Dr. Nabil Maalej

WORK EXPERIENCE

Associate Professor, Medical Physics, King Fahd University of Petroleum and Minerals, 2001-present

• Leading role in starting the new Medical Physics Master’s Program

• Design and development of new Medical Physics Courses and labs in Diagnostic Imaging and Radiation Therapy

• Involved in research for the Saudi Electric Company, EM exposure of the human body

• Primary Investigator in research project Mammography Imaging Optimization.

• Consulting role in LabView programming and computer interfacing

Visiting Professor, National University of Singapore, (summer of 2007)

• Research collaboration with bio-nanotechnology group.

• Develop new polymer nano-particles for cancer cell imaging.

Consultant, Design and Development, Arthur D. Little Inc., 1998-2001.

• Responsible for the design and development of new electronics and medical devices.

• Participated in the design and development of new surgical navigation device using the magnetic flux technology.

• Designed the software and the computer interface for a new electro-optical test device.

• Did the costing, testing and contributed to the design of a new miniature electronics promotional device.

• Responsible for CAD for electronic circuits including schematics, simulation and PCB layout.

Research Associate, Cardiovascular Research Lab, Univ. of Wisconsin-Madison, 1994-1998.

 • Responsible for grant writing, lab management, recruitment, and training of new personnel.

• Responsible for instrumentation, computer interfacing, data acquisition processing and analysis

• Designed new in vivo animal studies, human clinical studies, and performed animal surgery.

• Studied the effect antithrombotic coating of stents, grafts, and catheters.

Teaching Assistant, Medical Physics Department, Univ. of Wisconsin-Madison, 1995-1998.

• Responsible for some lectures in diagnostic imaging for graduate medical physics students.

Research Assistant, Cardiovascular Research Lab, Univ. of Wisconsin-Madison, 1990-1994. 

• Responsible for new experimental design, instrumentation, computer interfacing, data acquisition processing and analysis.

• Conceived new methods that integrated electromagnetic and ultrasound flow measurement techniques, X ray imaging, Gamma ray detection, and flow modeling methods to study the effect of blood hemodynamics on platelet kinetics and thrombosis inside stenosed arteries.

• Designed Doppler ultrasound probes to measure blood flow inside arterial stenosis. 

Research Assistant, Biomedical Engineering Labs, University of Wisconsin-Madison, 1987-1989.

• Developed a computerized calibration station for pressure sensors.

• Designed, constructed, and tested optical, resistive, and capacitate pressure sensors.

• Conceived, constructed, and tested pressure sensing shoe insoles and their electronics. 

• Team-built and tested a portable microprocessor device that measures the pressure distribution in the shoe insoles, during gait.

Project assistant, Pulmonary Lab, Strong Hospital, University of Rochester, summer of 1985.

• Designed electronics and software to interface a four-channel recorder to an IBM PC. 

• Developed signal processing program to detect and model the apnea respiratory response.

EDUCATION

Ph.D., Medical Physics, University of Wisconsin-Madison, 1994.

• Thesis: Effect of Blood Shear Forces on Platelet Mediated thrombosis inside arterial stenosis.

MS, Medical Physics, University of Wisconsin-Madison, 1990.

• Courses and Labs: diagnostic imaging, physics of diagnostic radiology, radiotherapy, nuclear medicine, ultrasound, body physics, health physics, dosimetry, and instrument design.

• Quality Assurance and Calibration: Diagnostic X-ray, CT Scanners, Magnetic Resonance Imaging, Digital Subtraction Angiography, radiotherapy, and Ultrasound equipment.

 MS, Electrical and Computer engineering, University of Wisconsin-Madison, 1987.

• Focus on biomedical instrumentation. 

• Projects: a 12-lead electrocardiogram amplifier, a voice activated audio-tactile channel. 

• Thesis: "A new electro-optical force sensor".  Published in the IEEE Trans of Biomedical Engineering, 1988.

BS, Electrical and Computer Engineering, University of Rochester, Rochester, NY, 1985.

 • Courses and Labs: digital and analog electronics, semi-conductor electronics, electromagnetism, control systems, and communication

• Focus on digital hardware and software design. 

• Projects: an interpreter for PSL language, a software host machine, a micro-programmable microprocessor, a multi-channel analog interface for an IBM PC.

Baccalaureate, Math and Technology, Lycee technique de Nabeul, Tunisia, 1981.

• Focus on math, physics, chemistry, mechanical design and drawing, machine shop.

• Awarded a scholarship for engineering studies in the United States.

COMPUTER EXPERIENCE

• Operating Systems: DOS, WINDOWS, UNIX, and MAC.

 • Instructional Technology: WebCT

• Programming Languages: MATLAB, LabView, C, Pascal, Assembly, and machine code. 

• CAD: Protel (electronics schematics, simulation and PCB layout), Empire (finite difference time domain electromagnetic simulation), Fluent (finite difference fluid flow simulation).

• Software:  ImageJ, MS office (Word, Excel, PowerPoint, Front Page, etc...), Adobe Illustrator, Adobe Photoshop, etc..

HONORS AND AFFILIATIONS

• Patent Award, US patent#  US2010290595KFUPM, 2011.

• Best teacher and Advisor in The college of Science Award, KFUPM, 2005.

• 1994 SATURN award for achievement and teamwork at the Univ. of Wisconsin.

  • Graduated with honors in the BS and MS in electrical and computer engineering.

• Member of the Institute of Electrical and Electronics Engineering (IEEE) society.

• Member in the American Association of Physicist in Medicine (AAPM).

• Listed in the USA national dean's list of 1983.

JOURNAL PUBLICATIONS

1.       Maalej N, Webster JG. A miniature Electro-optical force transducer. IEEE Trans Biomed Eng., BME-35: 93-98, 1988.

2.       Zhu H, Maalej N, Webster JG, Tompkins WJ, Bach-y-Rita P, Wertsch JJ. An umbilical data acquisition system for measuring pressure between the foot and the shoe. IEEE Trans Biomed Eng. 37:908-911, 1990.

3.       Maalej N, Folts JD.  Velocity profile inside a dog coronary stenosis. FASEB, 5: A3873, 1991.

4.       Maalej N, Folts JD. Shear stress and thrombosis inside a dog coronary artery stenosis. FASEB6, 4:A271, 1992.

5.       Maalej N, Folts JD. In-111 labeled platelets accumulate in vivo in stenosed dog arteries at an inverse rate as flow declines in the Folts cyclical flow reduction model. Circ, 88 (4):A2467, 1993.

6.       Maalej N, Folts JD.  Shear stress reverses the antithrombotic effect of aspirin in stenosed arteries.  FASEB J 7(3):A208, 1993.

7.       Maalej N, Albrecht R, Folts JD. The Potent inhibitory effect of a novel nitrosated albumin coating on platelet spreading, attachment and thrombosis on a collagen coated surface. Circ 89(4): A 1283, 1994.

8.       Maalej N, Folts JD.  Aspirin treatment does not protect against acute platelet mediated thrombosis in a stenosed coronary artery under high shear forces. Circulation 90(4), Part 2: I-239, 1994.

9.       Folts JD, Maalej N, Keany JF, Loscalzo J. Coating Palmaz-Schatz stents with a unique NO donor renders them much less thrombogenic when placed in pig carotid arteries. Circulation 92(8):I-670, 1995.

10.    Maalej N, Folts JD. The effect of trans-stenotic pressure gradient on acute platelet mediated thrombus formation. J Investigative Medicine 43:476A, 1995.

11.    Maalej N, Folts JD.  Increased shear stress overcomes the antithrombotic effect of aspirin in a dog coronary artery stenosis. Circulation, 93:1201-1205, 1996.

12.    Maalej N, Folts J.D. Why aspirin cannot prevent arterial thrombosis - Reply. Circulation, 94(11), pp. 3003, 1996.

13.    Maalej N, Folts JD.  Effect of shear stress on acute thrombus formation in stenosed dog carotid arteries.  The FASEB Journal 10(3): A563, #3245, 1996.

14.    Folts JD, Maalej N, Keany JF, Loscalzo J. Palmaz-Schatz stents coated with a NO donor reduces reocclusion when placed in pig carotid arteries for 28 days.  JACC 27(2) (Suppl. A):A68, 1996.

15.    Osman HE, Maalej N, Folts JD.  Gastric administration of a commercial flavonoid inhibits in vivo and ex vivo platelet aggregation in dogs with stenosed coronary arteries. The FASEB Journal 11(3):1820, 1997.

16.    Maalej N, Holden JE, Folts JD.  Stenosis hemodynamics and its effect on platelet accumulation inside stenosed dog carotid arteries. The FASEB Journal 11(3):1819, 1997.

17.    Folts, J.D., Begolli, B., Shanmuganayagam, D., Osman, H., Maalej N. Inhibition of platelet activity with red wine and grape products. BioFactors, 6(4), pp. 411-414, 1997.

18.    Folts JD, Maalej N, Osman H.  Grape juice but not orange or grapefruit juice significantly inhibits in vivo platelet activity and thrombosis in stenosed canine coronary arteries. JACC 29(2):7345, 1997.

19.    Maalej N., Demrow H.S., Slane P.R., Folts J.D. Antithrombotic effect of flavonoids in red wine. Wine. Amer Chemical So, pp. 247-260, 1997.

20.    Maalej N., Demrow H.S., Slane P.R., Folts, J.D. Antithrombotic Effect of Flavonoids in Red Wine. ACS Symposium Series, 661, pp. 247-260, 1997.

21.    Maalej N., Holden J.E. , Folts J.D. Effect of Shear Stress on Acute Platelet Thrombus Formation in Canine Stenosed Carotid Arteries: An In Vivo Quantitative Study. Journal of Thrombosis and Thrombolysis, 5(3), pp. 231-238, 1998.

22.    Osman HE, Maalej N, Shanmuganayagam D. Grape juice but not orange or grapefruit juice inhibits platelet activity in dogs and monkeys. J Nutr. 128(12):2307-12, 1998.

23.    Keevil J.G., Osman H., Maalej N., Folts, J.D. Grape juice inhibits human ex vivo platelet aggregation while orange and grapefruit juices do not. J Amer. Col. Cardiology, 31(2), pp. 172A, 1998.

24.    Wedding KL, Grist TM, Folts JD, Maalej N. Coronary flow and flow reserve in canines using MR phase difference and complex difference processing. Magn. Reson. Med. 1998, 40(5):656-65, 1998.

25.    Wedding K.L., Grist T.M., Folts J.D., Maalej N., Vigen K.K., Peters D.C., Osman H., Mistretta C.A. Coronary artery flow measurement with magnetic resonance imaging: a validation with ultrasound. Journal of the American College of Cardiology, 31(2), pp. 381, 1998.

26.    Maalej N, Holden JE, Folts JD.  In vivo dynamic monitoring of radiolabeled platelet accumulation in stenosed dog arteries during acute thrombus formation. Journal of Thrombosis and Thrombolysis, 5(3):231-239, 1998.

27.    Maalej N, Albrecht R, Loscalzo J, Folts JD. The Potent inhibitory effect of a novel nitrosated albumin coating on platelet spreading, attachment and thrombosis on a collagen coated surface. J Am Coll. Cardio 33(5):408-14, 1999.

28.    Maalej N, Osman H, Shanmuganayagam D., Shebuski R.D., Folts J.D.  Antithrombotic Properties of the Thromboxane A2/Endoperoxide Receptor Antagonist, S18886, on Prevention of Platelet-Dependent Cyclic Flow Reductions.  J Cardiovasc Pharmacol.  Volume 45(5): 389-395, 2005.

29.    Maalej N.  Simple Procedures for Image Quality Assurance and Dose Reduction in Mammography.  International. J. Scientific Research (16):63-67, 2006.

30.    Maalej N, Ghandoor H. El, Al-Tammimi D, Nasser I.  Laser Interference Measurement of Glucose in Liquids.  International Journal of Pure and Applied Physics, Volume 2(1):68-74, 2006.

31.    Al Kafi M., Maalej N., Naqvi A. A. Optimization of Mammography Linear Grid Geometry.  Medical Physics Journal, 33(6): 1989-1990, 2006.

32.    Al-Ghamdi H., Maalej N. Surface Dose Measurement in 6 MeV X-ray Beam Using Radiographic Film and TLD. Medical Physics Journal, 33(6): 2138, 2006.

33.    Al Kafi A, Maalej N, Naqvi N. The use of MCNP Code for Radiation Transport and Dosimetry Calculations in Training Medical Physics Students.  J. Scientific Research. Volume (16):195-200, 2006.

34.    Elshahat BA, Naqvi A., Maalej N.  Design calculations of an accelerator based BSA for BNCT of brain cancer.  Journal of Radio analytical and Nuclear Chemistry 274(3):539-544, 2007.

35.    Maalej N, Asuni G, Al-Dhukair, Naqvi A. Measurement of the 2-D modulation transfer function for screen-film magnification mammography.  Medical Physics Journal, 34(6):2354-2354, 2007.

36.    Al-Ghamdi H., Fazal-ur-Rehman, Al-Jarallah M.I., Maalej N. Photoneutron intensity variation with field size around radiotherapy linear accelerator 18-MeV X-ray beam.  Radiation Measurements 43 (2008) S495–S499, 2008.

37.    Ben-Mansour R; Badr HM; Shaik AQ, Maalej N. Modeling Of Pulsatile Blood Flow In An Axisymmetric Tube With A Moving Indentation . Arabian Journal Science Engineering   Volume: 33   Issue: 2B   Pages: 529-550, 2008.

38.    Al Kafi M.A., Maalej N., Naqvi A.A. Scatter dose calculation for anti-scatter linear grids in mammography. Applied Radiation and Isotopes 67 pp. 1837-1841, 2009.

39.    Maalej N, Belhadj C A, Abdel-Galil, T K, Habiballah I O. Visible Human Utilization to Render Induced Electric Field and Current Density Images inside the Human. IEEE Proceedings, 97(12):2053 – 2059, 2009.

40.    Abdalla K, Naqvi A.A., Maalej N, Elshahat B.  Dose calculation from a D-D reaction based BSA for Boron neutron capture synovectomy. Applied Radiation and Isotopes, 68 pp. 751-754, 2010.

41.    Tabet N, Faiz, M, Maalej N. Theme Issue On Science and Engineering at the Nanoscale Preface. Arabian Journal for Science And Engineering.   Volume: 35   Issue: 1C   Pages: III-IV Published: 2010.

42.    Maalej N., Belhadj C.A.  External and internal electromagnetic exposures of workers near high voltage power lines. Progress In Electromagnetics Research C, 19, pp. 191-205.2011.

43.    Belhadj C.A., Maalej N.M.   Current Density Estimation and Visualization for Exposed Live Transmission Line Workers   PIERS Proceedings, Aug. 2013, pages: 961-968, 2013.

44.    Elleuch R., Salhi R., Maalej N., Deschanvres J.-L., Maalej R.  Structural and luminescence correlation of annealed Er-ZnO/Si thin films deposited by AACVD process.  Materials Science and Engineering 178(17):1124–1129, 2013.

45.    Alashrah S., Kandaiya S., Maalej N., El-Taher A. Skin Dose Measurements Using Radiochromic Films, TLDs And Ionization Chamber And Comparison With Monte Carlo Simulation. Radiation Protection Dosimetry 162(3): 338-344, 2013.

46.    Hendi Abdulmajeed H. Y.  Al Quraishi S I. Maalej N.  Gas flow-controlled microwave combustion synthesis of bismuth oxide nanoparticles. J. Of Nanoparticle Research 16(5): 11051-014-2374-6, 2014.

47.    Al Sharif Sharif M S, Deriche M., Maalej N., El Ferik, S. A Fast Geodesic Active Contour Model for Medical Image Segmentation Using Prior Analysis and Wavelets. Arabian Journal for Science and Engineering, 39(2), pp. 1017-1037. 2014.

48.    El-Batta A, Al-Muallem HA., Shaikh, M. N., Maalej N. Polymer Nanoparticles Containing 2,4,6-triiodophenol: A Potential Contrast Medium for Medical Imaging.  Acta Chimica Slovenica 61(2):414- 419, 2014.

49.       Maalej N, Qurashi A, Assadi A A, Maalej R, Shaikh MN, Ilyas M and Gondal M. Synthesis of Gd₂O₃:Eu nanoplatelets for MRI and fluorescence imaging. Nanoscale Research Letters 10:215, 2015.

50.       Elshahat B, Naqvi A A, Maalej N. Boron neutron capture therapy design calculation of a 3H(p,n) reaction based BSA for brain cancer setup. International Journal of Cancer Therapy and Oncology setup. Int J Cancer Ther Oncol 3(3):3310, 2015.

51.       Osman A; Maalej N; Jayesh K, Abdel-Rahman W. MLCs Performance and Patient-Specific IMRT QA Using Log File Analysis. Medical Physics, Volume 43, Issue 6, 2016.

52.       Osman A, Maalej N, Khateeb Ul-Rahmana, Abdel Rahman W, Heterogeneity and scatter effects on Ir-192 brachytherapy dose distribution, Physica Medica 32(10), 1210–1215, 2016.

THESIS PUBLICATION

Maalej N. Effect of blood shear forces on platelet mediated thrombosis inside arterial stenosis, ProQuest, UMI Dissertations Publishing, 1994. ISBN:T18, Medical Physics Publishing, Madisom, Wisconsin.

BOOKS

Sharif Al-Sharif , Mohammed Deriche, Nabil Maalej. Medical Images Segmentation Using WGAC Technique: A Fast Geodesic Active Contour Model Using Prior Analysis and Wavelets, ISBN-10: 3639265475. Publisher; VDM Verlag, 2010.

CONFERENCE PROCEEDINGS

1.      

1.       1.    Maalej N, Zhu H, Webster JG, Tompkins WJ. Pressure monitoring under insensate feet. Proc IEEE Conf Eng Med Biol Soc: 1823-1824, 1987.

2.       2.      Maalej, N., Webster, J.G., Tompkins, W.J. Electrooptical Transducer For Force Measurement Under Insensate Feet, Proc. 9th Annual Conf. IEEE Eng. Med. Biol. Soc., pp.1823-1824, 1987.

3.       Maalej N, Bhat S, Zhu H, Webster JG, Tompkins WJ. A conductive polymer pressure sensor. Proc IEEE Ann. Conf Eng Med Biol Soc:770-771, 1988.

4.       Zhu H, Maalej N, Webster JG, Tompkins WJ, Wertsch JJ. A microprocessor-based data acquisition system for measuring pressures between the foot and the shoe. IEEE Ann Conf Eng Med Biol Soc:1599-600, 1988.

5.       Maalej N, Webster JG, Tompkins WJ, Bach-y-Rita P. A conductive polymer sensor array. Proc IEEE Ann Conf Eng Med Boil Soc: 1116-7, 1989.

6.       Maalej N, Folts JD.  Velocity profile and shear stress inside a dog coronary stenosis. Proc XIV Inter Am Cong Card: A56, 1992.

7.       Maalej N, Folts JD. Aspirin treatment does not protect against acute platelet thrombosis in high shear coronary artery stenosis: quantitative assessment. Thromb Haem: A156, 1993.

8.       Maalej N, Folts JD. High shear forces in critically stenosed dog coronary arteries cause thrombus formation in spite of aspirin treatment.  Am Fed Clin Res 42:A361, 1994.

9.       Folts J.D., Slane, P., Maalej N. French Red Wine But Not White Wine Inhibits Human Platelet-Aggregation and Prolongs Bleeding-Time. Abstracts of Papers of the American Chemical Society, 210, pp. 63-AGFD, 1995.

10.    Folts J, Maalej N, Keany J Jr, Loscalzo J.  Coating Palmaz-Schatz stents with an NO donor reduces intimal hyperplasia in stented pig carotid arteries.  Presented at the 14th International Congress on Thrombosis, Montpellier, France, October 14-19, 1996.

11.    Folts J D, Maalej N, Osman H, Reed J.  Grape juice but not orange juice inhibits in vivo platelet activity and thrombosis in stenosed canine coronary arteries.  Presented at the 14th International Congress on Thrombosis, Montpellier, France, October 14-19, 1996.

12.    Keevil J, Maalej N, Osman H.  Daily feeding of grape juice but not orange or grapefruit juice inhibits ex vivo platelet activity in human volunteers. Presented at the 4^th International Symposium on Multiple Risk Factors in Coronary Disease, Washington, DC, April 23-25, 1997.

13.    Kruse-Elliott KT, Folts JD, Maalej N, Grossman JE. Effect of Nitrosated-albumin (NO-BSA) on the cardiopulmonary response to endotoxemia. Presented at the American Lung Association/American Thoracic Society Conference, May 17-21, 1997.

14.    Hanson M, Maalej N, Folts JD.  Intragastric tea but not coffee inhibits thrombus formation in stenosed coronary arteries of dogs.  Presented at the 6^th Midwest Platelet Conference, October 4-5, 1996.

15.    Wedding KL, Grist TM, Folts JD, Maalej N, Vigen KK, Peters DC, Goodwyn ED, Osman H, Mistretta CA. In vivo validation of MR flow measurements and motion correction algorithms in the coronary arteries.  Presented at the International Society for Magnetic Resonance in Medicine, Vancouver, Canada, Vol. 2, pp. 866, April 12-18, 1997.

16.    Maalej N.  Quality Control Procedures for Improving Diagnostic Imaging and Reducing Radiation Exposure to Patients.  Second Saudi Science Conference, March 2004, Jeddah, Saudi Arabia.

17.    Maalej N, H. El Ghandoor H., Al-Tammimi D, Nasser I.  Laser Interference Measurement of Glucose in Liquids.  Second Saudi Science Conference, March 2004, Jeddah, Saudi Arabia.

18.    El Ghandoor H, Maalej N, Dallal Al-Tammimi D, I. Nasser I. Laser Interference Glucometry.   Second Middle East Nondestructive Testing Conference, December, 2003, Jubail Industrial City, Saudi Arabia.

19.    Ruhul Amin, Maalej N. Extracting Tumor Contrast, Differential Signal to Noise Ratio and the Receiver Operator Characteristic Curve Using MATLAB.  First UAE Int. Conf. on Biological and Medical Physics March 27-30, 2005.

20.    Al-Kafi A, Maalej N., Naqvi A A.  The use of MCNP code for Radiation Transport and Dosimetry Calculations in Training Medical Physics Students.  First UAE Int. Conf. on Biological and Medical Physics March 27-30, 2005.

21.    Al-Kafi A, Maalej N, Naqvi A A. Medical physics students' training using MCNP code, Proceedings of Monte Carlo 2005 Topical Meeting, Oak Ridge National Laboratory, Tennessee , USA (2005) pp. 869-880.

22.    Al-Kafi A, Maalej N, Naqvi A A, Nobah A.   Monte Carlo Simulation Studies of Scatter to Primary Ratio for Mammographic Imaging.   The second meeting of the Saudi Physical Society. Nov 2005.

23.    Nobah A, N Maalej N, Naqvi AA, Al Kafi A.   The Effect of Air-Gap on Scatter to Primary Ratio in Mammography Using Monte Carlo Simulation. The second meeting of the Saudi Physical Society. Nov. 2005.

24.    Elshahat B, Naqvi A, Maalej N. Intensity Optimization of Thermal Neutrons Beams for an Accelerator-Based BNCT Setup. The second meeting of the Saudi Physical Society. Nov. 2005.

25.    Elshahat B. A.,  Naqvi A. A., Maalej N.  Intensity Optimization of Thermal Neutrons Beams for an Accelerator-Based BNCT Setup. The second meeting of the Saudi Physical Society. Nov. 2005.

26.    Abdalla K, Naqvi A. A, Maalej N. Search of a Radioisotope Neutron Source for its Application in BNCT Therapy. The second meeting of the Saudi Physical Society. Nov. 2005.

27.    Elshahat A.  , Naqvi A.  A., Maalej N., Abdalla K. Neutron Dose Calculation for an Accelerator-Based BNCT Setup.  Radiochemical Conference, 2006 Czech Republic.

28.    Maalej N, Al Kafi M A, Nobah A., Naqvi A A.  Air Gap Effect on Mammography Image Quality. World Congress on Medical Physics and Biomedical Engineering 2006. Springer Berlin Heidelberg, pp. 1353-1356, 2006.

29.    Al-Dhukair A, Maalej N. Comparison of Five Different Methods for Obtaining the Modulation Transfer Function of a Diagnostic X-ray Machine. Word Congress of Medical Physics and Biomedical Eng., Sept 2006, Seoul, Korea.

30.    Maalej N., Abdel-Galil T. K., Abdul-Majeed M. A, Habiballah I. O. Organ Dosimetry for a Worker Standing Under a 132 kV Power Line.  Word Congress of Medical Physics and Biomedical Eng., Sept 2006, Seoul, Korea.

31.    Al-Ghamdi H, Fazal-ur-Rehman, Al-Jarallah M. I., Maalej N.  Photoneutron intensity variation with filed size around radiotherapy linear accelerator 18-MeV X-ray beam.  23^rd International Conference on Nuclear Tracks in Solids (23 ICNTS), Sep 2006. Beijing, China.

32.    Abdalla K, Naqvi A. A., Maalej N., El-Shahat B. Thermal Neutron Dose Calculation in Synovium Membrane for BNCS. Proceedings 12th Int. Con. on Neutron Capture Therapy, Oct 2006, Takamatsu, Kagawa, Japan, 385-388.

33.    Elshahat B. A., Naqvi A. A., Maalej N. , Abdallah K.  Thermal Neutron Dose Calculations in a Brain Phantom from 7Li(p,n) Reaction Based BNCT Setup. Proceedings 12th International Conference on Neutron Capture Therapy, Oct 2006, Takamatsu, Kagawa, Japan, 381-384.

34.    Maalej N. X-ray Scatter and Image Quality in Magnification Mammography. The Third Meeting for the Saudi Physical Society, Riyadh, Dec.2006.

35.    Naqvi A. A., Maalej N., El-Shehada B., Abdallah K. Neutron Capture Therapy Studies at KFUPM. Paper presented in Third Saudi Physical Society Meeting held at Riyadh on December 18-19, 2006 at King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia.

36.    Maalej N, Belhaj A C. Abdel-Gali1 T. K, Habiballah I O, Al-Soufi K. Electromagnetic Occupational Exposure under a 132 kV Power Line.  The Third Saudi Science Conference, Riyadh, March 2007.

37.    Abdalla K, Naqvi AA, Maalej N, EI-Shehat B.  Dose Calculation from an Accelerator-based Neutron Source in a Knee Phantom for BNCS Application. The Third Saudi Science Conference, Riyadh, March 2007.

38.    Al Kafi M. A., Maalej N., Naqvi A. A.  Performance of Anti-scatter Grids in Mammography Imaging.  The Third Saudi Science Conference, Riyadh, March 2007.

39.    Maalej N, Al-Karmi A, Al-Jarallah I. The KFUPM Experience in Teaching and Training Medical Physicists in Collaboration with Local and National Hospitals in the Kingdom. 2^nd Int. Saudi Symp. On Med. Phys. May 2007.

40.    Asuni Ganiyu A., Maalej N, Moftah B.  IMRT Patient Dose Verification Using Radiochromic Film, 2–D Array, and Electronic Portal Imaging Device (EPID). 2^nd International Saudi Symposium on Medical Physics, May 2007.

41.    Al-Ashrah S, Maalej N, Rahmatalla E D, Al-Gamdi H, Moftah B. Radiochromic Film Measurement and Monte Carlo Calculation of Surface Dose from 6 MV Beam.. 2^nd Int. Saudi Symposium on Medical Physics May 2007.

42.    Shehadeh M Z, Elsobky M H, Nabil Maalej N.  Monte Carlo Technique for Simulating Total Skin Electron Therapy.  2^nd International Saudi Symposium on Medical Physics May 2007.

43.    Al-Hakeem E, Myola U, Maalej N.  Simulation and Verification of Stereotactic Radiosurgery Beam.  2^nd International Saudi Symposium on Medical Physics May 2007.

44.    Maalej N, Al-Karmi A.  Establishing the First Master’s Program in Medical Physics in Saudi Arabia and the Gulf Region.  International Conference on Physics Education.  Marrakech, Morocco, Nov. 2007.

45.    Fazal-ur-Rehman, Al-Ghamdi H., Al-Jarallah M. I., Maalej N. Photoneutron Distributions around 18 MV X-ray Radiotherapy Accelerator using Nuclear Track Detectors. 24^th International Conference on Nuclear Tracks in Solids Bologna, 1-5 September 2008.

46.    Al-Ghamdi H., Fazal-Ur-Rehman, Al-Jarallah M.I., Maalej N. Photoneutron Intensity Variation with Field Size Around Radiotherapy Linear. Medical Physics, 35(6), pp. 2657, 2008.

47.    Shehadeh M Z, Maalej N.  Dosimetry comparison between experimental, Monte Carlo and PLANUNC treatment planning system.  3^nd International Saudi Conference on Medical Physics Feb 2008.

48.    Alsubki M, Maalej N.  Simulation of photon beam interaction with the ZUBAL head phantom.  3^nd International Saudi Conference on Medical Physics, Feb. 2008.

49.    Belhadj C. A. , Dawoud M. M., Maalej N., Habiballah I.O., Abdel-Galil T. K. Electric & Magnetic Field Assessment For Live-Line Workers Next To A 132 KV Transmission Line Conductor . 2008 Transmission and Distribution Conf. Latin America, Bogota, Colombia, August 13-15, 2008, IEEE PES Page 1-6, 978-1, 2008

50.    Maalej N, Shehadeh M, Al-Sobky M, Naqvi A A.    Linear Accelerator Photon Beam Interaction with the Humanoid Phantoms.  IEEE Nuclear Science Symp. and Medical Imaging Conf., Oct. 19-25, 2008 at Dresden, Germany 2008.

51.    Maalej N, Mwidu U M, Jalal B, Naqvi AA. Linear Accelerator Photon Beam Interaction with the Virtual Physiological Human,  World Congress of Medical Physics and Biomedical Engineering, Munich, Germany, 6-12 Sep., IFMBE Proceedings, 25 (1), pp. 717-720, 2009.

52.    Maalej N, Mwidu U M, Naqvi A, Deriche M. Using the Visual Human to Study the Interaction of Linear Accelerator Photon Beam with Body Tissues. The Forth Saudi Science Conference, Madinah, March 2010.

53.    Adulkhaleq F, Maalej N. Design and Testing of a Flattening Filter for a Radiography Machine. IEEE Nuclear Science Symposium and Medical Imaging conference, Knoxville, USA, Nov 2010.

54.    Al Sharif S.M.S.; Deriche M.; Maalej N. A fast geodesic active contour model for medical images segmentation using prior analysis.  2nd International Conference on Image Processing Theory, Tools and Applications (IPTA), pp. 300-305, 2010.

55.    Sultan R, Maalej N. Accuracy of Dose Distributions in Virtual Physiological Humanoid: Comparison between Monte Carlo simulation and Analytical Anisotropic Algorithms.  The 2^nd Saudi Students Conference, Jeddah, 2011.

56.    UlHassan, M.S, AlDahwai I., Maalej N., Abdelrahaman W.  Commissioning of a Total Skin Electron Therapy (TSET) Technique, International Conference on Radiation Medicine (ICRM2012) Clinical Applications and Innovative Approaches, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia 27 Feb. 2012.

57.    Abdullah L A,  Jalal B, Maalej N , Abdel-Rahman W. Commissioning a Monte Carlo Based Treatment Planning System at King Fahad Specialist Hospital Dammam. International Conference on Radiation Medicine (ICRM2012) Clinical Applications and Innovative Approaches, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia, 27 Feb. 2012.

58.    Maalej N. Mammography Imaging optimization. International Conference on Radiation Medicine (ICRM2012) Clinical Applications and Innovative Approaches, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia 27 February, 2012.

59.    Maalej N, Al-Karmi A, J Al-Sadah J, Abdel-Rahman W. Building and Strengthening the First Master's Program in Medical Physics in The Gulf Region. Med Phys 39, 3624, 2012.

60.    Maalej N. Nanoparticles for Cancer Cell Imaging and Killing.  Int. Conf. for Eng, Sci. for Biology and Medicine, Mahdia, Tunisia, Nov 29-Dec 1 , 2013.

61.    Maalej N, Quraishi Ahsan Ul-Haq, Gondal Mohammad A., Shaikh Nasiruzzaman, Al-Quraishi Saleh, Maalej Ramzi. Synthesis and Characterization of Gd₂O₃ and Gd₂O₃:Eu Nanoparticles and Potential for MRI and Fluoresce Imaging. Symposium on Nano-Magnetics, Bahrain, 2013.

62.    UlHassan, M.S.Z., Aldahlawi, I., Maalej N., Abdel-Rahman, W. Commissioning of a Total Skin Electron Therapy (TSET) technique. IFMBE Proceedings 39 IFMBE, pp. 1899-1902, 2013.

63.    Al Asmary M, Maalej N, W. Abdel Rahman.  Characterization of EBT3 Gafchromic Film as  a radiation dosimeter for photon and electron beams.  International Conference on Radiation medicine.  Riyadh, Saudi Arabia, 16-20 Feb, 2014.

64.    Ayaz A, Maalej N. Monte Carlo Modeling of a mammography machine.  International Conference on Radiation Medicine.  Riyadh, Saudi Arabia, 16-20 Feb, 2014.

65.    Ayaz A, Maalej N. Monte Carlo Modeling of Medical Linear Accelerator (18 MeV Electron  Beam).  International Conference on Radiation Medicine.  Riyadh, Saudi Arabia, 16-20 Feb, 2014.

66.    Maalej N., Rahman W. Abdel, Shahrure B., Alamodi F., Dawabsheh A. Monte Carlo Simulations in Teaching and Training Medical Physics Students. International Conference on Radiation Medicine.  Riyadh, Saudi Arabia, 16-20 Feb., 2014.

67.    Mohammed A Alasmary M A, Maalej N, Abdel Rahman W. Characterization of Gafchromic EBT3 Film as a Radiation Dosimeter for Photon and Electron Beams. International Conference on Radiation Medicine.  Riyadh, Saudi Arabia, 16-20 Feb., 2014.

68.    Maalej N, Qurashi H, Maalej R, Assadi A, Gondal M. Rare Earth Gadolinium Based Nanoparticles for Fluorescent Imaging. International Conference of Engineering Sciences for Biology and Medicine.  Monastir, Tunisia, May1-3 2015.

69.    Maalej N. The Role of a Medical Physicist in Mammography Image Optimization. International Conference of Engineering Sciences for Biology and Medicine.  Monastir, Tunisia, May1-3 2015.

71.       Ibrahim A, Maalej N, Jayesh K., Abdel-Rahman W. Patient-specific IMRT verification using dynamic MLCs log file analysis.  International Conference on Radiation Medicine.  Riyadh, Saudi Arabia, 21-25 Feb., 2016.

72.       Ibrahim A, Maalej N, Khateeb Ur-Rehman, Abdel-Rahman W. Scatter and inhomogeneity effects on Ir-192 brachytherapy source dose distribution.  International Conference on Radiation Medicine.  Riyadh, Saudi Arabia, 21-25 Feb., 2016.