Výsledky vyhledávání - "Arshed Waheed"

Akademický článek

Geant4-based comprehensive study of the absorbed fraction for electrons and gamma-photons using various geometrical models and biological tissues

Autor: Rahman Ziaur, Rehman Shakeel Ur., Mirza Sikander M., Arshed Waheed, Mirza Nasir M.

Publikováno v: Nuclear Technology and Radiation Protection, Vol 28, Iss 4, Pp 341-351 (2013)

The Geant4-based comprehensive model has been developed to predict absorbed fraction values for both electrons and gamma photons in spherical, ellipsoidal, and cylindrical geometries. Simulations have been carried out for water, ICRP soft-, brain-

Externí odkaz: https://doaj.org/article/9f5dfb42295046e58e094ccd92b5bffb

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Akademický článek

Assessment of scattered dose contribution to healthy tissue in radiation therapy using water phantom

Autor: Arshed Waheed, Qazi Ikramullah, Ullah Asad, Mahmood Khalid, Hussain Iftikhar, Zia-Ur-Rehman, Akhter Perveen, Akhtar Muhammad

Publikováno v: Nuclear Technology and Radiation Protection, Vol 25, Iss 3, Pp 212-216 (2010)

In cancer therapy using gamma radiation one of the limiting factors in dose delivery is the safety of the healthy tissues and organs around the cancerous mass. Better collimation and dose fractionation are employed to achieve this. In the present pap

Externí odkaz: https://doaj.org/article/97e18817e0304b8598842e585afa7db4

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Akademický článek

A comparison of in-air and in-water calibration of a dosimetry system used for radiation dose assessment in cancer therapy

Autor: Arshed Waheed, Mahmood Khalid, Qazi Ikramullah, Ullah Asad, Akhter Perveen, Ahmad Salman Syed, Jamil Zeeshan

Publikováno v: Nuclear Technology and Radiation Protection, Vol 25, Iss 1, Pp 51-54 (2010)

An accurate calibration of the therapy level radiation dosimetry system has a pivotal role in the accuracy of dose delivery to cancer patients. The two methods used for obtaining a tissue equivalent calibration of the system: air kerma calibration an

Externí odkaz: https://doaj.org/article/2c7c6dc61e934b8196128a5c738f16bc

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Akademický článek

Assessment of environmental gamma dose in northern Rechna Doab in Pakistan

Autor: Jabbar Abdul, Bhatti Arshad S., Ahmad Syed S., Arshed Waheed, Akhter Perveen

Publikováno v: Nuclear Technology and Radiation Protection, Vol 24, Iss 1, Pp 56-60 (2009)

Environmental gamma radiation levels in northern Rechna Doab, Pakistan, were measured as a part of systematic study aimed at the establishment of the background data base of radiation and radioactivity levels. The measurements reported in this paper

Externí odkaz: https://doaj.org/article/9991c32aa1f545b68f3356a49ce8d956

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