journal
Journals Magnetic Resonance Imaging Cli...

Magnetic Resonance Imaging Clinics of North America

https://read.qxmd.com/read/37741645/hybrid-pet-mr-in-cardiac-imaging
#21
REVIEW
Elsa Hervier, Carl Glessgen, René Nkoulou, Jean François Deux, Jean-Paul Vallee, Dionysios Adamopoulos
In the last few years, technological advances in MR imaging, PET detectors, and attenuation correction algorithms have allowed the creation of truly integrated PET/MR imaging systems, for both clinical and research applications. These machines allow a comprehensive investigation of cardiovascular diseases, by offering a wide variety of detailed anatomical and functional data in combination. Despite significant pathophysiologic mechanisms being clarified by this new data, its clinical relevance and prognostic significance have not been demonstrated yet...
November 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37741644/systematic-review-and-metanalysis-on-the-role-of-prostate-specific-membrane-antigen-positron-emission-tomography-magnetic-resonance-imaging-for-intraprostatic-tumour-assessment
#22
REVIEW
Paola Mapelli, Samuele Ghezzo, Alessandro Spataro, Carolina Bezzi, Ana Maria Samanes Gajate, Arturo Chiti, Maria Picchio
The present systematic review and meta-analysis are focused on the diagnostic accuracy of PSMA PET/MRI in primary prostate cancer assessment. A literature search was conducted on the PubMed database using the terms "PSMA" AND "prostate cancer" or "prostate" AND "PET/MRI" or "PET MRI" or "PET-MRI" or "PET-MR" AND "primary" or "staging." Ten articles were eligible for analysis after applying the exclusion criteria. PET/MRI showed better diagnostic accuracy in detecting primary PCa compared to multiparametric (mp) MRI and PET alone...
November 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37741643/clinical-value-of-hybrid-pet-mr-imaging-brain-imaging-using-pet-mr-imaging
#23
REVIEW
Aurélie Kas, Laura Rozenblum, Nadya Pyatigorskaya
Hybrid PET/MR imaging offers a unique opportunity to acquire MR imaging and PET information during a single imaging session. PET/MR imaging has numerous advantages, including enhanced diagnostic accuracy, improved disease characterization, and better treatment planning and monitoring. It enables the immediate integration of anatomic, functional, and metabolic imaging information, allowing for personalized characterization and monitoring of neurologic diseases. This review presents recent advances in PET/MR imaging and highlights advantages in clinical practice for neuro-oncology, epilepsy, and neurodegenerative disorders...
November 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37741642/abdominal-positron-emission-tomography-magnetic-resonance-imaging
#24
REVIEW
Álvaro Badenes Romero, Felipe S Furtado, Madaleine Sertic, Reece J Goiffon, Umar Mahmood, Onofrio A Catalano
Hybrid positron emission tomography (PET)/magnetic resonance imaging (MRI) is highly suited for abdominal pathologies. A precise co-registration of anatomic and metabolic data is possible thanks to the simultaneous acquisition, leading to accurate imaging. The literature shows that PET/MRI is at least as good as PET/CT and even superior for some indications, such as primary hepatic tumors, distant metastasis evaluation, and inflammatory bowel disease. PET/MRI allows whole-body staging in a single session, improving health care efficiency and patient comfort...
November 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37741641/the-clinical-added-value-of-breast-cancer-imaging-using-hybrid-pet-mr-imaging
#25
REVIEW
Ismini C Mainta, Ilektra Sfakianaki, Isaac Shiri, Diomidis Botsikas, Valentina Garibotto
Dedicated MR imaging is highly performant for the evaluation of the primary lesion and should regularly be added to whole-body PET/MR imaging for the initial staging. PET/MR imaging is highly sensitive for the detection of nodal involvement and could be combined with the high specificity of axillary second look ultrasound for the confirmation of the N staging. For M staging, with the exception of lung lesions, PET/MR imaging is superior to PET/computed tomography, at half the radiation dose. The predictive value of multiparametric imaging with PET/MR imaging holds promise to improve through radiomics and artificial intelligence...
November 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37741640/pet-mr-imaging-in-head-and-neck-cancer
#26
REVIEW
Minerva Becker, Claudio de Vito, Nicolas Dulguerov, Habib Zaidi
Head and neck squamous cell carcinoma (HNSCC) can either be examined with hybrid PET/MR imaging systems or sequentially, using PET/CT and MR imaging. Regardless of the acquisition technique, the superiority of MR imaging compared to CT lies in its potential to interrogate tumor and surrounding tissues with different sequences, including perfusion and diffusion. For this reason, PET/MR imaging is preferable for the detection and assessment of locoregional residual/recurrent HNSCC after therapy. In addition, MR imaging interpretation is facilitated when combined with PET...
November 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37741639/update-on-positron-emission-tomography-magnetic-resonance-imaging-cancer-and-inflammation-imaging-in-the-clinic
#27
REVIEW
Paniz Sabeghi, Sanaz Katal, Michelle Chen, Farzaneh Taravat, Thomas J Werner, Babak Saboury, Ali Gholamrezanezhad, Abass Alavi
Hybrid PET/MRI is highly valuable, having made significant strides in overcoming technical challenges and offering unique advantages such as reduced radiation, precise data coregistration, and motion correction. Growing evidence highlights the value of PET/MRI in broad clinical aspects, including inflammatory and oncological imaging in adults, pregnant women, and pediatrics, potentially surpassing PET/CT. This newly integrated solution may be preferred over PET/CT in many clinical conditions. However, further technological advancements are required to facilitate its broader adoption as a routine diagnostic modality...
November 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37741638/recent-advances-in-positron-emission-tomography-magnetic-resonance-imaging-technology
#28
REVIEW
Hossein Arabi, Habib Zaidi
More than a decade has passed since the clinical deployment of the first commercial whole-body hybrid PET/MR scanner in the clinic. The major advantages and limitations of this technology have been investigated from technical and medical perspectives. Despite the remarkable advantages associated with hybrid PET/MR imaging, such as reduced radiation dose and fully simultaneous functional and structural imaging, this technology faced major challenges in terms of mutual interference between MRI and PET components, in addition to the complexity of achieving quantitative imaging owing to the intricate MRI-guided attenuation correction in PET/MRI...
November 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37414476/mr-angiography-current-state-and-future-directions
#29
EDITORIAL
Prashant Nagpal, Thomas M Grist
No abstract text is available yet for this article.
August 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37414475/foreword
#30
EDITORIAL
Suresh K Mukherji, Lynne S Steinbach
No abstract text is available yet for this article.
August 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37414474/mr-angiography-contrast-enhanced-acquisition-techniques
#31
REVIEW
Prashant Nagpal, Thomas M Grist
Contrast-enhanced MR angiography (CE-MRA) is a frequently used MR imaging technique for evaluating cardiovascular structures. In many ways, it is similar to contrast-enhanced computed tomography (CT) angiography, except a gadolinium-based contrast agent (instead of iodinated contrast) is injected. Although the physiological principles of contrast injection overlap, the technical factors behind enhancement and image acquisition are different. CE-MRA provides an excellent alternative to CT for vascular evaluation and follow-up without requiring nephrotoxic contrast and ionizing radiation...
August 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37414473/mr-angiography-of-pulmonary-vasculature
#32
REVIEW
Liisa L Bergmann, Jeanne B Ackman, Jitka Starekova, Alexander Moeller, Scott Reeder, Scott K Nagle, Mark L Schiebler
Pulmonary MR angiography (MRA) is a useful alternative to computed tomographic angiography (CTA) for the study of the pulmonary vasculature. For pulmonary hypertension and partial anomalous pulmonary venous return, a cardiac MR imaging and the pulmonary MRA are useful for flow quantification and planning treatment. For the diagnosis of pulmonary embolism (PE), MRA-PE has been shown to have non-inferior outcomes at 6 months when compared with CTA-PE. Over the last 15 years, pulmonary MRA has become a routine and reliable examination for the workup of pulmonary hypertension and the primary diagnosis of PE at the University of Wisconsin...
August 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37414472/mr-imaging-for-intracranial-vessel-wall-imaging-pearls-and-pitfalls
#33
REVIEW
Laura B Eisenmenger, Alma Spahic, Joseph Scott McNally, Kevin M Johnson, Jae W Song, Jacqueline C Junn
Conventional vascular imaging methods have primarily focused on evaluating the vascular lumen. However, these techniques are not intended to evaluate vessel wall abnormalities where many cerebrovascular pathologies reside. With increased interest for the visualization and study of the vessel wall, high-resolution vessel wall imaging (VWI) has gained traction.Over the past two decades, there has been a rapid increase in number of VWI publications with improvements in imaging techniques and expansion on clinical applications...
August 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37414471/clinical-applications-of-four-dimensional-flow-mri
#34
REVIEW
Anthony Maroun, Sandra Quinn, David Dushfunian, Elizabeth K Weiss, Bradley D Allen, James C Carr, Michael Markl
Four-dimensional flow MRI is a powerful phase contrast technique used for assessing three-dimensional (3D) blood flow dynamics. By acquiring a time-resolved velocity field, it enables flexible retrospective analysis of blood flow that can include qualitative 3D visualization of complex flow patterns, comprehensive assessment of multiple vessels, reliable placement of analysis planes, and calculation of advanced hemodynamic parameters. This technique provides several advantages over routine two-dimensional flow imaging techniques, allowing it to become part of clinical practice at major academic medical centers...
August 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37414470/four-dimensional-flow-mr-imaging-technique-and-advances
#35
REVIEW
Oliver Wieben, Grant S Roberts, Philip A Corrado, Kevin M Johnson, Alejandro Roldán-Alzate
4D Flow MRI is an advanced imaging technique for comprehensive non-invasive assessment of the cardiovascular system. The capture of the blood velocity vector field throughout the cardiac cycle enables measures of flow, pulse wave velocity, kinetic energy, wall shear stress, and more. Advances in hardware, MRI data acquisition and reconstruction methodology allow for clinically feasible scan times. The availability of 4D Flow analysis packages allows for more widespread use in research and the clinic and will facilitate much needed multi-center, multi-vendor studies in order to establish consistency across scanner platforms and to enable larger scale studies to demonstrate clinical value...
August 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37414469/body-and-extremity-mr-venography-technique-clinical-applications-and-advances
#36
REVIEW
Rory L Cochran, Brian B Ghoshhajra, Sandeep S Hedgire
Magnetic resonance venography (MRV) represents a distinct imaging approach that may be used to evaluate a wide spectrum of venous pathology. Despite duplex ultrasound and computed tomography venography representing the dominant imaging modalities in investigating suspected venous disease, MRV is increasingly used due to its lack of ionizing radiation, unique ability to be performed without administration of intravenous contrast, and recent technical improvements resulting in improved sensitivity, image quality, and faster acquisition times...
August 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37414468/mr-angiography-of-extracranial-carotid-disease
#37
REVIEW
Anthony Peret, Griselda Romero-Sanchez, Mona Dabiri, Joseph Scott McNally, Kevin M Johnson, Mahmud Mossa-Basha, Laura B Eisenmenger
Magnetic resonance angiography sequences, such as time-of-flight and contrast-enhanced angiography, provide clear depiction of vessel lumen, traditionally used to evaluate carotid pathologic conditions such as stenosis, dissection, and occlusion; however, atherosclerotic plaques with a similar degree of stenosis may vary tremendously from a histopathological standpoint. MR vessel wall imaging is a promising noninvasive method to evaluate the content of the vessel wall at high spatial resolution. This is particularly interesting in the case of atherosclerosis as vessel wall imaging can identify higher risk, vulnerable plaques as well as has potential applications in the evaluation of other carotid pathologic conditions...
August 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37414467/mr-angiography-for-aortic-diseases
#38
REVIEW
Ishan Garg, Thomas M Grist, Prashant Nagpal
Aortic pathologic conditions represent diverse disorders, including aortic aneurysm, acute aortic syndrome, traumatic aortic injury, and atherosclerosis. Given the nonspecific clinical features, noninvasive imaging is critical in screening, diagnosis, management, and posttherapeutic surveillance. Of the commonly used imaging modalities, including ultrasound, computed tomography, and MR imaging, the final choice often depends on a combination of factors: acuity of clinical presentation, suspected underlying diagnosis, and institutional practice...
August 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37414466/magnetic-resonance-angiography-of-the-arteries-of-the-upper-and-lower-extremities
#39
REVIEW
Ayaz Aghayev, Michael Steigner
Magnetic resonance angiography (MRA) is a powerful tool for assessing upper and lower extremity artery pathologies. In addition to the classic advantages of MRA, such as the absence of radiation and iodinated contrast exposure, it can provide high temporal resolution/dynamic images of the arteries with high soft tissue contrast. Although it has a relatively lower spatial resolution than computed tomography angiography, MRA does not cause blooming artifacts in heavily calcified vessels, which is crucial in small vessel assessment...
August 2023: Magnetic Resonance Imaging Clinics of North America
https://read.qxmd.com/read/37414465/non-contrast-magnetic-resonance-angiography-techniques-principles-and-applications
#40
REVIEW
Ananya Panda, Christopher J Francois, Candice A Bookwalter, Abhishek Chaturvedi, Jeremy D Collins, Tim Leiner, Prabhakar Shantha Rajiah
Several non-contrast magnetic resonance angiography (MRA) techniques have been developed, providing an attractive alternative to contrast-enhanced MRA and a radiation-free alternative to computed tomography (CT) CT angiography. This review describes the physical principles, limitations, and clinical applications of bright-blood (BB) non-contrast MRA techniques. The principles of BB MRA techniques can be broadly divided into (a) flow-independent MRA, (b) blood-inflow-based MRA, (c) cardiac phase dependent, flow-based MRA, (d) velocity sensitive MRA, and (e) arterial spin-labeling MRA...
August 2023: Magnetic Resonance Imaging Clinics of North America
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