### Abstract

The fraction of X- and gamma -ray photons that give rise to a K-edge escape photon of iodine as a function of photon energy is derived for a NaI(Tl) detector from published values in the literature and confirmed by experimental measurement for a 2*2 inch detector. These values are used to derive a matrix describing the K-edge escape of iodine for NaI(Tl) photon detectors. The fraction of Compton photons scattered into each lower energy channel as a function of incident photon energy is measured utilizing monoenergetic photon sources. From these measured values, a matrix is derived that described the effects of Compton scatter in the crystal as a function of incident photon energy. The matrix E_{kj}(E), describing K-edge escape photons, and the matrix, S_{kj}(E), describing Compton scatter, are combined to form the matrix C_{kj}(E), describing both escape and Compton scattered photons.

Original language | English (US) |
---|---|

Article number | 014 |

Pages (from-to) | 585-586 |

Number of pages | 2 |

Journal | Physics in Medicine and Biology |

Volume | 18 |

Issue number | 4 |

DOIs | |

State | Published - 1973 |

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### ASJC Scopus subject areas

- Radiological and Ultrasound Technology
- Radiology Nuclear Medicine and imaging
- Physics and Astronomy (miscellaneous)
- Biomedical Engineering

### Cite this

*Physics in Medicine and Biology*,

*18*(4), 585-586. [014]. https://doi.org/10.1088/0031-9155/18/4/014

**A matrix to correct for K-edge escape and Compton scatter in X- and gamma -ray detectors.** / Waggener, R. G.; McDavid, W. D.; Levy, L. B.; Zanca, P.

Research output: Contribution to journal › Article

*Physics in Medicine and Biology*, vol. 18, no. 4, 014, pp. 585-586. https://doi.org/10.1088/0031-9155/18/4/014

}

TY - JOUR

T1 - A matrix to correct for K-edge escape and Compton scatter in X- and gamma -ray detectors

AU - Waggener, R. G.

AU - McDavid, W. D.

AU - Levy, L. B.

AU - Zanca, P.

PY - 1973

Y1 - 1973

N2 - The fraction of X- and gamma -ray photons that give rise to a K-edge escape photon of iodine as a function of photon energy is derived for a NaI(Tl) detector from published values in the literature and confirmed by experimental measurement for a 2*2 inch detector. These values are used to derive a matrix describing the K-edge escape of iodine for NaI(Tl) photon detectors. The fraction of Compton photons scattered into each lower energy channel as a function of incident photon energy is measured utilizing monoenergetic photon sources. From these measured values, a matrix is derived that described the effects of Compton scatter in the crystal as a function of incident photon energy. The matrix Ekj(E), describing K-edge escape photons, and the matrix, Skj(E), describing Compton scatter, are combined to form the matrix Ckj(E), describing both escape and Compton scattered photons.

AB - The fraction of X- and gamma -ray photons that give rise to a K-edge escape photon of iodine as a function of photon energy is derived for a NaI(Tl) detector from published values in the literature and confirmed by experimental measurement for a 2*2 inch detector. These values are used to derive a matrix describing the K-edge escape of iodine for NaI(Tl) photon detectors. The fraction of Compton photons scattered into each lower energy channel as a function of incident photon energy is measured utilizing monoenergetic photon sources. From these measured values, a matrix is derived that described the effects of Compton scatter in the crystal as a function of incident photon energy. The matrix Ekj(E), describing K-edge escape photons, and the matrix, Skj(E), describing Compton scatter, are combined to form the matrix Ckj(E), describing both escape and Compton scattered photons.

UR - http://www.scopus.com/inward/record.url?scp=36149074551&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=36149074551&partnerID=8YFLogxK

U2 - 10.1088/0031-9155/18/4/014

DO - 10.1088/0031-9155/18/4/014

M3 - Article

VL - 18

SP - 585

EP - 586

JO - Physics in Medicine and Biology

JF - Physics in Medicine and Biology

SN - 0031-9155

IS - 4

M1 - 014

ER -