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Bonafous, J.; Constantinesco, A.; Meyer, P.; Bidet, R.; Healy, J.C.; Chambron, J.; Lobera, A.; Chopin, J.
17. French language symposiun on nuclear medicine. Paris, June 2-4, 19751975
17. French language symposiun on nuclear medicine. Paris, June 2-4, 19751975
AbstractAbstract
[en] The method of thrombosis detection by iodine 131-labelled exogenous fibrinogen was evaluated by comparison with three physical methods: an isotopic method using selenomethionine-labelled endogenous fibrinogen, phlebography, phletysmography by electrical impedance. The results confirm the superiority of the isotopic method with regard to efficiency and comfort for the patient. Under certain conditions the frequency of positive tests was the same with selenomethionine as with exogenous fibrinogen
[fr]
La methode de detection des thromboses utilisant le fibrinogene exogene marque a l'iode 131 a ete confrontee a trois methodes physiques, afin de preciser sa valeur: une methode isotopique au fibrinogene endogene marque a la selenomethionine, la phlebographie, la phletysmographie par impedance electrique. Les resultats confirment que la methode isotopique demeure la plus efficace et la plus confortable pour le malade. Dans certaines conditions, la frequence des tests positifs a la selenomethionine a ete identique a celle des tests au fibrinogene exogeneOriginal Title
Detection et surveillance des thromboses veineuses profondes par des methodes physiques, radiologiques et electriques
Primary Subject
Source
Kellershohn, C.; Raynaud, C. (eds.); CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Dept. de Biologie; p. 190-193; ISBN 2727200013;
; 1975; 17. French language symposium on nuclear medicine; Paris, France; 02 Jun 1975

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BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BLOOD COAGULATION FACTORS, CARDIOVASCULAR DISEASES, COUNTING TECHNIQUES, DAYS LIVING RADIOISOTOPES, DIAGNOSTIC TECHNIQUES, DISEASES, ELECTRON CAPTURE RADIOISOTOPES, EVEN-ODD NUCLEI, GLOBULINS, INTERMEDIATE MASS NUCLEI, IODINE ISOTOPES, ISOTOPES, MEDICINE, NUCLEAR MEDICINE, NUCLEI, ODD-EVEN NUCLEI, ORGANIC COMPOUNDS, PROTEINS, RADIOACTIVE MATERIALS, RADIOISOTOPE SCANNING, RADIOISOTOPES, SELENIUM ISOTOPES
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Analysis of scintillation gamma camera signals for determination of the heart-lung transfer function
Dumitresco, B.; Constantinesco, A.; Bonafous, J.; Healy, J.C.; Chambron, J.
17. French language symposium on nuclear medicine. Paris, June 2-4, 19751975
17. French language symposium on nuclear medicine. Paris, June 2-4, 19751975
AbstractAbstract
[en] The idea was to use the transfer function of part of the circulation system to determine the distribution of tracer molecule transit times in this system. The results obtained for the transfer function in a theoretical case with recirculation and in an actual case were compared by using the signals from a γ camera. The study of this transfer function offers an approach, independently of tracer injection conditions, to the rheological flow parameters in the haemodynamic system considered
[fr]
On a envisage l'utilisation de la fonction de transfert d'une partie du reseau circulatoire pour la determination de la repartition des temps de transit des molecules d'un traceur dans ce reseau. On a compare les resultats obtenus pour la fonction de transfert dans un cas theorique avec recirculation et dans un cas reel en utilisant les signaux issus d'une γ camera. L'etude de cette fonction de transfert permet une approche independante des conditions d'injection du traceur, des parametres rheologiques de l'ecoulement au niveau du systeme hemodynamique considereOriginal Title
Analyse des signaux de la gamma-camera a scintillation pour la determination de la fonction de transfert cardio-pulmonaire
Primary Subject
Source
Kellershohn, C.; Raynaud, C. (eds.); CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Dept. de Biologie; p. 136-139; ISBN 2727200013;
; 1975; 17. French language symposium on nuclear medicine; Paris, France; 02 Jun 1975

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AbstractAbstract
[en] The main technical and methodological novelties adopted or proposed during the last few years concerning the basic equipment needed for quantitative dynamic studies are reviewed. To this end the different components of an analysis unit are dealt with point by point to show up some of the improvements made on both the detector, which in most cases is still the scintillation camera, and the processing system. A few examples of methodological progress are also given. Some applications in cardiology are then mentioned, with special reference to the quantitative data supplied by the various methods available owing to the scintillation camera and the practical and clinical conditions under which these methods are applicable: gamma-angiocardiography, gamma-cinecardiography, the study of myocardium perfusion. It is shown that most parameters useful to cardiologists can be calculated by the use of these methods
[fr]
On fait une revue d'ensemble des principales nouveautes techniques et methodologiques adoptees ou proposees au cours des toutes dernieres annees concernant les dispositifs de base necessaires aux etudes dynamiques quantitatives. Pour ce faire, on reprend point par point les differents elements constitutifs d'une chaine d'analyse pour souligner quelques unes des ameliorations apportees tant au detecteur, qui est toujours dans la grande majorite des cas, la camera a scintillations, qu'au system de traitement. On cite egalement quelques exemples de progres realises dans la methodologie. On presente ensuite des exemples d'application en cardiologie. On examine, notamment, les informations quantitatives fournies par les differentes methodes dont on dispose grace a la camera a scintillations et dans quelles conditions pratiques et cliniques elles sont a mettre en oeuvre. Ce sont la gamma-angio-cardiographie la gamma-cine-cardiographie, l'etude de la perfusion myocardique. On precise que ces differentes methodes permettent le calcul de la majorite des parametres d'interet pour les cardiologuesOriginal Title
Etudes dynamiques quantitatives au moyen de cameras a scintillations. Applications a la cardiologie
Primary Subject
Source
Kellershohn, C.; Raynaud, C. (eds.); CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Dept. de Biologie; p. 78-103; ISBN 2727200013;
; 1975; 17. French language symposium on nuclear medicine; Paris, France; 02 Jun 1975

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Measurement of regional calcium accretion in patients treated for Paget's disease and in paraplegics
Bergmann, P.; Schoutens, A.; Paternot, J.; Heilporn, E.
17. French language symposium on nuclear medicine. Paris, June 2-4, 19751975
17. French language symposium on nuclear medicine. Paris, June 2-4, 19751975
AbstractAbstract
[en] The measurement of regional bone accretion of calcium has proved its worth in the study of two localised bone disorders, Paget's disease and the bone complications of medullar lesions. Intraveinous injection of 47Ca is followed during 6 days of external measurements with the human whole-body counter and daily determinations of the serum specific activity. Assuming that the decay slope of the extra-osseous activity is parallel to that which follows the serum activity between two and six days, the activity fixed on the skeleton is calculated by zones. The experiment covers 15 normal subjects, 10 patients with Paget's disease, 10 paraplegics and 28 case of miscellaneous ailments
[fr]
Une mesure de l'accretion osseuse regionale du calcium a prouve son utilite dans l'etude de deux pathologies osseuses localisees, la maladie de Paget et les complications osseuses des lesions medullaires. L'injection intraveineuse de 47Ca est suivie pendant 6 jours de mesures externes au compteur humain total et de determinations quotidiennes de l'activite specifique serique. Supposant que la pente de decroissance de l'activite extraosseuse est parallele a celle qui suit l'activite serique entre deux et six jours, on calcule par region l'activite fixee sur le squelette. L'experience porte sur 15 sujets normaux, 10 pagetiques, 10 paraplegiques et 28 affections diversesOriginal Title
Mesure de l'accretion regionale du calcium chez des patients pagetiques traites et chez des paraplegiques
Primary Subject
Source
Kellershohn, C.; Raynaud, C. (eds.); CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Dept. de Biologie; p. 51-53; ISBN 2727200013;
; 1975; 17. French language symposium on nuclear medicine; Paris, France; 02 Jun 1975

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Buffe, D.; Rimbaut, C.; Rudant, C.
17. French language symposiun on nuclear medicine. Paris, June 2-4, 19751975
17. French language symposiun on nuclear medicine. Paris, June 2-4, 19751975
AbstractAbstract
[en] An attempt was made to find out whether bile could be responsible for false positives and for quantitative variations observed in the radioimmunoassay of α 1 foeto-protein. To this end a fixed amount of bile at different serum dilutions on the one hand, a variable quantity of bile at a given serum dilution on the other, were added to a positive (cord) serum and a negative (normal adult) serum. In the case of cord serum tested at 1/100, the value passes from 20000ng/ml without addition of bile to 60000, 300000 and 1300000ng/ml when tested at dilutions of 1/100, 1/1000 and 1/10000 respectively in the presence of the same quantity of bile. In the case of normal serum with a 6ng/ml content tested pure or diluted to 1/2, fractions of 110, 730 and 4500ng/ml respectively were found for 1/2, 1/5 and 1/10 dilutions with addition of a fixed amount of bile. The quantitative variations observed were dependent on the quantity of bile added: pure, diluted to 1/10, 1/100, 1/1000; they were large in the presence of pure or 1/10 diluted bile, almost non-existent with the same volume of bile diluted to 1/100 or 1/1000
[fr]
On a tente de verifier si la bile pouvait etre responsable des faux positifs, ainsi que des variations quantitatives observees dans le dosage radio-immunologique d'α1 foeto-proteine. Pour ce faire on a ajoute a un serum positif (serum de cordon) et a un serum negatif (serum adulte normal), d'une part, une quantite fixe de bile a differentes dilutions de serum, d'autre part, une quantite variable de bile a une meme dilution de serum. Dans le cas du serum de cordon teste au 1/100, le taux passe de 20000ng/ml sans adjonction de bile a 60000, 300000 et 1300000ng/ml quand il est teste dilue respectivement au 1/100, 1/1000 et 1/10000 en presence de la meme quantite de bile. Dans le cas de serum normal dont le taux est de 6ng/ml teste pur ou au 1/2, on a trouve respectivement des taux de 110, 730 et 4500ng/ml pour des dilutions au 1/2, 1/5 et 1/10, dans lesquelles on a ajoute une quantite fixe de bile. Les variations quantitatives observees etaient fonction de la quantite de bile ajoutee: bile pure, diluee au 1/10, 1/100, 1/1000; elles etaient importantes en presence de bile pure ou diluee au 1/10, quasiment inexistantes avec un meme volume de bile diluee au 1/100, au 1/1000Original Title
Une cause d'erreur dans le dosage radio-immunologique d'α1 foeto-proteine: la presence de bile dans le serum
Primary Subject
Source
Kellershohn, C.; Raynaud, C. (eds.); CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Dept. de Biologie; p. 236-237; ISBN 2727200013;
; 1975; 17. French language symposium on nuclear medicine; Paris, France; 02 Jun 1975

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Fonroget, J.; Roucayrol, J.C.; Perrin, J.; Belvaux, Y.; Paris-11 Univ., 91 - Orsay
17. French language symposiun on nuclear medicine. Paris, June 2-4, 19751975
17. French language symposiun on nuclear medicine. Paris, June 2-4, 19751975
AbstractAbstract
[en] Gammaholography, or coded opening gammagraphy, is a new gammagraphic method in which the standard collimators are replaced by one or more modulator screens placed between the detector and the radioactive object. The recording obtained is a coded image or incoherent hologram which contains three-dimensional information on the object and can be decoded analogically in a very short time. The formation of the image has been analyzed in the coding and optical decoding phases in the case of a single coding screen modulated according to a Fresnel zoned lattice. The analytical expression established for the modulation transfer function (MTF) of the system can be used to study, by computerized simulation, the influence of the number of zones on the quality of the image
[fr]
La gammaholographie ou gammagraphie par ouverture codee est une nouvelle methode de gammagraphie dans laquelle les collimateurs conventionnels sont remplaces par un ou plusieurs ecrans modulateurs interposes entre le detecteur et l'objet radioactif. L'image enregistree est une image codee ou hologramme incoherent, contenant une information tridimensionnelle sur l'objet et dont le decodage peut etre realise analogiquement en un temps tres court. On a analyse la formation de l'image dans les phases de codage et de decodage optique dans le cas d'un seul ecran codeur module selon un reseau zone de Fresnel. L'expression analytique que l'on a etablie de la fonction de transfert de modulation (FTM) du systeme, permet d'etudier par simulation sur ordinateur l'influence du nombre de zones sur la qualite de l'imageOriginal Title
Analyse de la formation de l'image par gammaholographie
Primary Subject
Source
Kellershohn, C.; Raynaud, C. (eds.); CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Dept. de Biologie; p. 215-218; ISBN 2727200013;
; 1975; 17. French language symposium on nuclear medicine; Paris, France; 02 Jun 1975

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Leonard, J.P.; Taymans, F.; Beckers, C.
17. French language symposium on nuclear medicine. Paris, June 2-4, 19751975
17. French language symposium on nuclear medicine. Paris, June 2-4, 19751975
AbstractAbstract
[en] A simple, specific, sufficiently sensitive and quantitative method is described, the purpose being to obtain a more accurate and reliable determination of antithyroid auto-antibodies and particularly antithyroglobulin. The principle of the sandwich type radioimmunological determination is used. The technique involves three sequential stages. Thyroglobulin is labelled with iodine 125, giving specific activities of about 100 to 530μCi per mcg thyroglobulin. The sensitivity of the method is found to depend closely on the specific activity of the radioactive thyroglobulin and the percentage of immunoreactive thyroglobulin persisting in the solution
[fr]
On decrit une methode simple, specifique, suffisamment sensible et quantitative, dans le but d'obtenir un dosage plus precis et plus fiable des auto-anticorps antithyroidiens et en premier lieu de l'anti-thyroglobuline. La methode utilise le principe du dosage radioimmunologique de type sandwich. La technique comporte trois etapes sequentielles. La thyroglobuline a ete marquee a l'iode 125. Des activites specifiques de l'ordre de 100 a 530 microCi par mcg de thyroglobuline ont ete obtenues. On constate que la sensibilite de la methode depend etroitement de l'activite specifique de la thyroglobuline radioactive et du pourcentage de thyroglobuline immunoreactive persistant dans la solutionOriginal Title
Dosage radio-immunologique de l'anticorps anti-thyroglobuline par une methode en phase solide
Primary Subject
Source
Kellershohn, C.; Raynaud, C. (eds.); CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Dept. de Biologie; p. 166-169; ISBN 2727200013;
; 1975; 17. French language symposium on nuclear medicine; Paris, France; 02 Jun 1975

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AbstractAbstract
[en] A conjugate was obtained by covalent bond coupling of penicilloyl groups to bovine serum albumine (BSA) previously labelled with iodine 125. The reaction takes place in alkaline solution without intervention of carbodiimide. By its immunoreactivity and specific activity this conjugate is a suitable tracer in radioimmunology. The sensitivity and specificity of the determination were analysed on standard curves
[fr]
On a obtenu un conjugue en couplant par liaison covalente des groupements penicilloyl a de la serum albumine bovine (BSA) prealablement marquee a l'iode-125. La reaction est realisee en milieu alcalin, sans intervention de carbodiimide. L'immunoreactivite et l'activite specifique de ce conjugue en font un traceur utilisable en radioimmunologie. On a analyse sur des courbes standard la sensibilite et la specificite du dosageOriginal Title
Utilisation d'un derive iode de la penicilline pour le dosage radioimmunologique des groupements penicilloyl dans les milieux biologiques
Primary Subject
Source
Kellershohn, C.; Raynaud, C. (eds.); CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Dept. de Biologie; p. 159-161; ISBN 2727200013;
; 1975; 17. French language symposium on nuclear medicine; Paris, France; 02 Jun 1975

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Manigault, L.; Sureau, B.; Wioland, M.; Perez, R.
17. French language symposium on nuclear medicine. Paris, June 2-4, 19751975
17. French language symposium on nuclear medicine. Paris, June 2-4, 19751975
AbstractAbstract
[en] On the assumption that isotopic examinations of the bone metabolism and especially the scintigraphic method could give valuable results in the observation of osteitis patients treated with antibiotics, four cases of this disease were selected and followed regularly every three or four months for at least a year. Several bone scintigraphs were carried out with a scintillation camera after intraveinous injection of technetium-labelled pyrophosphate and the hyperfixation variations of the osteitis centre are given as a function of time. It is shown that bone scintigraphy gives an exact picture of the dimensions and morphology of lesions caused by an osteitis centre and above all, if repeated, enables the development of the infected region to be estimated. It seems that the healing of osteitis can be judged from scintigraphic evidence. Scintigraphy may be considered as a means to check the efficiency of an antibiotic treatment
[fr]
On a suppose que les examens isotopiques du metabolisme osseux et en particulier la methode scintigraphique, pourraient donner des resultats precieux dans la surveillance des osteites traitees par antibiotiques. On a selectionne quatre malades porteurs de cette affection et on les a suivis de facon reguliere tous les trois a quatre mois pendant une periode au moins egale a un an. Plusieurs scintigraphies osseuses ont ete realisees. Elles ont ete faites a la camera a scintillation apres injection intraveineuse de pyrophosphate marque au technetium. On rapporte les variations de l'hyperfixation du foyer d'osteite en fonction du temps. On montre que la scintigraphie osseuse permet de connaitre avec exactitude les dimensions et la morphologie des lesions causees par un foyer d'osteite. Elle permet aussi et surtout, si elle est repetee, de juger de l'evolutivite du foyer infectieux. La guerison de l'osteite semble pouvoir etre evoquee a partir de la guerison scintigraphique. La scintigraphie apparait comme un moyen de controle de l'efficacite d'une antibiotherapieOriginal Title
Surveillance scintigraphique des osteites
Primary Subject
Source
Kellershohn, C.; Raynaud, C. (eds.); CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Dept. de Biologie; p. 75-77; ISBN 2727200013;
; 1975; 17. French language symposium on nuclear medicine; Paris, France; 02 Jun 1975

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BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BODY, CAMERAS, COUNTING TECHNIQUES, DIAGNOSTIC TECHNIQUES, DISEASES, HOURS LIVING RADIOISOTOPES, INTERMEDIATE MASS NUCLEI, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, MEDICINE, NUCLEAR MEDICINE, NUCLEI, ODD-EVEN NUCLEI, ORGANS, OXYGEN COMPOUNDS, PHOSPHORUS COMPOUNDS, RADIOISOTOPE SCANNING, RADIOISOTOPES, TECHNETIUM ISOTOPES, YEARS LIVING RADIOISOTOPES
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Piepsz, A.; Dobbeleir, A.; Erbsmann, F.
17. French language symposium on nuclear medicine. Paris, June 2-4, 19751975
17. French language symposium on nuclear medicine. Paris, June 2-4, 19751975
AbstractAbstract
[en] A new quantitative method to determine the separate kidney is described. This method is based on the use of the Tc-DTPA complex administered in a single intraveinous injection, a scintillation camera and continuous computerized data recording for 20 minutes at 20 sec. intervals. By definition the slope of the kidney radioactivity curve, divided by the corresponding plasma concentration, represents at each instant the glomerular clearance of the kidney. This only applies before the 3rd minute following the intraveinous tracer injection, when the filtered radioactivity has not yet left the kidney area. Between the 60th and 180th sec., 6 clearance values may be determined for each kidney. For each 20-sec. time interval the renal activity increase per minute is divided by the plasma concentration during the same interval and the average of these values is taken as the glomerular clearance figure. Some results have been analysed. The test could end 3 min. after the intraveinous injection. Continuation of the recording for 20 min. gives a complete dynamic picture of the kidney function
[fr]
On a presente une methode quantitative nouvelle pour la determination de la fonction separee des reins. Cette methode est basee sur l'utilisation du complexe Tc-DTPA, administre en d'une injection IV unique, d'une camera a scintillation et de l'enregistrement en continu des donnees a l'aide d'un ordinateur durant 20 minutes et a des intervalles de 20 sec. Par definition, la pente de la courbe de radioactivite renale, divisee par la concentration plasmatique correspondante represente a chaque instant la clearance glomerulaire du rein. Cela n'est valable qu'avant la 3e minute suivant l'injection IV du traceur, moment ou la radioactivite filtree n'a pas encore quitte l'aire renale. Entre 60 et 180 sec., 6 valeurs de clearance peuvent etre determinees pour chacun des reins. Pour chaque intervalle de temps de 20 sec., l'accroissement de l'activite renale par minute est divisee par la concentration plasmatique au cours du meme intervalle. La moyenne de ces valeurs est prise comme chiffre de clearance glomerulaire. On a analyse quelques resultats. Le test pourrait se terminer 3 min. apres l'injection IV. La poursuite de l'enregistrement durant 20 min. permet d'obtenir une epreuve dynamique renale completeOriginal Title
Determination de la clearance separee des reins a l'aide du complexe Tc-DTPA et de la camera a scintillation
Primary Subject
Source
Kellershohn, C.; Raynaud, C. (eds.); CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France). Dept. de Biologie; p. 140-144; ISBN 2727200013;
; 1975; 17. French language symposium on nuclear medicine; Paris, France; 02 Jun 1975

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AMINO ACIDS, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BODY, CAMERAS, CARBOXYLIC ACIDS, CHELATING AGENTS, CLEARANCE, COUNTING TECHNIQUES, DIAGNOSTIC TECHNIQUES, EXCRETION, HOURS LIVING RADIOISOTOPES, INTERMEDIATE MASS NUCLEI, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, MEDICINE, NUCLEAR MEDICINE, NUCLEI, ODD-EVEN NUCLEI, ORGANIC ACIDS, ORGANIC COMPOUNDS, ORGANS, RADIOISOTOPE SCANNING, RADIOISOTOPES, TECHNETIUM ISOTOPES, YEARS LIVING RADIOISOTOPES
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