brachytherapy high dosage rate
Báo cáo y học: "Qualitative Dosimetric and Radiobiological Evaluation of High – Dose – Rate Interstitial brachytherapy Implant" doc
... van den Aardweg GJMJ, Levendag PC Pulse dose rate and fractionated high dose rate brachytherapy: Choice of brachytherapy schedules to replace low dose rate treatments Int J Radtiat Oncol Biol Phys ... distribution of HDR ISBT within target volume is highly non – uniform and has high dose gradient, hence equation (7) can not be directly applied to compute accurate TCP Hence, to get an appropriate expression ... target volume within the adjacent normal tissue is highly non-uniform, hence equation (11) can not be applied to calculate NTCP for such a high dose gradient For the purpose, entire volume of...
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Báo cáo khoa học: "Value of diffusion weighted MR imaging as an early surrogate parameter for evaluation of tumor response to high-dose-rate brachytherapy of colorectal liver metastase" docx
... man with colorectal liver metastasis in segment VII scheduled for high- dose -rate brachytherapy (HDR-BT) The implantation of one brachytherapy catheter was performed under MRI guidance (A) The tumor ... signal saturated 3D high resolution isotropic volume examination (THRIVE; TR = 5.4 ms, TE = 2.6 ms, flip angle = 12°, section thickness of mm) were acquired to depict the exact position of brachytherapy ... Interstitial HDR Brachytherapy Brachytherapy catheters were positioned in analgosedation using either CT fluoroscopy (n = 20; Aqilion 16, Toshiba medical systems, Otawara, Tochigi, Japan) or high field...
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Báo cáo khoa học: " In vivo assessment of catheter positioning accuracy and prolonged irradiation time on liver tolerance dose after single-fraction 192 Ir high-dose-rate brachytherapy" pot
... Oncology 2011, 6:107 http://www.ro-journal.com/content/6/1/107 Background Single-fraction 192Ir high- dose -rate brachytherapy (HDRBT) of the liver is an ablation technique which has shown promising results ... 20 ablation of liver metastases from colorectal carcinoma by computed tomography-guided high- dose -rate brachytherapy Int J Radiat Oncol Biol Phys 2010, 78(2):479-485 Mohnike K, Wieners G, Schwartz ... Lopez-Hänninen E, Gademann G, Peters N, Berg T, Malfertheiner P, Ricke J: Computed tomography-guided high- dose -rate brachytherapy in hepatocellular carcinoma: safety, efficacy, and effect on survival Int...
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Báo cáo khoa học: "High-dose rate brachytherapy (HDRB) for primary or recurrent cancer in the vagina" docx
... published studies with interstitial brachytherapy have reported data using lowdose -rate brachytherapy (LDRB) [2-9] There have been only few series using high- dose -rate brachytherapy (HDRB) for vaginal ... with high- doserate brachytherapy for isolated vaginal endometrial cancer recurrence Gynecol Oncol 2000, 101(3):445-449 Mock U, Kucera H, Fellner C, Knocke TH, Pötter R: High- dose -rate (HDR) brachytherapy ... Edwards RP: High- dose -rate interstitial brachytherapy for gynecologic malignancies Brachytherapy 2006, 5(4):218-222 Nag S, Gupta N: A simple method of obtaining equivalent doses for use in HDR brachytherapy...
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Báo cáo khoa học: "High-dose-rate brachytherapy for soft tissue sarcoma in children: a single institution experience" docx
... perpendicular to the ribbons The highest dose rate for which the isodose contour was continuous and covers the CTV was selected as the prescription dose rate The dose rates were selected according ... soft tissue sarcomas in infants and young children: High- dose -rate brachytherapy J Clin Oncol 1997, 15:3075-3083 Potter R, Knocke TH, Kovacs G: Brachytherapy in the combined modality treatment of ... comparable high rate of local control Thus, reductions in normal tissue doses decrease the probability of growth deformity, radiochemotherapy interactions, and theoretically, the rate of second...
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Báo cáo khoa học: "Analysis of health related quality of life (HRQoL) of patients with clinically localized prostate cancer, one year after treatment with external beam radiotherapy (EBRT) alone versus EBRT and high dose rate brachytherapy (HDRBT)" docx
... undergoing External Beam Radiotherapy Plus High Dose Rate Brachytherapy Boost Clin Oncol 2007, 19:S49 Vordermark D, Wulf J, Markert K, Baier K, Kölbl O, Beckmann G, Bratengeier K, Noe M, Schön G, Flentje ... AR, Roach M 3rd, Shinohara K: Combined modality treatment with highdose -rate brachytherapy boost for locally advanced prostate cancer Brachytherapy 2005, 4:202-206 Al-Salihi O, Mitra A, Payne H: ... radiotherapy (3D-CRT) or intensity-modulated radiotherapy (IMRT) with or without low-dose rate (LDR), high- dose rate (HDR) or particle beam boost [6-9] Patient characteristics This is a prospective...
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Báo cáo khoa học: "Dose volume histogram analysis of normal structures associated with accelerated partial breast irradiation delivered by high dose rate brachytherapy and comparison with whole breast external beam radiotherapy fields" potx
... patients treated with APBI have used brachytherapy [117] Initial data using multiple interstitial catheters using either high dose rate (HDR) or low dose rate (LDR) brachytherapy has shown promising ... Holdford D, Amir C, Archer KJ, Schmidt-Ullrich RK: Partial breast brachytherapy after lumpectomy: Low-dose -rate and high- dose -rate experience Int J Radiat Oncol Biol Phys 2003, 56(3):681-9 Baglan ... defects, possibly because these patients have significantly higher rates of radiotherapy set-up errors resulting in increased LV irradiation [34] Brachytherapy eliminates set-up errors due to the delivery...
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Báo cáo khoa học: " Salvage for cervical recurrences of head and neck cancer with dissection and interstitial high dose rate brachytherapy" ppsx
... Leung LC, O SK: High dose rate brachytherapy for early stage oral tongue cancer Head Neck 2002, 24(3):274-8 Strnad V, Geiger M, Lotter M, Sauer R: The role of pulsed-doserate brachytherapy in ... LP: Interstitial high- dose -rate brachytherapy combined with cervical dissection on head and neck cancer Head Neck 2005, 27(12):1035-41 Mazeron JJ, Noel G, Simon JM: Head and neck brachytherapy Semin ... Jauffret E: Brachytherapy in head and neck cancers Cancer Radiother 2003, 7(1):62-72 Novaes PERS, Gentil AC, Lima CGB Jr, Pellizzon ACA, Kowalski LP: Possibilities of high dose rate brachytherapy...
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Báo cáo khoa học: " Early observed transient prostate-specific antigen elevations on a pilot study of external beam radiation therapy and fractionated MRI guided High Dose Rate brachytherapy boost" doc
... Long-term outcome of high dose rate brachytherapy in radiotherapy of localised prostate cancer Radiother Oncol 2005, 74:157-161 Deger S, Boehmer D, Turk I, et al.: High dose rate brachytherapy of ... radiation therapy (EBRT) and/or brachytherapy are mainstays of local therapy Low dose rate (LDR) brachytherapy, with permanently implanted radioactive seeds, [2-6] and HDR brachytherapy, with temporarily ... 41:420-426 Martinez AA, Gustafson G, Gonzalez J, et al.: Dose escalation using conformal high- dose -rate brachytherapy improves outcome in unfavorable prostate cancer Int J Radiat Oncol Biol Phys...
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Do High Interest Rates Defend Currencies During Speculative Attacks? pot
... with high interest rates By raising interest rates high enough, the monetary authority can make it prohibitively costly for speculators to take short positions in the currency under attack High ... A (with a high devaluation probability and a low interest rate) and B (with a low devaluation probability and a high interest rate) , one might easily conclude that raising interest rates lowers ... result, as expectations of a devaluation force higher interest rates, which in turn impose greater costs on the economy In the end, high interest rates can have the perverse effect of increasing...
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BIS Working Papers No 312 China’s high saving rate: myth and reality potx
... (2009) suggest that the high- productivity and creditconstrained firms finance investment by internal saving and thus tend to generate high corporate saving while maintaining high return to capital ... only explain part of the high household saving rate in the 2000s Second, precautionary saving motives also help explain the higher personal saving rate The large-scale corporate restructuring and ... single explanation for China’s exceptionally high aggregate saving rate will almost surely be less than convincing Such a high and rising saving rate will inevitably have implications for China’s...
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Mechanical properties at high strain rates doc
... f3(T) as a product of three separate functions of strain, strain rate and temperature, which is a rough approximation especially in the case of moderate strain rates of i < 103s-l However, the ... strain as a function of temperature T and strain rate E [l91 Linear viscous behaviour At strain rates higher than some 103 S-' the stress is high enough, so that At, vanishes with respect to ... extension rate [26], c) Stress strain curves for different strain rates according to [27] Thermallv influenced mechanical instabilitv Flow curves determined in the range of high strain rates are...
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The Puzzle of Brazil''''s High Interest Rates pptx
... stability will be a function of the subsidized rate and the free 10 market rate – higher than the subsidized rate but lower than the free market rate The size of this effect is, however, difficult ... relatively high in Brazil compared with other emerging-market countries For a given equilibrium real interest rate, a higher inflation target is likely to be associated with a higher nominal rate However, ... Volatility Brazil has had a long history of high and volatile inflation Annual inflation was moderately high in the 1970s (averaging 30 percent); very high during 1980–88, (averaging over 200 percent);...
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Báo cáo hóa học: " Research Article Canceling Interferences for High Data Rate Time Reversal MIMO UWB System: A Precoding Approach" potx
... of bit error rate (BER) performance ultimately In this paper, we propose an ultra -high data rate TRMIMO-UWB system with space-time precoding Multiple antennas can increase data rate, whereas ... consideration [10], its performance becomes worst at high Eb /N0 , where the ISI and the residual MSI are strong Conclusion An ultra -high data rate TR-MIMO-UWB system with spacetime precoding is ... space-time precoding can effectively eliminate both ISI and MSI, and it is beneficial to achieve the high data rate of TR-MIMO-UWB system up to the order of Gbps without losing BER performance Since TR...
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Báo cáo hóa học: " Research Article The High-Resolution Rate-Distortion Function under the Structural Similarity Index" potx
... admit a simple closed-form expression However, when the coding rate is high, that is, when each pixel of the image is represented by a high number of bits, say more than 0.5 bpp, then we are able ... Figure shows the high- resolution SSIM-RDF for d(x, y) values below 0.27, corresponding to SSIM values above 0.73 Notice that the rate becomes negative at large distortions (i.e., small rates), which ... happens because the high- resolution assumption is clearly not satisfied and the approximations are therefore EURASIP Journal on Advances in Signal Processing 3.5 4.5 3.5 Rate (bpp) Rate (bpp) 2.5 1.5...
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Báo cáo hóa học: " Research Article Optimization of Linear Precoded OFDM for High-Data-Rate UWB Systems" pptx
... data rates higher than 200 Mbit/s, the LP-OFDM performance with r = 1/2 is also better than MBOA More generally, the proposed system is able to provide a wider range of data rates due to the high ... MBOA solution Table 1: MBOA data rates Data rate (Mbit/s) 53.3 80 110 160 200 320 400 480 Modulation QPSK QPSK QPSK QPSK QPSK QPSK QPSK QPSK Convolutional coding rate (r) 1/3 1/2 11/32 1/2 5/8 ... to fully take benefit of the residual frequency diversity In opposition, for high coding rates, that is, for coding rates r that tend to 1, the system tends to a noncoded system as the one considered...
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Báo cáo hóa học: " Research Article Optimization of Linear Precoded OFDM for High-Data-Rate UWB Systems" pdf
... data rates higher than 200 Mbit/s, the LP-OFDM performance with r = 1/2 is also better than MBOA More generally, the proposed system is able to provide a wider range of data rates due to the high ... MBOA solution Table 1: MBOA data rates Data rate (Mbit/s) 53.3 80 110 160 200 320 400 480 Modulation QPSK QPSK QPSK QPSK QPSK QPSK QPSK QPSK Convolutional coding rate (r) 1/3 1/2 11/32 1/2 5/8 ... to fully take benefit of the residual frequency diversity In opposition, for high coding rates, that is, for coding rates r that tend to 1, the system tends to a noncoded system as the one considered...
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Báo cáo hóa học: " Low Complexity Turbo Equalization for High Data Rate Wireless Communications" doc
... algorithm is suitable for high data -rate wireless communication systems with limited processing power D Ampeliotis and K Berberidis 10 1 10 2 10 2 Bit error rate 100 10 1 Bit error rate 100 10 3 10 4 ... on Figure A discrete memoryless source generates binary data bi , i = 1, , S These data, in blocks of length S, enter a convolutional encoder of rate R, so that new blocks of S/R bits (c j ... typical experiments Information bits were generated in bursts of S = 6144 bits Then an R.S.C code with generator matrix G(D) = [1((1 + D2 )/(1 + D + D2 ))] of rate R = 1/2 was applied, and the resulting...
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Báo cáo y học: " High recombination rates and hotspots in a Plasmodium falciparum genetic cross" docx
... progeny and the estimated recombination rates were higher than the chromosome-wide average rate by five-fold or more The 14 chromosomes are as marked and separated with the vertical dashed lines ... 4, 8, and showed relatively high average RR, whereas the three largest chromosomes (12 to 14) showed lower recombination rates (Table and Figure 2); however, the high RR in the five chromosomes ... used a high- density tiling array to estimate the genetic recombination rate among 32 progeny of a P falciparum genetic cross (7G8 × GB4) We detected 638 recombination events and constructed a highresolution...
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Báo cáo y học: " Reduction of the HIV-1 reservoir in resting CD4+ T-lymphocytes by high dosage intravenous immunoglobulin treatment: a proof-of-concept study" pot
... Tregs by IVIG has been demonstrated previously [25] Interestingly, HIV-1 infected individuals who control viremia without ART (so-called elite controllers) maintain high levels of these cells [26] ... resting CD4+ T-cells, plasma HIV-1 RNA, and serum interleukin-7 (IL-7) levels after addition of high- dose IVIG to continuing antiretroviral treatment Panel A shows the five subjects with an achieved ... amplification of each patient's cell culture supernatant and plasma samples were carried out separately Single genome sequencing (SGS) cDNA synthesis was performed using the ThermoScript RT-PCR...
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