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Procureur S, Morishima K, Kuno M, Manabe Y, Kitagawa N, Nishio A, Gomez H, Attié D, Sakakibara A, Hikata K, Moto M, Mandjavidze I, Magnier P, Lehuraux M, Benoit T, Calvet D, Coppolani X, Kebbiri M, Mas P, Helal H, Tayoubi M, Marini B, Serikoff N, Anwar H, Steiger V, Takasaki F, Fujii H, Satoh K, Kodama H, Hayashi K, Gable P, Guerriero E, Mouret JB, Elnady T, Elshayeb Y, Elkarmoty M. Precise characterization of a corridor-shaped structure in Khufu's Pyramid by observation of cosmic-ray muons. Nat Commun 2023; 14:1144. [PMID: 36864018 PMCID: PMC9981702 DOI: 10.1038/s41467-023-36351-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 01/26/2023] [Indexed: 03/04/2023] Open
Abstract
Khufu's Pyramid is one of the largest archaeological monument all over the world, which still holds many mysteries. In 2016 and 2017, the ScanPyramids team reported on several discoveries of previously unknown voids by cosmic-ray muon radiography that is a non-destructive technique ideal for the investigation of large-scale structures. Among these discoveries, a corridor-shaped structure has been observed behind the so-called Chevron zone on the North face, with a length of at least 5 meters. A dedicated study of this structure was thus necessary to better understand its function in relation with the enigmatic architectural role of this Chevron. Here we report on new measurements of excellent sensitivity obtained with nuclear emulsion films from Nagoya University and gaseous detectors from CEA, revealing a structure of about 9 m length with a transverse section of about 2.0 m by 2.0 m.
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Affiliation(s)
| | - Kunihiro Morishima
- Nagoya University, 1 Furo, Chikusa, Nagoya, Aichi, 464-8602, Japan. .,PRESTO, Japan Science and Technology Agency (JST), Saitama, 332-0012, Japan.
| | - Mitsuaki Kuno
- grid.27476.300000 0001 0943 978XNagoya University, 1 Furo, Chikusa, Nagoya, Aichi 464-8602 Japan
| | - Yuta Manabe
- grid.27476.300000 0001 0943 978XNagoya University, 1 Furo, Chikusa, Nagoya, Aichi 464-8602 Japan
| | - Nobuko Kitagawa
- grid.27476.300000 0001 0943 978XNagoya University, 1 Furo, Chikusa, Nagoya, Aichi 464-8602 Japan
| | - Akira Nishio
- grid.27476.300000 0001 0943 978XNagoya University, 1 Furo, Chikusa, Nagoya, Aichi 464-8602 Japan
| | - Hector Gomez
- grid.460789.40000 0004 4910 6535IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - David Attié
- grid.460789.40000 0004 4910 6535IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - Ami Sakakibara
- grid.27476.300000 0001 0943 978XNagoya University, 1 Furo, Chikusa, Nagoya, Aichi 464-8602 Japan
| | - Kotaro Hikata
- grid.27476.300000 0001 0943 978XNagoya University, 1 Furo, Chikusa, Nagoya, Aichi 464-8602 Japan
| | - Masaki Moto
- grid.27476.300000 0001 0943 978XNagoya University, 1 Furo, Chikusa, Nagoya, Aichi 464-8602 Japan
| | - Irakli Mandjavidze
- grid.460789.40000 0004 4910 6535IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - Patrick Magnier
- grid.460789.40000 0004 4910 6535IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - Marion Lehuraux
- grid.460789.40000 0004 4910 6535IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - Théophile Benoit
- grid.460789.40000 0004 4910 6535IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - Denis Calvet
- grid.460789.40000 0004 4910 6535IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - Xavier Coppolani
- grid.460789.40000 0004 4910 6535IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - Mariam Kebbiri
- grid.460789.40000 0004 4910 6535IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - Philippe Mas
- grid.460789.40000 0004 4910 6535IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - Hany Helal
- grid.7776.10000 0004 0639 9286Cairo University, Gamaa Street, 12613 Giza, Egypt ,HIP Institute, 50 rue de Rome, 75008 Paris, France
| | - Mehdi Tayoubi
- HIP Institute, 50 rue de Rome, 75008 Paris, France ,grid.451572.00000 0000 8719 117XDassault Systèmes, 10 Rue Marcel Dassault, 78140 Vélizy-Villacoublay, France
| | - Benoit Marini
- HIP Institute, 50 rue de Rome, 75008 Paris, France ,Whatever The Reality, 5 chemin de Picurey, 33520 Bruges, France
| | | | - Hamada Anwar
- grid.7776.10000 0004 0639 9286Cairo University, Gamaa Street, 12613 Giza, Egypt
| | | | - Fumihiko Takasaki
- grid.410794.f0000 0001 2155 959XHigh Energy Accelerator Research Organization (KEK), 1-1 oho, Tsukuba, Ibaraki 305-0801 Japan
| | - Hirofumi Fujii
- grid.410794.f0000 0001 2155 959XHigh Energy Accelerator Research Organization (KEK), 1-1 oho, Tsukuba, Ibaraki 305-0801 Japan
| | - Kotaro Satoh
- grid.410794.f0000 0001 2155 959XHigh Energy Accelerator Research Organization (KEK), 1-1 oho, Tsukuba, Ibaraki 305-0801 Japan
| | - Hideyo Kodama
- grid.410794.f0000 0001 2155 959XHigh Energy Accelerator Research Organization (KEK), 1-1 oho, Tsukuba, Ibaraki 305-0801 Japan
| | - Kohei Hayashi
- grid.410794.f0000 0001 2155 959XHigh Energy Accelerator Research Organization (KEK), 1-1 oho, Tsukuba, Ibaraki 305-0801 Japan
| | - Pierre Gable
- Emissive, 71 rue de Provence, 75009 Paris, France
| | | | - Jean-Baptiste Mouret
- grid.29172.3f0000 0001 2194 6418Université de Lorraine, CNRS, Inria, Nancy, F-54600 France
| | - Tamer Elnady
- grid.7269.a0000 0004 0621 1570Ain Shams University, Kasr el-Zaafaran, Abbasiya, Cairo, Egypt
| | - Yasser Elshayeb
- grid.7776.10000 0004 0639 9286Cairo University, Gamaa Street, 12613 Giza, Egypt
| | - Mohamed Elkarmoty
- grid.7776.10000 0004 0639 9286Cairo University, Gamaa Street, 12613 Giza, Egypt
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Prudhomme T, Benoit T, Adypagavane A, Malavaud B, Soulié M, Gamé X, Kamar N, Dariane C, Legendre C, Méjean A, Roumiguié M, Timsit M. Validation externe d’un modèle prédictif pour estimer la fonction rénale après prélèvement rénal de donneur vivant. Prog Urol 2020. [DOI: 10.1016/j.purol.2020.07.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Benoit T, Shreim S, Torna E, Montes A, Andrade J. Desired Skills, Attributes and Training Needs of Dietetic Preceptors: A Qualitative Study. J Acad Nutr Diet 2020. [DOI: 10.1016/j.jand.2020.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Prudhomme T, Benoit T, Roumiguié M, Broudeur L, Kervella D, Mesnard B, Sallusto F, Doumerc N, Binhazzaa M, Iborra F, Soulié M, Blancho G, Kamar N, Thuret R, Karam G, Gamé X, Branchereau J. Transplantation rénale de donneur vivant : comparaison des organisations chirurgicales séquentielles et simultanées. Prog Urol 2019. [DOI: 10.1016/j.purol.2019.08.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Prudhomme T, Roumiguié M, Benoit T, Lesourd M, Beauval J, Doumerc N, Sallusto F, Soulié M, Kamar N, Gamé X. Néphrectomie laparoscopique pour donneur vivant : comparaison de la vision tridimensionnelle et bidimensionnelle. Prog Urol 2019. [DOI: 10.1016/j.purol.2019.08.196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Pradere B, Peyronnet B, Khene Z, Delporte G, Manach Q, Moulin M, Rizk J, Brichart N, Beauval J, Benoit T, Upret M, Bex A, Bruyere F, Bensalah K. Résultats oncologiques des tumeurs kystiques du rein comparées aux tumeurs solides : étude multicentrique. Prog Urol 2018. [DOI: 10.1016/j.purol.2018.07.201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Sallusto F, Prudhomme T, Gamé X, Doumerc N, Beauval J, Roumiguie M, Laclergerie F, Labadens I, Danet C, Moreau C, Benoit T, Lagarde S, Delchier M, Huyghe E, Delaunay B, Thoulouzan M, Kamar N, Malavaud B, Soulie M, Rischmann P. Endoprothèse double j magnetic Black-star® en transplantation rénale : utilisation, étude comparative des coûts, et valorisation versus une endoprothèse double j standard. Prog Urol 2018. [DOI: 10.1016/j.purol.2018.07.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lavie C, Rollot F, Durand-Dubief F, Marignier R, Ionescu I, Casey R, Moreau T, Tourniaire P, Hutchinson M, D’Hooghe MB, Laplaud DA, Clavelou P, De Sèze J, Debouverie M, Brassat D, Pelletier J, Lebrun-Frenay C, Le Page E, Castelnovo G, Berger E, Hautecoeur P, Heinzlef O, Durelli L, Clerico M, Trojano M, Patti F, Vukusic S, Alpérovitch A, Carton H, d’Hooghe M, Hommes O, Hutchinson M, Adeleine P, Biron A, Cortinovis-Tourniaire P, Grimaud J, Hours M, Moreau T, Vukusic S, Confavreux C, Chauplannaz G, Confavreux C, Cortinovis-Tourniaire P, Grimaud J, Latombe D, Moreau T, Clanet M, Lau G, Rumbach L, Goas J, Rouhart F, Mazingue A, Roullet E, Madigand M, Hautecoeur P, Brunet P, Edan G, Allaire C, Riffault G, Leche J, Benoit T, Simonin C, Ziegler F, Baron J, Rivrain Y, Dumas R, Loche D, Bourrin J, Huttin B, Delisse B, Gibert I, Boulay C, Verceletto M, Durand G, Bonneviot G, Gil R, Hedreville M, Belair C, Poitevin R, Devoize J, Wyremblewski P, Delestre F, Setiey A, Comi G, Filippi M, Ghezzi A, Martinelli V, Rossi P, Zaffaroni M, Tola M, Amato M, Fioretti C, Meucci G, Inglese M, Mancardi G, Gambi D, Thomas A, Cavazzuti M, Citterio A, Heltberg A, Hansen H, Fernandez O, Romero F, Arbizu T, Hernandez J, De Andres de Frutos C, Geffner Sclarky D, Aladro Benito Y, Reyes Yanes P, Aguilar M, Burguera J, Yaya R, Bonakim Dib W, Arzua-Mouronte D, d’Hooghe M, Sindic C, Carton H, Medaer R, Roose H, Geens K, Guillaume D, Van Zandycke M, Janssens J, Cornette M, Mol L, Weilbach F, Flachenecker P, Hartung H, Haas J, Tendolkar I, Sindrn E, Kölmel H, Reichel D, Rauch M, Preuss S, Poser S, Mauch E, Strausser-Fuchs S, Kolleger H, Hawkins S, Howell S, Rees J, Thompson A, Johnson M, Boggild M, Gregory R, Bates D, Bone I, Hutchinson M, Polman C, Frequin S, Jongen P, Hommes O, Correia de Sa J, Rio M, Huber S, Lechner-Scott J, Kappos L, Ionescu I, Cornu C, Confavreux C, Vukusic S, El-Etr M, Baulieu E, El-Etr M, Schumacher M, Ionescu I, Confavreux C, Cornu C, Vukusic S, Hartung H, Miller D, Hutchinson M, Pugeat M, d’Archangues C, Conard J, Ménard J, Sitruk-Ware R, Pelissier C, Dat S, Belaïsch-Allard J, Athéa N, Büschsenschutz D, Lyon-Caen O, Gonsette R, Boissel J, Ffrench P, Durand-Dubief F, Cotton F, Pachai C, Bracoud L, Vukusic S, Ionescu I, Androdias G, Marignier R, Chauplannaz G, Laplaud D, Wiertlewski S, Lanctin-Garcia C, Moreau T, Couvreur G, Madinier G, Clavelou P, Taithe F, Aufauvre D, Guy N, Ferrier A, De Sèze J, Collongues N, Debouverie M, Viala F, Brassat D, Gerdelat-Mas A, Henry P, Pelletier J, Rico-Lamy A, Lebrun-Frenay C, Lepage E, Deburghraeve V, Edan G, Castelnovo G, Berger E, Hautecoeur P, Blondiau M, Heinzlef O, Coustans M, Clerc C, Rieu L, Lauxerois M, Hinzelin G, Ouallet J, Minier D, Vion P, Gromaire-Fayolle N, Derache N, Thouvenot E, Sallansonnet-Froment M, Tourniaire P, Toureille L, Borgel F, Stankoff B, Grimaud J, Moroianu C, Guennoc A, Tournier-Gervason C, Peysson S, Trojano M, Patti F, D’Amico E, Motti L, Zaffaroni M, Durelli L, Tavella A. Neuraxial analgesia is not associated with an increased risk of post-partum relapses in MS. Mult Scler 2018; 25:591-600. [DOI: 10.1177/1352458518763080] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Background: Obstetrical analgesia remains a matter of controversy because of the fear of neurotoxicity of local anesthetics on demyelinated fibers or their potential relationship with subsequent relapses. Objective: To assess the impact of neuraxial analgesia on the risk of relapse during the first 3 months post-partum, with a focus on women who experienced relapses during pregnancy. Methods: We analyzed data of women followed-up prospectively during their pregnancies and at least 3 months post-partum, collected in the Pregnancy in Multiple Sclerosis (PRIMS) and Prevention of Post-Partum Relapses with Progestin and Estradiol in Multiple Sclerosis (POPARTMUS) studies between 1992–1995 and 2005–2012, respectively. The association of neuraxial analgesia with the occurrence of a post-partum relapse was estimated by logistic regression analysis. Results: A total of 389 women were included, 215 from PRIMS and 174 from POPARTMUS. In total, 156 women (40%) had neuraxial analgesia. Overall, 24% experienced a relapse during pregnancy and 25% in the 3 months post-partum. Women with a pregnancy relapse were more likely to have a post-partum relapse (odds ratio (OR) = 1.83, p = 0.02), independently of the use of neuraxial analgesia. There was no association between neuraxial analgesia and post-partum relapse (OR = 1.08, p = 0.78). Conclusion: Neuraxial analgesia was not associated with an increased risk of post-partum relapses, whatever multiple sclerosis (MS) activity during pregnancy.
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Affiliation(s)
- Caroline Lavie
- Service de Neurologie A, Hôpital Pierre Wertheimer,
Hospices Civils de Lyon, Lyon, France
| | - Fabien Rollot
- Observatoire Français de la Sclérose en Plaques (OFSEP),
Lyon, France
| | | | - Romain Marignier
- Service de Neurologie A, Hôpital Pierre Wertheimer,
Hospices Civils de Lyon, Lyon, France/Centre de Recherche en Neurosciences de Lyon,
INSERM U1028, CNRS UMR5292, Equipe Neuro-Oncologie et Neuro-Inflammation, Lyon, France;
Université de Lyon 1, Lyon, France
| | - Iuliana Ionescu
- Service de Neurologie A, Hôpital Pierre Wertheimer,
Hospices Civils de Lyon, Lyon, France
| | - Romain Casey
- Observatoire Français de la Sclérose en Plaques (OFSEP),
Lyon, France
| | - Thibault Moreau
- Department of Neurology, EA4184, University Hospital of
Dijon, Dijon, France
| | | | - Michael Hutchinson
- School of Medicine and Medical Science, University College
Dublin, Dublin, Ireland/Department of Neurology, St Vincent’s University Hospital,
Dublin, Ireland
| | - Marie Béatrice D’Hooghe
- National MS Center Melsbroek, Melsbroek, Belgium; Center
for Neurosciences, Vrije Universiteit Brussel (VUB), Brussel, Belgium
| | - David-Axel Laplaud
- Service de Neurologie, CHU de Nantes, CIC015 INSERM,
Nantes, France/INSERM UMR1064, Nantes, France
| | - Pierre Clavelou
- Service de Neurologie, CHU de Clermont-Ferrand,
Clermont-Ferrand, France/INSERM UMR1107, Clermont Université, Université d’Auvergne,
Neuro-Dol, Clermont-Ferrand, France
| | - Jérôme De Sèze
- Department of Neurology, Clinical Investigation Center
INSERM 1434, Hôpitaux Universitaires de Strasbourg, FMTS INSERM 1119, Strasbourg,
France
| | - Marc Debouverie
- EA 4360 APEMAC, University of Lorraine, Nancy,
France/Department of Neurology, Nancy University Hospital, Nancy, France
| | - David Brassat
- Pôle Neurosciences, CHU Toulouse Purpan, Toulouse,
France/INSERM U1043, CNRS UMR 5282, Université Toulouse III, Toulouse, France
| | - Jean Pelletier
- Service de Neurologie, Hôpital de la Timone, Pôle de
Neurosciences Cliniques, AP-HM, Aix-Marseille Université, Marseille, France/CNRS,
Aix-Marseille Université, CRMBM UMR7339, Marseille, France
| | | | - Emmanuelle Le Page
- Clinical Neuroscience Centre, CIC-P 1414 INSERM, Rennes
University Hospital, Rennes, France
| | | | - Eric Berger
- Department of Neurology, CHU Besançon, Besançon,
France
| | - Patrick Hautecoeur
- Service de Neurologie, Groupement des Hôpitaux de
l’Institut Catholique de Lille, Lille, France
| | - Olivier Heinzlef
- Department of Neurology, Hôpital CHI de
Poissy/Saint-Germain-en-Laye, Paris, France
| | - Luca Durelli
- Division of Neurology, Department of Clinical and
Biological Sciences, University of Torino, San Luigi Gonzaga University Hospital,
Orbassano, Italy
| | - Marinella Clerico
- Division of Neurology, Department of Clinical and
Biological Sciences, University of Torino, San Luigi Gonzaga University Hospital,
Orbassano, Italy
| | - Maria Trojano
- Department of Basic Medical Sciences, Neuroscience and
Sense Organs, University of Bari Aldo Moro, Bari, Italy
| | - Francesco Patti
- Department of Medical and Surgical Sciences, and Advanced
Technologies, G.F. Ingrassia, Multiple Sclerosis Center, University of Catania, Catania,
Italy
| | - Sandra Vukusic
- Service de Neurologie A, Hôpital Pierre Wertheimer,
Hospices Civils de Lyon, Lyon, France/Observatoire Français de la Sclérose en Plaques
(OFSEP), Lyon, France/Centre de Recherche en Neurosciences de Lyon, INSERM U1028, CNRS
UMR5292, Equipe Neuro-Oncologie et Neuro-Inflammation, Lyon, France/Université de Lyon
1, Lyon, France
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Reix B, Bernhard JC, Patard JJ, Bigot P, Villers A, Suer E, Vuong N, Verhoest G, Alimi Q, Beauval JB, Benoit T, Nouhaud FX, Lenormand C, Hamidi N, Cai J, Eto M, Larre S, El Bakhri A, Ploussard G, Hung A, Koutlidis N, Schneider A, Carrouget J, Droupy S, Marchal S, Doerfler A, Seddik S, Matsugasumi T, Orsoni X, Descazeaud A, Pfister C, Bensalah K, Soulie M, Gill I, Flamand V. Overall survival and oncological outcomes after partial nephrectomy and radical nephrectomy for cT2a renal tumors: A collaborative international study from the French kidney cancer research network UroCCR. Prog Urol 2018; 28:146-155. [DOI: 10.1016/j.purol.2017.12.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 11/12/2017] [Accepted: 12/07/2017] [Indexed: 01/20/2023]
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Benoit T, Gamé X, Nicolas D, Roumiguié M, Beauval JB, Kamar N, Rischmann P, Malavaud B, Soulié M, Thuret R, Sallusto F. Comparaison de la procédure simultanée versus séquentielle pour les séquences prélèvement-transplantation rénale issus de donneur vivant. Prog Urol 2017. [DOI: 10.1016/j.purol.2017.07.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Benoit T, Valéra M, Arnal J, Soulié M, Boudou F, Buscato M, Raymond-letron I, Game X. Effet de l’estétrol sur la structure et la fonction de vagins murins. Prog Urol 2016. [DOI: 10.1016/j.purol.2016.07.186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Pradere B, Peyronnet B, Manach Q, Delporte G, Khene Z, Moulin M, Benoit T, Cormier L, Rizk J, Brichart N, Beauval J, Méjean A, Bex A, Roupret M, Bruyère F, Bensalah K. Néphrectomie partielle ouverte vs. robot assistée pour tumeurs kystiques : impact de la rupture de kyste peropératoire et résultats oncologiques. Prog Urol 2016. [DOI: 10.1016/j.purol.2016.07.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Pradere B, Peyronnet B, Delporte G, Manach Q, Khene Z, Moulin M, Cormier L, Benoit T, Brichart N, Rizk J, Beauval J, Méjean A, Bex A, Roupret M, Bensalah K, Bruyère F. Résultats périopératoires des voies d’abord ouverte et robot assistée dans les néphrectomies partielles pour tumeurs kystiques : étude multicentrique internationale. Prog Urol 2016. [DOI: 10.1016/j.purol.2016.07.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Beauval J, Roumiguié M, Benoit T, Peyronnet B, Verhoest G, Brierre T, Thoulouzan M, Rischmann P, Soulié M, Bensalah K, Doumerc N. Évolution de la néphrectomie au profit de la néphrectomie partielle robot-assistée au cours du temps : étude bicentrique. Prog Urol 2015; 25:820. [DOI: 10.1016/j.purol.2015.08.210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Peyronnet B, Vaessen C, Grassano Y, Benoit T, Carrouget J, Fardoun T, Masson-lecomte A, Khene Z, Pradère B, Girwec A, Ruggiero M, Beauval J, Nouhaud F, Brichart N, Baumert H, Bigot P, Droupy S, Bruyère F, De la taille A, Doumerc N, Bernhard J, Roupret M, Mejean A, Bensalah K. Comparaison de 1800 néphrectomies partielles ouvertes et robot-assistées pour tumeur rénale unique. Prog Urol 2015; 25:822. [DOI: 10.1016/j.purol.2015.08.212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Benoit T, Doumerc N, Mathieu R, Sallusto F, Beauval J, Malavaud B, Soulié M, Rischmann P, Kamar N, Game X. Résultats de la néphrectomie laparoscopique pour don de rein à partir d’une série de plus de 200 patients. Prog Urol 2015; 25:723. [DOI: 10.1016/j.purol.2015.08.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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17
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Pradère B, Benoit T, May A, Peyronnet B, Sallusto F, Faivre d’Arcier B, Boutin J, Doumerc N, Rischmann P, Soulié M, Game X, Bruyère F. Prélèvement rénal pour don de rein : étude comparative de la chirurgie laparoscopique et robot-assistée. Prog Urol 2015; 25:723-4. [DOI: 10.1016/j.purol.2015.08.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Benoit T, Peyronnet B, Roumiguié M, Doumerc N, Rischmann P, Malavaud B, Verhoest G, Vaessen C, Bensalah K, Roupret M, Soulié M, Beauval J. Facteurs prédictifs de l’accomplissement du Trifecta lors d’une néphrectomie partielle cœlioscopique robot-assistée : résultats d’une étude multicentrique rétrospective. Prog Urol 2015; 25:823-4. [DOI: 10.1016/j.purol.2015.08.215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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19
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Bernhard J, Patard J, Bigot P, Suer E, Vuong N, Verhoest G, Alimi Q, Flamand V, Reix B, Beauval J, Benoit T, Nouhaud F, Lenormand C, Hamidi N, Eto M, Larre S, El bakri A, Baco E, Ploussard G, Koutlidis N, Schneider A, Roupret M, Leon P, Carrouget J, Droupy S, Marchal S. Cancer du rein cliniquement localisé : quels sont les facteurs prédictifs du risque d’upstaging pathologique pT3a par invasion de la graisse ? Prog Urol 2015; 25:800. [DOI: 10.1016/j.purol.2015.08.169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Chebbi A, Benoit T, Giwerc A, Roumiguié M, Soulie M, Pfister C, Beauval J, Nouhaud F. Résultats de la néphrectomie partielle pour les tumeurs de plus 7cm : comparaison avec la néphrectomie élargie. Prog Urol 2015; 25:825. [DOI: 10.1016/j.purol.2015.08.217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Benoit T, Sallusto F, Roumiguie M, Beauval J, Rischmann P, Malavaud B, Soulie M, Game X, Doumerc N. Prélèvement rénal laparoscopique pour don de rein : une technique opératoire standardisée permettant une optimisation de la durée d’ischémie chaude. Prog Urol 2014; 24:898. [DOI: 10.1016/j.purol.2014.09.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Peyronnet B, Fardoun T, Khene Z, Roumiguie M, Benoit T, Beauval J, Verhoest G, Doumerc N, Bensalah K. Comparaison des voies ouvertes et robot-assistée pour la néphrectomie partielle pour tumeurs très complexes (RENAL Score≥10). Prog Urol 2014; 24:823. [DOI: 10.1016/j.purol.2014.08.089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Benoit T, Bellec L, Merigot De Treigny O, Piéchaud J, Beauval J, Rollin G, Rouvellat P, Delaunay B, Sallusto F, Doumerc N, Thoulouzan M, Gamé X, Malavaud B, Soulié M, Rischmann P, Huyghe E. Néphrectomie partielle pour tumeur rénale cT2 et cT1B : comparaison des résultats carcinologiques et de la morbidité. Prog Urol 2013. [DOI: 10.1016/j.purol.2013.08.204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Alkhalil A, Rekik O, Nahum L, Elzière C, Benoit T, Melki E, Corabianu O. Vol long courrier et risque d’accident vasculaire cérébral ischémique. Rev Neurol (Paris) 2013. [DOI: 10.1016/j.neurol.2013.01.175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Bulman C, Hanlon-Dearman A, Benoit T. Defining the Neurodevelopmental Profile of Children with Prenatal Solvent Exposure. Paediatr Child Health 2012. [DOI: 10.1093/pch/17.suppl_a.20a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Shi H, Wen J, LI Z, Elsayed M, Kamal K, LI Z, Wen J, Shi H, El Shal A, Youssef D, Caubet C, Lacroix C, Benjamin B, Bandin F, Bascands JL, Monsarrat B, Decramer S, Schanstra J, Laetitia DB, Ulinski T, Aoun B, Ozdemir K, Dincel N, Sozeri B, Mir S, Dincel N, Berdeli A, Mir S, Akyigit F, Mizerska-Wasiak M, Panczyk-Tomaszewska M, Szymanik-Grzelak H, Roszkowska-Blaim M, Jamin A, Dehoux L, Monteiro RC, Deschenes G, Bouts A, Davin JC, Dorresteijn E, Schreuder M, Lilien M, Oosterveld M, Kramer S, Gruppen M, Pintos-Morell G, Ramaswami U, Parini R, Rohrbach M, Kalkum G, Beck M, Carter M, Antwi S, Callegari J, Kotanko P, Levin NW, Rumjon A, Macdougall IC, Turner C, Booth CJ, Goldsmith D, Sinha MD, Camilla R, Camilla R, Loiacono E, Donadio ME, Conrieri M, Bianciotto M, Bosetti FM, Peruzzi L, Conti G, Bitto A, Amore A, Coppo R, Mizerska-Wasiak M, Roszkowska-Blaim M, Maldyk J, Chou HH, Chiou YY, Bochniewska V, Jobs K, Jung A, Fallahzadeh Abarghooei MH, Zare J, Sedighi Goorabi V, Derakhshan A, Basiratnia M, Fallahzadeh Abarghooei MA, Hosseini Al-Hashemi G, Fallahzadeh Abarghooei F, Kluska-Jozwiak A, Soltysiak J, Lipkowska K, Silska M, Fichna P, Skowronska B, Stankiewicz W, Ostalska-Nowicka D, Zachwieja J, Girisgen L, Sonmez F, Yenisey C, Kis E, Cseprekal O, Kerti A, Szabo A, Salvi P, Benetos A, Tulassay T, Reusz G, Makulska I, Szczepanska M, Drozdz D, Zwolnska D, Sozeri B, Berdeli A, Mir S, Tolstova E, Anis L, Ulinski T, Alber B, Edouard B, Gerard C, Seni K, Dunia Julienne Hadiza T, Christian S, Benoit T, Francois B, Adama L, Rosenberg A, Munro J, Murray K, Wainstein B, Ziegler J, Singh-Grewal D, Boros C, Adib N, Elliot E, Fahy R, Mackie F, Kainer G, Polak-Jonkisz D, Zwolinska D, Laszki-Szczachor K, Zwolinska D, Janocha A, Rusiecki L, Sobieszczanska M, Garzotto F, Ricci Z, Clementi A, Cena R, Kim JC, Zanella M, Ronco C, Polak-Jonkisz D, Zwolinska D, Purzyc L, Zwolinska D, Makulska I, Szczepanska M, Peco-Antic A, Kotur-Stevuljevic J, Paripovic D, Scekic G, Milosevski-Lomic G, Bogicevic D, Spasojevic-Dimitrijeva B, Hassan R, El-Husseini A, Sobh M, Ghoneim M, Harambat J, Bonthuis M, Van Stralen KJ, Ariceta G, Battelino N, Jahnukainen T, Sandes AR, Combe C, Jager KJ, Verrina E, Schaefer F, Espindola R, Bacchetta J, Cochat P, Stefanis C, Leroy S, Leroy S, Fernandez-Lopez A, Nikfar R, Romanello C, Bouissou F, Gervaix A, Gurgoze M, Bressan S, Smolkin V, Tuerlinkx D, Stefanidis C, Vaos G, Leblond P, Gungor F, Gendrel D, Chalumeau M, Rumjon A, Macdougall IC, Turner C, Rawlins D, Booth CJ, Simpson JM, Sinha MD, Arnaud G, Arnaud G, Anne M, Stephanie T, Flavio B, Veronique FB, Stephane D, Mumford L, Marks S, Ahmad N, Maxwell H, Tizard J, Vidal E, Amigoni A, Varagnolo M, Benetti E, Ghirardo G, Brugnolaro V, Murer L, Aoun B, Christine G, Alber B, Ulinski T, Aoun B, Decramer S, Bandin F, Ulinski T, Degi A, Degi A, Kerti A, Kis E, Cseprekal O, Szabo AJ, Reusz GS, Ghirardo G, Vidoni A, Vidal E, Benetti E, Ramondo G, Miotto D, Murer L. Paediatric nephrology. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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27
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Benoit T, Bowes C, Bowman N, Cantin D, Chudley A, Crolly D, Livingston A, Longstaffe S, Marles S, Miller C, Millar M, Penko M, Prasad C, Riguidel J, Wincott L. Telemedicine diagnosis for fetal alcohol syndrome - The Manitoba experience. Paediatr Child Health 2002; 7:147-51. [PMID: 20046287 PMCID: PMC2794808 DOI: 10.1093/pch/7.3.147] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The diagnosis of fetal alcohol syndrome has been possible, with increasing precision, since the original descriptions in the 1970s. Multidisciplinary diagnostic approaches have been recognized as most appropriate, although they are often not available. Telemedicine has been used in Canada over the same time period for a variety of diagnositc applications.Since 1999, funding by the Manitoba government has allowed the consolidation of services for children with prenatal alcohol exposure in Manitoba, and has allowed the development of a format for diagnosis using telemedicine.This paper describes the authors' experience with the above and offers observations that may be helpful to other programs that are focused on developing this format for the diagnosis of fetal alcohol syndrome.
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Affiliation(s)
- T Benoit
- Department of Pediatrics, University of Manitoba, Winnipeg, Manitoba
| | - C Bowes
- Department of Pediatrics, University of Manitoba, Winnipeg, Manitoba
| | - N Bowman
- Department of Pediatrics, University of Manitoba, Winnipeg, Manitoba
| | - D Cantin
- Department of Pediatrics, University of Manitoba, Winnipeg, Manitoba
| | - A Chudley
- Department of Pediatrics, University of Manitoba, Winnipeg, Manitoba
| | - D Crolly
- Department of Pediatrics, University of Manitoba, Winnipeg, Manitoba
| | - A Livingston
- Department of Pediatrics, University of Manitoba, Winnipeg, Manitoba
| | - S Longstaffe
- Department of Pediatrics, University of Manitoba, Winnipeg, Manitoba
| | - S Marles
- Department of Pediatrics, University of Manitoba, Winnipeg, Manitoba
| | - C Miller
- Department of Pediatrics, University of Manitoba, Winnipeg, Manitoba
| | - M Millar
- Department of Pediatrics, University of Manitoba, Winnipeg, Manitoba
| | - M Penko
- Department of Pediatrics, University of Manitoba, Winnipeg, Manitoba
| | - C Prasad
- Department of Pediatrics, University of Manitoba, Winnipeg, Manitoba
| | - J Riguidel
- Department of Pediatrics, University of Manitoba, Winnipeg, Manitoba
| | - L Wincott
- Department of Pediatrics, University of Manitoba, Winnipeg, Manitoba
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Lancellotti P, Benoit T, Rigo P, Pierard LA. Dobutamine stress echocardiography versus quantitative technetium-99m sestamibi SPECT for detecting residual stenosis and multivessel disease after myocardial infarction. Heart 2001; 86:510-5. [PMID: 11602542 PMCID: PMC1729965 DOI: 10.1136/heart.86.5.510] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE To compare the relative accuracy of dobutamine stress echocardiography (DSE) and quantitative technetium-99m sestamibi single photon emission computed tomography (mibi SPECT) for detecting infarct related artery stenosis and multivessel disease early after acute myocardial infarction. DESIGN Prospective study. SETTING University hospital. METHODS 75 patients underwent simultaneous DSE and mibi SPECT at (mean (SD)) 5 (2) days after a first acute myocardial infarct. Quantitative coronary angiography was performed in all patients after imaging studies. RESULTS Significant stenosis (> 50%) of the infarct related artery was detected in 69 patients. Residual ischaemia was identified by DSE in 55 patients and by quantitative mibi SPECT in 49. The sensitivity of DSE and mibi SPECT for detecting significant infarct related artery stenosis was 78% and 70%, respectively, with a specificity of 83% for both tests. The combination of DSE and mibi SPECT did not change the specificity (83%) but increased the sensitivity to 94%. Mibi SPECT was more sensitive than DSE for detecting mild stenosis (73% v 9%; p = 0.008). The sensitivity of DSE for detecting moderate or severe stenosis was greater than mibi SPECT (97% v 74%; p = 0.007). Wall motion abnormalities with DSE and transient perfusion defects with mibi SPECT outside the infarction zone were sensitive (80% v 67%; NS) and highly specific (95% v 93%; NS) for multivessel disease. CONCLUSIONS DSE and mibi SPECT have equivalent accuracy for detecting residual infarct related artery stenosis of >/= 50% and multivessel disease early after acute myocardial infarction. DSE is more predictive of moderate or severe infarct related artery stenosis. Combined imaging only improves the detection of mild stenosis.
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Affiliation(s)
- P Lancellotti
- Division of Cardiology University Hospital of Liège, B-4000 Liège, Belgium
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29
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Rigo P, Benoit T. Myocardial ischaemia. Clin Nucl Med 1998. [DOI: 10.1007/978-1-4899-3356-0_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Abstract
Myocardial dyssynergy does not necessarily indicate myocardial necrosis in patients with coronary artery disease. The differentiation between viable and non-viable tissue is of great clinical importance in order to make the most appropriate clinical decision in the individual patient. Several techniques are used to assess myocardial viability. Nuclear medicine gives reliable information on regional perfusion, metabolism and cell membrane integrity, while echocardiography provides real time visualization of myocardial thickening in basal conditions and continuously during pharmacological interventions. The presence or absence of contractile reserve in akinetic regions can be evaluated by pharmacological stress echocardiography. This article presents the semiology of myocardial viability as characterized by these different methods and reviews their relative value in different clinical settings.
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Affiliation(s)
- L A Piérard
- Department of Cardiology, University Hospital, Liège, Belgium
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31
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Van Damme H, Piérard L, Gillain D, Benoit T, Rigo P, Limet R. Cardiac risk assessment before vascular surgery: a prospective study comparing clinical evaluation, dobutamine stress echocardiography, and dobutamine Tc-99m sestamibi tomoscintigraphy. Cardiovasc Surg 1997; 5:54-64. [PMID: 9158124 DOI: 10.1016/s0967-2109(96)00089-0] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Preoperative evaluation for cardiac risk assessment before peripheral vascular surgery remains controversial. Between January and June 1994, a prospective open study was carried out in 156 patients scheduled for elective vascular procedures (63 carotid endarterectomies, 34 abdominal aortic aneurysms, 29 aortoiliac and 30 infrainguinal reconstructions) to compare the ability of clinical data, dobutamine stress echocardiography, and dobutamine Tc-99m sestamibi tomoscintigraphy to predict postoperative cardiac events. Pharmacological stress testing consisted of incremental dobutamine infusion (+/-1 mg atropine to achieve 85% of age-predicted maximal heart rate, with continuous echocardiographic monitoring, and injection of Tc-99m sestamibi after dobutamine infusion). Dobutamine echocardiography was abnormal in 36 patients (worsening resting wall motion abnormality in 11; new induced wall motion abnormality in 25). Dobutamine Tc-99m sestamibi tomoscintigraphy revealed a reversible perfusion defect in 34 patients, indicating the presence of myocardial ischaemia. As a result, eight patients underwent myocardial revascularization (n = 5) or the proposed operation was cancelled (n = 3). In the remaining 142 vascular procedures, there were eight (5.6%) adverse cardiac events: three myocardial infarctions (two fatal), three prolonged myocardial ischaemia, one acute congestive heart failure and one sustained ventricular arrhythmia in the post operative period. Univariate analysis selected unstable angina (relative risk (RR) 11.6), previous congestive heart failure (RR 6.4), Detsky's score of > or = 15 (RR 3.0), positive dobutamine stress echocardiography (RR 3.7), and positive dobutamine tomoscintigraphy (RR 7.4) as significant predictors of postoperative cardiac events. In patients without clinical markers of coronary artery disease (n = 66), non-invasive cardiac testing did not predict cardiac complications (n = 2; one prolonged myocardial ischaemia; one infarction). In the subset of 76 patients with definite clinical or electrocardiographic evidence of ischaemic heart disease, dobutamine stress testing provided additional information, and optimized risk stratification: five of six patients who suffered a cardiac complication had a pathologic dobutamine stress test. Furthermore, a negative dobutamine stress test was characterized by a high negative predictive value (0.96 for echocardiography; 0.97 for tomoscintigraphy). The study further demonstrated that the cardiac response (ischaemic versus non-ischaemic) to dobutamine stress was concordantly classified by echocardiographic and tomoscintigraphic techniques in 96% of cases. It is concluded that complementary non-invasive cardiac stress testing by dobutamine is indicated only in patients with clinically apparent coronary artery disease.
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Affiliation(s)
- H Van Damme
- Department of Cardiovascular Surgery, University Hospital of Liège, Belgium
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Rigo P, Paulus P, Kaschten BJ, Hustinx R, Bury T, Jerusalem G, Benoit T, Foidart-Willems J. Oncological applications of positron emission tomography with fluorine-18 fluorodeoxyglucose. Eur J Nucl Med 1996; 23:1641-74. [PMID: 8929320 DOI: 10.1007/bf01249629] [Citation(s) in RCA: 299] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Positron emission tomography (PET) is now primarily used in oncological indication owing to the successful application of fluorine-18 fluorodeoxyglucose (FDG) in an increasing number of clinical indications at different stages of diagnosis, and for staging and follow-up. This review first considers the biological characteristics of FDG and then discusses methodological considerations regarding its use. Clinical indications are considered, and the results achieved in respect of various organs and tumour types are reviewed in depth. The review concludes with a brief consideration of the ways in which clinical PET might be improved.
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Affiliation(s)
- P Rigo
- Division of Nuclear Medicine, University Hospital, Sart Tilman, Liege, Belgium
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Benoit T, Vivegnis D, Foulon J, Rigo P. Quantitative evaluation of myocardial single-photon emission tomographic imaging: application to the measurement of perfusion defect size and severity. Eur J Nucl Med 1996; 23:1603-12. [PMID: 8929314 DOI: 10.1007/bf01249623] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A new method is described for precise quantitative analysis of the relative three-dimensional distribution of myocardial tracers. The system uses a 360 degrees elliptical sampling of radial slices to create activity profiles. These are then positioned onto a common centre at the same angular coordinates as the corresponding radial slice reconstruction planes to generate a two-dimensional polar summary display. Abnormal distribution is then identified by automatic comparison of the patient polar map with the threshold of a normal database defined on a pixel by pixel basis as the normal mean -2.5 SD. Our stress and rest databases currently comprise 34 and 24 studies for sestamibi and tetrofosmin respectively. The present method differs from currently available software in two major respects. First, radial slices are used rather than short-axis slices to minimize operator intervention and to allow quantitative evaluation of the left ventricle volume independent of the heart size and without truncation, in particular near the apex and at the base. This sampling scheme also results in a more homogeneous and sampling-independent partial volume effect. Secondly, quantitative analysis is improved by calculating perfusion defect severity, extent and size in a precise manner. Severity is evaluated relative to a standardized background measurement and to the mean normal value rather than to the threshold value. This parameter was underestimated up to a defect extent of 32 cm2 in our phantom studies. Calculation of defect extent takes into account the surface distortion resulting from planar projection by using pixel by pixel weighted factors but it is otherwise overestimated as a result of the limited resolution of the imaging system. Integrating defect severity and extent, our hypoperfusion index appeared to accurately estimate the true defect size in our phantom model (r=0.993). The reproducibility of analysis was 6.24% in phantom studies and 3.10% in patient studies including repeated acquisitions. Applied to a well-documented population of 80 patients, this method resulted in an 86% sensitivity and a 78% specificity for overall coronary artery disease detection with reference to the angiographic data.
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Affiliation(s)
- T Benoit
- Division of Nuclear Medicine, C.H.U. Sart Tilman, Liege, Belgium
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Benoit T, Vivegnis D, Lahiri A, Itti R, Braat S, Rigo P. Tomographic myocardial imaging with technetium-99m tetrofosmin. Comparison with tetrofosmin and thallium planar imaging and with angiography. Eur Heart J 1996; 17:635-42. [PMID: 8733099 DOI: 10.1093/oxfordjournals.eurheartj.a014919] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Technetium-99m tetrofosmin is a new myocardial imaging agent with improved handling and kinetic characteristics. The purpose of this study was to compare the ability of planar and SPECT Tc-99m tetrofosmin imaging with Thallium-201 planar data to detect coronary artery disease and individual vessel lesions ( > 50% diameter stenosis). Seventy-two patients with definite or suspected coronary artery disease were included. Sixty-three had angiographic evidence of coronary artery disease, among whom 42 had had a previous myocardial infarction, while 21 had not. The total number of diseased arteries was 111. Patients underwent symptom-limited treadmill or bicycle exercise to similar endpoints. Thallium and tetrofosmin images were analysed separately by consensus reading. Interpretation was made for five standard anatomical regions (anterior, septal, inferior, lateral and apex), classified into four categories (normal, reversible, fixed and mixed defects). Sensitivity and specificity to detect coronary artery disease were 71% and 78% for Thallium-201 vs 68% and 78% for tetrofosmin by planar imaging, and 87% and 89% for tetrofosmin by SPECT. The improved sensitivity of SPECT was confirmed both in patients with and without previous myocardial infarction. The sensitivity to detect individual vessel lesions was improved by SPECT (59% tetrofosmin SPECT vs 50% thallium planar and 51% tetrofosmin planar). Individual vessel lesion detection by SPECT was 50% for the left anterior descending coronary artery, 42% for the left circumflex and 86% for the right coronary artery. This study confirms the value of technetium-99m tetrofosmin as a myocardial imaging agent. Improvements in diagnosis and in evaluating extent of disease can be expected from using SPECT.
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Affiliation(s)
- T Benoit
- University Hospital, Liège, Belgium
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35
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Bury T, Dowlati A, Paulus P, Corhay JL, Benoit T, Kayembe JM, Limet R, Rigo P, Radermecker M. Evaluation of the solitary pulmonary nodule by positron emission tomography imaging. Eur Respir J 1996; 9:410-4. [PMID: 8729997 DOI: 10.1183/09031936.96.09030410] [Citation(s) in RCA: 132] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Current noninvasive imaging methods are not sufficiently reliable for accurate detection of malignancy in most solitary pulmonary nodules (SPNs). Positron emission tomography (PET) using 18-fluorodeoxyglucose (FDG), showing increased FDG uptake and retention in malignant cells, has proved useful to differentiate malignant from benign tissue and could, therefore, contribute to the evaluation of the SPN. We performed a prospective study of 50 patients referred to the Pneumology Department with unclear diagnoses of SPN after conventional radiological screening. PET study was performed on each subject before an invasive procedure was proposed. Thirty three patients had a malignant nodule and 17 had a benign nodule. The mean size of malignant nodule was 3 cm (range 1.5-4.5 cm). All showed a marked increase in 18-FDG uptake. The mean size of benign nodule was 1.8 cm (range 0.5-3.5 cm). PET imaging showed the absence of 18-FDG uptake and correctly identified 15 of 17 benign nodules. There was two false-positive cases with a moderate increase in 18-FDG uptake (1 postprimary tuberculosis; and 1 anthracosilicotic nodule with nonspecific inflammation). At present, the sensitivity and specificity of the method are 100 and 88%, respectively. The positive and negative predictive values of PET imaging for SPNs are 94 and 100%, respectively. Our preliminary results demonstrate that PET-FDG imaging is a noninvasive technique, which appears highly accurate in differentiating malignant SPN from benign SPN.
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Affiliation(s)
- T Bury
- Dept of Pneumology, CHU Liège, Belgium
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Cohen M, Touzery C, Cottin Y, Benoit T, d'Athis P, Roy S, Louis P, Wolf JE, Rigo P, Brunotte F. Quantitative myocardial thallium single-photon emission computed tomography in normal women: demonstration of age-related differences. Eur J Nucl Med 1996; 23:25-30. [PMID: 8586098 DOI: 10.1007/bf01736986] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The aim of this study is the development of a database of normal women for quantitative analysis of exercise and reinjection myocardial single-photon emission computed tomography (SPET). We studied 101 subjects (40 males and 61 females) with less than 5% likelihood of coronary artery disease. All patients underwent stress and rest thallium-201 myocardial SPET. Myocardial stress was induced by bicycle exercise test (n=51), dipyridamole infusion (n=27) or a combined test (n=23). Multivariate ANOVA showed that the type of stress did not influence the percentage of thallium uptake for each region. Significant differences between men and women were found for the percentage of uptake in the inferior and the anterior wall. The most original finding of this study is the correlation between age and thallium uptake in the three regions of the anterior wall, showing an increase in measured thallium uptake with age for women. Consequently, two groups of women, those under and those over 55 years old, were separated, with a significantly lower tracer uptake in the anterior wall in the younger age group. These results may suggest that the commonly described breast tissue attenuation is due not only to breast volume or morphology but also to breast density. This emphasizes the need for two different databases for myocardial SPET quantitative analysis in the female population. Awareness of this fact should allow avoidance of any underestimation of possible anterior wall ischaemia in women aged more than 55 years.
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Affiliation(s)
- M Cohen
- Service de Médecine Nucléaire, Centre-Georges-François-Leclerc, 1 rue de Professeur Marion, F-21034 Dijon Cedex, France
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Abstract
Surgical soap that contains hexachlorophene is used as an antiseptic lubricant for vaginal examinations during labor in some centers. Theoretically, hexachlorophene can be absorbed from the vaginal mucosa and be potentially toxic to the fetus and neonate. To evaluate vaginal absorption and placental transfer of hexachlorophene, we measured levels in mixed arterial/venous cord serum and postpartum maternal serum in 28 women whose vaginal examinations were lubricated with pHisoHex during labor. The serum of 12 women had detectable levels of hexachlorophene, with a high level of 942 ng/ml. Cord serum had detectable levels in nine neonates, with a high level of 617 ng/ml. The conclusion is that hexachlorophene from vaginal lubricants is variably absorbed from the vaginal mucosa, and appreciable amounts can be detected in maternal and cord serum. Because of the potential for neonatal hexachlorophene toxicity, we recommend the use of alternative lubricants for pelvic examinations during labor.
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