1
|
Wary P, Hossu G, Ambarki K, Nickel D, Arberet S, Oster J, Orry X, Laurent V. Deep learning HASTE sequence compared with T2-weighted BLADE sequence for liver MRI at 3 Tesla: a qualitative and quantitative prospective study. Eur Radiol 2023; 33:6817-6827. [PMID: 37188883 DOI: 10.1007/s00330-023-09693-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 02/26/2023] [Accepted: 03/11/2023] [Indexed: 05/17/2023]
Abstract
OBJECTIVES To qualitatively and quantitatively compare a single breath-hold fast half-Fourier single-shot turbo spin echo sequence with deep learning reconstruction (DL HASTE) with T2-weighted BLADE sequence for liver MRI at 3 T. METHODS From December 2020 to January 2021, patients with liver MRI were prospectively included. For qualitative analysis, sequence quality, presence of artifacts, conspicuity, and presumed nature of the smallest lesion were assessed using the chi-squared and McNemar tests. For quantitative analysis, number of liver lesions, size of the smallest lesion, signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) in both sequences were assessed using the paired Wilcoxon signed-rank test. Intraclass correlation coefficients (ICCs) and kappa coefficients were used to assess agreement between the two readers. RESULTS One hundred and twelve patients were evaluated. Overall image quality (p = .006), artifacts (p < .001), and conspicuity of the smallest lesion (p = .001) were significantly better for the DL HASTE sequence than for the T2-weighted BLADE sequence. Significantly more liver lesions were detected with the DL HASTE sequence (356 lesions) than with the T2-weighted BLADE sequence (320 lesions; p < .001). CNR was significantly higher for the DL HASTE sequence (p < .001). SNR was higher for the T2-weighted BLADE sequence (p < .001). Interreader agreement was moderate to excellent depending on the sequence. Of the 41 supernumerary lesions visible only on the DL HASTE sequence, 38 (93%) were true-positives. CONCLUSION The DL HASTE sequence can be used to improve image quality and contrast and reduces artifacts, allowing the detection of more liver lesions than with the T2-weighted BLADE sequence. CLINICAL RELEVANCE STATEMENT The DL HASTE sequence is superior to the T2-weighted BLADE sequence for the detection of focal liver lesions and can be used in daily practice as a standard sequence. KEY POINTS • The half-Fourier acquisition single-shot turbo spin echo sequence with deep learning reconstruction (DL HASTE sequence) has better overall image quality, reduced artifacts (particularly motion artifacts), and improved contrast, allowing the detection of more liver lesions than with the T2-weighted BLADE sequence. • The acquisition time of the DL HASTE sequence is at least eight times faster (21 s) than that of the T2-weighted BLADE sequence (3-5 min). • The DL HASTE sequence could replace the conventional T2-weighted BLADE sequence to meet the growing indication for hepatic MRI in clinical practice, given its diagnostic and time-saving performance.
Collapse
Affiliation(s)
- Pierre Wary
- Department of Adult Radiology, CHRU de Nancy, 5 Rue du Morvan, 54500, Vandoeuvre-lès-Nancy, France.
| | - Gabriela Hossu
- Clinical Investigation Center Technological Innovation of Nancy, Inserm, CHRU de Nancy, Vandoeuvre-lès-Nancy, France
- Adaptive Diagnostic and Interventional Imaging, Inserm, CHRU de Nancy, Vandoeuvre-lès-Nancy, France
| | - Khalid Ambarki
- Siemens Healthcare, Siemens Healthcare SAS, Saint Denis, France
| | - Dominik Nickel
- Siemens Healthcare GmbH, MR Application Predevelopment, Erlangen, Germany
| | - Simon Arberet
- Siemens Healthineers, Digital Technology & Innovation, Princeton, NJ, USA
| | - Julien Oster
- Clinical Investigation Center Technological Innovation of Nancy, Inserm, CHRU de Nancy, Vandoeuvre-lès-Nancy, France
- Adaptive Diagnostic and Interventional Imaging, Inserm, CHRU de Nancy, Vandoeuvre-lès-Nancy, France
| | - Xavier Orry
- Department of Adult Radiology, CHRU de Nancy, 5 Rue du Morvan, 54500, Vandoeuvre-lès-Nancy, France
| | - Valérie Laurent
- Department of Adult Radiology, CHRU de Nancy, 5 Rue du Morvan, 54500, Vandoeuvre-lès-Nancy, France
- Adaptive Diagnostic and Interventional Imaging, Inserm, CHRU de Nancy, Vandoeuvre-lès-Nancy, France
| |
Collapse
|
2
|
Al-Dahery S, McGee A, Rainford L, Khashoggi K, Misha N. Evaluation of unenhanced axial T1W and T2W liver MR images acquired from institutions within the Republic of Ireland and the Kingdom of Saudi Arabia. Radiography (Lond) 2019; 25:e45-e51. [PMID: 30955698 DOI: 10.1016/j.radi.2018.10.005] [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: 04/07/2018] [Revised: 10/08/2018] [Accepted: 10/20/2018] [Indexed: 10/27/2022]
Abstract
INTRODUCTION This multi-site study evaluated two breath-hold sequences commonly utilised for liver MRI; non-enhanced T1W-3D-FS-GRE-TRA and T2W-2D-FSE-TRA sequences, using physical measurements of SNR and CNR, and observer perceptions' (Visual Grading Analysis: VGA). METHODS Liver MR image datasets (n = 168) from nine hospitals in the Kingdom of Saudi Arabia (KSA) and 11 hospitals in the Republic of Ireland were evaluated. Images were categorised into two groups per sequence, defined by slice thickness (T2W-2D-FSE, ≤5 mm vs ≥ 6 mm and T1W-3D-GRE-FS, ≤3 mm vs 4 mm). Images were evaluated using visual grading analysis VGA and physical measurements: SNR/CNR. Account was taken of varying patient sizes based on AP/transverse diameter measurements. RESULTS Physical image quality measurements (SNR/CNR) returned no significant findings across Irish and KSA hospitals, for both sequences, despite variations in acquisition parameters. Statistically significant differences were found for some scoring criteria based on the observers' perceptions including spleen parenchyma, and spatial resolution for the non-enhanced T1W-3D-FS-GRE-TRA images, with a preference for images acquired using thin slices (≤3 mm). In addition, statistically significant difference was found for the scoring criteria motion artefact for the axial T2W-2D-FSE-TRA images, with a preference for images acquired using thick slices (≥5 mm). Negligible correlation was noted between SNR/CNR and measured abdominal AP/transverse diameters. CONCLUSION Whilst variations in sequences rendered no statistical differences in SNR/CNR findings, significant differences in observer image criteria scores was noted. The importance of both physical measurements and observers' perceptions evaluation methods for quality assessment of MR images was demonstrated and optimisation of liver sequence parameters is warranted.
Collapse
Affiliation(s)
- S Al-Dahery
- Radiography and Diagnostic Imaging, School of Medicine, University College Dublin, Dublin, Ireland.
| | - A McGee
- Radiography and Diagnostic Imaging, School of Medicine, University College Dublin, Dublin, Ireland
| | - L Rainford
- Radiography and Diagnostic Imaging, School of Medicine, University College Dublin, Dublin, Ireland
| | - K Khashoggi
- Radiology Department, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
| | - N Misha
- Radiology Department, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
| |
Collapse
|
3
|
Barat M, Soyer P, Dautry R, Pocard M, Lo-Dico R, Najah H, Eveno C, Cassinotto C, Dohan A. Preoperative detection of malignant liver tumors: Comparison of 3D-T2-weighted sequences with T2-weighted turbo spin-echo and single shot T2 at 1.5 T. Eur J Radiol 2018; 100:7-13. [PMID: 29496082 DOI: 10.1016/j.ejrad.2018.01.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 12/28/2017] [Accepted: 01/05/2018] [Indexed: 11/17/2022]
Abstract
PURPOSE To assess the performances of three-dimensional (3D)-T2-weighted sequences compared to standard T2-weighted turbo spin echo (T2-TSE), T2-half-Fourier acquisition single-shot turbo spin-echo (T2-HASTE), diffusion weighted imaging (DWI) and 3D-T1-weighted VIBE sequences in the preoperative detection of malignant liver tumors. METHODS From 2012 to 2015, all patients of our institution undergoing magnetic resonance imaging (MRI) examination for suspected malignant liver tumors were prospectively included. Patients had contrast-enhanced 3D-T1-weighted, DWI, 3D-T2-SPACE, T2-HASTE and T2-TSE sequences. Imaging findings were compared with those obtained at follow-up, surgery and histopathological analysis. Sensitivities for the detection of malignant liver tumors were compared for each sequence using McNemar test. A subgroup analysis was conducted for HCCs. Image artifacts were analyzed and compared using Wilcoxon paired signed rank-test. RESULTS Thirty-three patients were included: 13 patients had 40 hepatocellular carcinomas (HCC) and 20 had 54 liver metastases. 3D-T2-weighted sequences had a higher sensitivity than T2-weighted TSE sequences for the detection of malignant liver tumors (79.8% versus 68.1%; P < 0.001). The difference did not reach significance for HCC. T1-weighted VIBE and DWI had a higher sensitivity than T2-weighted sequences. 3D-T2-weighted-SPACE sequences showed significantly less artifacts than T2-weitghted TSE. CONCLUSION 3D-T2-weighted sequences show very promising performances for the detection of liver malignant tumors compared to T2-weighted TSE sequences.
Collapse
Affiliation(s)
- Maxime Barat
- Department of Body and Interventional Imaging, Hôpital Lariboisière, AP-HP, 2 rue Ambroise Paré, 75475 Paris Cedex 10, France; UMR INSERM 965, Hôpital Lariboisière, 2 rue Amboise Paré, 75010 Paris, France.
| | - Philippe Soyer
- UMR INSERM 965, Hôpital Lariboisière, 2 rue Amboise Paré, 75010 Paris, France; Department of Body and Interventional Imaging, Hôpital Cochin, AP-HP, 27 rue du faubourg St Jacques, 75014 Paris, France; Université Sorbonne-Paris Cité, Paris-Diderot, 10 rue de Verdun, 75010 Paris, France.
| | - Raphael Dautry
- Department of Body and Interventional Imaging, Hôpital Lariboisière, AP-HP, 2 rue Ambroise Paré, 75475 Paris Cedex 10, France.
| | - Marc Pocard
- UMR INSERM 965, Hôpital Lariboisière, 2 rue Amboise Paré, 75010 Paris, France; Université Sorbonne-Paris Cité, Paris-Diderot, 10 rue de Verdun, 75010 Paris, France; Department of Digestive and Oncologic Surgery, Hôpital Lariboisière, AP-HP, 2 rue Ambroise Paré, 75475 Paris Cedex 10, France.
| | - Rea Lo-Dico
- Université Sorbonne-Paris Cité, Paris-Diderot, 10 rue de Verdun, 75010 Paris, France; Department of Digestive and Oncologic Surgery, Hôpital Lariboisière, AP-HP, 2 rue Ambroise Paré, 75475 Paris Cedex 10, France.
| | - Haythem Najah
- Université Sorbonne-Paris Cité, Paris-Diderot, 10 rue de Verdun, 75010 Paris, France; Department of Digestive and Oncologic Surgery, Hôpital Lariboisière, AP-HP, 2 rue Ambroise Paré, 75475 Paris Cedex 10, France.
| | - Clarisse Eveno
- UMR INSERM 965, Hôpital Lariboisière, 2 rue Amboise Paré, 75010 Paris, France; Université Sorbonne-Paris Cité, Paris-Diderot, 10 rue de Verdun, 75010 Paris, France; Department of Digestive and Oncologic Surgery, Hôpital Lariboisière, AP-HP, 2 rue Ambroise Paré, 75475 Paris Cedex 10, France.
| | - Christophe Cassinotto
- Department of Diagnostic and Interventional Imaging, Hôpîtal Haut-Lévêque, Centre Hospitalier Universitaire de Bordeaux, 1 Avenue de Magellan, 33604 Pessac, France; INSERM U1053, Université Bordeaux, Bordeaux, France.
| | - Anthony Dohan
- UMR INSERM 965, Hôpital Lariboisière, 2 rue Amboise Paré, 75010 Paris, France; Department of Body and Interventional Imaging, Hôpital Cochin, AP-HP, 27 rue du faubourg St Jacques, 75014 Paris, France; Université Sorbonne-Paris Cité, Paris-Diderot, 10 rue de Verdun, 75010 Paris, France; McGill University Health Center, Department of Radiology, McGill University Health Center, 1650 Cedar Avenue, Rm C5 118, Montreal, QC, Canada.
| |
Collapse
|
4
|
Abstract
PURPOSE The purpose of the study was to identify the frequency and reasons for extra sequences in clinical liver MRI and MRCP examinations. METHODS A total of 250 consecutive liver MRI and 250 consecutive MRCP examinations performed at a single institution were reviewed. Extra sequences performed in comparison with our standard institutional protocol were identified. Reasons for the extra sequences were identified. Overall trends were assessed. RESULTS In significantly greater fractions of exams (p = 0.009-0.030), MRCP had ≥1 extra sequence (40.8% vs. 29.2%) and ≥2 extra sequences (16.0% vs. 5.6%) in comparison with the institutional protocol than did liver MRI. The average number of extra sequences was significantly higher (p = 0.004) for MRCP (0.73 ± 1.2) than liver MRI (0.44 ± 0.88). Reasons for extra sequences were as follows: sequence repeated for patient motion (33.8% for liver MRI; 31.9% for MRCP); sequence repeated for anatomic coverage (24.3% for liver MRI; 19.8% for MRCP); sequence added by the radiologist (15.3% for liver MRI; 33.0% for MRCP); sequence repeated for other reason (17.1% for liver MRI; 12.6% for MRCP); and sequence added by the technologist (5.4% for liver MRI; 2.7% for MRCP). The most commonly repeated sequence due to motion was the axial fat-saturated turbo spin-echo T2-weighted sequence for both liver MRI and MRCP (54.7% and 29.3% of sequences repeated due to motion, respectively). CONCLUSION For liver MRI and MRCP exams, sequences were most often repeated due to motion artifact (most often occurring on TSE T2WI), and sequences were most often added by the radiologist. The findings may help guide sequence optimization, quality improvement initiatives, and standardization of operations, for improving efficiency in abdominal MRI workflow.
Collapse
|
5
|
Senova S, Hosomi K, Gurruchaga JM, Gouello G, Ouerchefani N, Beaugendre Y, Lepetit H, Lefaucheur JP, Badin RA, Dauguet J, Jan C, Hantraye P, Brugières P, Palfi S. Three-dimensional SPACE fluid-attenuated inversion recovery at 3 T to improve subthalamic nucleus lead placement for deep brain stimulation in Parkinson's disease: from preclinical to clinical studies. J Neurosurg 2016; 125:472-80. [PMID: 26745490 DOI: 10.3171/2015.7.jns15379] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Deep brain stimulation (DBS) of the subthalamic nucleus (STN) is a well-established therapy for motor symptoms in patients with pharmacoresistant Parkinson's disease (PD). However, the procedure, which requires multimodal perioperative exploration such as imaging, electrophysiology, or clinical examination during macrostimulation to secure lead positioning, remains challenging because the STN cannot be reliably visualized using the gold standard, T2-weighted imaging (T2WI) at 1.5 T. Thus, there is a need to improve imaging tools to better visualize the STN, optimize DBS lead implantation, and enlarge DBS diffusion. METHODS Gradient-echo sequences such as those used in T2WI suffer from higher distortions at higher magnetic fields than spin-echo sequences. First, a spin-echo 3D SPACE (sampling perfection with application-optimized contrasts using different flip angle evolutions) FLAIR sequence at 3 T was designed, validated histologically in 2 nonhuman primates, and applied to 10 patients with PD; their data were clinically compared in a double-blind manner with those of a control group of 10 other patients with PD in whom STN targeting was performed using T2WI. RESULTS Overlap between the nonhuman primate STNs segmented on 3D-histological and on 3D-SPACE-FLAIR volumes was high for the 3 most anterior quarters (mean [± SD] Dice scores 0.73 ± 0.11, 0.74 ± 0.06, and 0.60 ± 0.09). STN limits determined by the 3D-SPACE-FLAIR sequence were more consistent with electrophysiological edges than those determined by T2WI (0.9 vs 1.4 mm, respectively). The imaging contrast of the STN on the 3D-SPACE-FLAIR sequence was 4 times higher (p < 0.05). Improvement in the Unified Parkinson's Disease Rating Scale Part III score (off medication, on stimulation) 12 months after the operation was higher for patients who underwent 3D-SPACE-FLAIR-guided implantation than for those in whom T2WI was used (62.2% vs 43.6%, respectively; p < 0.05). The total electrical energy delivered decreased by 36.3% with the 3D-SPACE-FLAIR sequence (p < 0.05). CONCLUSIONS 3D-SPACE-FLAIR sequences at 3 T improved STN lead placement under stereotactic conditions, improved the clinical outcome of patients with PD, and increased the benefit/risk ratio of STN-DBS surgery.
Collapse
Affiliation(s)
- Suhan Senova
- Service de Neurochirurgie.,Inserm U955 Team 14;,Faculté de Médecine, Université Paris Est, Créteil
| | - Koichi Hosomi
- Service de Neurochirurgie.,Faculté de Médecine, Université Paris Est, Créteil;,DSV/I2BM/MIRCen/Laboratory of Neurodegenerative Diseases, CNRS, Commissariat à l'Energie Atomique, Fontenay-aux-Roses; and
| | - Jean-Marc Gurruchaga
- Service de Neurochirurgie.,Inserm U955 Team 14;,Faculté de Médecine, Université Paris Est, Créteil
| | - Gaëtane Gouello
- Service de Neurochirurgie.,Inserm U955 Team 14;,Faculté de Médecine, Université Paris Est, Créteil
| | - Naoufel Ouerchefani
- Service de Neurochirurgie.,Inserm U955 Team 14;,Faculté de Médecine, Université Paris Est, Créteil
| | | | - Hélène Lepetit
- Service de Neurochirurgie.,Inserm U955 Team 14;,Faculté de Médecine, Université Paris Est, Créteil
| | - Jean-Pascal Lefaucheur
- Service des Explorations Fonctionnelles, Assistance Publique des Hopitaux de Paris, Hôpital H. Mondor, DHU PePsy;,Faculté de Médecine, Université Paris Est, Créteil
| | - Romina Aron Badin
- DSV/I2BM/MIRCen/Laboratory of Neurodegenerative Diseases, CNRS, Commissariat à l'Energie Atomique, Fontenay-aux-Roses; and
| | - Julien Dauguet
- DSV/I2BM/MIRCen/Laboratory of Neurodegenerative Diseases, CNRS, Commissariat à l'Energie Atomique, Fontenay-aux-Roses; and
| | - Caroline Jan
- DSV/I2BM/MIRCen/Laboratory of Neurodegenerative Diseases, CNRS, Commissariat à l'Energie Atomique, Fontenay-aux-Roses; and
| | - Philippe Hantraye
- DSV/I2BM/MIRCen/Laboratory of Neurodegenerative Diseases, CNRS, Commissariat à l'Energie Atomique, Fontenay-aux-Roses; and
| | - Pierre Brugières
- Service de Neuroradiologie, and.,Inserm U955 Team 14;,Faculté de Médecine, Université Paris Est, Créteil;,DSV/I2BM/Neurospin/UNIACT, Commissariat à l'Energie Atomique, Saclay, France
| | - Stéphane Palfi
- Service de Neurochirurgie.,Inserm U955 Team 14;,Faculté de Médecine, Université Paris Est, Créteil
| |
Collapse
|
6
|
Abstract
Utilization of abdominopelvic MR imaging continues to increase in volume and gain widespread clinical acceptance. Many factors such as diaphragmatic respiratory motion, bulk patient motion, and the need for large volumetric coverage while maintaining clinically feasible scan times have proven challenging for body applications of MRI. However, many advances in MR acquisition, including non-Cartesian T1-weighted and T2-weighted acquisitions, advanced Dixon sequences, and 3-dimensional volumetric T2-weighted imaging have helped to mitigate some of the issues which have hampered abdominopelvic MR. This article will summarize these advances in T1-weighted and T2-weighted imaging, with an emphasis on clinical applications and implementation.
Collapse
|
7
|
Assessment of pituitary micro-lesions using 3D sampling perfection with application-optimized contrasts using different flip-angle evolutions. Neuroradiology 2014; 56:1047-53. [DOI: 10.1007/s00234-014-1432-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Accepted: 09/09/2014] [Indexed: 10/24/2022]
|