Zobrazeno 1 - 6
of 6
pro vyhledávání: '"James T. Spicka"'
Autor:
Gary A. Ezzell, James T. Spicka, Arnold Herskovic, Tom J. Vitalis, Colin G. Orton, Richard L. Maughan
Publikováno v:
Medical Physics. 14:400-405
We present the advantages of using partial transmission cord blocks throughout treatment, as opposed to adding full‐thickness blocks near the end. Such blocks reduce the risk of block omission or mispositioning and require less total time for const
Publikováno v:
Medical dosimetry : official journal of the American Association of Medical Dosimetrists. 13(1)
Tissue compensators afford one the opportunity of producing idealized dose distributions in radiotherapy. We have developed a technique which may be used to produce fast, accurate and inexpensive compensators within a few minutes and requires minimal
Publikováno v:
International journal of radiation oncology, biology, physics. 10(12)
This paper reviews reasons cited for and against the use of lung corrections. It is suggested that all the reasons cited for not making corrections are no longer viable. A phantom has been designed to simulate the thorax region of a patient at both C
Publikováno v:
Medical dosimetry : official journal of the American Association of Medical Dosimetrists. 13(1)
Output factor has been used in megavoltage dosage calculations because collimator factor and backscatter factor are considered individually indeterminable. Output factor reflects the normalized product of backscatter factor and collimator factor for
Publikováno v:
SPIE Proceedings.
An evaluation of phantom materials is presented based on attenuation coefficients and measurements of phantom transmission using an image-intensifier system. Thicknesses of acrylic and copper that are equivalent to various anatomical regions are pres
Publikováno v:
International Journal of Radiation Oncology*Biology*Physics. 10:185