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1.
Film dosimetry of multiple electron beam ports with wedges.
Spunberg, J J; Kessaris, N D; Chang, C H.
Int J Radiat Oncol Biol Phys ; 6(3): 379-80, 1980 Mar.
Article in English | MEDLINE | ID: mdl-7390916

Subject(s)
Film Dosimetry/methods , Adolescent , Female , Humans , Neurilemmoma/radiotherapy , Postoperative Period , Radiotherapy Dosage , Thoracic Neoplasms/radiotherapy
2.
Transverse axial film tomography with a therapy simulator.
Kessaris, N D; Harisiadis, L.
Med Phys ; 7(2): 160-2, 1980.
Article in English | MEDLINE | ID: mdl-7382920

ABSTRACT

A tomographic attachment was designed and developed that attaches to our existing simulator. The film tomograms obtained with the aid of this device exhibit very low geometrical distortion and good contrast and resolution for the objects used in this investigation. In addition, our results to date show that adjacent areas with densities differing by as little as 5% can be distinguished on film.


Subject(s)
Radiotherapy/instrumentation , Tomography, X-Ray Computed , Humans , Models, Structural
3.
A dose compensator for mantle fields.
Kessaris, N D.
Int J Radiat Oncol Biol Phys ; 4(9-10): 889-94, 1978.
Article in English | MEDLINE | ID: mdl-101495

Subject(s)
Head and Neck Neoplasms/radiotherapy , Mediastinal Neoplasms/radiotherapy , Technology, Radiologic , Humans , Radiotherapy Dosage , Radiotherapy, High-Energy
4.
Discrepancy between C lambda and CE.
Holt, J G; Kessaris, N D.
Phys Med Biol ; 22(3): 538-40, 1977 May.
Article in English | MEDLINE | ID: mdl-866419

Subject(s)
Radiometry , Weights and Measures
5.
Diffusion of oxygen in bacterial cells after exposure to high intensity pulsed electrons: theoretical model and comparison with experiment.
Kessaris, N D; Weiss, H; Epp, E R.
Radiat Res ; 54(2): 181-91, 1973 May.
Article in English | MEDLINE | ID: mdl-4703882

Subject(s)
Bacteria/radiation effects , Electrons , Oxygen , Radiation Effects , Diffusion , Mathematics , Models, Biological , Time Factors
6.
Oxygen diffusion times in bacterial cells irradiated with high-intensity pulsed electrons: new upper limit to the lifetime of oxygen-sensitive species suspected to be induced at critical sites in bacterial cells.
Epp, E R; Weiss, H; Kessaris, N D; Santomasso, A; Heslin, J; Ling, C C.
Radiat Res ; 54(2): 171-80, 1973 May.
Article in English | MEDLINE | ID: mdl-4574205

Subject(s)
Electrons , Escherichia coli/radiation effects , Oxygen , Radiation Effects , Cell Survival/radiation effects , Diffusion , Time Factors
7.
Spectra of high-energy electron beams in water.
Kessaris, N D.
Radiat Res ; 43(2): 281-7, 1970 Aug.
Article in English | MEDLINE | ID: mdl-5451809

Subject(s)
Electrons , Spectrum Analysis , Water , Kinetics , Mathematics
8.
Absorbed dose and cavity ionization for high-energy electron beams.
Kessaris, N D.
Radiat Res ; 43(2): 288-301, 1970 Aug.
Article in English | MEDLINE | ID: mdl-5451810

Subject(s)
Electrons , Radiation Effects , Spectrum Analysis , Carbon , Densitometry , Gases , Mathematics , Radiotherapy Dosage , Water
9.
Relation between absorbed dose and cavity ionization for high-energy electron beams in water.
Kessaris, N D.
Ann N Y Acad Sci ; 161(1): 24-6, 1969 Jul 03.
Article in English | MEDLINE | ID: mdl-5257695

Subject(s)
Electrons , Radiometry , Water , Methods
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