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Martín-Noguerol T, Santos-Armentia E, Fernandez-Palomino J, López-Úbeda P, Paulano-Godino F, Luna A. Role of advanced MRI sequences for thyroid lesions assessment. A narrative review. Eur J Radiol 2024; 176:111499. [PMID: 38735157 DOI: 10.1016/j.ejrad.2024.111499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 04/12/2024] [Accepted: 05/05/2024] [Indexed: 05/14/2024]
Abstract
Despite not being the first imaging modality for thyroid gland assessment, Magnetic Resonance Imaging (MRI), thanks to its optimal tissue contrast and spatial resolution, has provided some advancements in detecting and characterizing thyroid abnormalities. Recent research has been focused on improving MRI sequences and employing advanced techniques for a more comprehensive understanding of thyroid pathology. Although not yet standard practice, advanced MRI sequences have shown high accuracy in preliminary studies, correlating well with histopathological results. They particularly show promise in determining malignancy risk in thyroid lesions, which may reduce the need for invasive procedures like biopsies. In this line, functional MRI sequences like Diffusion Weighted Imaging (DWI), Dynamic Contrast-Enhanced MRI (DCE-MRI), and Arterial Spin Labeling (ASL) have demonstrated their potential usefulness in evaluating both diffuse thyroid conditions and focal lesions. Multicompartmental DWI models, such as Intravoxel Incoherent Motion (IVIM) and Diffusion Kurtosis Imaging (DKI), and novel methods like Amide Proton Transfer (APT) imaging or artificial intelligence (AI)-based analyses are being explored for their potential valuable insights into thyroid diseases. This manuscript reviews the critical physical principles and technical requirements for optimal functional MRI sequences of the thyroid and assesses the clinical utility of each technique. It also considers future prospects in the context of advanced MR thyroid imaging and analyzes the current role of advanced MRI sequences in routine practice.
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Affiliation(s)
| | | | | | | | | | - Antonio Luna
- MRI unit, Radiology department. HT medica, Carmelo Torres 2, 23007 Jaén, Spain.
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Hänscheid H, Lassmann M, Verburg FA. Determinants of target absorbed dose in radionuclide therapy. Z Med Phys 2023; 33:82-90. [PMID: 36376202 PMCID: PMC10068538 DOI: 10.1016/j.zemedi.2022.10.001] [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: 07/27/2022] [Revised: 09/28/2022] [Accepted: 10/04/2022] [Indexed: 11/13/2022]
Abstract
In radionuclide therapy, activity kinetics in tissues determine the absorbed doses administered and thus efficacy and side effects of treatment. The objective of this work was to derive expressions for the parameters affecting the absorbed dose to a target tissue for first-order activity kinetics. The activity uptake results from contributions from the first-pass activity flow through the target tissue preceding systemic equilibration and uptake after distribution of the administered compound in the body. The absorbed dose from uptake after equilibration is the product of the mean energy deposited per decay in the target tissue, the time integral of the plasma activity concentration, the plasma volume flow per unit target tissue mass, the probability of activity removal during passage, and the mean lifetime of activity in the target tissue. Quantitative analysis of the determinants of absorbed dose exemplarily for radioiodine therapy indicates that the high uptake often observed in Graves' disease must be associated with high tissue perfusion and removal probability and that administration of stable iodine increases mean lifetime. For therapies with long residence times of the active compound in the blood, such as radioiodine therapy, the contribution of the first-pass is small compared with uptake after equilibration. The relative first-pass contribution is higher for agents that are rapidly eliminated from the blood pool, such as radiolabelled somatostatin analogues, and may dominate after arterial application. Understanding the determining parameters in radionuclide therapy reveals dose-limiting factors and opens up opportunities to optimise and individualize therapy, potentially improving treatment success rates.
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Affiliation(s)
- Heribert Hänscheid
- Department of Nuclear Medicine, University Hospital Würzburg, Würzburg, Germany.
| | - Michael Lassmann
- Department of Nuclear Medicine, University Hospital Würzburg, Würzburg, Germany
| | - Frederik A Verburg
- Department of Radiology and Nuclear Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands
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Arterial spin labeling and diffusion-weighted imaging for identification of retropharyngeal lymph nodes in patients with nasopharyngeal carcinoma. Cancer Imaging 2022; 22:40. [PMID: 35978445 PMCID: PMC9387018 DOI: 10.1186/s40644-022-00480-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 08/01/2022] [Indexed: 11/19/2022] Open
Abstract
Background To evaluate the parameters derived from arterial spin labeling (ASL) and multi-b-value diffusion-weighted imaging (DWI) for differentiating retropharyngeal lymph nodes (RLNs) in patients with nasopharyngeal carcinoma (NPC). Methods This prospective study included 50 newly diagnosed NPC and 23 healthy control (HC) participants. RLNs of NPC were diagnosed according to the follow-up MRI after radiotherapy. Parameters derived from ASL and multi-b-value DWI, and RLNs axial size on pre-treatment MRI among groups were compared. Receiver operating characteristic curve (ROC) was used to analyze the diagnostic efficiency. Results A total of 133 RLNs were collected and divided into a metastatic group (n = 71) and two non-metastatic groups (n = 62, including 29 nodes from NPC and 33 nodes from HC). The axial size, blood flow (BF), and apparent diffusion coefficient (ADC) of RLNs were significantly different between the metastasis and the non-metastasis group. For NPC patients with a short axis < 5 mm or < 6 mm, or long axis < 7 mm, if BF > 54 mL/min/100 g or ADC ≤ 0.95 × 10−3 mm2/s, the RLNs were still considered metastatic. Compared with the index alone, a combination of size and functional parameters could improve the accuracy significantly, except the long axis combined with ADC; especially, combined size with BF exhibited better performance with an accuracy of 91.00–92.00%. Conclusions ASL and multi-b-value DWI could help determine the N stage of NPC, while the BF combination with RLNs size may significantly improve the diagnostic efficiency. Supplementary Information The online version contains supplementary material available at 10.1186/s40644-022-00480-4.
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Pseudocontinuous Arterial Spin Labeling: Clinical Applications and Usefulness in Head and Neck Entities. Cancers (Basel) 2022; 14:cancers14163872. [PMID: 36010866 PMCID: PMC9405982 DOI: 10.3390/cancers14163872] [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: 07/01/2022] [Revised: 08/01/2022] [Accepted: 08/09/2022] [Indexed: 12/02/2022] Open
Abstract
Simple Summary Conventional imaging methods, such as ultrasonography, computed tomography, and magnetic resonance imaging may be inadequate to accurately diagnose lesions of the head and neck because they vary widely. Recently, the arterial spin labeling technique, especially pseudocontinuous arterial spin labeling (pCASL) with the three-dimensional (3D) readout method, has been dramatically developed to improve diagnostic performance for lesion differentiation, which can show prominent blood flow characteristics. Here, we demonstrate the clinical usefulness of 3D pCASL for diagnosing various entities, including inflammatory lesions, hypervascular lesions, and neoplasms in the head and neck, for evaluating squamous cell carcinoma (SCC) treatment responses, and for predicting SCC prognosis. Abstract As functional magnetic resonance imaging, arterial spin labeling (ASL) techniques have been developed to provide quantitative tissue blood flow measurements, which can improve the performance of lesion diagnosis. ASL does not require contrast agents, thus, it can be applied to a variety of patients regardless of renal impairments and contrast agent allergic reactions. The clinical implementation of head and neck lesions is limited, although, in recent years, ASL has been increasingly utilized in brain lesions. Here, we review the development of the ASL techniques, including pseudocontinuous ASL (pCASL). We compare readout methods between three-dimensional (3D) turbo spin-echo and 2D echo planar pCASL for the clinical applications of pCASL to head and neck lesions. We demonstrate the clinical usefulness of 3D pCASL for diagnosing various entities, including inflammatory lesions, hypervascular lesions, and neoplasms; for evaluating squamous cell carcinoma (SCC) treatment responses, and for predicting SCC prognosis.
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Li L, Zhang A, Chen D, Taragin BH, Luo X. Preliminary study of sound touch elastography in diffuse thyroid disease in children. Front Pediatr 2022; 10:964413. [PMID: 36275048 PMCID: PMC9582431 DOI: 10.3389/fped.2022.964413] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 09/13/2022] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE The purpose of this study was to evaluate the use of sound touch elastography (STE) in conjunction with conventional ultrasound in the differential diagnosis of diffuse thyroid disease (DTD) and normal thyroid in children. METHODS Studies performed on 62 children with DTD and 30 normal volunteers were reviewed. Standard gray scale ultrasound, Doppler ultrasound and STE of the examinees, and the serum test results of children with DTD were collected, analyzed and compared. RESULTS The STE-Mean values in the Graves' disease (GD) group, Hashimoto's thyroiditis (HT) group, and normal control group, respectively, were 19.35 ± 5.00 kPa, 19.43 ± 6.06 kPa, and 11.24 ± 1.99 kPa. With an area under the ROC curve (AUC) of 0.945, STE-Mean values differentiated DTD from normal children. The peak systolic velocity (PSV) of the superior thyroid artery separated DTD from normal children and AUC from children with GD and HT, respectively, and was 0.992 and 0.864. The PSV of superior thyroid artery revealed a somewhat favorable connection with FT3 and FT4. CONCLUSION The STE results revealed that thyroid stiffness was higher in children with DTD than in normal children, but further differentiation into GD and HT subgroups lacked specificity, and the superior thyroid artery flow velocity might be a good supplement to distinguish both.
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Affiliation(s)
- Lin Li
- Department of Ultrasonography, Suining Central Hospital, Suining, China
| | - Aimei Zhang
- Department of Ultrasonography, Suining Central Hospital, Suining, China
| | - Dan Chen
- Department of Ultrasonography, Suining Central Hospital, Suining, China
| | - Benjamin H Taragin
- Department of Radiology, Samson Assuta Ashdod University Hospital, Ashdod, Israel
| | - Xiaoyong Luo
- Department of Ultrasonography, Suining Central Hospital, Suining, China
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Martín-Noguerol T, Kirsch CFE, Montesinos P, Luna A. Arterial spin labeling for head and neck lesion assessment: technical adjustments and clinical applications. Neuroradiology 2021; 63:1969-1983. [PMID: 34427708 DOI: 10.1007/s00234-021-02772-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 07/12/2021] [Indexed: 12/21/2022]
Abstract
PURPOSE Despite, currently, "state-of-the-art" magnetic resonance imaging (MRI) protocols for head and neck (H&N) lesion assessment incorporate perfusion sequences, these acquisitions require the intravenous injection of exogenous gadolinium-based contrast agents (GBCAs), which may have potential risks. Alternative techniques such as arterial spin labeling (ASL) can provide quantitative microvascular information similar to conventional perfusion sequences for H&N lesions evaluation, as a potential alternative without GBCA administration. METHODS We review the existing literature and analyze the latest evidence regarding ASL in H&N area highlighting the technical adjustments needed for a proper ASL acquisition in this challenging region for lesion characterization, treatment monitoring, and tumor recurrence detection. RESULTS ASL techniques, widely used for central nervous system lesions evaluation, can be also applied to the H&N region. Technical adjustments, especially regarding post-labeling delay, are mandatory to obtain robust and reproducible results. Several studies have demonstrated the feasibility of ASL in the H&N area including the orbits, skull base, paranasal sinuses, upper airway, salivary glands, and thyroid. CONCLUSION ASL is a feasible technique for the assessment of H&N lesions without the need of GBCAs. This manuscript reviews ASL's physical basis, emphasizing the technical adjustments necessary for proper ASL acquisition in this unique and challenging anatomical region, and the main applications in evaluating H&N lesions.
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Affiliation(s)
| | - Claudia F E Kirsch
- Department of Radiology, Northwell Health, Zucker Hofstra School of Medicine At Northwell, North Shore University Hospital, 300 Community Drive, Manhasset, NY, 11030, USA
| | - Paula Montesinos
- Philips Iberia, Calle de María de Portugal, 1, 28050, Madrid, Spain
| | - Antonio Luna
- MRI Unit, Radiology Department, HT Medica, Carmelo Torres 2, 23007, Jaén, Spain
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Cortese L, Lo Presti G, Zanoletti M, Aranda G, Buttafava M, Contini D, Dalla Mora A, Dehghani H, Di Sieno L, de Fraguier S, Hanzu FA, Mora Porta M, Nguyen-Dinh A, Renna M, Rosinski B, Squarcia M, Tosi A, Weigel UM, Wojtkiewicz S, Durduran T. The LUCA device: a multi-modal platform combining diffuse optics and ultrasound imaging for thyroid cancer screening. BIOMEDICAL OPTICS EXPRESS 2021; 12:3392-3409. [PMID: 34221667 PMCID: PMC8221941 DOI: 10.1364/boe.416561] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 05/07/2021] [Accepted: 05/07/2021] [Indexed: 05/07/2023]
Abstract
We present the LUCA device, a multi-modal platform combining eight-wavelength near infrared time resolved spectroscopy, sixteen-channel diffuse correlation spectroscopy and a clinical ultrasound in a single device. By simultaneously measuring the tissue hemodynamics and performing ultrasound imaging, this platform aims to tackle the low specificity and sensitivity of the current thyroid cancer diagnosis techniques, improving the screening of thyroid nodules. Here, we show a detailed description of the device, components and modules. Furthermore, we show the device tests performed through well established protocols for phantom validation, and the performance assessment for in vivo. The characterization tests demonstrate that LUCA device is capable of performing high quality measurements, with a precision in determining in vivo tissue optical and dynamic properties of better than 3%, and a reproducibility of better than 10% after ultrasound-guided probe repositioning, even with low photon count-rates, making it suitable for a wide variety of clinical applications.
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Affiliation(s)
- Lorenzo Cortese
- ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain
- These authors equally contributed to this work. Authors are listed in alphabetical order except for the first three and the last
| | - Giuseppe Lo Presti
- ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain
- These authors equally contributed to this work. Authors are listed in alphabetical order except for the first three and the last
| | - Marta Zanoletti
- Politecnico di Milano, Dipartimento di Fisica, 20133 Milano, Italy
| | - Gloria Aranda
- IDIBAPS, Fundació Clínic per la Recerca Biomèdica, Barcelona, Spain
| | - Mauro Buttafava
- Politecnico di Milano, Dipartimento di Elettronica Informazione e Bioingegneria, 20133 Milano, Italy
| | - Davide Contini
- Politecnico di Milano, Dipartimento di Fisica, 20133 Milano, Italy
| | | | - Hamid Dehghani
- University of Birmingham, School of Computer Science, Edgbaston, Birmingham, B15 2TT, UK
| | - Laura Di Sieno
- Politecnico di Milano, Dipartimento di Fisica, 20133 Milano, Italy
| | | | - Felicia A. Hanzu
- IDIBAPS, Fundació Clínic per la Recerca Biomèdica, Barcelona, Spain
- Endocrinology and Nutrition Department, Hospital Clínic of Barcelona, Barcelona, Spain
- Centro de Investigación Biomèdica en Red Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Spain
| | - Mireia Mora Porta
- IDIBAPS, Fundació Clínic per la Recerca Biomèdica, Barcelona, Spain
- Endocrinology and Nutrition Department, Hospital Clínic of Barcelona, Barcelona, Spain
- Centro de Investigación Biomèdica en Red Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Spain
| | | | - Marco Renna
- Politecnico di Milano, Dipartimento di Elettronica Informazione e Bioingegneria, 20133 Milano, Italy
- Athinoula A. Martinos Center for Biomedical Imaging, MGH, Harvard Medical School, Charlestown, MA 02129, USA
| | | | - Mattia Squarcia
- IDIBAPS, Fundació Clínic per la Recerca Biomèdica, Barcelona, Spain
- Neuroradiology Department, Hospital Clínic of Barcelona, Barcelona, Spain
| | - Alberto Tosi
- Politecnico di Milano, Dipartimento di Elettronica Informazione e Bioingegneria, 20133 Milano, Italy
| | - Udo M. Weigel
- HemoPhotonics S.L., 08860 Castelldefels (Barcelona), Spain
| | - Stanislaw Wojtkiewicz
- University of Birmingham, School of Computer Science, Edgbaston, Birmingham, B15 2TT, UK
| | - Turgut Durduran
- ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), 08015 Barcelona, Spain
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Becker AS, Wurnig MC, Finkenstaedt T, Boss A. Non-parametric intravoxel incoherent motion analysis of the thyroid gland. Heliyon 2017; 3:e00239. [PMID: 28180186 PMCID: PMC5288302 DOI: 10.1016/j.heliyon.2017.e00239] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 01/12/2017] [Accepted: 01/24/2017] [Indexed: 02/04/2023] Open
Abstract
Purpose To implement a protocol for intravoxel incoherent motion (IVIM) of the thyroid, to determine base parameters in healthy volunteers, and to provide preliminary experience on clinical applicability in one patient. Materials and methods Eight healthy volunteers underwent 3T MRI using a diffusion weighted echo-planar imaging sequence with 12 different b-values between 0–800 s/mm2. The IVIM parameters diffusion coefficient D, pseudo-diffusion coefficient D*, perfusion fraction Fp, and the optimal b-values thresholds were calculated for each thyroid lobe, muscle tissue and the cerebrospinal fluid (CSF) using a non-parametric multi-step algorithm and compared with a Student's t-test. A p-value <0.05 was considered significant. Results Mean values for healthy thyroid tissue were: D 1.01 ± 0.13 × 10−3 mm2/s, D* 71.0 ± 52.5 × 10−3 mm2/s and Fp 17.1 ± 4.2%; for muscle: D 0.50 ± 0.21 × 10−3 mm2/s, D* 58.3 ± 99.2 × 10−3 mm2/s and Fp 26.5 ± 9.3%; and for CSF D 2.18 ± 0.93 × 10−3 mm2/s, D* 99.2 ± 41.2 × 10−3 mm2/s and Fp 74.6 ± 12.7%. The optimal b-value threshold separating diffusion and perfusion effects in thyroid ranged between 0–70 s/mm2. Healthy thyroid tissue showed similar Fp compared to muscle, both lower than CSF. Conclusions The proposed IVIM protocol provides surrogate markers on cellular diffusion restriction and perfusion; thereby providing a more comprehensive description of tissue properties compared to conventional DWI.
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Affiliation(s)
- Anton S Becker
- Institute of Diagnostic and Interventional Radiology, University Hospital of Zurich, Switzerland
| | - Moritz C Wurnig
- Institute of Diagnostic and Interventional Radiology, University Hospital of Zurich, Switzerland
| | - Tim Finkenstaedt
- Institute of Diagnostic and Interventional Radiology, University Hospital of Zurich, Switzerland
| | - Andreas Boss
- Institute of Diagnostic and Interventional Radiology, University Hospital of Zurich, Switzerland
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Yoo RE, Yun TJ, Cho YD, Rhim JH, Kang KM, Choi SH, Kim JH, Kim JE, Kang HS, Sohn CH, Park SW, Han MH. Utility of arterial spin labeling perfusion magnetic resonance imaging in prediction of angiographic vascularity of meningiomas. J Neurosurg 2016; 125:536-43. [PMID: 26824378 DOI: 10.3171/2015.8.jns151211] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
OBJECTIVE Arterial spin labeling perfusion-weighted imaging (ASL-PWI) enables quantification of tissue perfusion without contrast media administration. The aim of this study was to explore whether cerebral blood flow (CBF) from ASL-PWI can reliably predict angiographic vascularity of meningiomas. METHODS Twenty-seven patients with intracranial meningiomas, who had undergone preoperative ASL-PWI and digital subtraction angiography prior to resection, were included. Angiographic vascularity was assessed using a 4-point grading scale and meningiomas were classified into 2 groups: low vascularity (Grades 0 and 1; n = 11) and high vascularity (Grades 2 and 3; n = 16). Absolute CBF, measured at the largest section of the tumor, was normalized to the contralateral gray matter. Correlation between the mean normalized CBF (nCBF) and angiographic vascularity was determined and the mean nCBF values of the 2 groups were compared. Diagnostic performance of the nCBF for differentiating between the 2 groups was assessed. RESULTS The nCBF had a significant positive correlation with angiographic vascularity (ρ = 0.718; p < 0.001). The high-vascularity group had a significantly higher nCBF than the low-vascularity group (3.334 ± 2.768 and 0.909 ± 0.468, respectively; p = 0.003). At the optimal nCBF cutoff value of 1.733, sensitivity and specificity for the differential diagnosis of the 2 groups were 69% (95% CI 41%-89%) and 100% (95% CI 72%-100%), respectively. The area under the receiver operating characteristic curve was 0.875 (p < 0.001). CONCLUSIONS ASL-PWI may provide a reliable and noninvasive means of predicting angiographic vascularity of meningiomas. It may thus assist in selecting potential candidates for preoperative digital subtraction angiography and embolization in clinical practice.
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Affiliation(s)
- Roh-Eul Yoo
- Departments of 1 Radiology and.,Department of Radiology, Seoul National University College of Medicine
| | - Tae Jin Yun
- Departments of 1 Radiology and.,Department of Radiology, Seoul National University College of Medicine
| | - Young Dae Cho
- Departments of 1 Radiology and.,Department of Radiology, Seoul National University College of Medicine
| | | | - Koung Mi Kang
- Departments of 1 Radiology and.,Department of Radiology, Seoul National University College of Medicine
| | - Seung Hong Choi
- Departments of 1 Radiology and.,Department of Radiology, Seoul National University College of Medicine;,Institute of Radiation Medicine, Seoul National University Medical Research Center; and
| | - Ji-Hoon Kim
- Departments of 1 Radiology and.,Department of Radiology, Seoul National University College of Medicine
| | | | | | - Chul-Ho Sohn
- Departments of 1 Radiology and.,Department of Radiology, Seoul National University College of Medicine;,Institute of Radiation Medicine, Seoul National University Medical Research Center; and
| | - Sun-Won Park
- Department of Radiology, Seoul National University College of Medicine;,Department of Radiology, Boramae Medical Center, Seoul, Korea
| | - Moon Hee Han
- Departments of 1 Radiology and.,Department of Radiology, Seoul National University College of Medicine;,Institute of Radiation Medicine, Seoul National University Medical Research Center; and
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Yoo RE, Choi SH. Recent Application of Advanced MR Imaging to Predict Pseudoprogression in High-grade Glioma Patients. Magn Reson Med Sci 2015; 15:165-77. [PMID: 26726012 PMCID: PMC5600053 DOI: 10.2463/mrms.rev.2015-0053] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Pseudoprogression is regarded as a subacute form of treatment-related change with a reported incidence of 20-30%, occurring predominantly within the first three months after the completion of concurrent chemoradiotherapy (CCRT) in glioblastoma multiforme (GBM) patients. Occurrence of progressive lesions on conventional contrast-enhanced MR imaging may also accompany clinical deterioration, posing considerable diagnostic challenges to clinicians and radiologists. False interpretation of treatment-related change as true progression may lead to the cessation of effective first-line therapy (i.e., adjuvant temozolomide) and unnecessary surgery. Increasing awareness of the diagnostic challenge of the phenomenon has underscored the need for better imaging techniques that may aid in differentiating the treatment-related change from true progression. In this review, we discuss the recent applications of advanced MR imaging such as diffusion-weighted and perfusion-weighted imaging in the evaluation of treatment response in high-grade glioma patients and highlight their potential role in differentiating pseudoprogression from true progression.
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Affiliation(s)
- Roh-Eul Yoo
- Department of Radiology, Seoul National University Hospital
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11
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Lin M, Yu X, Ouyang H, Luo D, Zhou C. Consistency of T2WI-FS/ASL fusion images in delineating the volume of nasopharyngeal carcinoma. Sci Rep 2015; 5:18431. [PMID: 26669453 PMCID: PMC4680888 DOI: 10.1038/srep18431] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 11/18/2015] [Indexed: 11/09/2022] Open
Abstract
Tumor extent assessment of nasopharyngeal carcinoma (NPC) is critical for delineating the radiotherapeutic target region. We aimed to investigate the use of the fusion images of fat suppressed T2WI (T2WI-FS) with arterial spin labeling (ASL) in measuring the volume of NPC. Two observers measured the volume of 21 untreated NPC using T2WI-FS, T2WI-FS/ASL (with PLD = 1.0, 1.5 and 2.0 s) fusion images and enhanced T1WI separately. Correlation and consistency were used to compare 1) measurements using T2WI-FS/ASL and T2WI-FS alone, taking enhanced T1WI images as a benchmark; 2) measurements between observers. Significant correlations existed between different series (r: 0.896~0.973). Measurements from the two observers using T2WI-FS/ASL had relatively higher intra-class correlation (ICC) (0.980~0.997) and lower within-subject coefficients of variation (wsCV) (14.76%~22.96%) when compared to using T2WI-FS alone (ICC: 0.978, 0.951, wsCV: 21.61%, 24.21%), while the T2WI-FS/ASL 1.0 s exhibited the best performance. Remarkably high ICC value (0.981~0.996) and relatively low wsCV (9.95%~17.91%) were obtained for the two observers using same series. Compared to those obtained using T2WI-FS alone, measurements made using T2WI-FS/ASL were more consistent with those made using enhanced T1WI. The T2WI-FS/ASL fusion images has the potential to be an alternative to enhanced T1WI, when contrast administration can not be performed.
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Affiliation(s)
- Meng Lin
- Department of Diagnostic Radiology, Cancer Institute &Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Xiaoduo Yu
- Department of Diagnostic Radiology, Cancer Institute &Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Han Ouyang
- Department of Diagnostic Radiology, Cancer Institute &Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Dehong Luo
- Department of Diagnostic Radiology, Cancer Institute &Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Chunwu Zhou
- Department of Diagnostic Radiology, Cancer Institute &Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
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Schraml C, Schwenzer NF, Claussen CD, Martirosian P. Examination of Tissue Perfusion by Arterial Spin Labeling (ASL). CURRENT RADIOLOGY REPORTS 2013. [DOI: 10.1007/s40134-013-0009-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Yoo RE, Choi SH, Cho HR, Kim TM, Lee SH, Park CK, Park SH, Kim IH, Yun TJ, Kim JH, Sohn CH, Han MH, Chang KH. Tumor blood flow from arterial spin labeling perfusion MRI: A key parameter in distinguishing high-grade gliomas from primary cerebral lymphomas, and in predicting genetic biomarkers in high-grade gliomas. J Magn Reson Imaging 2013; 38:852-60. [DOI: 10.1002/jmri.24026] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2012] [Accepted: 12/07/2012] [Indexed: 12/31/2022] Open
Affiliation(s)
- Roh-Eul Yoo
- Department of Radiology; Seoul National University College of Medicine; Seoul Korea
| | - Seung Hong Choi
- Department of Radiology; Seoul National University College of Medicine; Seoul Korea
| | - Hye Rim Cho
- Department of Radiology; Seoul National University College of Medicine; Seoul Korea
- Department of Radiation Applied Life Science; Seoul National University College of Medicine; Seoul Korea
| | - Tae Min Kim
- Department of Internal Medicine; Cancer Research Institute; Seoul National University College of Medicine; Seoul Korea
| | - Se-Hoon Lee
- Department of Internal Medicine; Cancer Research Institute; Seoul National University College of Medicine; Seoul Korea
| | - Chul-Kee Park
- Department of Neurosurgery; Biomedical Research Institute; Seoul National University College of Medicine; Seoul Korea
| | - Sung-Hye Park
- Department of Pathology; Seoul National University College of Medicine; Seoul Korea
| | - Il Han Kim
- Department of Radiation Oncology; Cancer Research Institute; Seoul National University College of Medicine; Seoul Korea
| | - Tae Jin Yun
- Department of Radiology; Seoul National University College of Medicine; Seoul Korea
| | - Ji-Hoon Kim
- Department of Radiology; Seoul National University College of Medicine; Seoul Korea
| | - Chul-Ho Sohn
- Department of Radiology; Seoul National University College of Medicine; Seoul Korea
| | - Moon Hee Han
- Department of Radiology; Seoul National University College of Medicine; Seoul Korea
| | - Kee Hyun Chang
- Department of Radiology; Seoul National University College of Medicine; Seoul Korea
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14
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Sasaki M, Sumi M, Kaneko KI, Ishimaru K, Takahashi H, Nakamura T. Multiparametric MR imaging for differentiating between benign and malignant thyroid nodules: Initial experience in 23 patients. J Magn Reson Imaging 2012. [DOI: 10.1002/jmri.23948] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Miho Sasaki
- Department of Radiology and Cancer Biology; Nagasaki University School of Dentistry; Nagasaki; Japan
| | - Misa Sumi
- Department of Radiology and Cancer Biology; Nagasaki University School of Dentistry; Nagasaki; Japan
| | - Ken-ichi Kaneko
- Department of Otolaryngology-Head and Neck Surgery; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki; Japan
| | - Kotaro Ishimaru
- Department of Otolaryngology-Head and Neck Surgery; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki; Japan
| | - Haruo Takahashi
- Department of Otolaryngology-Head and Neck Surgery; Nagasaki University Graduate School of Biomedical Sciences; Nagasaki; Japan
| | - Takashi Nakamura
- Department of Radiology and Cancer Biology; Nagasaki University School of Dentistry; Nagasaki; Japan
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15
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Abstract
Infectious and autoimmune diseases account for the majority of benign conditions of the thyroid gland. They are usually diagnosed and followed by clinical examination and laboratory analyses, but when imaged, ultrasonography and computed tomography are the modalities of choice. In particular, fine needle aspiration under ultrasound guidance may be invaluable for diagnostic and therapeutic purposes.
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Affiliation(s)
- Amy Fan-Yee Juliano
- Department of Radiology, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA 02114, USA.
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16
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Current world literature. Curr Opin Rheumatol 2010; 23:125-30. [PMID: 21124095 DOI: 10.1097/bor.0b013e3283422cce] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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