Bile layering: a cause for false-positive cholescintiscans

A number of /sup 99m/Tc-labeled pharmaceuticals have been introduced recently for evaluation and diagnosis of hepatobiliary disease. Pyridoxylidene glutamate (PG) and iminodiacetic acid derivatives have evolved as the most useful agents due to excellent biliary excretion with rapid visualization of...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Am. J. Roentgenol.; (United States) 1980-06, Vol.134 (6), p.1251-1253
Hauptverfasser: Rao, B K, Lieberman, L M
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 1253
container_issue 6
container_start_page 1251
container_title Am. J. Roentgenol.; (United States)
container_volume 134
creator Rao, B K
Lieberman, L M
description A number of /sup 99m/Tc-labeled pharmaceuticals have been introduced recently for evaluation and diagnosis of hepatobiliary disease. Pyridoxylidene glutamate (PG) and iminodiacetic acid derivatives have evolved as the most useful agents due to excellent biliary excretion with rapid visualization of the gallbladder and the biliary ducts. These radiopharmaceuticals offer substantial advantages over /sup 131/I-rose bengal. In our experience of over 80 patients evaluated for various hepatobiliary disorders with /sup 99m/Tc PG or paraisopropyl acetanilidoiminodiacetic acid (PIPIDA), two patients had early cholescintigrams suggestive of intraluminal defects. These were not confirmed on delayed imaging. The cholescintigrams in these two patients were similar and suggested bile layering. Although demonstration of this phenomenon by oral cholecystography and intravenous cholangiography has been reported, we found no description of bile layering with radiopharmaceuticals.
doi_str_mv 10.2214/ajr.134.6.1251
format Article
fullrecord <record><control><sourceid>proquest_osti_</sourceid><recordid>TN_cdi_proquest_miscellaneous_75147534</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>75147534</sourcerecordid><originalsourceid>FETCH-LOGICAL-c357t-4e353828e8252a4c513912eacd08477e9b5cc5d8bd90c6a1f7a3094989c14ee43</originalsourceid><addsrcrecordid>eNo9kM9LwzAUx4Moc06v3oTiwVtrXpM0iTcd_oKBFwVvIUvfXEbXzKQV9t_bueHpXT7vw5cPIZdAi7IEfmtXsQDGi6qAUsARGYPgVc6AwzEZU1ZBrij7PCVnKa0opVJpOSKjSkpaMT0mdw--wayxW4y-_brLbOZsnzBbhJgtbJMw34TkO_-DmVuGBpPzbeeTs206Jyd_xMXhTsjH0-P79CWfvT2_Tu9nuWNCdjlHJpgqFapSlJY7AUxDidbVVHEpUc-Fc6JW81pTV1lYSMuo5lppBxyRswm53ntD6rwZBnToli60LbrOCEZBMRigmz20ieG7x9SZ9bASm8a2GPpkpAAuBdvZij3oYkgp4sJsol_buDVAza6oGYqaoaipzK7o8HB1MPfzNdb_-CEh-wXfQnBG</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>75147534</pqid></control><display><type>article</type><title>Bile layering: a cause for false-positive cholescintiscans</title><source>American Roentgen Ray Society</source><source>MEDLINE</source><source>Alma/SFX Local Collection</source><creator>Rao, B K ; Lieberman, L M</creator><creatorcontrib>Rao, B K ; Lieberman, L M ; Univ. of Wisconsin Hospital and Clinics, Madison</creatorcontrib><description>A number of /sup 99m/Tc-labeled pharmaceuticals have been introduced recently for evaluation and diagnosis of hepatobiliary disease. Pyridoxylidene glutamate (PG) and iminodiacetic acid derivatives have evolved as the most useful agents due to excellent biliary excretion with rapid visualization of the gallbladder and the biliary ducts. These radiopharmaceuticals offer substantial advantages over /sup 131/I-rose bengal. In our experience of over 80 patients evaluated for various hepatobiliary disorders with /sup 99m/Tc PG or paraisopropyl acetanilidoiminodiacetic acid (PIPIDA), two patients had early cholescintigrams suggestive of intraluminal defects. These were not confirmed on delayed imaging. The cholescintigrams in these two patients were similar and suggested bile layering. Although demonstration of this phenomenon by oral cholecystography and intravenous cholangiography has been reported, we found no description of bile layering with radiopharmaceuticals.</description><identifier>ISSN: 0361-803X</identifier><identifier>EISSN: 1546-3141</identifier><identifier>DOI: 10.2214/ajr.134.6.1251</identifier><identifier>PMID: 6770639</identifier><language>eng</language><publisher>United States</publisher><subject>550601 - Medicine- Unsealed Radionuclides in Diagnostics ; ACETIC ACID ESTERS ; Acute Disease ; AMINO ACIDS ; AZINES ; BETA DECAY RADIOISOTOPES ; BETA-MINUS DECAY RADIOISOTOPES ; BILE ; BILIARY TRACT ; BIOLOGICAL MATERIALS ; BODY ; BODY FLUIDS ; CARBOXYLIC ACID ESTERS ; CARBOXYLIC ACIDS ; Cholecystitis - diagnostic imaging ; Cholecystography ; Cholestasis - diagnostic imaging ; COMPARATIVE EVALUATIONS ; COUNTING TECHNIQUES ; DAYS LIVING RADIOISOTOPES ; DIAGNOSIS ; Diagnosis, Differential ; DIAGNOSTIC TECHNIQUES ; DIGESTIVE SYSTEM ; DIGESTIVE SYSTEM DISEASES ; DISEASES ; DYES ; ERRORS ; ESTERS ; False Positive Reactions ; Female ; Gallbladder - diagnostic imaging ; Gallbladder Diseases - diagnostic imaging ; GLANDS ; Glutamates ; GLUTAMIC ACID ; HETEROCYCLIC COMPOUNDS ; HOURS LIVING RADIOISOTOPES ; Humans ; HYDROXY ACIDS ; Imino Acids ; INDICATORS ; INTERMEDIATE MASS NUCLEI ; IODINE 131 ; IODINE ISOTOPES ; ISOMERIC NUCLEI ; ISOMERIC TRANSITION ISOTOPES ; ISOTOPES ; LIVER ; Male ; MATERIALS ; Middle Aged ; NUCLEI ; ODD-EVEN NUCLEI ; ORGANIC ACIDS ; ORGANIC CHLORINE COMPOUNDS ; ORGANIC COMPOUNDS ; ORGANIC HALOGEN COMPOUNDS ; ORGANIC IODINE COMPOUNDS ; ORGANIC NITROGEN COMPOUNDS ; Organotechnetium Compounds ; ORGANS ; PATIENTS ; Posture ; PYRIDINES ; Pyridoxal - analogs &amp; derivatives ; PYRIDOXYLIDENEGLUTAMATE ; RADIOISOTOPE SCANNING ; RADIOISOTOPES ; RADIOLOGY AND NUCLEAR MEDICINE ; Radionuclide Imaging ; REAGENTS ; ROSE BENGAL ; SCINTISCANNING ; Technetium ; TECHNETIUM 99 ; TECHNETIUM ISOTOPES ; YEARS LIVING RADIOISOTOPES</subject><ispartof>Am. J. Roentgenol.; (United States), 1980-06, Vol.134 (6), p.1251-1253</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c357t-4e353828e8252a4c513912eacd08477e9b5cc5d8bd90c6a1f7a3094989c14ee43</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,881,4105,27903,27904</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/6770639$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/5301831$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Rao, B K</creatorcontrib><creatorcontrib>Lieberman, L M</creatorcontrib><creatorcontrib>Univ. of Wisconsin Hospital and Clinics, Madison</creatorcontrib><title>Bile layering: a cause for false-positive cholescintiscans</title><title>Am. J. Roentgenol.; (United States)</title><addtitle>AJR Am J Roentgenol</addtitle><description>A number of /sup 99m/Tc-labeled pharmaceuticals have been introduced recently for evaluation and diagnosis of hepatobiliary disease. Pyridoxylidene glutamate (PG) and iminodiacetic acid derivatives have evolved as the most useful agents due to excellent biliary excretion with rapid visualization of the gallbladder and the biliary ducts. These radiopharmaceuticals offer substantial advantages over /sup 131/I-rose bengal. In our experience of over 80 patients evaluated for various hepatobiliary disorders with /sup 99m/Tc PG or paraisopropyl acetanilidoiminodiacetic acid (PIPIDA), two patients had early cholescintigrams suggestive of intraluminal defects. These were not confirmed on delayed imaging. The cholescintigrams in these two patients were similar and suggested bile layering. Although demonstration of this phenomenon by oral cholecystography and intravenous cholangiography has been reported, we found no description of bile layering with radiopharmaceuticals.</description><subject>550601 - Medicine- Unsealed Radionuclides in Diagnostics</subject><subject>ACETIC ACID ESTERS</subject><subject>Acute Disease</subject><subject>AMINO ACIDS</subject><subject>AZINES</subject><subject>BETA DECAY RADIOISOTOPES</subject><subject>BETA-MINUS DECAY RADIOISOTOPES</subject><subject>BILE</subject><subject>BILIARY TRACT</subject><subject>BIOLOGICAL MATERIALS</subject><subject>BODY</subject><subject>BODY FLUIDS</subject><subject>CARBOXYLIC ACID ESTERS</subject><subject>CARBOXYLIC ACIDS</subject><subject>Cholecystitis - diagnostic imaging</subject><subject>Cholecystography</subject><subject>Cholestasis - diagnostic imaging</subject><subject>COMPARATIVE EVALUATIONS</subject><subject>COUNTING TECHNIQUES</subject><subject>DAYS LIVING RADIOISOTOPES</subject><subject>DIAGNOSIS</subject><subject>Diagnosis, Differential</subject><subject>DIAGNOSTIC TECHNIQUES</subject><subject>DIGESTIVE SYSTEM</subject><subject>DIGESTIVE SYSTEM DISEASES</subject><subject>DISEASES</subject><subject>DYES</subject><subject>ERRORS</subject><subject>ESTERS</subject><subject>False Positive Reactions</subject><subject>Female</subject><subject>Gallbladder - diagnostic imaging</subject><subject>Gallbladder Diseases - diagnostic imaging</subject><subject>GLANDS</subject><subject>Glutamates</subject><subject>GLUTAMIC ACID</subject><subject>HETEROCYCLIC COMPOUNDS</subject><subject>HOURS LIVING RADIOISOTOPES</subject><subject>Humans</subject><subject>HYDROXY ACIDS</subject><subject>Imino Acids</subject><subject>INDICATORS</subject><subject>INTERMEDIATE MASS NUCLEI</subject><subject>IODINE 131</subject><subject>IODINE ISOTOPES</subject><subject>ISOMERIC NUCLEI</subject><subject>ISOMERIC TRANSITION ISOTOPES</subject><subject>ISOTOPES</subject><subject>LIVER</subject><subject>Male</subject><subject>MATERIALS</subject><subject>Middle Aged</subject><subject>NUCLEI</subject><subject>ODD-EVEN NUCLEI</subject><subject>ORGANIC ACIDS</subject><subject>ORGANIC CHLORINE COMPOUNDS</subject><subject>ORGANIC COMPOUNDS</subject><subject>ORGANIC HALOGEN COMPOUNDS</subject><subject>ORGANIC IODINE COMPOUNDS</subject><subject>ORGANIC NITROGEN COMPOUNDS</subject><subject>Organotechnetium Compounds</subject><subject>ORGANS</subject><subject>PATIENTS</subject><subject>Posture</subject><subject>PYRIDINES</subject><subject>Pyridoxal - analogs &amp; derivatives</subject><subject>PYRIDOXYLIDENEGLUTAMATE</subject><subject>RADIOISOTOPE SCANNING</subject><subject>RADIOISOTOPES</subject><subject>RADIOLOGY AND NUCLEAR MEDICINE</subject><subject>Radionuclide Imaging</subject><subject>REAGENTS</subject><subject>ROSE BENGAL</subject><subject>SCINTISCANNING</subject><subject>Technetium</subject><subject>TECHNETIUM 99</subject><subject>TECHNETIUM ISOTOPES</subject><subject>YEARS LIVING RADIOISOTOPES</subject><issn>0361-803X</issn><issn>1546-3141</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1980</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo9kM9LwzAUx4Moc06v3oTiwVtrXpM0iTcd_oKBFwVvIUvfXEbXzKQV9t_bueHpXT7vw5cPIZdAi7IEfmtXsQDGi6qAUsARGYPgVc6AwzEZU1ZBrij7PCVnKa0opVJpOSKjSkpaMT0mdw--wayxW4y-_brLbOZsnzBbhJgtbJMw34TkO_-DmVuGBpPzbeeTs206Jyd_xMXhTsjH0-P79CWfvT2_Tu9nuWNCdjlHJpgqFapSlJY7AUxDidbVVHEpUc-Fc6JW81pTV1lYSMuo5lppBxyRswm53ntD6rwZBnToli60LbrOCEZBMRigmz20ieG7x9SZ9bASm8a2GPpkpAAuBdvZij3oYkgp4sJsol_buDVAza6oGYqaoaipzK7o8HB1MPfzNdb_-CEh-wXfQnBG</recordid><startdate>198006</startdate><enddate>198006</enddate><creator>Rao, B K</creator><creator>Lieberman, L M</creator><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>OTOTI</scope></search><sort><creationdate>198006</creationdate><title>Bile layering: a cause for false-positive cholescintiscans</title><author>Rao, B K ; Lieberman, L M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c357t-4e353828e8252a4c513912eacd08477e9b5cc5d8bd90c6a1f7a3094989c14ee43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1980</creationdate><topic>550601 - Medicine- Unsealed Radionuclides in Diagnostics</topic><topic>ACETIC ACID ESTERS</topic><topic>Acute Disease</topic><topic>AMINO ACIDS</topic><topic>AZINES</topic><topic>BETA DECAY RADIOISOTOPES</topic><topic>BETA-MINUS DECAY RADIOISOTOPES</topic><topic>BILE</topic><topic>BILIARY TRACT</topic><topic>BIOLOGICAL MATERIALS</topic><topic>BODY</topic><topic>BODY FLUIDS</topic><topic>CARBOXYLIC ACID ESTERS</topic><topic>CARBOXYLIC ACIDS</topic><topic>Cholecystitis - diagnostic imaging</topic><topic>Cholecystography</topic><topic>Cholestasis - diagnostic imaging</topic><topic>COMPARATIVE EVALUATIONS</topic><topic>COUNTING TECHNIQUES</topic><topic>DAYS LIVING RADIOISOTOPES</topic><topic>DIAGNOSIS</topic><topic>Diagnosis, Differential</topic><topic>DIAGNOSTIC TECHNIQUES</topic><topic>DIGESTIVE SYSTEM</topic><topic>DIGESTIVE SYSTEM DISEASES</topic><topic>DISEASES</topic><topic>DYES</topic><topic>ERRORS</topic><topic>ESTERS</topic><topic>False Positive Reactions</topic><topic>Female</topic><topic>Gallbladder - diagnostic imaging</topic><topic>Gallbladder Diseases - diagnostic imaging</topic><topic>GLANDS</topic><topic>Glutamates</topic><topic>GLUTAMIC ACID</topic><topic>HETEROCYCLIC COMPOUNDS</topic><topic>HOURS LIVING RADIOISOTOPES</topic><topic>Humans</topic><topic>HYDROXY ACIDS</topic><topic>Imino Acids</topic><topic>INDICATORS</topic><topic>INTERMEDIATE MASS NUCLEI</topic><topic>IODINE 131</topic><topic>IODINE ISOTOPES</topic><topic>ISOMERIC NUCLEI</topic><topic>ISOMERIC TRANSITION ISOTOPES</topic><topic>ISOTOPES</topic><topic>LIVER</topic><topic>Male</topic><topic>MATERIALS</topic><topic>Middle Aged</topic><topic>NUCLEI</topic><topic>ODD-EVEN NUCLEI</topic><topic>ORGANIC ACIDS</topic><topic>ORGANIC CHLORINE COMPOUNDS</topic><topic>ORGANIC COMPOUNDS</topic><topic>ORGANIC HALOGEN COMPOUNDS</topic><topic>ORGANIC IODINE COMPOUNDS</topic><topic>ORGANIC NITROGEN COMPOUNDS</topic><topic>Organotechnetium Compounds</topic><topic>ORGANS</topic><topic>PATIENTS</topic><topic>Posture</topic><topic>PYRIDINES</topic><topic>Pyridoxal - analogs &amp; derivatives</topic><topic>PYRIDOXYLIDENEGLUTAMATE</topic><topic>RADIOISOTOPE SCANNING</topic><topic>RADIOISOTOPES</topic><topic>RADIOLOGY AND NUCLEAR MEDICINE</topic><topic>Radionuclide Imaging</topic><topic>REAGENTS</topic><topic>ROSE BENGAL</topic><topic>SCINTISCANNING</topic><topic>Technetium</topic><topic>TECHNETIUM 99</topic><topic>TECHNETIUM ISOTOPES</topic><topic>YEARS LIVING RADIOISOTOPES</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rao, B K</creatorcontrib><creatorcontrib>Lieberman, L M</creatorcontrib><creatorcontrib>Univ. of Wisconsin Hospital and Clinics, Madison</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>OSTI.GOV</collection><jtitle>Am. J. Roentgenol.; (United States)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rao, B K</au><au>Lieberman, L M</au><aucorp>Univ. of Wisconsin Hospital and Clinics, Madison</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Bile layering: a cause for false-positive cholescintiscans</atitle><jtitle>Am. J. Roentgenol.; (United States)</jtitle><addtitle>AJR Am J Roentgenol</addtitle><date>1980-06</date><risdate>1980</risdate><volume>134</volume><issue>6</issue><spage>1251</spage><epage>1253</epage><pages>1251-1253</pages><issn>0361-803X</issn><eissn>1546-3141</eissn><abstract>A number of /sup 99m/Tc-labeled pharmaceuticals have been introduced recently for evaluation and diagnosis of hepatobiliary disease. Pyridoxylidene glutamate (PG) and iminodiacetic acid derivatives have evolved as the most useful agents due to excellent biliary excretion with rapid visualization of the gallbladder and the biliary ducts. These radiopharmaceuticals offer substantial advantages over /sup 131/I-rose bengal. In our experience of over 80 patients evaluated for various hepatobiliary disorders with /sup 99m/Tc PG or paraisopropyl acetanilidoiminodiacetic acid (PIPIDA), two patients had early cholescintigrams suggestive of intraluminal defects. These were not confirmed on delayed imaging. The cholescintigrams in these two patients were similar and suggested bile layering. Although demonstration of this phenomenon by oral cholecystography and intravenous cholangiography has been reported, we found no description of bile layering with radiopharmaceuticals.</abstract><cop>United States</cop><pmid>6770639</pmid><doi>10.2214/ajr.134.6.1251</doi><tpages>3</tpages><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 0361-803X
ispartof Am. J. Roentgenol.; (United States), 1980-06, Vol.134 (6), p.1251-1253
issn 0361-803X
1546-3141
language eng
recordid cdi_proquest_miscellaneous_75147534
source American Roentgen Ray Society; MEDLINE; Alma/SFX Local Collection
subjects 550601 - Medicine- Unsealed Radionuclides in Diagnostics
ACETIC ACID ESTERS
Acute Disease
AMINO ACIDS
AZINES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BILE
BILIARY TRACT
BIOLOGICAL MATERIALS
BODY
BODY FLUIDS
CARBOXYLIC ACID ESTERS
CARBOXYLIC ACIDS
Cholecystitis - diagnostic imaging
Cholecystography
Cholestasis - diagnostic imaging
COMPARATIVE EVALUATIONS
COUNTING TECHNIQUES
DAYS LIVING RADIOISOTOPES
DIAGNOSIS
Diagnosis, Differential
DIAGNOSTIC TECHNIQUES
DIGESTIVE SYSTEM
DIGESTIVE SYSTEM DISEASES
DISEASES
DYES
ERRORS
ESTERS
False Positive Reactions
Female
Gallbladder - diagnostic imaging
Gallbladder Diseases - diagnostic imaging
GLANDS
Glutamates
GLUTAMIC ACID
HETEROCYCLIC COMPOUNDS
HOURS LIVING RADIOISOTOPES
Humans
HYDROXY ACIDS
Imino Acids
INDICATORS
INTERMEDIATE MASS NUCLEI
IODINE 131
IODINE ISOTOPES
ISOMERIC NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LIVER
Male
MATERIALS
Middle Aged
NUCLEI
ODD-EVEN NUCLEI
ORGANIC ACIDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC IODINE COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
Organotechnetium Compounds
ORGANS
PATIENTS
Posture
PYRIDINES
Pyridoxal - analogs & derivatives
PYRIDOXYLIDENEGLUTAMATE
RADIOISOTOPE SCANNING
RADIOISOTOPES
RADIOLOGY AND NUCLEAR MEDICINE
Radionuclide Imaging
REAGENTS
ROSE BENGAL
SCINTISCANNING
Technetium
TECHNETIUM 99
TECHNETIUM ISOTOPES
YEARS LIVING RADIOISOTOPES
title Bile layering: a cause for false-positive cholescintiscans
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-26T07%3A37%3A50IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_osti_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Bile%20layering:%20a%20cause%20for%20false-positive%20cholescintiscans&rft.jtitle=Am.%20J.%20Roentgenol.;%20(United%20States)&rft.au=Rao,%20B%20K&rft.aucorp=Univ.%20of%20Wisconsin%20Hospital%20and%20Clinics,%20Madison&rft.date=1980-06&rft.volume=134&rft.issue=6&rft.spage=1251&rft.epage=1253&rft.pages=1251-1253&rft.issn=0361-803X&rft.eissn=1546-3141&rft_id=info:doi/10.2214/ajr.134.6.1251&rft_dat=%3Cproquest_osti_%3E75147534%3C/proquest_osti_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=75147534&rft_id=info:pmid/6770639&rfr_iscdi=true