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Yoshiura T, Masuda T, Sato T, Kikuhara Y, Kobayashi Y, Ishibashi T, Oku T, Yoshida M, Funama Y. [Coronary Artery Visualization by Using the 64-row MDCT in Pediatric Patients]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2022; 78:856-863. [PMID: 35858799 DOI: 10.6009/jjrt.2022-1194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
PURPOSE We retrospectively evaluated the visualization of pediatric coronary computed tomography angiography (CCTA) images by using the 64-detector row CT scanner between the electrocardiogram-gated helical scan and non-electrocardiogram-gated helical scan. METHODS From January 2015 to March 2019, 100 children who underwent CT angiography examination were retrospectively enrolled. Group A consisted of 50 patients with electrocardiogram-gated helical scan. Group B consisted of 50 patients with non-electrocardiogram-gated helical scan. All patients were scanned using a 64-detector row CT scanner (LightSpeed VCT), and helical scans were acquired. The CT scanning parameters were 0.4-s rotation, 0.625-mm slice thickness, 0.24 (group A) helical pitch (beam pitch), 1.375 (group B) helical pitch (beam pitch), 80 kVp, and 50-300 mA (noise index 40). A retrospective method was used for electrocardiogram gated. To compare the radiation dose, CT volume dose index (CTDIvol) and dose length product (DLP) displayed on the console were recorded. The visualization scores of the coronary artery images were compared between each group. RESULTS In group A, CTDIvol and DLP values were 6.74 (1.05-11.97) mGy and 79.87 (15.90-146.65) mGy·cm, respectively. In group B, CTDIvol and DLP values were 0.51 (0.39-0.95) mGy and 8.15 (6.30-17.50) mGy·cm, respectively. There were significant differences in CTDIvol and DLP values between both groups (p<0.05). The visualization rates for the proximal and distal coronary arteries were 88% and 54% for the right coronary artery, 84% and 58% for the left anterior descending artery, and 66% and 30% for the left circumflex branch in group A, respectively. The visualization rates for the proximal and distal coronary arteries were 52% and 0% for the right coronary artery, 56% and 0% for the left anterior descending artery, and 32% and 0% for the left circumflex branch in group B. CONCLUSION In 64-row multidetector computed tomography (MDCT), the visualization rates for the proximal and distal coronary arteries were significantly higher in the electrocardiogram-gated scan, but the exposure dose was several times higher in the pediatric CCTA. For accurate diagnosis in pediatric coronary arteries, electrocardiogram-gated helical scan should be performed.
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Affiliation(s)
- Takayuki Yoshiura
- Department of Medical Technology, Tsuchiya General Hospital
- Graduate School of Health Sciences, Kumamoto University
| | - Takanori Masuda
- Department of Medical Technology, Tsuchiya General Hospital (Current address: Department of Radiological Technology, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare)
| | - Tomoyasu Sato
- Department of Medical Technology, Tsuchiya General Hospital
| | | | | | | | - Takayuki Oku
- Department of Medical Technology, Tsuchiya General Hospital
| | - Masato Yoshida
- Department of Medical Technology, Tsuchiya General Hospital
| | - Yoshinori Funama
- Department of Medical Physics, Faculty of Life Sciences, Kumamoto University
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Gavriilaki E, Tsiftsoglou SA, Touloumenidou T, Farmaki E, Panagopoulou P, Michailidou E, Koravou EE, Mavrikou I, Iosifidis E, Tsiatsiou O, Papadimitriou E, Papadopoulou-Alataki E, Papayanni PG, Varelas C, Kokkoris S, Papalexandri A, Fotoulaki M, Galli-Tsinopoulou A, Zafeiriou D, Roilides E, Sakellari I, Anagnostopoulos A, Tragiannidis A. Targeted Genotyping of MIS-C Patients Reveals a Potential Alternative Pathway Mediated Complement Dysregulation during COVID-19 Infection. Curr Issues Mol Biol 2022; 44:2811-2824. [PMID: 35877417 PMCID: PMC9325260 DOI: 10.3390/cimb44070193] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/21/2022] [Accepted: 06/24/2022] [Indexed: 11/24/2022] Open
Abstract
Complement dysregulation has been documented in adults with COVID-19 and implicated in relevant pediatric inflammatory responses against SARS-CoV-2. We propose that signatures of complement missense coding SNPs associated with dysregulation could also be identified in children with multisystem inflammatory syndrome (MIS-C). We investigated 71 pediatric patients with RT-PCR validated SARS-CoV-2 hospitalized in pediatric COVID-19 care units (November 2020–March 2021) in three major groups. Seven (7) patients suffered from MIS-C (MIS-C group), 32 suffered from COVID-19 and were hospitalized (admitted group), whereas 32 suffered from COVID-19, but were sent home. All patients survived and were genotyped for variations in the C3, C5, CFB, CFD, CFH, CFHR1, CFI, CD46, CD55, MASP1, MASP2, MBL2, COLEC11, FCN1, and FCN3 genes. Upon evaluation of the missense coding SNP distribution patterns along the three study groups, we noticed similarities, but also considerably increased frequencies of the alternative pathway (AP) associated with SNPs rs12614 CFB, rs1061170, and rs1065489 CFH in the MIS-C patients. Our analysis suggests that the corresponding substitutions potentially reduce the C3b-inactivation efficiency and promote slower and weaker AP C3bBb pre-convertase assembly on virions. Under these circumstances, the complement AP opsonization capacity may be impaired, leading to compromised immune clearance and systemic inflammation in the MIS-C syndrome.
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Affiliation(s)
- Eleni Gavriilaki
- Hematology Department & BMT Unit, G Papanicolaou Hospital, 57010 Thessaloniki, Greece; (T.T.); (E.-E.K.); (I.M.); (P.G.P.); (C.V.); (A.P.); (I.S.); (A.A.)
- Correspondence: (E.G.); (S.A.T.); Tel.: +30-697-3841-671 (E.G.); +30-697-9568-269 (S.A.T.)
| | - Stefanos A. Tsiftsoglou
- Laboratory of Pharmacology, Department of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Correspondence: (E.G.); (S.A.T.); Tel.: +30-697-3841-671 (E.G.); +30-697-9568-269 (S.A.T.)
| | - Tasoula Touloumenidou
- Hematology Department & BMT Unit, G Papanicolaou Hospital, 57010 Thessaloniki, Greece; (T.T.); (E.-E.K.); (I.M.); (P.G.P.); (C.V.); (A.P.); (I.S.); (A.A.)
| | - Evangelia Farmaki
- 1st Pediatric Department, Aristotle University of Thessaloniki, Hipporkation Hospital, 54642 Thessaloniki, Greece; (E.F.); (E.P.); (D.Z.)
| | - Paraskevi Panagopoulou
- 4th Pediatric Department, Aristotle University of Thessaloniki, Papageorgiou Hospital, 56429 Thessaloniki, Greece; (P.P.); (E.P.-A.); (M.F.)
| | - Elissavet Michailidou
- 3rd Pediatric Department, Aristotle University of Thessaloniki, Hippokration Hospital, 54642 Thessaloniki, Greece; (E.M.); (E.I.); (O.T.); (E.R.)
| | - Evaggelia-Evdoxia Koravou
- Hematology Department & BMT Unit, G Papanicolaou Hospital, 57010 Thessaloniki, Greece; (T.T.); (E.-E.K.); (I.M.); (P.G.P.); (C.V.); (A.P.); (I.S.); (A.A.)
| | - Ioulia Mavrikou
- Hematology Department & BMT Unit, G Papanicolaou Hospital, 57010 Thessaloniki, Greece; (T.T.); (E.-E.K.); (I.M.); (P.G.P.); (C.V.); (A.P.); (I.S.); (A.A.)
| | - Elias Iosifidis
- 3rd Pediatric Department, Aristotle University of Thessaloniki, Hippokration Hospital, 54642 Thessaloniki, Greece; (E.M.); (E.I.); (O.T.); (E.R.)
| | - Olga Tsiatsiou
- 3rd Pediatric Department, Aristotle University of Thessaloniki, Hippokration Hospital, 54642 Thessaloniki, Greece; (E.M.); (E.I.); (O.T.); (E.R.)
| | - Eleni Papadimitriou
- 1st Pediatric Department, Aristotle University of Thessaloniki, Hipporkation Hospital, 54642 Thessaloniki, Greece; (E.F.); (E.P.); (D.Z.)
| | - Efimia Papadopoulou-Alataki
- 4th Pediatric Department, Aristotle University of Thessaloniki, Papageorgiou Hospital, 56429 Thessaloniki, Greece; (P.P.); (E.P.-A.); (M.F.)
| | - Penelope Georgia Papayanni
- Hematology Department & BMT Unit, G Papanicolaou Hospital, 57010 Thessaloniki, Greece; (T.T.); (E.-E.K.); (I.M.); (P.G.P.); (C.V.); (A.P.); (I.S.); (A.A.)
| | - Christos Varelas
- Hematology Department & BMT Unit, G Papanicolaou Hospital, 57010 Thessaloniki, Greece; (T.T.); (E.-E.K.); (I.M.); (P.G.P.); (C.V.); (A.P.); (I.S.); (A.A.)
| | - Styliani Kokkoris
- Laboratory of Hematology and Hospital—Blood Transfusion Unit, Medical School, University General Hospital “Attikon”, NKUA, 12462 Athens, Greece;
| | - Apostolia Papalexandri
- Hematology Department & BMT Unit, G Papanicolaou Hospital, 57010 Thessaloniki, Greece; (T.T.); (E.-E.K.); (I.M.); (P.G.P.); (C.V.); (A.P.); (I.S.); (A.A.)
| | - Maria Fotoulaki
- 4th Pediatric Department, Aristotle University of Thessaloniki, Papageorgiou Hospital, 56429 Thessaloniki, Greece; (P.P.); (E.P.-A.); (M.F.)
| | - Assimina Galli-Tsinopoulou
- 2nd Pediatric Department, Aristotle University of Thessaloniki, AHEPA Hospital, 54621 Thessaloniki, Greece; (A.G.-T.); (A.T.)
| | - Dimitrios Zafeiriou
- 1st Pediatric Department, Aristotle University of Thessaloniki, Hipporkation Hospital, 54642 Thessaloniki, Greece; (E.F.); (E.P.); (D.Z.)
| | - Emmanuel Roilides
- 3rd Pediatric Department, Aristotle University of Thessaloniki, Hippokration Hospital, 54642 Thessaloniki, Greece; (E.M.); (E.I.); (O.T.); (E.R.)
| | - Ioanna Sakellari
- Hematology Department & BMT Unit, G Papanicolaou Hospital, 57010 Thessaloniki, Greece; (T.T.); (E.-E.K.); (I.M.); (P.G.P.); (C.V.); (A.P.); (I.S.); (A.A.)
| | - Achilles Anagnostopoulos
- Hematology Department & BMT Unit, G Papanicolaou Hospital, 57010 Thessaloniki, Greece; (T.T.); (E.-E.K.); (I.M.); (P.G.P.); (C.V.); (A.P.); (I.S.); (A.A.)
| | - Athanasios Tragiannidis
- 2nd Pediatric Department, Aristotle University of Thessaloniki, AHEPA Hospital, 54621 Thessaloniki, Greece; (A.G.-T.); (A.T.)
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