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Jin H, Su Z. SU-E-T-225: A Comprehensive Evaluation of Real-Time Motion Tracking of a Surface Imaging System for Lung Treatment. Med Phys 2012; 39:3755. [PMID: 28517319 DOI: 10.1118/1.4735288] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE Applicability of the AlignRT surface imaging system was extensively investigated for real-time motion tracking in radiation therapy of lung cancer. METHODS A 4D computer-controlled motion phantom was employed to simulate a human breathing motion. An anthropomorphic thoracic phantom (a coronal cross-sectional area: ∼1,200 cm2 ) was monitored during the 4D motion tracking. A breathing cycle from a healthy subject (breathing frequency: 0.2 Hz; maximum amplitude: vertical 7 mm, longitudinal 6 mm, and lateral 1.2 mm) was monitored and fed into the phantom control system. The real time monitoring was investigated by modifying a region of detection (the whole, a half, and a quarter of the area) and combination of 3 cameras (patient left, middle, and right). RESULTS The real-time tracking errors (detected breathing motion - the input of the subject's breathing) of the phantom motion using one camera (lateral, longitudinal, vertical) were (0.02±0.14 mm, -0.23±0.48 mm, -0.10±0.48 mm) with ipsilateral halves of the area (frame rate: 1.52 Hz), (0.06±0.10 mm, -0.30±0.30 mm, -0.03-0.35 mm) with ipsilateral quarters (frame rate: 1.95 Hz), and (0.19±0.96 mm, 0.29±1.50 mm, -0.46±1.58 mm) with contralateral quarters (frame rate: 3.04 Hz). The detection errors using 2-camera combinations (left-middle and right-middle) were (-0.06±0.06 mm, -0.43±0.21 mm, 0.00±0.22 mm) for the ipsilateral quarters and (-0.62±0.18 mm, -1.20±0.37 mm, 0.03±0.30 mm) for the contralateral quarters, respectively. The 3-camera tracking using halves of the area presented an error of (-0.04±0.12 mm, -0.69±0.35 mm, -0.08±0.38 mm) with a frame rate of 0.62 Hz. CONCLUSIONS To guarantee a sub-millimeter accuracy of realtime motion tracking in the lung treatment, combination of 2 cameras or less, a frame rate of greater than the Nyquist frequency (in this study fN = 2B (breathing frequency) = 0.4 Hz), and a tracking area of less than an ipsilateral half of thoracic area is highly recommended.
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Su Z, Cook RD. Inner envelopes: efficient estimation in multivariate linear regression. Biometrika 2012. [DOI: 10.1093/biomet/ass024] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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153
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Lopatiuk-Tirpak O, Su Z, Hsi W, Zeidan O, Meeks S. SU-E-T-14: Modeling of 3D Positron Emission Activity Distributions Induced by Proton Irradiation: A Semi-Empirical Method. Med Phys 2012; 39:3705. [DOI: 10.1118/1.4735068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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154
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Wu J, Su Z, Li Z. WE-E-213CD-10: A Robust 2D/3D Image Registration System for Pediatric Patient Setup in External Beam Radiotherapy. Med Phys 2012; 39:3961. [DOI: 10.1118/1.4736166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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155
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Su Z, Wu J, Kirby N, Li Z, Barani I. SU-E-T-568: Hippocampus and Neural Stemcell Sparing Using Proton Therapy in Whole Brain Irradiation. Med Phys 2012; 39:3836. [DOI: 10.1118/1.4735657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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156
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Su Z, Slopsema R, Flampouri S, Li Z. SU-E-J-214: Target Intrafraction Motion Dosimetric Impact on 5-Fraction Proton Prostate SBRT. Med Phys 2012; 39:3702. [PMID: 28519044 DOI: 10.1118/1.4735054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE To investigate dosimetric impact of prostate intra-fraction motion to five fraction hypofractionated proton treatment with uniform scanning (US) and double scattering (DS) techniques using real-time prostate tracking data from electromagnetic transponder system. METHODS Prostate intra-fraction motion can have spatiotemporal interplay with proton treatment delivery. Five fraction (7.25Gy/fraction) prostate proton stereotactic body radiotherapy (SBRT) treatments were simulated for total 14 patients using in-house proton treatment simulation program. The US treatment was simulated by rigidly moving CTV through a series of temporal-spatial dose matrices indexed by energy layers, according to prostate motion traces. The CTV temporal doses of the whole treatment fraction were obtained and summed as final prostate CTV dose. The DS treatment was simulated by moving CTV through the energy layer summed dose matrix. For all patients, the fraction doses and the total dose to the CTV were presented for both DS and US treatments. RESULTS The CTV dose of different fractions indicated that its dose degradation depends on magnitude and direction of prostate intra-fraction motion and is patient specific. For one of the prostate motion traces investigated, only 70% of CTV received 100% prescribed dose for a simulated US treatment and 79% CTV had 100% dose for a DS treatment. Furthermore, DVH and isodose graphs of both treatments revealed that intra-fraction motion caused significant CTV cold and hot spots in US treatment whereas only cause CTV underdose in DS treatment. CONCLUSIONS Intra-fraction prostate motion causes dose uncertainty to CTV. In the 5 fraction prostate SBRT, prostate intra-fraction motion causes significant target dose degradation. In US treatment, spatiotemporal interplay between energy layers delivery and prostate motion leads to hot and cold spots in CTV for some patients with severe prostate intra-fraction motion. Further investigation of intra-fraction motion management and its impact on CTV dose is necessary.
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Henderson R, Hoppe B, Nichols R, Mendenhall W, Marcus R, Su Z, Williams C, Morris C, Mendenhall N. Image-Guided Proton Therapy for Low- and Intermediate-Risk Prostate Cancer: Three-Year Results of Two Prospective Trials. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Hoppe B, Flampouri S, Su Z, Latif N, Dang N, Lynch J, Joyce M, Sandler E, Li Z, Mendenhall N. Reducing the Dose to the Cardiac Chambers, Valves, and Vessels with Proton Therapy Compared with 3D-CRT and IMRT in Patients with Mediastinal Hodgkin Lymphoma. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Su Z, Zhao T, Li Z, Hoppe B, Henderson R, Mendenhall W, Nichols C, Marcus R, Mendenhall N. Reduction of Prostate Intrafraction Motion using Gas-release Rectal Balloons. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zhao Z, Toramatsu C, Slopsema R, Su Z, Li Z. TH-C-BRB-09: The Feasibility of Treating Prostate Patients without Using Range Compensator in Passively Scattered Proton Therapy: A Dosimetry Study. Med Phys 2011. [DOI: 10.1118/1.3613514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Su Z, Lopatiuk-Tirpak O, Zeidan O, Slopsema R, Flampouti S, Meeks S, Li Z. SU-E-T-351: Dosimetric Impact of Periodic and Random Motion on Proton Double-Scattering and Uniform-Scanning Deliveries. Med Phys 2011. [DOI: 10.1118/1.3612305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Maryanski M, Lopatiuk-Tirpak O, Su Z, Li Z, Zeidan O, Meeks S. MO-F-214-06: Linear Energy Transfer Response of Polymer Gel Dosimeters in Therapeutic Proton Beams. Med Phys 2011. [DOI: 10.1118/1.3613019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Lopatiuk-Tirpak O, Su Z, Li Z, Hsi W, Meeks S, Zeidan O. TU-G-BRB-07: Evaluation of Tissue-Equivalent 3D Polymer Gel Dosimeters as Phantoms for PET/CT Verification of Proton Beam Deliveries. Med Phys 2011. [DOI: 10.1118/1.3613227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Jin H, Su Z, Slopsema R, Li Z. SU-E-T-355: Dose and Range Perturbation by LiF TLD-100 in Proton Beam Therapy. Med Phys 2011. [DOI: 10.1118/1.3612309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Su Z, Zhao Z, Zhao T, Li Z. SU-E-T-576: A Comprehensive Approach for SBRT Irradiation on RPC Spine Phantom. Med Phys 2011. [DOI: 10.1118/1.3612538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Su Z, Huang W, Gu X. Comment on "Positive Selection of Tyrosine Loss in Metazoan Evolution". Science 2011; 332:917; author reply 917. [DOI: 10.1126/science.1187374] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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167
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Li J, Guo J, Su Z, Hu M, Liu W, Wei Q. Calcineurin subunit B activates dendritic cells and acts as a cancer vaccine adjuvant. Int Immunol 2011; 23:327-34. [DOI: 10.1093/intimm/dxr008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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168
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Lv M, Liu Y, Zhang J, Sun L, Liu Z, Zhang S, Wang B, Su D, Su Z. Roles of inflammation response in microglia cell through Toll-like receptors 2/interleukin-23/interleukin-17 pathway in cerebral ischemia/reperfusion injury. Neuroscience 2011; 176:162-72. [DOI: 10.1016/j.neuroscience.2010.11.066] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2010] [Revised: 11/30/2010] [Accepted: 11/30/2010] [Indexed: 02/06/2023]
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169
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Su Z, Bijen J, Fraaij A. The Interaction of Polymer Dispersions with Portland Cement Paste. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-289-199] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AbstractResearch has been done on the interaction of two types of polymer dispersions, a styrene acrylate (SA) and a polyvinylidene chloride (PVDLC), with portland cement by means of a COULTER particle size analyzer and a filtration technique. It was found that over 50% of the polymer SA particles were adsorbed onto the cement surface, the others did not adhere to cement grains and remained dispersed in the mixing water. However, the polymer dispersion PVDLC caused a quick flocculation and coagulation of cement grains and stiffening of the paste. Hardly any free polymer particles of this polymer were found in the liquid phase.
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Scheerens H, Arron J, Su Z, Zheng Y, Putnam W, Erickson R, Choy D, Lee J, Harris J, Jarjour N. Predictive and Pharmacodynamic Biomarkers of Interleukin-13 Blockade: Effect of Lebrikizumab on Late Phase Asthmatic Response to Allergen Challenge. J Allergy Clin Immunol 2011. [DOI: 10.1016/j.jaci.2010.12.651] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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171
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Su Z, Cook RD. Partial envelopes for efficient estimation in multivariate linear regression. Biometrika 2011. [DOI: 10.1093/biomet/asq063] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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172
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Xiao S, Xue M, Wan Y, Su Z. Gynandroblastoma with the symptoms of infertility and secondary amenorrhea: a case report. CLIN EXP OBSTET GYN 2011; 38:419-420. [PMID: 22268290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The case of a female patient who failed to get pregnant due to delayed menstruation is reported. Gynecological examination showed that the patient had a male pubic distribution, hypertrophic clitoris, unobstructed vagina and hypertrophic cervices with smooth and medium texture. B ultrasonic examination detected a 42 x 30 mm in size medium echo mass. This mass had irregular shape, smooth surface, relatively clear boundary and hard texture. Examination with paraffin-embedded section indicated that the tumor was composed of supporting cells and to a lesser amount of interstitial components. Some regions had particle-like cell differentiation. These results suggested that the tumor was gynandroblastoma. We found that the increased level of serum testosterone in the patient was the reason for amenorrhea and infertility. The diagnosis and treatment for patients with gynandroblastoma is also discussed.
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Su Z, Xia J, Shao W, Cui Y, Tai S, Ekberg H, Corbascio M, Chen J, Qi Z. Small Islets are Essential for Successful Intraportal Transplantation in a Diabetes Mouse Model. Scand J Immunol 2010; 72:504-10. [DOI: 10.1111/j.1365-3083.2010.02466.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hoppe B, Henderson R, Nichols R, Marcus R, Mendenhall W, Costa J, Williams C, Su Z, Li Z, Mendenhall N. Early Outcomes following Proton Therapy for Prostate Cancer in Men 55 Years Old and Younger. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Parks H, Henderson R, Hoppe B, Nichols R, Marcus R, Mendenhall W, Williams C, Su Z, Li Z, Mendenhall N. Is There a Role for Proton Therapy after High-intensity Focused Ultrasound and Cryosurgery Failures in Prostate Cancer? Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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