Calibration of x-ray and gamma-ray measuring instruments

Lamperti, P.; Loftus, T.; Loevinger, Robert

doi:10.6028/nbs.sp.250-16

Cited by 19 publications

(30 citation statements)

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“…The beam is 80 kVp with a half value layer of 2.97 mm Al. 36 The terminal field size was 21.3 cm in diameter at a source-to-target distance of one meter. 36 The M80 beam was characterized by the NIST calibration supervisor before each session using the Wyckoff-Attix free air chamber ( Figure 9).…”

Section: Imagej® Softwarementioning

confidence: 99%

“…For each exposure, the exposure rate was multiplied by the exposure time reading from the NIST exposure control computer. 36 The resulting exposure in roentgens was converted to delivered dose in rads using the below equation, where μ m and μ a are the mass attenuation coefficients for ICRU-44 soft tissue and air respectively 37 and ρ m and ρ a are the densities of ICRU-44 soft tissue and air. 37 The delivered dose in rads was plotted vs pixel density using MATLAB® ver 7.0.1 (MATLAB®, MathWorks, Natick, Massachusetts).…”

Section: Dose Determinationmentioning

confidence: 99%

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Verification of Caregraph (trademark) Peak Skin Dose Data Using Radiochromic Film

Ozeroglu¹

2005

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Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. The author hereby certifies that the use of any copyrighted material in the thesis manuscript entitled:Verification of Caregraph® Peak Skin Dose Data Using Radiochromic Film beyond brief excerpts is with the permission of the copyright owner, and will save and hold harmless the Uniformed Services University of the Health Sciences from any damage, which may arise from such copyright violations. procedures has become an important concern and has been documented for interventional neuroradiology and cardiology procedures. [1][2][3][4] The risk to any location on the skin increases with the radiation dose to that portion of the skin, 3,5,6 and the maximum dose delivered to any portion of the skin during a procedure (the peak skin dose) determines the risk of injury at that point. iv

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Section: Imagej® Softwarementioning

confidence: 99%

Section: Dose Determinationmentioning

confidence: 99%

Verification of Caregraph (trademark) Peak Skin Dose Data Using Radiochromic Film

Ozeroglu¹

2005

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“…A test of the consistency of the standard chamber measurements for these two sources using the replacement method showed a difference between the ratios of the open-air measurements for ICN 100 and ICN 500, and the replacement measurements, of about 0.1% (table [3][4][5][6][7][8][9][10][11][12][13].…”

Section: Background Informationmentioning

confidence: 99%

“…12. KEY WORDS (S/x to twelve entries; alphabetical order; capitalize only proper names; and separate key words by semicolons) air kerma; air-kerma strength; brachytherapy; calibration; cesium-j.37; cobalt-60; exposure; iodine-125; iridium-192; radioactive source; reentrant chamber; standard; uncertainty 13 …”

Section: Radiation Safetymentioning

confidence: 99%