Advanced searches left 3/3

Magnetic-resonance Imaging - Springer Nature

Summarized by Plex Scholar
Last Updated: 04 August 2022

* If you want to update the article please login/register

Cardiac involvement in coronavirus disease 2019 assessed by cardiac magnetic resonance imaging: a meta-analysis

We wanted to determine the prevalence of cardiac involvement in patients with COVID-19 using cardiac magnetic resonance imaging, in this systematic review and meta-analysis. Using random-effects algorithms, the COVID-19 patients and controls for LVEF and RVEF were estimated. From 29 eligible studies, COVID-19 contained results from 10. 462 patients, including 1. 010 non-athletes and 9. 452 athletes. [MD=u2212 2. 84, 95% confidence interval, p 0. 001], and RVEF] showed a significant difference between COVID-19 patients and controls in terms of LVEF [MD = u2212 2. 84, 95% confidence interval, p 0. 001] and RVEF. The incidence of LV LGE abnormalities, pericardial improvement, T1 mapping, T2WI, and myocarditis were 27. 5%, 39. 9%, and 17. 6%, respectively, in non-athletes. Both LVEF and RVEF were severely impaired in COVID-19 patients compared to controls, but not in athletes. In addition, the presence of myocardial involvement in patients with COVID-19 is not negligible in patients with COVID-19.

Source link: https://doi.org/10.1007/s00380-022-02055-6


Post-mortem magnetic resonance imaging with computed tomography-guided biopsy for foetuses and infants: a prospective, multicentre, cross-sectional study

Methods We conducted a prospective, multicentre, cross-sectional study to compare the diagnostic results of post-mortem magnetic resonance imaging with computed tomography-guided biopsy in foetuses and infants with conventional autopsy. After post-mortem examination using a computed tomography scanner and a magnetic resonance imaging unit, computed tomography-guided tissue sampling was done. Both methods found the proportion of cases for which the same cause of death was determined by both methods, which was the primary outcome. The number of false positive and false negative major pathological lesions detected by virtopsy was found by virtopsy, as well as the proportion of computed tomography-guided biopsies that were suitable for histological examinations. In 556 biopsies of 556 biopsies, computed tomography-guided tissue sampling was sufficient for pathological examinations, providing valuable diagnostic information in five of the 30 cases with undetermined cause of death before autopsy compared to plain scan alone. Biopsies from 19 of 20 infective deaths, described disease-related tissue changes in 19 of 20 of 20 infective patients, and immunopsies revealed infection-related tissue changes.

Source link: https://doi.org/10.1186/s12887-022-03519-4


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 constant, despite the exclusion of rare ovarian tumors. Blessing cystadenoma, functional cysts, surface epithelial inclusion cysts, epitubular cysts, and endometriosis are among the initial, ocular cystoses, isoplastic cysts, endometriosis, and endometriosis are among benign lesions found in unilocular cystic masses without mural nodules/solid components of medical cysts, aseptic cysts, epithelial cysts, fibrada Mucinous tumors and ovarian metastases are among the second-locular 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-line tumors with mural nodules that are unrelated to endometriosis. Solid components of Cystic lesions are more likely to be malignant, but some can be classified as benign. Seromucinous borderline tumors, endometriosis, and clear cell carcinoma are among the many common ovarian tumors derived from endometriosis in the fourth quarter.

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 2u20136 months after the diagnosis of MIS-C in patients with enduring ventricular dysfunction in the acute phase of illness or persistent LV dysfunction. In MIS-C patients, there are only a few studies examining cardiac MRI findings. LV systolic function in all patients during follow-up; coronary dilatation persisted in 2 of 5 patients at the 6th-month visit; echocardiography revealed normal LV systolic function in two of 5 patients on follow-up; coronary dilatation remained in 2 of 5 patients. A high prevalence of cardiac involvement, especially pericardial effusion, was found in patients with MIS-C, particularly pericardial effusion, according to cardiac MRI results performed at the earliest 2u20136 months after diagnosis. In MIS-C patients in the late period, cardiac MRI should not be performed even if echocardiography does not reveal any abnormalities in the initial phase. This is the first report to publish cardiac MRI findings in the late period of MIS-C patients.

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


Diffusion‐weighted imaging and conventional magnetic resonance imaging for detection of non-palpable undescended testis

Our aim in this research was to determine the effectiveness of combined conventional MR imaging and DWI in the detection of non-palpable undescended testes in pediatric patients and compare the findings to the laparoscopic findings. 60 pediatric patients with 68 non-palpable undescended testes ranging from Urology department to the radiodiagnosis and medical imaging department at our institute for MR imaging analysis of clinically diagnosed non-palpable undescended testis, with mean age of 4. 67 years from 6 months to 2022. Conclusions T2WI, and fat-suppression T2WI combined with a high b value and conventional MRI exhibited significant diagnostic results when compared to conventional MRI alone, raising the preoperative sensitivity and reliability of finding non-palpable undescended testes.

Source link: https://doi.org/10.1186/s43055-022-00854-5


Comparison of Cadmium Zinc Telluride ECG-gated SPECT equilibrium radionuclide angiocardiography to magnetic resonance imaging to measure right ventricular volumes and ejection fraction in patients with cardiomyopathy

Aims, Cadmium Zinc Leturide angiocardiography of right ventricular function determined by Cadmium Zinc ECG-gated SPECT equilibrium radionuclide angiocardiography was the aim of this investigation. With good agreement between the two methods, the two methods revealed a mean difference between CZT-ERNA and MRI for RVEF of -2. 6 percent. Conclusion CZT-ERNA provides a precise, reproducible measurement of RVF in patients with cardiomyopathy, and it appears as a good alternative to cardiac magnetic resonance for the determination of RVF in patients with cardiomyopathy.

Source link: https://doi.org/10.1007/s12350-021-02653-3


Limits to the generalizability of resting-state functional magnetic resonance imaging studies of youth: An examination of ABCD Study® baseline data

Within the Adolescent Brain Cognitive Development Study, this research explored how resting-state functional magnetic resonance imaging data quality and availability relate to clinical and sociodemographic characteristics. A small sample of participants with an adequate sample of quality baseline rs-fMRI results with low average motion was compared to a control group of participants without an appropriate sample of quality baseline data and/or containing high average motion using Chi-squared analyses and t-tests. In the sample with low-noise results, a linear mixed model investigated connections between clinical and sociodemographic characteristics and average head motion. The low-noise sample, according to a comparison with higher-noise results, included more females, youth identified by parents as non-Hispanic white, youth with married parents, higher parental education, and increased household incomes. Participants with low-noise rs-fMRI results may therefore be less representative of the general population and motion may remain a confound in this sample.

Source link: https://doi.org/10.1007/s11682-022-00665-2


Clinical usefulness of multiple arterial-phase images in gadoxetate disodium-enhanced magnetic resonance imaging: a systematic review and meta-analysis

Objectives and Objectives The multiple arterial-phase scanning scheme was introduced for liver MRI, but it is unclear if multiple AP MRI improves image quality and lesion detection rate on gadoxetate disodium-u2013enhanced MRI in comparison to single AP MRI. The lesion detection rate was determined by four studies out of 772 articles; 22 studies in 12 journals were included: In 12 studies, 22 articles were reviewed, and 22 studies were published: 18 studies properly described the percentage of good AP imaging and two others included the lesion detection rate. A 16. 1% higher pooled percentage of good AP imaging than SA-MRI showed a 16. 1% higher pooled percentage of adequate AP imaging than SA-MRI. In comparison to SA-MRI, MA-MRI revealed 32. 2 percent of lesions than SA-MRI. Conclusions Gadoxetate disodium/u2013enhanced MA-MRI may be more clinically relevant than SA-MRI, but further research is required to validate this result due to study heterogeneity and publication bias. U2022 Multiple arterial-phase MRI had a 16. 1% higher pooled percentage of adequate AP imaging than single arterial-phase MRI.

Source link: https://doi.org/10.1007/s00330-022-08620-x


Quantitative magnetic resonance imaging measures as biomarkers of disease progression in boys with Duchenne muscular dystrophy: a phase 2 trial of domagrozumab

Duchenne muscular dystrophy is a progressive, neuromuscular disorder caused by mutations in the DMD gene that result in a lack of functional dystrophin protein. DMD-inhibited infants with DMD were enrolled in a multicenter phase 2 randomized, placebo-controlled clinical trial evaluating the myostatin inhibitor domagrozumab in ambulatory boys with DMD. Herein, we discuss the use of quantitative magnetic resonance imaging techniques as biomarkers. Muscle mass, MVI, T2 mapping tools, and fat fraction analysis were all significantly associated with longer-term performance increases in four-stair climb times and North Star Ambulatory Assessment functional ratings, and further investigate quantitative MRI findings as biomarkers to inform longer-term functional changes in this cohort. Lastly, less reliable baseline measures of MVI, fat fraction of the muscle bundle, and lean muscle's fat fraction were all significant risk factors for loss of ambulation over a two-year study cycle.

Source link: https://doi.org/10.1007/s00415-022-11084-0

* 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