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Magnetic-resonance Imaging - PubMed

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Last Updated: 04 August 2022

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Rapid Diffusion Magnetic Resonance Imaging Using Slice-Interleaved Encoding.

We present a robust reconstruction scheme for diffusion MRI results obtained by slice-interleaved diffusion encoding in this paper. SIDE acquires in each repetition time a volume that contains interleaved slice groups, each group corresponding to a different diffusion wavevector, in contrast to the traditional strategy of obtaining a complete diffusion-weighted volume per diffusion wavevector. The proposed reconstruction procedure uses a diffusion spectrum model and multi-dimensional total variation to retrieve complete DW images from DW volumes that are slice-undersampled due to a lack of unacquired SIDE volumes.

Source link: https://doi.org/10.1016/j.media.2022.102548


Magnetic resonance imaging findings of cystic ovarian tumors: major differential diagnoses in five types frequently encountered in daily clinical practice.

The number of ovarian tumors encountered in daily life is somewhat stable, despite the exclusion of rare ovarian tumors. Endometriosis is a condition of uterine cystadenoma, functional cysts, surface epithelial inclusion cysts, paratubal cysts, and endometriosis. Mucinous tumors and ovarian metastases are among the second and multilocular cystic ovarian lesions. Even if no solid component is present, it should be noted that mucinous tumors can be classified as borderline or carcinoma. Serous borderline tumor and serous carcinoma are two examples of third-element cystic lesions with mural nodules that are unrelated to endometriosis. Cystic lesions with solid parts are more likely to be malignant, but some may be classified as benign. Seromucinous borderline tumors, endometrioid carcinoma, and clear cell carcinoma are among the fourth-leading endometriosis-related ovarian tumors deriving from endometriosis. teratoma-related tumors are among the teratoma-related tumors, which are eventually cystic lesions with lipid content.

Source link: https://doi.org/10.1007/s11604-022-01321-x


Cardiac Assessment in Children with MIS-C: Late Magnetic Resonance Imaging Features.

In patients with significant transient left ventricular dysfunction in the acute phase of illness or persistent LV dysfunction, the American College of Rheumatology Clinical Guidelines recommends cardiac magnetic resonance imaging 2-6 months after the diagnosis of MIS-C in patients with significant transient left ventricular dysfunction in the acute phase of illness or persistent LV dysfunction. In MIS-C patients, there have been a few studies examining cardiac MRI findings. In this study, we sought to analyze cardiac MRI findings, at the earliest 3 months after diagnosis, and compare those results with the echocardiograms in children with MIS-C. During follow-up, echocardiography revealed normal LV systolic function in all patients, but coronary dilatation persisted in 2 of 5 patients at the 6th-month visit. This is the first report to announce cardiac MRI findings in the late period of MIS-C patients.

Source link: https://doi.org/10.1007/s00246-022-02977-y


Postpartum degeneration of adenomyosis with diffuse cyst-like changes and localized hemorrhage detected by sequential magnetic resonance imaging.

It's unclear what imaging and histological changes in adenomyosis as a result of pregnancy are clear. Nulliparous woman, 38, was diagnosed with dysmenorrhea and infertility. Adenomyosis of the diffuse type was seen on magnetic resonance imaging of Pelvic. No obvious degenerative findings were found in this second MRI performed due to an elevated inflammatory response during 31 weeks of gestation. With a dramatically raised inflammatory response on postpartum day 2, she demonstrated uterine tenderness and heightened inflammatory response. Without abscess, a third MRI revealed cyst-like degenerations with hemorrhagic changes. The disappearance of degenerations was confirmed by a fourth MRI at postpartum month 4's. This is the first study to publish imaging findings of early postpartum adenomyosis degeneration in the early postpartum.

Source link: https://doi.org/10.1111/jog.15382


Magnetic Resonance Imaging of Hidradenitis Suppurativa: A Focus on the Anoperineal Location.

Hidradenitis suppurativa is a chronic inflammatory skin disease that affects apocrine-bearing sites. Radiologists may be particularly difficult because HS diagnosis is usually based on clinical findings. However, diagnosis based solely on medical signs may underestimate the severity of HS. Given that MRI is an effective imaging device, its role in the diagnosis of acute and anogenital HS lesions warrants considerable attention. Unfortunately, anoperineal HS brings diagnostic difficulties. The study also identifies the disease from mimics in order to promote the prompt delivery of appropriate therapy and improve patient quality of life.

Source link: https://doi.org/10.3348/kjr.2022.0215


Brain circuits activated by female sexual behavior evaluated by manganese enhanced magnetic resonance imaging.

To measure brain activity, manganese ions are used in manganese-enhanced MRI, although in large doses it could cause neurotoxic effects. After females mated regulating the sexual interactions, females mated controlling the sexual interactions, the second aim was to determine the right dose of chloride manganese that would enable us to determine brain regions. Subjects were given one of MnCl2's doses 24 hours before the test was administered on session 1, 5 and 10, followed immediately thereafter and scanned immediately after. Females paced the sexual behaviour for ten weeks, but males paced the sexual interactions for ten weeks before the test and then scanned on sessions 1, 5, and 10. Both doses of MnCl2 are found to cause changes in sexual behavior, running wheel, and rotarod, according to the experiments. On session 5: the sociological circuit generated a higher signal intensity than the reward circuit and the control groups, indicating that even with sexual experience, the activation of the reward circuit requires the activation of the sociosexual circuit. Our review found that MEMRI can be used repeatedly in the same context to determine brain circuit activation after committed habits and how can this activation change with experience.

Source link: https://doi.org/10.1371/journal.pone.0272271


Structured Reporting in Multiple Sclerosis - Consensus-Based Reporting Templates for Magnetic Resonance Imaging of the Brain and Spinal Cord.

The advantages of structured reporting include reduced workload for neurologists and a learning curve for referral physicians, which are therefore necessary to ensure that the quality requirements of neuroradiological studies are maintained. Multiple sclerosis is an idiopathic chronic inflammation and neurodegenerative disease of the central nervous system and is the most common non-trauma-based inflammatory neuropathy disorder in young adults. Based on the MAGNIMS groups' recommendations [11, 12], the McDonald criteria regarding patients with MS, the brain and spinal cord, as well as MRI data regarding MRI diffusion in time and space, as well as in respect to MRI methods [11, 12] are met. Reporting of MRI datasets relating to patients with MS includes investigation of the images with respect to the underlying medical condition in order to determine whether the McDonald criteria, which were updated in 2017 [10] and mapping dissemination of MRI studies of MRI studies of MAGNIMS companies [11, Spinal cord abnormalities are present in up to 92 percent of MS patients [14-16] and are mainly located in the cervical spine [15]. In the primary diagnostic workup and follow-up imaging, the aim is to facilitate effective and comprehensive evaluation of patients with MS. The information technology group of the German Radiological Society and the German Society for Neuroradiology are working to keep the reporting templates used here up-to-date with regard to new research findings and recommendations of the MAGNIMS-CMSC-NAIMS group [11].

Source link: https://doi.org/10.1055/a-1867-3942


Application of Color Doppler Ultrasound Combined with Magnetic Resonance Imaging in Placenta Accreta.

A system to detect placenta accaccident and make the diagnosis more accurate is suggested in order to enhance the diagnostic value of color Doppler ultrasonography in placenta accouta and make the diagnosis more precise. Color Doppler ultrasonography and MRI examination were used for the patients with placenta accaccidenta. The Kappa combined test rate was 0. 09, the same as efficiency was 80. 9 percent, and the correlation was good; ROC curve analysis showed that the sensitivity and specificity of articular placenta accout were 91. 7 percent and 89. 26%, respectively, and the correlation was good. The difference was significant in our laboratory, with sensitivity, uniqueness, high estimate, negative predictive value, and Youden's index of color Doppler ultrasound combined with magnetic resonance imaging > color Doppler ultrasound. Both color Doppler ultrasound and MRI are safe in the diagnosis of placenta accreta, according to the scientific findings, and each has advantages and disadvantages.

Source link: https://doi.org/10.1155/2022/1050029

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions