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LEADER 03498cam a2200553 i 4500

001 ocm14385519;

003 OCoLC;

005 20230124155753.0;

008 790628s1978 dcua b f000 0 eng ;

016 7 a| 79061002| DNLM;

019 a| 4227763;

028 02 a| 003-003-01968b| Superintendent of Documents;

035 a| (Sirsi) o14385519;

037 a| 003-003-01968-2;

037 b| 20402;

049 a| ERE#;

050 4 a| QC100b| .U575 no.978;

060 00 a| WN 450b| S675n 1978;

074 a| 0249-A;

086 0 a| C 13.46:978;

100 1 a| Soares, C. G.e| author.=| ^A605029;

245 10 a| Nationwide survey of cobalt-60 teletherapy dosimetry /c| C. G. Soares [and] M. Ehrlich.;

264 1 a| Washington, D.C. :b| U.S. Dept. of Commerce, National Bureau of Standards, National Measurement Laboratory, Center for Radiation Research :b| For sale by the Supt. of Docs., U.S. Govt. Print. Off.,c| 1978.;

300 a| iii, 36 pages :b| illustrations. ;c| 26 cm.;

336 a| textb| txt2| rdacontent;

337 a| unmediatedb| n2| rdamedia;

338 a| volumeb| nc2| rdacarrier;

490 1 a| National Bureau of Standards technical note ;v| 978;

500 a| Sponsored by Radioactive Materials Branch, Bureau of Radiological Health.;

504 a| Includes bibliographical references (page 20).;

505 0 a| Introduction -- Administrative procedure -- Description of dosimetry system -- Dose interpretation from TL response -- Discussion of survey results -- Comparison with results of others.;

518 a| Issued August 1978.;

520 a| Between September 1974 and December 1977, the National Bureau of Standards, in cooperation with the Bureau of Radiological Health, performed a study of the accuracy with which a prescribed absorbed dose of cobalt-60 gamma radiation is delivered to a specified point in a water phantom. Approximately two-thirds of the cobalt-60 teletherapy units in the U.S. were surveyed by mail, using a rugged thermoluminescence dosimetry system. The dose given by participants was evaluated from dosimeter response, and information supplied by participants was used to check their computations of the dose delivered. In this nationwide study, 83% of the units surveyed yielded dose interpretations within 5% of the requested dose, 13% yielded differences between 5 and 10%, and 4% of the dose interpretations differed by more than 10% from the dose requested. Sources of discrepancies are discussed, and the results of this survey are compared with those of other dosimetry surveys.;

500 a| GPO Historic Shelflist Project- publication not in hand.;

500 a| GPO Cataloging Record Distribution Program (CRDP).;

650 0 a| Cobaltx| Therapeutic use.=| ^A75932;

650 0 a| Radiation dosimetry.=| ^A10185;

650 0 a| Radioisotope teletherapy.=| ^A827779;

655 7 a| Technical reports.2| lcgft;

655 7 a| Rapports techniques.2| rvmgf0| (CaQQLa)RVMGF-000001776;

700 1 a| Ehrlich, M.q| (Margarete)e| author.=| ^A599499;

710 1 a| United States.b| National Bureau of Standards,e| issuing body.=| ^A44678;

710 1 a| United States.b| Bureau of Radiological Health.=| ^A12641;

830 0 a| NBS technical note ;v| 978.=| ^A4336;

949 a| C 13.46:978w| sudoch| joyner38;

596 a| 1;

998 a| 1009792;

999 a| C 13.46:978w| SUDOCc| 1i| 30372012796006d| 9/20/2005l| JDOSm| JOYNERr| Ys| Yt| JDOSBKu| 9/20/2005x| BOOKz| JFEDDOCSo| .STAFF. 0;

Nationwide survey of cobalt-60 teletherapy dosimetry / C. G. Soares [and] M. Ehrlich.

Author/creator	Soares, C. G. author.
Other author	Ehrlich, M. (Margarete) author.
Other author	United States. National Bureau of Standards, issuing body.
Other author	United States. Bureau of Radiological Health.
Format	Book
Publication	Washington, D.C. : U.S. Dept. of Commerce, National Bureau of Standards, National Measurement Laboratory, Center for Radiation Research : For sale by the Supt. of Docs., U.S. Govt. Print. Off., 1978.
Description	iii, 36 pages : illustrations. ; 26 cm.
Subjects	Cobalt--Therapeutic use. Radiation dosimetry. Radioisotope teletherapy.

Series	National Bureau of Standards technical note ; 978 NBS technical note ; 978. ^A4336
Contents	Introduction -- Administrative procedure -- Description of dosimetry system -- Dose interpretation from TL response -- Discussion of survey results -- Comparison with results of others.
Abstract	Between September 1974 and December 1977, the National Bureau of Standards, in cooperation with the Bureau of Radiological Health, performed a study of the accuracy with which a prescribed absorbed dose of cobalt-60 gamma radiation is delivered to a specified point in a water phantom. Approximately two-thirds of the cobalt-60 teletherapy units in the U.S. were surveyed by mail, using a rugged thermoluminescence dosimetry system. The dose given by participants was evaluated from dosimeter response, and information supplied by participants was used to check their computations of the dose delivered. In this nationwide study, 83% of the units surveyed yielded dose interpretations within 5% of the requested dose, 13% yielded differences between 5 and 10%, and 4% of the dose interpretations differed by more than 10% from the dose requested. Sources of discrepancies are discussed, and the results of this survey are compared with those of other dosimetry surveys.
General note	Sponsored by Radioactive Materials Branch, Bureau of Radiological Health.
General note	GPO Historic Shelflist Project- publication not in hand.
General note	GPO Cataloging Record Distribution Program (CRDP).
Bibliography note	Includes bibliographical references (page 20).
Date/time/place of a event note	Issued August 1978.
Genre/form	Technical reports.
Genre/form	Rapports techniques.
Publisher number	003-003-01968 Superintendent of Documents
GPO item number	0249-A
Govt. docs number	C 13.46:978
Stock number	003-003-01968-2
Stock number	20402

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Nationwide survey of cobalt-60 teletherapy dosimetry / C. G. Soares [and] M. Ehrlich.

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