Publications

Export 8457 results:
Sort by: Author Title [ Type  (Desc)] Year
Conference Paper
El-Haddad, M., R. Grau, B. Dobler, H. J. Wertz, U. Tiefenbacher, V. Steil, Y. Abo-Madyan, F. Wenz, and F. R. H. Lohr, "A robust and simple IMRT approach reducing dose to the heart in left sided breast cancer", RADIOTHERAPY AND ONCOLOGY, vol. 81: ELSEVIER IRELAND LTD ELSEVIER HOUSE, BROOKVALE PLAZA, EAST PARK SHANNON, CO, CLARE, 00000, IRELAND, pp. S364–S365, 2006. Abstract

Purpose/Objective: Although 3D-treatment-planning reduced cardiac
dose in postoperative breast radiotherapy, overall cardiac toxicity
increased due to the more widespread use of anthracyclines in the
adjuvant treatment. Modelling of toxicity based on data from patient
series treated for breast cancer and for Hodgkin's disease suggests
that reduction of the maximal dose to the left heart might be
particularly beneficial.We compared treatment plans created with
an aperture based IMRT-approach (an approach that offers some advantages
over fully inverse treatment planning) to three-dimensionally
planned tangent fields with regard to physical and biological
optimisation of the dose distribution, its robustness to positioning
errors and its treatment time requirements.

Materials/Methods: CT- and structure data of 14 patients that had
been treated postoperatively with external beam irradiation for
early breast cancer at our department formed the basis of our plan
comparison study. For each patient data set, a conventional 3D
treatment plan and an IMRT plan were created on ELEKTA Precise-
Plan. Dose Volume Histograms (DVH) were evaluated with regard
to target coverage, dose homogeneity, and dose to organs at risk
(heart, lung, contralateral breast). Normal tissue complication probability
(NTCP) for cardiac mortality as the endpoint was calculated
for both approaches based on a relative seriality model. For a representative
patient, the influence of positioning errors on the DVH was
simulated by moving the isocenter in various directions.

Results: IMRT reduced the maximum dose to the left ventricle from
a mean of 49 Gy to a mean of 34 Gy. Heart volume that was exposed
to <30 Gy was reduced from a mean of 45 ccm3 to a mean of 5.8
ccm3. Mean dose to the heart was increased by an average of 15
%. The change in DVH characteristics translated into a projected reduction
of the probability for therapy associated long term cardiac
death from 6 % (conventional 3D) to 2.5 % (IMRT) with the relative
seriality model. On average, mean dose to the contralateral (right)
breast was increased from 1.15 Gy to 5.4 Gy.Coverage of the ventral
portion of the breast was robust to positioning errors, coverage of
the posterior portion was not as a consequence of steep dose gradients
towards the lung/heart.Monitor units, segment numbers and
treatment time (<15 min) were within acceptable limits

Conclusions: Aperture based IMRT for left sided breast cancer significantly
reduces maximum dose to the left ventricle. This reduction
may translate into reduced cardiac mortality based on an appropriate
NTCP model. The clinical significance of increased exposure to
the right breast is as of now unclear but may be less relevant than
cardiac toxicity. As for any conformal technique, patient positioning
has to be improved in the direction of the steep gradients (e.g. at
the thoracic wall)

Mostafa, K., and A. M. Darwish, "Robust baseline-independent algorithms for segmentation and reconstruction of Arabic handwritten cursive script", Electronic Imaging'99: International Society for Optics and Photonics, pp. 73–83, 1999. Abstract
n/a
Mostafa, K., and A. M. Darwish, "Robust baseline-independent algorithms for segmentation and reconstruction of Arabic handwritten cursive script", Electronic Imaging'99: International Society for Optics and Photonics, pp. 73–83, 1999. Abstract
n/a
Ammar, M., and G. Dumont, "Robust Stability Analysis of Cross-Directional Processes using the U-gap metric", The Proceedings of the 45th IEEE Conference on decision and Control, San Diego, USA., 2006. Abstract
n/a
Ammar, M., and G. Dumont, "A Robust Stability Criterion for misalignment uncertainties in cross-directional processes", The proceedings of the 2008 Control Systems Pan-Pacific Conference, Vancouver, Canada., 2008. Abstract
n/a
Kassem, T. W., A. A. S. Mahmoud, N. R. Barsoum, L. A. S. E. Din, and M. H. Kamel, "The role of Doppler in evaluation of systemic lupus erythematosus nephritis", Journal of Nephrology & Therapeutics, vol. 6, issue 2, New Orleans, USA, 10 May, 2016. sle_nephritis_usa_2016.pdf
Mahmoud, A. A. S., M. S. A. ElFatah, and L. A. S. E. Din, "The role of MRI diffusion weighted images in assessment of benign and malignant hepatic focal lesions in non paediatric age group", ECR 2016, VIENNA, 3 MARCH, 2016.
Hamza, H. S., J. S. Deogun, and K. Wang, "Routing and wavelength assignment with maximum resource sharing in WDM mesh networks with path-based protection", High Performance Switching and Routing, 2005. HPSR. 2005 Workshop on: IEEE, pp. 421–425, 2005. Abstract
n/a
Hamza, H. S., J. S. Deogun, and K. Wang, "Routing and wavelength assignment with maximum resource sharing in WDM mesh networks with path-based protection", High Performance Switching and Routing, 2005. HPSR. 2005 Workshop on: IEEE, pp. 421–425, 2005. Abstract
n/a
Kanj, M., M. Shaheen, M. Bassiouny, A. Hussein, S. Ahmed, O. Wazni, W. Saliba, T. Dresing, D. Martin, M. Bhargava, et al., "SAFETY AND OUTCOME OF EPICARDIAL ABLATION OF VENTRICULAR TACHYCARDIAS", JOURNAL OF CARDIOVASCULAR ELECTROPHYSIOLOGY, vol. 22: WILEY-BLACKWELL COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA, pp. S13–S13, 2011. Abstract
n/a
Darwish, A., A. E. Hassanien, Q. Tan, and N. R. Pal, "Securing patients medical images and authentication system based on public key infrastructure", Soft Computing Models in Industrial and Environmental Applications, 6th International Conference SOCO 2011: Springer Berlin Heidelberg, pp. 27–34, 2011. Abstract
n/a
Darwish, A., A. E. Hassanien, Q. Tan, and N. R. Pal, "Securing patients medical images and authentication system based on public key infrastructure", Soft Computing Models in Industrial and Environmental Applications, 6th International Conference SOCO 2011: Springer Berlin Heidelberg, pp. 27–34, 2011. Abstract
n/a
Elansary, A., and A. E. Damatty, "Seismic Analysis for Composite Conical Tanks", Canadian Conference of Applied Mechanics, CANCAM, At London, Ontario, Canada, London, 2015.
Asaad, M. R., D. S. Darwish, E. A. El-Karamity, and E. M. Taha, "Selection response for improving the performance of Egyptian Cotton under late planting and soil moisture stress.", Biol. Life Sci. Forum MDPI, https://www.mdpi.com/authors/promoting, 30 October 2023.
Saroit, I. A., S. E. Ola, and M. A. Dayem, "Self-Healing ATM networks Based on Virtual Paths", the 33th Annual ISSR Conference, Cairo,Egypt, December , 1998.
Kotyk, T., S. Chakraborty, N. Dey, T. Gaber, A. E. Hassanien, and V. Snasel, "Semi-automated System for Cup to Disc Measurement for Diagnosing Glaucoma Using Classification Paradigm", Proceedings of the Second International Afro-European Conference for Industrial Advancement AECIA 2015: Springer International Publishing, pp. 653–663, 2016. Abstract
n/a
Reda, I., E. E. Khalil, A. ElDegwy, and T. A. M. Dief, "Shape Effectiveness of HVAC Outlets on Automobile Thermal Comfort", , ASHRAE Winter Meeting,Paper AT-2019-C062, Atlanta ,USA, January 2019.
Petit, J., O. Youssef, M. Rjetjens, M. D'Ambrosio, A. Luini, S. Massaron, A. Vanazzi, and G. Martinelli, "Should breast reconstruction be delayed in high-risk breast cancer patients (pts) receiving High-Dose Chemotherapy (HDC)?", BONE MARROW TRANSPLANTATION, vol. 27: NATURE PUBLISHING GROUP HOUNDMILLS, BASINGSTOKE RG21 6XS, HAMPSHIRE, ENGLAND, pp. S119–S119, 2001. Abstract
n/a
Dey, A., S. Dey, Siddhartha Bhattacharyya, V. Snasel, and A. E. Hassanien, "Simulated Annealing Based Quantum Inspired Automatic Clustering Technique", AMLTA 2018: The International Conference on Advanced Machine Learning Technologies and Applications (AMLTA2018) , Cairo, 23 fEB, 2018. Abstract

Cluster analysis is a popular technique whose aim is to segregate a set of data points into groups, called clusters. Simulated Annealing (SA) is a popular meta-heuristic inspired by the annealing process used in metallurgy, useful in solving complex optimization problems. In this paper, the use of the Quantum Computing (QC) and SA is explored to design Quantum Inspired Simulated Annealing technique, which can be applied to compute optimum number of clusters for image clustering. Experimental results over a number of images endorse the effectiveness of the proposed technique pertaining to fitness value, convergence time, accuracy, robustness, and standard error. The paper also reports the computation results of a statistical superiority test, known as t-test. An experimental judgement to the classical technique has also be presented, which eventually demonstrates that the proposed technique outperforms the other.

Yosri, A., S. Dickson-Anderson, and W. El-Dakhakhni, "Simulating Colloid Behavior in Fractures Using a Modified Time Domain Random Walk Approach", Groundwater Week, 4 December, 2019.
Abdelsalam, M., A. Khalil, A. Dolezal, and M. Ammar, "Simulation of Cold and Warm Start-up Processes of the Natural Circulation Boiler", Proceedings of the 8th International Conference for Mechanical Power Eng.(ICMPE8), Alexandria, Apr.1993., pp. 421–442, 1993. Abstract
n/a
Benecha, E., R. Dawood, I. R. Rahmonov, Y. M. Shukrinov, and A. E. Botha, "Simulations of dc SQUIDs with topologically trivial and nontrivial barriers", Few to Many Body Systems: Models, Methods and Applications:4th South Africa - JINR SYMPOSIUM, JINR, Dubna Russia, 24 September, 2015.
Abd El Aziz, A., N. Dakhil, T. Elbaz, H. Shehab, A. Zekri, and A. D. Bisceglie, "Smoking increases the risk of hepatocellular carcinoma in cirrhosis", LIVER INTERNATIONAL, vol. 26: BLACKWELL PUBLISHING 9600 GARSINGTON RD, OXFORD OX4 2DQ, OXON, ENGLAND, pp. 63–63, 2006. Abstract
n/a
Bandler, J. W., Q. S. Cheng, S. A. Dakroury, D. M. Hailu, K. Madsen, A. S. Mohamed, and F. Pedersen, "Space mapping interpolating surrogates for highly optimized EM-based design of microwave devices", Microwave Symposium Digest, 2004 IEEE MTT-S International, vol. 3: IEEE, pp. 1565–1568, 2004. Abstract
n/a