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Al Mansour L, Tylski P, Chene G, Plaisant F, Janier M, Bolze PA, You B, Defez D, Tordo J, Flaus A. Estimated Fetal Radiation Dose From 18 F-FDG PET/CT During the Second and Third Trimesters of Pregnancy. Clin Nucl Med 2024; 49:605-609. [PMID: 38778468 DOI: 10.1097/rlu.0000000000005249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
PURPOSE Data published in the literature concerning the doses received by fetuses exposed to a 18 F-FDG PET are reassuring but were obtained from small and heterogeneous cohorts, and very few data are available concerning the fetal dose received after exposure to both PET and CT. The present study aimed to estimate the fetal dose received following a PET/CT exposure using methods that include anthropomorphic phantoms of pregnant women applied on a large cohort. PATIENTS AND METHODS This retrospective multicenter study included 18 pregnant patients in the second and third trimesters. For PET exposure, the fetal volume and mean concentration of radioactivity in the fetus were measured by manually drawing regions of interest. Those data, combined with the time-integrated activities of the fetus and the mother's organs, were entered into the OLINDA/EXM software 2.0 to assess the fetal dose due to PET exposure. To estimate the fetal dose received due to CT exposure, 2 softwares were used: CT-Expo (based on geometric phantom models of nonpregnant patients) and VirtualDose (using pregnant patient phantoms). RESULTS The fetal dose exposure for PET/CT examination in the second trimester ranged from 5.7 to 15.8 mGy using CT-Expo (mean, 11.6 mGy) and from 5.1 to 11.6 mGy using VirtualDose (mean, 8.6 mGy). In the third trimester, it ranged from 7.9 to 16.6 mGy using CT-Expo (mean, 10.7 mGy) and from 6.1 to 10.7 mGy using VirtualDose (mean, 7.6 mGy). CONCLUSIONS The estimated fetal doses were in the same range of those previously published and are well below the threshold for deterministic effects. Pregnancy does not constitute an absolute contraindication for a clinically justified hybrid 18 F-FDG PET/CT.
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Affiliation(s)
- Laure Al Mansour
- From the Service de Médecine Nucléaire, Hospices Civils de Lyon, Lyon, France
| | - Perrine Tylski
- Service de Physique Médicale et Radioprotection, Hospices Civils de Lyon, Lyon, France
| | - Gautier Chene
- Service de Gynécologie Obstétrique, Hôpital Femme Mère Enfant, Hospices Civils de Lyon, Bron, France
| | - Franck Plaisant
- Groupements Hospitaliers Est et Sud, Réanimation Néonatale et Néonatalogie, Hospices Civils de Lyon, Lyon, France
| | | | - Pierre Adrien Bolze
- Service de Chirurgie Gynécologique et Ontologique, Obstétrique, Hôpital Lyon Sud, Equipe CICLY EA3738, Université Lyon 1 Claude Bernard, Hospices Civils de Lyon, Pierre-Bénite, France
| | - Benoit You
- Service d'Oncologie Médicale, CITOHL, EPSILYON, IC-HCL, Equipe CICLY EA3738, Université Lyon 1, GINECO, Hospices Civils de Lyon, Lyon, France
| | - Didier Defez
- Service de Physique Médicale et Radioprotection, Hospices Civils de Lyon, Lyon, France
| | - Jérémie Tordo
- From the Service de Médecine Nucléaire, Hospices Civils de Lyon, Lyon, France
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Perelli F, Turrini I, Giorgi MG, Renda I, Vidiri A, Straface G, Scatena E, D’Indinosante M, Marchi L, Giusti M, Oliva A, Grassi S, De Luca C, Catania F, Vizzielli G, Restaino S, Gullo G, Eleftheriou G, Mattei A, Signore F, Lanzone A, Scambia G, Cavaliere AF. Contrast Agents during Pregnancy: Pros and Cons When Really Needed. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph192416699. [PMID: 36554582 PMCID: PMC9779218 DOI: 10.3390/ijerph192416699] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 12/06/2022] [Accepted: 12/10/2022] [Indexed: 05/13/2023]
Abstract
Many clinical conditions require radiological diagnostic exams based on the emission of different kinds of energy and the use of contrast agents, such as computerized tomography (CT), positron emission tomography (PET), magnetic resonance (MR), ultrasound (US), and X-ray imaging. Pregnant patients who should be submitted for diagnostic examinations with contrast agents represent a group of patients with whom it is necessary to consider both maternal and fetal effects. Radiological examinations use different types of contrast media, the most used and studied are represented by iodinate contrast agents, gadolinium, fluorodeoxyglucose, gastrographin, bariumsulfate, and nanobubbles used in contrast-enhanced ultrasound (CEUS). The present paper reports the available data about each contrast agent and its effect related to the mother and fetus. This review aims to clarify the clinical practices to follow in cases where a radiodiagnostic examination with a contrast medium is indicated to be performed on a pregnant patient.
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Affiliation(s)
- Federica Perelli
- Azienda USL Toscana Centro, Gynecology and Obstetric Department, Santa Maria Annunziata Hospital, 50012 Florence, Italy
| | - Irene Turrini
- Azienda USL Toscana Centro, Gynecology and Obstetric Department, Santo Stefano Hospital, 59100 Prato, Italy
- Correspondence:
| | - Maria Gabriella Giorgi
- Azienda USL Toscana Centro, Gynecology and Obstetric Department, Santo Stefano Hospital, 59100 Prato, Italy
| | - Irene Renda
- Division of Obstetrics and Gynecology, Department of Biomedical, Experimental and Clinical Sciences, University of Florence, 50134 Florence, Italy
| | - Annalisa Vidiri
- School of Medicine, Catholic University of the Sacred Hearth, 00168 Rome, Italy
| | - Gianluca Straface
- Obstetrics and Gynecology Unit, Policlinico Abano Terme, 35031 Abano Terme, Italy
| | - Elisa Scatena
- Azienda USL Toscana Centro, Gynecology and Obstetric Department, Santo Stefano Hospital, 59100 Prato, Italy
| | - Marco D’Indinosante
- Azienda USL Toscana Centro, Gynecology and Obstetric Department, Santo Stefano Hospital, 59100 Prato, Italy
| | - Laura Marchi
- Azienda USL Toscana Centro, Gynecology and Obstetric Department, Santo Stefano Hospital, 59100 Prato, Italy
| | - Marco Giusti
- Azienda USL Toscana Centro, Gynecology and Obstetric Department, Santa Maria Annunziata Hospital, 50012 Florence, Italy
| | - Antonio Oliva
- Department of Health Surveillance and Bioethics, Section of Legal Medicine, Fondazione Policlinico A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Simone Grassi
- Department of Health Surveillance and Bioethics, Section of Legal Medicine, Fondazione Policlinico A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Carmen De Luca
- Teratology Information Service, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy
| | - Francesco Catania
- Department of Obstetrics and Gynecology, Ospedale “Santa Maria Alla Gruccia”, 52025 Montevarchi, Italy
| | - Giuseppe Vizzielli
- Department of Medicinal Area (DAME) Clinic of Obstetrics and Gynecology, Santa Maria della Misericordia Hospital, Azienda Sanitaria Universitaria Friuli Centrale, 33100 Udine, Italy
| | - Stefano Restaino
- Department of Medicinal Area (DAME) Clinic of Obstetrics and Gynecology, Santa Maria della Misericordia Hospital, Azienda Sanitaria Universitaria Friuli Centrale, 33100 Udine, Italy
| | - Giuseppe Gullo
- IVF Public Center, Azienda Ospedaliera Ospedali Riuniti (AOOR) Villa Sofia Cervello, University of Palermo, 90146 Palermo, Italy
| | - Georgios Eleftheriou
- Poison Control Center and Teratology Information Service, Hospital Papa Giovanni XIII, 24127 Bergamo, Italy
| | - Alberto Mattei
- Azienda USL Toscana Centro, Gynecology and Obstetric Department, Santa Maria Annunziata Hospital, 50012 Florence, Italy
| | - Fabrizio Signore
- Obstetrics and Gynecology Unit, Santo Eugenio Hospital, 00144 Rome, Italy
- School of Medicine, Unicamillus University Rome, 00131 Rome, Italy
| | - Antonio Lanzone
- School of Medicine, Catholic University of the Sacred Hearth, 00168 Rome, Italy
- Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy
| | - Giovanni Scambia
- School of Medicine, Catholic University of the Sacred Hearth, 00168 Rome, Italy
- Division of Gynecologic Oncology, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy
| | - Anna Franca Cavaliere
- School of Medicine, Catholic University of the Sacred Hearth, 00168 Rome, Italy
- Division of Gynecology and Obstetrics Fatebenefratelli Isola Tiberina, 00186 Rome, Italy
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Qu S, Xie T, Giger ML, Mao X, Zaidi H. Construction of A Digital Fetus Library for Radiation Dosimetry. Med Phys 2022; 50:2577-2589. [PMID: 35962972 DOI: 10.1002/mp.15905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 05/12/2022] [Accepted: 07/08/2022] [Indexed: 11/06/2022] Open
Abstract
PURPOSE Accurate estimation of fetal absorbed dose and radiation risks are crucial for radiation protection and important for radiological imaging research owing to the high radio-sensitivity of the fetus. Computational anthropomorphic models have been widely used in patient-specific radiation dosimetry calculations. In this work, we aim to build the first digital fetal library for more reliable and accurate radiation dosimetry studies. ACQUISITION AND VALIDATION METHODS Computed tomography (CT) images of abdominal and pelvic regions of 46 pregnant females were segmented by experienced medical physicists. The segmented tissues/organs include the body contour, skeleton, uterus, liver, kidney, intestine, stomach, lung, bladder, gall bladder, spleen and pancreas for maternal body, and placenta, amniotic fluid, fetal body, fetal brain and fetal skeleton. Non-Uniform Rational B-Spline (NURBS) surfaces of each identified region was constructed manually using 3D modeling software. The Hounsfield unit (HU) values of each identified organs were gathered from CT images of pregnant patients and converted to tissue density. Organ volumes were further adjusted according to reference measurements for the developing fetus recommended by the World Health Organization (WHO) and International Commission on Radiological Protection (ICRP). A series of anatomical parameters, including femur length (FL), humerus length (HL), biparietal diameter (BPD), abdominal circumference (FAC) and head circumference (HC) were measured and compared with WHO recommendations. DATA FORMAT AND USAGE NOTES The first fetal patient-specific model library was developed with the anatomical characteristics of each model derived from the corresponding patient whose gestational age varies between 8-weeks and 35-weeks. Voxelized models are represented in the form of MCNP matrix input files representing the three-dimensional model of the fetus. The size distributions of each model are also provided in text files. All data are stored on Zenodo and are publicly accessible on the following link: https://zenodo.org/record/6471884. POTENTIAL APPLICATIONS The constructed fetal models and maternal anatomical characteristics are consistent with the corresponding patients. The resulting computational fetus could be used in radiation dosimetry studies to improve the reliability of fetal dosimetry and radiation risks assessment. The advantages of NURBS surfaces in terms of adapting fetal postures and positions enable us to adequately assess their impact on radiation dosimetry calculations. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Shuiyin Qu
- Institute of Radiation Medicine, Fudan University, 2094 Xietu Road, Shanghai, 200032, China
| | - Tianwu Xie
- Institute of Radiation Medicine, Fudan University, 2094 Xietu Road, Shanghai, 200032, China.,Division of Nuclear Medicine and Molecular Imaging, Geneva University Hospital, Geneva, CH-1211, Switzerland
| | - Maryellen L Giger
- Department of Radiology, Committee on Medical Physics, University of Chicago, Chicago, Illinois, United States
| | - Xianqing Mao
- Faculty of Science, Technology and Medicine (FSTM), Department of Life Sciences and Medicine, University of Luxembourg, Luxembourg
| | - Habib Zaidi
- Division of Nuclear Medicine and Molecular Imaging, Geneva University Hospital, Geneva, CH-1211, Switzerland.,Geneva Neuroscience Center, Geneva University, Geneva, CH-1205, Switzerland.,Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Groningen, Netherlands.,Department of Nuclear Medicine, University of Southern Denmark, Odense, DK-500, Denmark
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Parpinel G, Laudani ME, Giunta FP, Germano C, Zola P, Masturzo B. Use of Positron Emission Tomography for Pregnancy-Associated Cancer Assessment: A Review. J Clin Med 2022; 11:jcm11133820. [PMID: 35807104 PMCID: PMC9267808 DOI: 10.3390/jcm11133820] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 06/21/2022] [Accepted: 06/25/2022] [Indexed: 12/10/2022] Open
Abstract
Background. Positron emission tomography (PET) has proven clinical utility both in the initial and relapse staging phase, but this technique is controversial during pregnancy. The objective of this review is to provide a compendium of available information on the use of PET during pregnancy. Materials and methods. A systematic literature review was conducted from 1 January 2004 until 20 May 2021. A total of 4 small series and 9 case reports consisting of 25 cases were selected. Results. During the first trimester, the fetus is most sensitive to ionization damage, so lower doses are recommended (2.6E-02 mGy/MBq). Fetal-effective doses are higher in this period and the average fetal dose (4.06 ± 3.22 mGy) remains significantly below the threshold for deterministic effects. During the second and third trimesters, recommended doses are higher (1.4E-02 mGy/MBq at 6 months, and 6.9E-03 mGy/MBq at 9 months of gestation). 18F-FDG activity was distributed to the whole fetus with a prevalence of myocardial tissue in seven cases. The use of special precautions, such as PET-magnetic resonance (MR) and urinary bladder catheterization, reduces the amount of radioactive tracer. Breastfeeding interruption is not recommended. Conclusions. 18F-FDG PET is not contraindicated in pregnancy, but multidisciplinary discussion is necessary and strict precautions are recommended.
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Affiliation(s)
- Giulia Parpinel
- Unit of Gynecology and Obstetrics 2U, Sant’Anna Hospital, Città della Salute e della Scienza di Torino, University of Turin, 10126 Turin, Italy; (G.P.); (M.E.L.); (P.Z.)
| | - Maria Elena Laudani
- Unit of Gynecology and Obstetrics 2U, Sant’Anna Hospital, Città della Salute e della Scienza di Torino, University of Turin, 10126 Turin, Italy; (G.P.); (M.E.L.); (P.Z.)
| | - Francesca Paola Giunta
- Unit of Nuclear Medicine, Department of Medical Sciences, Città della Salute e della Scienza di Torino, University of Turin, 10126 Turin, Italy;
| | - Chiara Germano
- Department of Obstetrics and Gynecology, Ospedale degli Infermi, 13875 Ponderano, Italy;
- Correspondence:
| | - Paolo Zola
- Unit of Gynecology and Obstetrics 2U, Sant’Anna Hospital, Città della Salute e della Scienza di Torino, University of Turin, 10126 Turin, Italy; (G.P.); (M.E.L.); (P.Z.)
| | - Bianca Masturzo
- Department of Obstetrics and Gynecology, Ospedale degli Infermi, 13875 Ponderano, Italy;
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5
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Zanotti-Fregonara P. Radiation Absorbed Dose to the Embryo and Fetus from Radiopharmaceuticals. Semin Nucl Med 2022; 52:140-148. [PMID: 35067360 PMCID: PMC8923960 DOI: 10.1053/j.semnuclmed.2021.12.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Nuclear medicine procedures are generally avoided during pregnancy out of concern for the radiation dose to the fetus. However, for clinical reasons, radiopharmaceuticals must occasionally be administered to pregnant women. The procedures most likely to be performed voluntarily during pregnancy are lung scans to diagnose pulmonary embolism and 18F-fluoro-2-deoxyglucose (18F-FDG) scans for the staging of cancers. This article focuses on the challenges of fetal dose calculation after administering radiopharmaceuticals to pregnant women. In particular, estimation of the fetal dose is hampered by the lack of fetal biokinetic data of good quality and is subject to the variability associated with methodological choices in dose calculations, such as the use of various anthropomorphic phantoms and modeling of the maternal bladder. Despite these sources of uncertainty, the fetal dose can be reasonably calculated within a range that is able to inform clinical decisions. Current dose estimates suggest that clinically justified nuclear medicine procedures should be performed even during pregnancy because the clinical benefits for the mother and the fetus outweigh the small and purely hypothetical radiation risk to the fetus. In addition, the fetal radiation dose should be minimized without compromising image quality, such as by encouraging bladder voiding and by using positron emission tomography (PET)/magnetic resonance imaging (MRI) devices or high-sensitivity PET scanners that generate images of good quality with a lower injected activity.
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Despierres M, Boudy AS, Selleret L, Gligorov J, Richard S, Thomassin I, Dabi Y, Zilberman S, Touboul C, Montravers F, Khaldoun K, Darai E. Feasibility, Safety and Impact of (18F)-FDG PET/CT in patients with pregnancy-associated cancer: experience of the French CALG (Cancer Associé à La Grossesse) network. Acta Oncol 2022; 61:302-308. [PMID: 34779355 DOI: 10.1080/0284186x.2021.2004323] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND The incidence of pregnancy-associated cancers has been increasing for decades. (18F)-FDG Positron Emission Tomography (PET)/Computed Tomography (CT) imaging has become a golden standard in the staging of many malignant diseases. The aims of the current study were to evaluate the feasibility, safety and impact of (18F)-FDG PET/CT performed during pregnancy. MATERIAL AND METHODS A retrospective analysis from the prospective database of the Cancer Associé à La Grossesse (CALG) network (Tenon Hospital, France) including patients who underwent (18F)-FDG PET/CT during their pregnancy between 2015 and 2020. RESULTS Of the 536 patients for whom advice from the CALG network was requested during the study period, 359 were diagnosed with cancer during pregnancy. Study population was composed of 63 (17.5%) patients who underwent (18F)-FDG PET/CT. Most cancers were diagnosed during the second trimester. Seventy-five percent were diagnosed with breast cancer, mostly locally advanced invasive ductal carcinomas. Median term of pregnancy at PET/CT was 24.8 weeks of gestation. Twelve (19%), 24 (38.1%) and 22 (34.9%) patients underwent the exam during the 1st, 2nd and 3rd trimester, respectively. (18F)-FDG PET/CT resulted in stage modification for 38 (60.3%) of the patients (28 with more extensive lymph node involvement and 10 with metastatic disease) with subsequently/accordingly modified first-line medical treatment. Fifty patients gave birth to healthy newborns. Two patients had a medical termination of pregnancy, five had a medical abortion, one neonatal death occurred in a patient with severe preeclampsia (unrelated to (18F)-FDG PET/CT). The data of 46 children were available at 6 months, 29 at 12 months, and 15 at 24 months. No cases of mental retardation, childhood cancer, or malformation were reported within 2 years. CONCLUSION (18F)-FDG PET/CT has a major impact on the management of pregnancy-associated cancers and does not appear to cause fetal side effects suggesting that the exam is feasible during pregnancy as maternal benefits outweigh fetal risks.
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Affiliation(s)
- Marie Despierres
- Department of Gynaecology and Obstetrics, Tenon University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Sorbonne University, Paris, France
| | - Anne-Sophie Boudy
- Department of Gynaecology and Obstetrics, Tenon University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Sorbonne University, Paris, France
- Cancer Associé à La Grossesse (CALG), French CALG Network, Paris, France
| | - Lise Selleret
- Department of Gynaecology and Obstetrics, Tenon University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Sorbonne University, Paris, France
- Cancer Associé à La Grossesse (CALG), French CALG Network, Paris, France
| | - Joseph Gligorov
- Department of Oncology, Tenon University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Sorbonne University, Paris, France
- UMRS-938 4. Faculté de Médecine Sorbonne Université, Paris, France
| | - Sandrine Richard
- Department of Oncology, Tenon University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Sorbonne University, Paris, France
| | - Isabelle Thomassin
- UMRS-938 4. Faculté de Médecine Sorbonne Université, Paris, France
- Department of Radiology, Tenon University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Sorbonne University, Paris, France
| | - Yohann Dabi
- Department of Gynaecology and Obstetrics, Tenon University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Sorbonne University, Paris, France
- Cancer Associé à La Grossesse (CALG), French CALG Network, Paris, France
| | - Sonia Zilberman
- Department of Gynaecology and Obstetrics, Tenon University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Sorbonne University, Paris, France
- Cancer Associé à La Grossesse (CALG), French CALG Network, Paris, France
| | - Cyril Touboul
- Department of Gynaecology and Obstetrics, Tenon University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Sorbonne University, Paris, France
- Cancer Associé à La Grossesse (CALG), French CALG Network, Paris, France
- UMRS-938 4. Faculté de Médecine Sorbonne Université, Paris, France
| | - Françoise Montravers
- UMRS-938 4. Faculté de Médecine Sorbonne Université, Paris, France
- Department of Nuclear Medicine, Tenon University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Sorbonne University, Paris, France
| | - Kerrou Khaldoun
- UMRS-938 4. Faculté de Médecine Sorbonne Université, Paris, France
- Department of Nuclear Medicine, Tenon University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Sorbonne University, Paris, France
| | - Emile Darai
- Department of Gynaecology and Obstetrics, Tenon University Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Sorbonne University, Paris, France
- Cancer Associé à La Grossesse (CALG), French CALG Network, Paris, France
- UMRS-938 4. Faculté de Médecine Sorbonne Université, Paris, France
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7
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Nasrabadi M, Ahmadi N, Karimian A. 18F-Fludeoxyglucose absorbed dose estimation in fetus during early pregnancy. JOURNAL OF MEDICAL SIGNALS & SENSORS 2022; 12:171-175. [PMID: 35755983 PMCID: PMC9215831 DOI: 10.4103/jmss.jmss_70_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/28/2020] [Accepted: 10/24/2021] [Indexed: 12/03/2022]
Abstract
The purpose of this study is to assess a rare case of fetal radiation absorbed dose here through 18F-Fludeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT) in early pregnancy (5-week-old fetus). The fetal absorbed dose due to the radiation emitted from the mother's body, the fetus self-dose, and the dose received from CT were computed. The 35-year-old patient, weighing 85 kg, was injected with 370 MBq of 18F-FDG. Imaging started at 1 h with CT acquisition followed by PET imaging. The photon and positron self-dose was calculated by applying the Monte Carlo (MC) GATE (GEANT 4 Application for Tomographic Emission) code. The volume of absorbed dose from the mother's body organs and the absorbed dose from the CT were added to the self-dose to obtain the final dose. The volume of self-dose obtained through MC simulation for the fetus was 3.3 × 10-2 mGy/MBq, of which 2.97 × 10-2 mGy/MBq was associated with positrons and 0.33 × 10-2 mGy/MBq was associated with photons. Biologically, the absorbed dose from CT, 7.3 mGy, had to be added to the total dose. The absorbed dose by the fetus during early pregnancy was higher than the standard value of 2.2 × 10-2 mGy/MBq (MIRD DER) because, during the examinations, the mother's bladder was full. This issue was a concern during updating standards.
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8
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Ortíz Banguera S, García JR, Compte Montañez A, Bassa Massanas P, Kauak Kuschel M, Riera E. Radiation dose reduction on a 18F-FDG PET/MRI procedure for staging of lymphoma in a pregnant patient. A case report. Rev Esp Med Nucl Imagen Mol 2021; 40:378-379. [PMID: 34752374 DOI: 10.1016/j.remnie.2021.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
| | - J R García
- Servicio de Medicina Nuclear, CETIR Ascires, Barcelona, Spain
| | | | | | - M Kauak Kuschel
- Servicio de Medicina Nuclear, CETIR Ascires, Barcelona, Spain
| | - E Riera
- Servicio de Medicina Nuclear, CETIR Ascires, Barcelona, Spain
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9
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Ortíz Banguera S, García JR, Compte Montañez A, Bassa Massanas P, Kauak Kuschel M, Riera E. Radiation dose reduction on a 18F-FDG PET/MRI procedure for staging of lymphoma in a pregnant patient. A case report. Rev Esp Med Nucl Imagen Mol 2020; 40:S2253-654X(20)30200-6. [PMID: 33339743 DOI: 10.1016/j.remn.2020.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/15/2020] [Accepted: 10/18/2020] [Indexed: 11/22/2022]
Affiliation(s)
| | - J R García
- Servicio de Medicina Nuclear. CETIR Ascires, Barcelona, España
| | | | | | - M Kauak Kuschel
- Servicio de Medicina Nuclear. CETIR Ascires, Barcelona, España
| | - E Riera
- Servicio de Medicina Nuclear. CETIR Ascires, Barcelona, España
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10
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Abstract
This 37-year-old woman was diagnosed with breast cancer during pregnancy. After multidisciplinary meeting, she was referred to our department for an FDG PET/CT for staging, and chemotherapy with weekly infusion of paclitaxel was initiated before childbirth. We estimated the fetal dose from the PET/CT procedure, and our results show that, if deemed necessary, this examination can reasonably be performed during pregnancy. The patient gave birth vaginally at term to an apparently healthy girl.
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11
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Taïeb D, Hicks RJ, Hindié E, Guillet BA, Avram A, Ghedini P, Timmers HJ, Scott AT, Elojeimy S, Rubello D, Virgolini IJ, Fanti S, Balogova S, Pandit-Taskar N, Pacak K. European Association of Nuclear Medicine Practice Guideline/Society of Nuclear Medicine and Molecular Imaging Procedure Standard 2019 for radionuclide imaging of phaeochromocytoma and paraganglioma. Eur J Nucl Med Mol Imaging 2019; 46:2112-2137. [PMID: 31254038 PMCID: PMC7446938 DOI: 10.1007/s00259-019-04398-1] [Citation(s) in RCA: 193] [Impact Index Per Article: 38.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 06/10/2019] [Indexed: 01/11/2023]
Abstract
PURPOSE Diverse radionuclide imaging techniques are available for the diagnosis, staging, and follow-up of phaeochromocytoma and paraganglioma (PPGL). Beyond their ability to detect and localise the disease, these imaging approaches variably characterise these tumours at the cellular and molecular levels and can guide therapy. Here we present updated guidelines jointly approved by the EANM and SNMMI for assisting nuclear medicine practitioners in not only the selection and performance of currently available single-photon emission computed tomography and positron emission tomography procedures, but also the interpretation and reporting of the results. METHODS Guidelines from related fields and relevant literature have been considered in consultation with leading experts involved in the management of PPGL. The provided information should be applied according to local laws and regulations as well as the availability of various radiopharmaceuticals. CONCLUSION Since the European Association of Nuclear Medicine 2012 guidelines, the excellent results obtained with gallium-68 (68Ga)-labelled somatostatin analogues (SSAs) in recent years have simplified the imaging approach for PPGL patients that can also be used for selecting patients for peptide receptor radionuclide therapy as a potential alternative or complement to the traditional theranostic approach with iodine-123 (123I)/iodine-131 (131I)-labelled meta-iodobenzylguanidine. Genomic characterisation of subgroups with differing risk of lesion development and subsequent metastatic spread is refining the use of molecular imaging in the personalised approach to hereditary PPGL patients for detection, staging, and follow-up surveillance.
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Affiliation(s)
- David Taïeb
- Department of Nuclear Medicine, La Timone University Hospital, CERIMED, Aix-Marseille University, 264 rue Saint-Pierre, 13005, Marseille Cedex 05, France
| | - Rodney J. Hicks
- Centre for Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - Elif Hindié
- Department of Nuclear Medicine, Hôpital Haut-Lévêque, Bordeaux University Hospitals, Pessac, France
| | - Benjamin A. Guillet
- Department of Radiopharmacy, La Timone University Hospital, CERIMED, Aix-Marseille University, Marseille, France
| | - Anca Avram
- Nuclear Medicine/Radiology, University of Michigan, Ann Arbor, MI, USA
| | - Pietro Ghedini
- Nuclear Medicine Unit, Medicina Nucleare Metropolitana, University Hospital S.Orsola-Malpighi, Bologna, Italy
| | - Henri J. Timmers
- Department of Endocrinology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | | | - Saeed Elojeimy
- Department of Radiology, University of New Mexico, Albuquerque, NM, USA
| | - Domenico Rubello
- Department of Nuclear Medicine, Radiology, Neuroradiology, Medical Physics, Clinical Laboratory, Microbiology, Pathology, Transfusional Medicine, Santa Maria della Misericordia Hospital, Rovigo, Italy
| | - Irène J. Virgolini
- Department of Nuclear Medicine, Medical University Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria
| | - Stefano Fanti
- Nuclear Medicine Unit, Medicina Nucleare Metropolitana, University Hospital S.Orsola-Malpighi, Bologna, Italy
| | - Sona Balogova
- Department of Nuclear Medicine, Comenius University and St. Elisabeth Oncology Institute, Heydukova 10, 81250 Bratislava, Slovakia,Department of Nuclear Medicine, Hôpital Tenon Assistance Publique-Hôpitaux de Paris and Sorbonne University, Paris, France
| | - Neeta Pandit-Taskar
- Department of Radiology, Molecular Imaging and Therapy Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Karel Pacak
- Eunice Kennedy Shriver National Institutes of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
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Martínez MT, Bermejo B, Hernando C, Gambardella V, Cejalvo JM, Lluch A. Breast cancer in pregnant patients: A review of the literature. Eur J Obstet Gynecol Reprod Biol 2018; 230:222-227. [PMID: 29728277 DOI: 10.1016/j.ejogrb.2018.04.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 04/16/2018] [Accepted: 04/22/2018] [Indexed: 12/12/2022]
Abstract
Breast cancer diagnosed during pregnancy is a rare occurrence at present; however, in recent years a trend towards delayed childbirth is generating an increase in its incidence. This situation requires a multidisciplinary approach involving obstetricians, oncologists and surgeons. In this review we analyse diagnostic methods, different possible treatments and long-term patient prognosis. We conducted a search for articles published in PubMed, or in abstract form from the San Antonio Breast Cancer Symposium (SABCS), the European Society for Medical Oncology (ESMO), and the American Society of Clinical Oncology (ASCO) annual meeting, using the search terms: "Breast cancer and pregnancy". Breast cancer occurring during pregnancy requires extra effort to offer patients the best multidisciplinary management. There is no difference in the pathology-based classification, but breast cancer during pregnancy seems to be associated with different patterns of gene expression. Chemotherapy and surgery are generally safe and well-tolerated by patients during the second and third trimesters of pregnancy. The poorer prognosis could be attributed mainly to a delay in diagnosis and because breast cancer in young patients is a more aggressive disease. Finally, balancing the health of mother and child must be paramount.
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Affiliation(s)
- María Teresa Martínez
- Medical Oncology and Hematology Unit, Health Research Institute INCLIVA, University of Valencia, The Centre of Networked Biomedical Cancer Research (CIBERONC), Spain.
| | - Begoña Bermejo
- Medical Oncology and Hematology Unit, Health Research Institute INCLIVA, University of Valencia, The Centre of Networked Biomedical Cancer Research (CIBERONC), Spain
| | - Cristina Hernando
- Medical Oncology and Hematology Unit, Health Research Institute INCLIVA, University of Valencia, The Centre of Networked Biomedical Cancer Research (CIBERONC), Spain
| | - Valentina Gambardella
- Medical Oncology and Hematology Unit, Health Research Institute INCLIVA, University of Valencia, The Centre of Networked Biomedical Cancer Research (CIBERONC), Spain
| | - Juan Miguel Cejalvo
- Medical Oncology and Hematology Unit, Health Research Institute INCLIVA, University of Valencia, The Centre of Networked Biomedical Cancer Research (CIBERONC), Spain
| | - Ana Lluch
- Medical Oncology and Hematology Unit, Health Research Institute INCLIVA, University of Valencia, The Centre of Networked Biomedical Cancer Research (CIBERONC), Spain
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Fujii K, Orisaka M, Yamamoto M, Nishijima K, Yoshida Y. Primary intramedullary spinal cord tumour in pregnancy: a case report. Spinal Cord Ser Cases 2018; 4:25. [PMID: 29581892 DOI: 10.1038/s41394-018-0059-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 02/19/2018] [Accepted: 02/19/2018] [Indexed: 11/09/2022] Open
Abstract
Introduction Primary spinal cord tumours can lead to severe neurological complications and even death. Pregnant women often complain of discomfort of the lower limbs, which is usually caused by sciatica. Here we present the case of a pregnant woman, who was initially considered to have sciatica, but was finally diagnosed with a primary intramedullary spinal cord tumour. Case presentation A 28-year-old pregnant woman presented to our hospital with inexplicable numbness in her lower limbs. She was initially considered to have sciatica, but acute deterioration of neurological symptoms and plain magnetic resonance imaging (MRI) findings suggested malignancy. The patient was finally diagnosed with a primary intramedullary spinal cord tumour at the C3-Th5 region. An emergency caesarean section was performed, after which the spinal cord lesion was evaluated using contrast-enhanced MRI, positron emission tomography with 2-deoxy-2-[fluorine-18] fluoro-d-glucose integrated with computed tomography, and spinal angiography, and further treatment was initiated. However, while the patient's spinal cord tumour surgery was performed in early postpartum, her paraplegia and bladder and rectal disturbances remained unchanged even 1 year after surgery. Discussion Because of the low incidence of spinal cord tumours during pregnancy, no definite reports have been published on the treatment of pregnant patients with spinal cord tumours. Although safe imaging tests during pregnancy are limited, intervention in such patients should be performed as early as possible to avoid irreversible neurological deterioration.
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Affiliation(s)
- Kyoko Fujii
- Department of Obstetrics and Gynecology, University of Fukui, 23-3 Matsuoka-shimoaizuki, Eiheiji-cho, Yoshida-Gun Fukui, 910-1193 Japan
| | - Makoto Orisaka
- Department of Obstetrics and Gynecology, University of Fukui, 23-3 Matsuoka-shimoaizuki, Eiheiji-cho, Yoshida-Gun Fukui, 910-1193 Japan
| | - Makoto Yamamoto
- Department of Obstetrics and Gynecology, University of Fukui, 23-3 Matsuoka-shimoaizuki, Eiheiji-cho, Yoshida-Gun Fukui, 910-1193 Japan
| | - Koji Nishijima
- Department of Obstetrics and Gynecology, University of Fukui, 23-3 Matsuoka-shimoaizuki, Eiheiji-cho, Yoshida-Gun Fukui, 910-1193 Japan
| | - Yoshio Yoshida
- Department of Obstetrics and Gynecology, University of Fukui, 23-3 Matsuoka-shimoaizuki, Eiheiji-cho, Yoshida-Gun Fukui, 910-1193 Japan
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Xie T, Zanotti-Fregonara P, Edet-Sanson A, Zaidi H. Patient-Specific Computational Model and Dosimetry Calculations for PET/CT of a Patient Pregnant with Twins. J Nucl Med 2018; 59:1451-1458. [PMID: 29371408 DOI: 10.2967/jnumed.117.205286] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 01/12/2018] [Indexed: 11/16/2022] Open
Abstract
The radiation dose delivered to pregnant patients during radiologic imaging procedures raises health concerns because the developing embryo and fetus are considered to be highly radiosensitive. To appropriately weigh the diagnostic benefits against the radiation risks, the radiologist needs reasonably accurate and detailed estimates of the fetal dose. Expanding our previously developed series of computational phantoms for pregnant women, we here describe a personalized model for twin pregnancy, based on an actual clinical scan. Methods: The model is based on a standardized hybrid pregnant female and fetus phantom and on a clinical case of a patient who underwent an 18F-FDG PET/CT scan while expecting twins at 25 weeks' gestation. This model enabled us to produce a realistic physical representation of the pregnant patient and to estimate the maternal and fetal organ doses from the 18F-FDG and CT components. The Monte Carlo N-Particle Extended general-purpose code was used for radiation transport simulation. Results: The 18F-FDG doses for the 2 fetuses were 3.78 and 3.99 mGy, and the CT doses were 0.76 and 0.70 mGy, respectively. Therefore, the relative contribution of 18F-FDG and CT to the total dose to the fetuses was about 84% and 16%, respectively. Meanwhile, for 18F-FDG, the calculated personalized absorbed dose was about 40%-50% higher than the doses reported by other dosimetry computer software tools. Conclusion: Our approach to constructing personalized computational models allows estimation of a patient-specific radiation dose, even in cases with unusual anatomic features such as a twin pregnancy. Our results also show that, even in twins, the fetal organ doses from both 18F-FDG and CT present a certain variability linked to the anatomic characteristics. The CT fetal dose is smaller than the 18F-FDG PET dose.
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Affiliation(s)
- Tianwu Xie
- Division of Nuclear Medicine and Molecular Imaging, Geneva University Hospital, Geneva, Switzerland
| | | | | | - Habib Zaidi
- Division of Nuclear Medicine and Molecular Imaging, Geneva University Hospital, Geneva, Switzerland .,Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, Groningen, Netherlands.,Geneva University Neurocenter, University of Geneva, Geneva, Switzerland; and.,Department of Nuclear Medicine, University of Southern Denmark, Odense, Denmark
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Zanotti-Fregonara P, Hindie E. Performing nuclear medicine examinations in pregnant women. Phys Med 2017; 43:159-164. [DOI: 10.1016/j.ejmp.2017.05.043] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 04/10/2017] [Accepted: 05/02/2017] [Indexed: 12/28/2022] Open
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Zanotti-Fregonara P, Stabin MG. New Fetal Radiation Doses for 18F-FDG Based on Human Data. J Nucl Med 2017; 58:1865-1866. [PMID: 28572491 DOI: 10.2967/jnumed.117.195404] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 05/26/2017] [Indexed: 11/16/2022] Open
Abstract
Current standard values of fetal dosimetry deriving from 18F-FDG injection in pregnant women are estimated from animal data. The present communication offers a revision of fetal dosimetry values calculated from recently published human data, in which fetal 18F-FDG uptake was directly observed in vivo. The final doses were obtained from the observed time-integrated activity coefficients and a new generation of anthropomorphic voxel-based pregnancy phantoms.
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Stabin MG. Radiation dose and risks to fetus from nuclear medicine procedures. Phys Med 2017; 43:190-198. [PMID: 28454782 DOI: 10.1016/j.ejmp.2017.04.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 03/14/2017] [Accepted: 04/01/2017] [Indexed: 11/19/2022] Open
Abstract
This article discusses issues regarding administration of radiopharmaceuticals to pregnant women. Standardized dose estimates and possible biological effects on the unborn child are presented. Current and future mathematical models (phantoms) are discussed. Standardized dose estimates for pregnant women at several stages of gestation based on the current generation of phantoms are given. Issues related to administration of radioiodines, particularly 131I-NaI, are presented. Iodine concentrates in the fetal thyroid and therefore can give very high doses, even resulting in complete destruction of the fetal thyroid. Strategies for preventing unwanted administrations of radiopharmaceuticals to these patients, and for strategies for mitigating radiation doses, should an unwanted administration occur, are discussed.
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