

상세보기
10.1016/0010‐4825(76)90068‐8
Simpson, R. G., Chen, C. T., Grubbs, E. A., Swindell, W.. A 4‐MV CT scanner for radiation therapy: The prototype system. Medical physics, vol.9, no.4, 574-579.

상세보기
Gayou, Olivier, Parda, David S., Johnson, Mark, Miften, Moyed. Patient dose and image quality from mega‐voltage cone beam computed tomography imaging. Medical physics, vol.34, no.2, 499-506.

상세보기
Meeks, Sanford L., Harmon Jr., Joseph F., Langen, Katja M., Willoughby, Twyla R., Wagner, Thomas H., Kupelian, Patrick A.. Performance characterization of megavoltage computed tomography imaging on a helical tomotherapy unit. Medical physics, vol.32, no.8, 2673-2681.

상세보기
Keller, H., Glass, M., Hinderer, R., Ruchala, K., Jeraj, R., Olivera, G., Mackie, T. Rock. Monte Carlo study of a highly efficient gas ionization detector for megavoltage imaging and image-guided radiotherapy. Medical physics, vol.29, no.2, 165-175.

상세보기
Jeraj, Robert, Mackie, Thomas R., Balog, John, Olivera, Gustavo, Pearson, Dave, Kapatoes, Jeff, Ruchala, Ken, Reckwerdt, Paul. Radiation characteristics of helical tomotherapy. Medical physics, vol.31, no.2, 396-404.

상세보기
Murphy, Martin J., Balter, James, Balter, Stephen, BenComo Jr., Jose A., Das, Indra J., Jiang, Steve B., Ma, C.‐M., Olivera, Gustavo H., Rodebaugh, Raymond F., Ruchala, Kenneth J., Shirato, Hiroki, Yin, Fang‐Fang. The management of imaging dose during image‐guided radiotherapy: Report of the AAPM Task Group 75. Medical physics, vol.34, no.10, 4041-4063.

상세보기
Droege, Ronald T., Rzeszotarski, Mark S.. Modulation Transfer Function From The Variance Of Cyclic Bar Images. Optical engineering : the journal of the Society of Photo-optical Instrumentation Engineers, vol.23, no.1,

상세보기
Nelms, David W., Shukla, Hemant I., Nixon, Earl, Bayouth, John E., Flynn, Ryan T.. Assessment of three dead detector correction methods for cone‐beam computed tomography. Medical physics, vol.36, no.10, 4569-4576.

상세보기
Rajapakshe, R., Luchka, K., Shalev, S.. A quality control test for electronic portal imaging devices. Medical physics, vol.23, no.7, 1237-1244.

상세보기
The Essential Physics of Medical Imaging Bushberg J. T. 273 2002
Mail, N., Moseley, D. J., Siewerdsen, J. H., Jaffray, D. A.. The influence of bowtie filtration on cone‐beam CT image quality. Medical physics, vol.36, no.1, 22-32.

상세보기
10.1016/S0065‐2539(08)61102‐6
10.1088/0031‐9155/53/4/001
Brenner, David J., Hall, Eric J.. Computed Tomography - An Increasing Source of Radiation Exposure. The New England journal of medicine, vol.357, no.22, 2277-2284.

상세보기
Hricak, Hedvig, Brenner, David J., Adelstein, S. James, Frush, Donald P., Hall, Eric J., Howell, Roger W., McCollough, Cynthia H., Mettler, Fred A., Pearce, Mark S., Suleiman, Orhan H., Thrall, James H., Wagner, Louis K.. Managing Radiation Use in Medical Imaging: A Multifaceted Challenge. Radiology, vol.258, no.3, 889-905.

상세보기
Miften, Moyed, Gayou, Olivier, Reitz, Bodo, Fuhrer, Russell, Leicher, Brian, Parda, David S.. IMRT planning and delivery incorporating daily dose from mega‐voltage cone‐beam computed tomography imaging. Medical physics, vol.34, no.10, 3760-3767.

상세보기
Morin, Olivier, Gillis, Amy, Descovich, Martina, Chen, Josephine, Aubin, Michèle, Aubry, Jean‐François, Chen, Hong, Gottschalk, Alexander R., Xia, Ping, Pouliot, Jean. Patient dose considerations for routine megavoltage cone‐beam CT imaging. Medical physics, vol.34, no.5, 1819-1827.

상세보기
Flynn, Ryan T., Hartmann, Julia, Bani‐Hashemi, Ali, Nixon, Earl, Alfredo, R., Siochi, C., Pennington, Edward C., Bayouth, John E.. Dosimetric characterization and application of an imaging beam line with a carbon electron target for megavoltage cone beam computed tomography. Medical physics, vol.36, no.6, 2181-2192.

상세보기

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High‐dose MVCT image guidance for stereotactic body radiation therapy

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