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1. The Relationship of Body Mass Index and Abdominal Fat on the Radiation Dose Received During Routine Computed Tomographic Imaging of the Abdomen and Pelvis

Author

Orla Buckley, V. O. Chan, Sonya Allen, Shaunagh McDermott, William C. Torreggiani, Michael Casey, and Risteard O’Laoide

Subjects
Adult, Male, Radiography, Abdominal, medicine.medical_specialty, Adolescent, Radiography, Abdominal Fat, Radiation Dosage, Effective dose (radiation), Pelvis, Abdomen, medicine, Abdominal fat, Humans, Radiology, Nuclear Medicine and imaging, Prospective Studies, Prospective cohort study, Computed tomography, Body mass index, Automatic exposure control, Aged, Aged, 80 and over, business.industry, Radiation dose, General Medicine, Middle Aged, medicine.anatomical_structure, Radiology Nuclear Medicine and imaging, Female, Radiology, business, Nuclear medicine, Tomography, X-Ray Computed
Abstract

Purpose To determine the relationship of increasing body mass index (BMI) and abdominal fat on the effective dose acquired from computed tomography (CT) abdomen and pelvis scans. Methods Over 6 months, dose-length product and total milliamp-seconds (mAs) from routine CT abdomen and pelvis scans of 100 patients were recorded. The scans were performed on a 64-slice CT scanner by using an automatic exposure control system. Effective dose (mSv) based on dose-length product, BMI, periumbilical fat thickness, and intra-abdominal fat were documented for each patient. BMI, periumbilical fat thickness, and intra-abdominal fat were compared with effective dose. Results Thirty-nine men and 61 women were included in the study (mean age, 56.3 years). The mean BMI was 26.2 kg/m2. The mean effective dose was 10.3 mSv. The mean periumbilical fat thickness was 2.4 cm. Sixty-five patients had a small amount of intra-abdominal fat, and 35 had a large amount of intra-abdominal fat. The effective dose increased with increasing BMI ( P < .001) and increasing amounts of intra-abdominal fat ( P < .001). For every kilogram of weight, there is a 0.13 mSv increase in effective dose, which is equal to 6.5 chest radiographs per CT examination. For an increase in BMI by 5 kg/m2, there is a 1.95 mSv increase in effective dose, which is equal to 97.5 chest radiographs per CT examination. Conclusion Increasing BMI and abdominal fat significantly increases the effective dose received from CT abdomen and pelvis scans.

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2. CT or Invasive Coronary Angiography in Stable Chest Pain

Author

Pál Maurovich-Horvat, 1, Maria Bosserdt, 1, F Kofoed, Klaus, Nina Rieckmann, 1, Theodora Benedek, 1, Patrick Donnelly, 1, José Rodriguez-Palomares, 1, Andrejs Erglis, 1, Cyril Štěchovský, 1, Gintare Šakalyte, 1, Nada Čemerlić Adić, 1, Matthias Gutberlet, 1, D Dodd, Jonathan, Ignacio Diez, 1, Gershan Davis, 1, Elke Zimmermann, 1, Cezary Kępka, 1, Radosav Vidakovic, 1, Marco Francone, 1, Małgorzata Ilnicka-Suckiel, 1, Fabian Plank, 1, Juhani Knuuti, 1, Rita Faria, 1, Stephen Schröder, 1, Colin Berry, 1, Luca Saba, 1, Balazs Ruzsics, 1, Christine Kubiak, 1, Iñaki Gutierrez-Ibarluzea, 1, Kristian Schultz Hansen, 1, Jacqueline Müller-Nordhorn, 1, Bela Merkely, 1, D Knudsen, Andreas, Imre Benedek, 1, Clare Orr, 1, Filipa Xavier Valente, 1, Ligita Zvaigzne, 1, Vojtěch Suchánek, 1, Laura Zajančkauskiene, 1, Filip Adić, 1, Michael Woinke, 1, Mark Hensey, 1, Iñigo Lecumberri, 1, Erica Thwaite, 1, Michael Laule, 1, Mariusz Kruk, 1, N Neskovic, Aleksandar, Massimo Mancone, 1, Donata Kuśmierz, 1, Gudrun Feuchtner, 1, Mikko Pietilä, 1, Vasco Gama Ribeiro, 1, Tanja Drosch, 1, Christian Delles, 1, Gildo Matta, 1, Michael Fisher, 1, Bálint Szilveszter, 1, Linnea Larsen, 1, Mihaela Ratiu, 1, Stephanie Kelly, 1, Bruno Garcia Del Blanco, 1, Ainhoa Rubio, 1, D Drobni, Zsófia, Birgit Jurlander, 1, Ioana Rodean, 1, Susan Regan, 1, Hug Cuéllar Calabria, 1, Melinda Boussoussou, 1, Thomas Engstrøm, 1, Roxana Hodas, 1, E Napp, Adriane, Robert Haase, 1, Sarah Feger, 1, M Serna-Higuita, Lina, Konrad Neumann, 1, Henryk Dreger, 1, Matthias Rief, 1, Viktoria Wieske, 1, Melanie Estrella, 1, Peter Martus, 1, Marc, Dewey, Béla, Merkely, Pál, Maurovich-Horvat, Thomas, Engstroem, Klaus, F. Kofoed, Imre, Benedek, Theodora, Benedek, Patrick, Donnelly, José, F. Rodríguez-Palomares, Bruno Garcia Del Blanco, Andrejs, Erglis, Ligita, Zvaigzne, Vojtěch, Suchánek, Josef, Veselka, Antanas, Jankauskas, Gintare, Šakalyte, Nada Čemerlić Ađić, Oto, Ađić, Matthias, Gutberlet, Michael, Woinke, Jonathan, D. Dodd, Martin, Quinn, Ignacio Díez González, Inigo, Lecumberri, Gershan, K. Davis, Erika, Thwaite, Michael, Laule, Elke, Zimmermann, Henryk, Dreger, Matthias, Rief, Cezary, Kępka, Mariusz, Kruk, Aleksandar, N. Neskovic, Radosav, Vidakovic, Marco Francone, Massimo Mancone, Tomasz, Haran, Malgorzata, Ilnicka-Suckiel, Gudrun, Feuchtner, Guy, Friedrich, Juhani, Knuuti, Mikko, Pietilä, Rita, Faria, Vasco Gama Ribeiro, Stephen, Schröder, Thomas, Zelesny, Christian, Delles, Colin, Berry, Bruno, Loi, Gildo, Matta, Michael, Fisher, Balasz, Ruzsics, Adriane, E. Napp, Maria, Bosserdt, Melanie, Estrella, Jacob, Geleijns, Christine, Kubiak, Corinna, Meier-Windhorst, Rita, Pilger, Iñaki, Gutiérrez-Ibarluzea, Nora, Ibargoyen-Roteta, Itziar, Etxeandia, Gaizka, Benguria-Arrate, Lorea, Galnares-Cordero, Karsten, Vrangbaeck, Hans, Keiding, Kristian Schultz Hansen, Jacqueline, Müller-Nordhorn, Nina, Rieckmann, Peter, Schlattmann, Mihály, Károlyi, Júlia, Karády, Laszló, Gellér, Levente, Molnár, Tamás, Bárány, István, Édes, Dávid, Becker, Száraz Lili Milan Vecsey-Nagy, Borbala, Vattay, Tem, Jørgensen, Knut, Lindvig, Charlotte, Sørum, Helena Domínguez Vall-Lamora, Thomas, Hermann, Charlotte, Kragelund, Thomas Fritz Hansen, Jawdat, Abdulla, Jens Dahlgaard Hove, Kjeld Skødebjerg Kristensen, Leah, Hammond, Albert Roque Pérez, Imanol Otaegui Irurueta, Enzo Javier Alderete, Sebastian, Albornoz, Karlis, Strenge, Marina, Berzina, Iveta, Mintale, Marija, Tokmanceva, Linda, Glazere, Vita, Saripo, Zanda, Krastina, Dace, Sondore, Theodor, Adla, Martin, Horváth, Tadeáš, Butta, Petra, Hajžmanová, Audronė, Vaitiekienė, Gediminas, Jaruševičius, Kristina, Morkūnaitė, Eglė, Montrimavičienė, Laura, Radionovaitė, Milenko, Cankovic, Andrea, Ljubotina, Christian, Krieghoff, Robin, Gohman, Fabian, Juhrich, Patrick, Seitz, Stephen, Keane, Diarmaid, Cadogan, Claire, O. Dowling, Rudaynah, A. Alali, Siobhan, Quinlan, Edel, Meaney, Peter, Doran, Gerald, Kearns, Siobhan, O. Rourke, Sarah, Foley, Joanne, Clarke, Abdi, Abdi, Aine, Hahessy, Brian, Meehan, Michelle, Healy, Sonya, Allen, Colin, P. Cantwell, Niall, Mulvihill, Charles, Mccreery, David, Keane, Ken, Mcdonald, Peter, Quigley, Sadhbh, O. Sullivan, Brian, O. Riordan, Lara, Toerien, John, Irwin, Paddy, Barrett, Dermot, Malone, Abel, Andres, Eva, Amuriza, Arun, Ranjit, Jaroslav, Hasara, Mohammed, Obeidat, Catherine, Toohey, Sandra, Fullalove, Kate, Fenlon, Nicola, Lawler, Anju, Rawat, Francis, Beni, Julie, Ashcroft, Shirley, Cooper, Jeanette, Hawkins, Kate, Hughes, Nicola, Ashall, Doireann, Dickinson, Gemma, Halligan, Julie, Rawcliffe, Dominik, Laskowski, Anna-Maria, Mielke, Laura, Elzenbeck, Daniel, Preuß, Anne, Karas, Anja, Bärrn, Gustavo, Gehling, Florian, Specht, Lisa, Timm, Karl, Stangl, Verena, Stangl, Anna, Brand, Bernhard, Föllmer, Eser, Isler, Federico, Biavati, Mahmoud, Mohamed, Katrin, Stoyanova, Bohdan, Pryplotskyi, Christian, Wald, Steffen, Lukas, Anna, Oleksiak, Vladimir, Jovanovic, Aleksandra, Maksimovic, Milica, Stefanovic, Aleksandra, Zivanic, Andrea Ceccacci, Gianluca De Rubeis, Pambianchi, Giacomo, Paolo Severino, Tomasz, Harań, Natalia, Ilnicka, Katarzyna, Romanowska, Tomasz, Roleder, Christoph, Beyer, Antti, Saraste, Pedro, Teixeira, Mónica, Carvalho, Wilson, Ferreira, Claúdia, Dias, Nuno, Ferreira, Raquel Menezes Fernandes, André Azul Freitas, Pedro Ribeiro Queirós, Lisa Maria Costa Ribeiro Ferraz, Marion, Steindl, Giles, Roditi, Damien, Collison, Laura, Kelly, Katriona, Brooksbank, Andrew, Dougherty, Rosemary, Woodward, Elizabeth, Boyd, Kate, Smith, Michele, Porcu, Maurizio, Porcu, Francesco, Allegra, Vitanio, Palmisano, Stefano, Cossa, Alberto, Boi, Marco, Melis, Riccardo, Cau, and Christine, Denby

Subjects
Angina Pectoris Coronary Angiography Coronary Artery Disease Computed Tomography

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