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van de Weijer T, van der Meer WL, Moonen RPM, van Nijnatten TJA, Gietema HA, Mitea C, van der Pol JAJ, Wildberger JE, Mottaghy FM. Limited Additional Value of a Chest CT in Whole-Body Staging with PET-MRI: A Retrospective Cohort Study. Cancers (Basel) 2024; 16:2265. [PMID: 38927970 PMCID: PMC11201796 DOI: 10.3390/cancers16122265] [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: 05/15/2024] [Revised: 06/04/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024] Open
Abstract
Hybrid PET-MRI systems are being used more frequently. One of the drawbacks of PET-MRI imaging is its inferiority in detecting lung nodules, so it is often combined with a computed tomography (CT) of the chest. However, chest CT often detects additional, indeterminate lung nodules. The objective of this study was to assess the sensitivity of detecting metastatic versus indeterminate nodules with PET-MRI compared to chest CT. A total of 328 patients were included. All patients had a PET/MRI whole-body scan for (re)staging of cancer combined with an unenhanced chest CT performed at our center between 2014 and 2020. Patients had at least a two-year follow-up. Six percent of the patients had lung metastases at initial staging. The sensitivity and specificity of PET-MRI for detecting lung metastases were 85% and 100%, respectively. The incidence of indeterminate lung nodules on chest CT was 30%. The sensitivity of PET-MRI to detect indeterminate lung nodules was poor (23.0%). The average size of the indeterminate lung nodules detected on PET-MRI was 7 ± 4 mm, and the missed indeterminate nodules on PET-MRI were 4 ± 1 mm (p < 0.001). The detection of metastatic lung nodules is fairly good with PET-MRI, whereas the sensitivity of PET-MRI for detecting indeterminate lung nodules is size-dependent. This may be an advantage, limiting unnecessary follow-up of small, indeterminate lung nodules while adequately detecting metastases.
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Affiliation(s)
- Tineke van de Weijer
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Center, P. Debeylaan 25, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands; (T.v.d.W.); (W.L.v.d.M.); (R.P.M.M.); (T.J.A.v.N.); (H.A.G.); (J.A.J.v.d.P.); (J.E.W.)
- School of Nutrition and Translational Research in Metabolism (NUTRIM), 6200 MD Maastricht, The Netherlands
| | - Wilhelmina L. van der Meer
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Center, P. Debeylaan 25, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands; (T.v.d.W.); (W.L.v.d.M.); (R.P.M.M.); (T.J.A.v.N.); (H.A.G.); (J.A.J.v.d.P.); (J.E.W.)
| | - Rik P. M. Moonen
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Center, P. Debeylaan 25, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands; (T.v.d.W.); (W.L.v.d.M.); (R.P.M.M.); (T.J.A.v.N.); (H.A.G.); (J.A.J.v.d.P.); (J.E.W.)
| | - Thiemo J. A. van Nijnatten
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Center, P. Debeylaan 25, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands; (T.v.d.W.); (W.L.v.d.M.); (R.P.M.M.); (T.J.A.v.N.); (H.A.G.); (J.A.J.v.d.P.); (J.E.W.)
- School for Oncology and Reproduction (GROW), 6200 MD Maastricht, The Netherlands
| | - Hester A. Gietema
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Center, P. Debeylaan 25, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands; (T.v.d.W.); (W.L.v.d.M.); (R.P.M.M.); (T.J.A.v.N.); (H.A.G.); (J.A.J.v.d.P.); (J.E.W.)
- School for Oncology and Reproduction (GROW), 6200 MD Maastricht, The Netherlands
| | - Cristina Mitea
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Center, P. Debeylaan 25, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands; (T.v.d.W.); (W.L.v.d.M.); (R.P.M.M.); (T.J.A.v.N.); (H.A.G.); (J.A.J.v.d.P.); (J.E.W.)
- School for Oncology and Reproduction (GROW), 6200 MD Maastricht, The Netherlands
| | - Jochem A. J. van der Pol
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Center, P. Debeylaan 25, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands; (T.v.d.W.); (W.L.v.d.M.); (R.P.M.M.); (T.J.A.v.N.); (H.A.G.); (J.A.J.v.d.P.); (J.E.W.)
- School for Cardiovascular Diseases (CARIM), 6202 AZ Maastricht, The Netherlands
| | - Joachim E. Wildberger
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Center, P. Debeylaan 25, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands; (T.v.d.W.); (W.L.v.d.M.); (R.P.M.M.); (T.J.A.v.N.); (H.A.G.); (J.A.J.v.d.P.); (J.E.W.)
- School for Oncology and Reproduction (GROW), 6200 MD Maastricht, The Netherlands
| | - Felix M. Mottaghy
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Center, P. Debeylaan 25, P.O. Box 5800, 6202 AZ Maastricht, The Netherlands; (T.v.d.W.); (W.L.v.d.M.); (R.P.M.M.); (T.J.A.v.N.); (H.A.G.); (J.A.J.v.d.P.); (J.E.W.)
- Department of Nuclear Medicine, University Hospital, RWTH Aachen University, 52074 Aachen, Germany
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Xu P, Meersmann T, Wang J, Wang C. Review of oxygen-enhanced lung mri: Pulse sequences for image acquisition and T 1 measurement. Med Phys 2023; 50:5987-6007. [PMID: 37345214 DOI: 10.1002/mp.16553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 03/23/2023] [Accepted: 05/16/2023] [Indexed: 06/23/2023] Open
Abstract
Oxygen-enhanced MR imaging (OE-MRI) is a special proton imaging technique that can be performed without modifying the scanner hardware. Many fundamental studies have been conducted following the initial reporting of this technique in 1996, illustrating the high potential for its clinical application. This review aims to summarise and analyse current pulse sequences and T1 measurement methods for OE-MRI, including fundamental theories, existing pulse sequences applied to OE-MRI acquisition and T1 mapping. Wash-in and wash-out time identify lung function and are sensitive to ventilation; thus, dynamic OE-MRI is also discussed in this review. We compare OE-MRI with the primary competitive technique, hyperpolarised gas MRI. Finally, an overview of lower-field applications of OE-MRI is highlighted, as relatively recent publications demonstrated positive results. Lower-field OE-MRI, which is lower than 1.5 T, could be an alternative modality for detecting lung diseases. This educational review is aimed at researchers who want a quick summary of the steps needed to perform pulmonary OE-MRI with a particular focus on sequence design, settings, and quantification methods.
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Affiliation(s)
- Pengfei Xu
- Department of Electrical and Electronic Engineering, Faculty of Science and Engineering, University of Nottingham Ningbo China, Ningbo, China
| | - Thomas Meersmann
- Sir Peter Mansfield Magnetic Imaging Centre, University of Nottingham, Nottingham, UK
- Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute, Ningbo, China
| | - Jing Wang
- Department of Electrical and Electronic Engineering, Faculty of Science and Engineering, University of Nottingham Ningbo China, Ningbo, China
- Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute, Ningbo, China
| | - Chengbo Wang
- Department of Electrical and Electronic Engineering, Faculty of Science and Engineering, University of Nottingham Ningbo China, Ningbo, China
- Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute, Ningbo, China
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Fauveau V, Jacobi A, Bernheim A, Chung M, Benkert T, Fayad ZA, Feng L. Performance of spiral UTE-MRI of the lung in post-COVID patients. Magn Reson Imaging 2023; 96:135-143. [PMID: 36503014 PMCID: PMC9731813 DOI: 10.1016/j.mri.2022.12.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/18/2022] [Accepted: 12/01/2022] [Indexed: 12/13/2022]
Abstract
Patients recovered from COVID-19 may develop long-COVID symptoms in the lung. For this patient population (post-COVID patients), they may benefit from longitudinal, radiation-free lung MRI exams for monitoring lung lesion development and progression. The purpose of this study was to investigate the performance of a spiral ultrashort echo time MRI sequence (Spiral-VIBE-UTE) in a cohort of post-COVID patients in comparison with CT and to compare image quality obtained using different spiral MRI acquisition protocols. Lung MRI was performed in 36 post-COVID patients with different acquisition protocols, including different spiral sampling reordering schemes (line in partition or partition in line) and different breath-hold positions (inspiration or expiration). Three experienced chest radiologists independently scored all the MR images for different pulmonary structures. Lung MR images from spiral acquisition protocol that received the highest image quality scores were also compared against corresponding CT images in 27 patients for evaluating diagnostic image quality and lesion identification. Spiral-VIBE-UTE MRI acquired with the line in partition reordering scheme in an inspiratory breath-holding position achieved the highest image quality scores (score range = 2.17-3.69) compared to others (score range = 1.7-3.29). Compared to corresponding chest CT images, three readers found that 81.5% (22 out of 27), 81.5% (22 out of 27) and 37% (10 out of 27) of the MR images were useful, respectively. Meanwhile, they all agreed that MRI could identify significant lesions in the lungs. The Spiral-VIBE-UTE sequence allows for fast imaging of the lung in a single breath hold. It could be a valuable tool for lung imaging without radiation and could provide great value for managing different lung diseases including assessment of post-COVID lesions.
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Affiliation(s)
- Valentin Fauveau
- BioMedical Engineering and Imaging Institute (BMEII), Icahn School of Medicine at Mount Sinai, New York, USA
| | - Adam Jacobi
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Adam Bernheim
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Michael Chung
- Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Thomas Benkert
- MR Application Predevelopment, Siemens Healthcare GmbH, Erlangen, Germany
| | - Zahi A Fayad
- BioMedical Engineering and Imaging Institute (BMEII), Icahn School of Medicine at Mount Sinai, New York, USA; Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Li Feng
- BioMedical Engineering and Imaging Institute (BMEII), Icahn School of Medicine at Mount Sinai, New York, USA; Department of Radiology, Icahn School of Medicine at Mount Sinai, New York, USA.
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Malocclusion in children with speech sound disorders and motor speech involvement: a cross-sectional clinical study in Swedish children. Eur Arch Paediatr Dent 2022; 23:619-628. [PMID: 35776286 PMCID: PMC9338153 DOI: 10.1007/s40368-022-00728-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 06/10/2022] [Indexed: 11/27/2022]
Abstract
OBJECTIVES The objectives of this study were to investigate the occurrence, types and severity of malocclusions in children with speech sound disorder (SSD) persisting after 6 years of age, and to compare these findings to a control group of children with typical speech development (TSD). METHODS In total, 105 children were included: 61 with SSD and motor speech involvement (mean age 8:5 ± 2:8 years; range 6:0-16:7 years, 14 girls and 47 boys) and 44 children with TSD (mean age 8:8 ± 1:6; range 6:0-12:2 years, 19 girls and 25 boys). Extra-oral and intra-oral examinations were performed by an orthodontist. The severity of malocclusion was scored using the IOTN-DHC Index. RESULTS There were differences between the SSD and TSD groups with regard to the prevalence, type, and severity of malocclusions; 61% of the children in the SSD group had a malocclusion, as compared to 29% in the TSD group. In addition, the malocclusions in the SSD group were rated as more severe. Functional posterior crossbite and habitual lateral and/or anterior shift appeared more frequently in the SSD group. Class III malocclusion, anterior open bite and scissors bite were found only in the SSD group. CONCLUSION Children with SSD and motor speech involvement are more likely to have a higher prevalence of and more severe malocclusions than children with TSD.
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