3D MRI of the Rheumatic Diseases

2021 ◽  
Vol 25 (03) ◽  
pp. 425-432
Author(s):  
Fatemeh Ezzati ◽  
Majid Chalian ◽  
Parham Pezeshk
Keyword(s):  
Rheumatic Diseases ◽  
High Spatial Resolution ◽  
Diagnostic Yield ◽  
Three Dimensional ◽  
Resonance Imaging ◽  
3D Mri ◽  
The Past ◽  
Tissue Contrast ◽  
Magnetic Resonance Imaging Mri ◽  
Monitoring Treatment

AbstractMagnetic resonance imaging (MRI) is commonly used to evaluate musculoskeletal pathologies due to its high spatial resolution and excellent tissue contrast. The diagnosis of rheumatic diseases can often be challenging. Investigation with conventional two-dimensional MRI is helpful for diagnosis and monitoring treatment. In the past few years, three-dimensional (3D) MRI has been more commonly used to assess joint pathologies including inflammatory and rheumatic diseases. This review discusses the techniques and protocols of 3D MRI and its diagnostic yield in the assessment of rheumatic diseases, along with different examples.

3D MRI of the Hip Joint: Technical Considerations, Advantages, Applications, and Current Perspectives

2021 ◽  
Vol 25 (03) ◽  
pp. 488-500
Author(s):  
Oganes Ashikyan ◽  
Joel Wells ◽  
Avneesh Chhabra
Keyword(s):  
Acetabular Dysplasia ◽  
Three Dimensional ◽  
Resonance Imaging ◽  
3D Mri ◽  
Great Precision ◽  
Conventional Mri ◽  
Labral Tears ◽  
Technical Details ◽  
Magnetic Resonance Imaging Mri ◽  
Technical Considerations

AbstractMagnetic resonance imaging (MRI) is a common choice among various imaging modalities for the evaluation of hip conditions. Conventional MRI with two-dimensional acquisitions requires a significant amount of time and is limited by partial-volume artifacts and suboptimal fluid-to-cartilage contrast. Recent hardware and software advances have resulted in development of novel isotropic three-dimensional (3D) single-acquisition protocols that cover the volume of the entire hip and can be reconstructed in arbitrary planes for submillimeter assessment of bony and labro-cartilaginous structures in their planes of orientation. This technique facilitates superior identification of small labral tears and other hip lesions with better correlations with arthroscopy. In this review, we discuss technical details related to 3D MRI of the hip, its advantages, and its role in commonly encountered painful conditions that can be evaluated with great precision using this technology. The entities described are femoroacetabular impingement with acetabular labral tears, acetabular dysplasia, avascular necrosis, regional tendinopathies and tendon tears, bursitis, and other conditions.

Three-dimensional MRI sequences in MS diagnosis and research

2019 ◽  
Vol 25 (13) ◽  
pp. 1700-1709
Author(s):  
Xun Yang Hu ◽  
Luckshi Rajendran ◽  
Emmanuelle Lapointe ◽  
Roger Tam ◽  
David Li ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Inversion Recovery ◽  
Susceptibility Weighted Imaging ◽  
Resonance Imaging ◽  
Phase Sensitive Inversion Recovery ◽  
3D Mri ◽  
Fluid Attenuated Inversion Recovery ◽  
Mri Sequences ◽  
Phase Sensitive ◽  
Magnetic Resonance Imaging Mri

The most recent guidelines for magnetic resonance imaging (MRI) in multiple sclerosis (MS) recommend three-dimensional (3D) MRI sequences over their two-dimensional (2D) counterparts. This development has been made possible by advances in MRI scanner hardware and software. In this article, we review the 3D versions of conventional sequences, including T1-weighted, T2-weighted and fluid-attenuated inversion recovery (FLAIR), as well as more advanced scans, including double inversion recovery (DIR), FLAIR2, FLAIR*, phase-sensitive inversion recovery, and susceptibility weighted imaging (SWI).

scholarly journals Molecular and Nonmolecular Magnetic Resonance Coronary and Carotid Imaging

2019 ◽  
Vol 39 (4) ◽  
pp. 569-582 ◽  
Author(s):  
Reza Hajhosseiny ◽  
Tamanna S. Bahaei ◽  
Claudia Prieto ◽  
René M. Botnar
Keyword(s):  
Magnetic Resonance ◽  
Plaque Characterization ◽  
Resonance Imaging ◽  
Research Attention ◽  
The Past ◽  
Arterial Lumen ◽  
Cardiovascular Morbidity And Mortality ◽  
Tissue Contrast ◽  
Magnetic Resonance Imaging Mri ◽  
Atherosclerosis Imaging

Atherosclerosis is the leading cause of cardiovascular morbidity and mortality. Over the past 2 decades, increasing research attention is converging on the early detection and monitoring of atherosclerotic plaque. Among several invasive and noninvasive imaging modalities, magnetic resonance imaging (MRI) is emerging as a promising option. Advantages include its versatility, excellent soft tissue contrast for plaque characterization and lack of ionizing radiation. In this review, we will explore the recent advances in multicontrast and multiparametric imaging sequences that are bringing the aspiration of simultaneous arterial lumen, vessel wall, and plaque characterization closer to clinical feasibility. We also discuss the latest advances in molecular magnetic resonance and multimodal atherosclerosis imaging.

Computed Tomography and Magnetic Resonance Imaging-aided Diagnosis of Primary Essential Cutis Verticis Gyrata: A Case Report with 5-year Follow-up and Review of the Literature

2019 ◽  
Vol 15 (9) ◽  
pp. 906-910
Author(s):  
Hongzhang Zhu ◽  
Shi-Ting Feng ◽  
Xingqi Zhang ◽  
Zunfu Ke ◽  
Ruixi Zeng ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Three Dimensional ◽  
Stable Condition ◽  
Resonance Imaging ◽  
Mri Findings ◽  
Cutis Verticis Gyrata ◽  
Essential Form ◽  
History Of ◽  
Magnetic Resonance Imaging Mri

Background: Cutis Verticis Gyrata (CVG) is a rare skin disease caused by overgrowth of the scalp, presenting as cerebriform folds and wrinkles. CVG can be classified into two forms: primary (essential and non-essential) and secondary. The primary non-essential form is often associated with neurological and ophthalmological abnormalities, while the primary essential form occurs without associated comorbidities. Discussion: We report on a rare case of primary essential CVG with a 4-year history of normal-colored scalp skin mass in the parietal-occipital region without symptom in a 34-year-old male patient, retrospectively summarizing his pathological and Computer Tomography (CT) and magnetic resonance imaging (MRI) findings. The major clinical observations on the CT and MR sectional images include a thickened dermis and excessive growth of the scalp, forming the characteristic scalp folds. With the help of CT and MRI Three-dimensional (3D) reconstruction techniques, the characteristic skin changes could be displayed intuitively, providing more evidence for a diagnosis of CVG. At the 5-year followup, there were no obvious changes in the lesion. Conclusion: Based on our observations, we propose that not all patients with primary essential CVG need surgical intervention, and continuous clinical observation should be an appropriate therapy for those in stable condition.

scholarly journals Cinematic rendering of a burst sagittal suture caused by an occipito-frontal gunshot wound

2021 ◽  
Author(s):  
Dominic Gascho ◽  
Michael J. Thali ◽  
Rosa M. Martinez ◽  
Stephan A. Bolliger
Keyword(s):  
Gunshot Wound ◽  
Three Dimensional ◽  
The Novel ◽  
Sagittal Suture ◽  
Resonance Imaging ◽  
Cinematic Rendering ◽  
Reconstruction Methods ◽  
Dimensional Reconstruction ◽  
Magnetic Resonance Imaging Mri ◽  
The Brain

AbstractThe computed tomography (CT) scan of a 19-year-old man who died from an occipito-frontal gunshot wound presented an impressive radiating fracture line where the entire sagittal suture burst due to the high intracranial pressure that arose from a near-contact shot from a 9 mm bullet fired from a Glock 17 pistol. Photorealistic depictions of the radiating fracture lines along the cranial bones were created using three-dimensional reconstruction methods, such as the novel cinematic rendering technique that simulates the propagation and interaction of light when it passes through volumetric data. Since the brain had collapsed, depiction of soft tissue was insufficient on CT images. An additional magnetic resonance imaging (MRI) examination was performed, which enabled the diagnostic assessment of cerebral injuries.

Comorbid Depressive Disorders in Epilepsy

CNS Spectrums ◽  
2010 ◽  
Vol 15 (S4) ◽  
pp. 3-6 ◽  
Author(s):  
Andres M. Kanner ◽  
Andrew J. Cole
Keyword(s):  
Emergency Room ◽  
Depressive Disorders ◽  
Clonic Seizure ◽  
Resonance Imaging ◽  
Abnormal Signal ◽  
The Past ◽  
History Of ◽  
Magnetic Resonance Imaging Mri ◽  
The Right ◽  
History Of Depression

A 27-year-old woman presented to the emergency room after having witnessed generalized tonic clonic seizure while asleep. Birth and development were normal. She had suffered a single febrile seizure at 13 months of age, but had no other seizure risk factors. She was otherwise well except for a history of depression for which she was taking sertraline. Depressive symptoms had been well controlled over the past 3 months, but she had been under increased stress working to finish a doctoral thesis. Neurological examination was normal. Magnetic resonance imaging (MRI) showed modest asymmetry of the hippocampi, slightly smaller on the right, but no abnormal signal and well-preserved laminar anatomy. An electroencephalogram was negative. She was discharged from the emergency room with no treatment. Three weeks later, the patient's boyfriend witnessed an episode of behavioral arrest with lip smacking and swallowing automatisms lasting 45 seconds, after which the patient was confused for 20–30 minutes. The next morning she and her boyfriend kept a previously scheduled appointment with a neurologist.

3D MRI of the Spine

2021 ◽  
Vol 25 (03) ◽  
pp. 433-440
Author(s):  
Meghan Sahr ◽  
Ek Tsoon Tan ◽  
Darryl B. Sneag
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Spinal Fixation ◽  
Resonance Imaging ◽  
3D Mri ◽  
Time Savings ◽  
Zero Time ◽  
3D Magnetic Resonance Imaging

AbstractThree-dimensional (3D) magnetic resonance imaging of the spine is now clinically feasible due to technological advancements. Its advantages over two-dimensional imaging include higher in-plane spatial resolution and the ability for reformation in any plane that enables time savings in image acquisition and aids more accurate interpretation. Multispectral 3D techniques for imaging around metal are sometimes useful for evaluating anatomy adjacent to spinal fixation hardware. 3D gradient-recalled echo sequences, including ultrashort or zero time to echo sequences, can provide osseous detail similar to conventional computed tomography.

The site of waist measurement impacts the estimation of visceral fat: Results from three-dimensional photonic body scanning

2021 ◽  
pp. 1-32
Author(s):  
Katja D Repp ◽  
Dörte Radke ◽  
Till Ittermann ◽  
Martin Albers ◽  
Marcello R P Markus ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Waist Circumference ◽  
Visceral Fat ◽  
Iliac Crest ◽  
Three Dimensional ◽  
Resonance Imaging ◽  
3 Dimensional ◽  
Body Scanning ◽  
Standardized Protocol ◽  
Magnetic Resonance Imaging Mri

Abstract Currently various protocols regarding the site of waist circumference (WC) measurement are in place. This study aimed to analyze the effect of the site of WC measurement on visceral fat (VAT) estimation. WC was obtained at seven anatomical sites in 211 German volunteers (103 males) aged 23-81 using 3-dimensional photonic body scanning (PBS). At one site WC was additionally measured by tape. The quantity of VAT was assessed by magnetic resonance imaging (MRI). Models to estimate VAT based on WC were developed; the precision of the estimation is represented by R2. The influence of the applied method of WC assessment (tape vs. PBS) on the estimations is reported. Results show that the amount of estimated VAT and the precision of VAT estimation were dependent on the site of measurement. VAT was estimated most precisely by WC taken at the level of the lowest rib (WCrib: R²=0.75 females; 0.79 males), the minimum circumference (WCmin: R²=0.75 females; 0.77 males) and at the narrowest part of the torso (WCnar: R²=0.76 females; 0.77 males), and least precisely by WC assessed at the top of iliac crest (WCiliac: R²=0.61 females; 0.60 males). VAT estimates based on WC obtained by PBS were smaller and estimations were slightly less precise compared to estimates based on tape measures. Our results indicate that the method and the site of waist measurement should be considered when estimating VAT based on WC. The implementation of a standardized protocol using either WCrib, WCmin or WCnar could improve the precision of VAT estimation.

scholarly journals Applicability of Magnetic Resonance Imaging in the Assessment of Fetal Urinary Tract Malformations

2019 ◽  
Vol 70 (1) ◽  
pp. 83-95 ◽  
Author(s):  
Tatiana Mendonça Fazecas ◽  
Edward Araujo Júnior ◽  
Heron Werner ◽  
Pedro Daltro ◽  
Alberto Borges Peixoto ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Urinary Tract ◽  
Magnetic Resonance ◽  
Three Dimensional ◽  
Surface Coil ◽  
Resonance Imaging ◽  
Magnetic Resonance Imaging Mri ◽  
Urinary Tract Malformations ◽  
Weighted Sequences ◽  
Urinary Tract Anomalies

Objective To assess the applicability of magnetic resonance imaging (MRI) to complement ultrasound in the diagnosis of fetal urinary tract anomalies. Methods This was a retrospective cohort study that included 41 women between 19 weeks and 37 weeks and 6 days of gestation carrying fetuses with malformations of the urinary tract which were initially diagnosed by ultrasound and then referred for MRI. In all cases, the diagnosis was confirmed after birth either through imaging or autopsy. A surface coil was positioned over the abdomen and T2-weighted sequences were obtained in the axial, coronal, and sagittal planes; T1 in at least one plane; and three-dimensional (3-D) TRUFI in fetuses with dilatation of the urinary tract. Results Mean gestational age at the time of MRI examination was 28.21 weeks. The rapid T2 sequences allowed all the anomalies of the fetal urinary tract to be assessed, whereas 3-D TRUFI sequencing proved very useful in evaluating anomalies involving dilatation of the urinary tract. The signs of pulmonary hypoplasia characterized by hypointense signal in the T2-weighted sequences were identified in 13 of the 41 fetuses. Conclusion MRI confirmed and added information to the ultrasound regarding fetal urinary tract anomalies, as well as information related to the other associated malformations, their progress in the prenatal period, and possible postnatal prognosis.

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