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Title: Compton-backscattering x-ray source for coronary angiography

Abstract

An X-ray source utilizing Compton-backscattered (CB) photons in a 75-MeV electron storage ring containing an infrared FEL is proposed for producing 33.17-keV X-rays (Iodine K-edge) for coronary angiography. The X-ray intensity into a 4-mrad cone is computed as 7.21 [times] 10[sup 14]/sec for a 500-mA electron beam colliding with 0.2-J/bunch, 3.22-[mu]m photons from an in-ring IR-FEL at the 353.21-MHz rate of a SLAC-PEP 500-kW RF system. The resultant average flux at the patient is 6.4 [times] 10[sup 7] photons/pixel/4-msec aver a 12-cm diameter circle at 3-m from the interaction point for the 0.5 [times]0.5-mm[sup 2] pixel size of the present Si(Li) array of the BNL-SMERF Angiography Facility. This flux is 2.1 times larger than obtains at SMERF at a comparable source-to-patient distance and over an area sufficient to encompass the entire coronary region. However, the X-Ray energy spread due to kinematics alone is 2.63-keV, a factor of 35 larger then SMERF, and presents the major difficulty for the digital subtraction angiography method (DSA) envisioned.

Authors:
Publication Date:
Research Org.:
Brookhaven National Lab., Upton, NY (United States)
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
7136250
Report Number(s):
BNL-48016; CONF-921116-13
ON: DE93003473
DOE Contract Number:  
AC02-76CH00016
Resource Type:
Conference
Resource Relation:
Conference: 12. international conference on the application of accelerators in research and industry, Denton, TX (United States), 2-5 Nov 1992
Country of Publication:
United States
Language:
English
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; BIOMEDICAL RADIOGRAPHY; RADIATION SOURCES; COMPTON EFFECT; CORONARIES; RADIATION FLUX; STORAGE RINGS; ARTERIES; BASIC INTERACTIONS; BLOOD VESSELS; BODY; CARDIOVASCULAR SYSTEM; DIAGNOSTIC TECHNIQUES; ELASTIC SCATTERING; ELECTROMAGNETIC INTERACTIONS; INTERACTIONS; MEDICINE; NUCLEAR MEDICINE; ORGANS; RADIOLOGY; SCATTERING; 550602* - Medicine- External Radiation in Diagnostics- (1980-)

Citation Formats

Blumberg, L N. Compton-backscattering x-ray source for coronary angiography. United States: N. p., 1992. Web.
Blumberg, L N. Compton-backscattering x-ray source for coronary angiography. United States.
Blumberg, L N. 1992. "Compton-backscattering x-ray source for coronary angiography". United States. https://www.osti.gov/servlets/purl/7136250.
@article{osti_7136250,
title = {Compton-backscattering x-ray source for coronary angiography},
author = {Blumberg, L N},
abstractNote = {An X-ray source utilizing Compton-backscattered (CB) photons in a 75-MeV electron storage ring containing an infrared FEL is proposed for producing 33.17-keV X-rays (Iodine K-edge) for coronary angiography. The X-ray intensity into a 4-mrad cone is computed as 7.21 [times] 10[sup 14]/sec for a 500-mA electron beam colliding with 0.2-J/bunch, 3.22-[mu]m photons from an in-ring IR-FEL at the 353.21-MHz rate of a SLAC-PEP 500-kW RF system. The resultant average flux at the patient is 6.4 [times] 10[sup 7] photons/pixel/4-msec aver a 12-cm diameter circle at 3-m from the interaction point for the 0.5 [times]0.5-mm[sup 2] pixel size of the present Si(Li) array of the BNL-SMERF Angiography Facility. This flux is 2.1 times larger than obtains at SMERF at a comparable source-to-patient distance and over an area sufficient to encompass the entire coronary region. However, the X-Ray energy spread due to kinematics alone is 2.63-keV, a factor of 35 larger then SMERF, and presents the major difficulty for the digital subtraction angiography method (DSA) envisioned.},
doi = {},
url = {https://www.osti.gov/biblio/7136250}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1992},
month = {Wed Jan 01 00:00:00 EST 1992}
}

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