scholarly journals MRI predicts 5-year joint bleeding and development of arthropathy on radiographs in hemophilia

2020 ◽  
Vol 4 (1) ◽  
pp. 113-121 ◽  
Author(s):  
Wouter Foppen ◽  
Irene C. van der Schaaf ◽  
Frederik J. A. Beek ◽  
Willem P. T. M. Mali ◽  
Kathelijn Fischer
Keyword(s):  
Predictive Value ◽  
Mri Findings ◽  
Synovial Hypertrophy ◽  
Mri Scans ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Changes ◽  
Bleeding History ◽  
Radiographic Changes ◽  
Mri Score

Abstract Magnetic resonance imaging (MRI) is considered as the reference standard to assess early joint changes in hemophilia. However, the clinical relevance of MRI findings is still unknown. The aim of this prospective study was to assess the predictive value of MRI for 5-year joint bleeding and progression of arthropathy in patients with hemophilia. Both knees and ankles of patients with hemophilia and absent or limited arthropathy on radiographs were assessed by using MRI and radiographs. MRI scans were scored according to the International Prophylaxis Study Group MRI score for hemophilic arthropathy. Patients were followed up for 5 years, including assessment of joint bleeding and repeated radiographic assessment. Associations between baseline MRI findings with 5-year bleeding and progression of arthropathy were expressed as odds ratios (OR), adjusted for severity of disease and joint bleeding history. Baseline assessment included 104 joints of 26 patients with hemophilia (median age, 21 years). Four ankles with severe joint changes were excluded. Follow-up was available for 96 (92%) of 104 joints. During 5 years of follow-up, bleeding was reported for 36% of joints. Five-year bleeding was significantly increased in joints with synovial hypertrophy at 80% vs 27% in joints without synovial hypertrophy (OR, 10.1; 95% confidence interval, 3.4-31.3). In joints with normal baseline radiographs, any osteochondral or synovial changes on MRI were associated with radiographic changes 5 years later (positive predictive value, 75%; negative predictive value, 98%). Joints with synovial hypertrophy on MRI had a significantly higher chance of 5-year bleeding. All MRI changes, except effusion, were strong predictors for development of arthropathy on radiographs.

scholarly journals Asymptomatic Brain Edema after Hemodialysis Initiation in a Patient with Severe Uremia

2017 ◽  
Vol 2017 ◽  
pp. 1-6
Author(s):  
Kiichiro Fujisaki ◽  
Kaneyasu Nakagawa ◽  
Hiroshi Nagae ◽  
Toshiaki Nakano ◽  
Masatomo Taniguchi ◽  
...  
Keyword(s):  
Cerebral Edema ◽  
Occipital Lobe ◽  
Neurological Deficits ◽  
Mri Findings ◽  
Severe Renal Insufficiency ◽  
Cranial Mri ◽  
Dialysis Disequilibrium Syndrome ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Changes

A 66-year-old man with severe renal insufficiency presented with mild confusion associated with uremia. Cranial magnetic resonance imaging (MRI) showed no remarkable changes. The patient was placed on short-duration hemodialysis (2 hours) with smaller surface area and low blood flow (100 mL/min) to avoid dialysis disequilibrium syndrome (DDS). His consciousness gradually improved and he did not develop apparent DDS symptoms. However, T2-weighted FLAIR MRI showed increased signal intensities bilaterally in the cortical and subcortical areas of the occipital lobe on day 15. In other words, cranial MRI showed cerebral edema, indicating asymptomatic DDS. On day 29, cranial MRI showed a return to findings on admission. In this case, because the patient did not have apparent DDS symptoms despite MRI changes, we diagnosed asymptomatic cerebral edema. The patient was discharged on regular intermittent HD without any neurological deficits. No further neurological disturbances were noted during 1-year follow-up. MRI findings in ESKD patients without DDS symptoms help to clarify the diagnosis of cerebral edema. In this case, the patient did not have apparent DDS symptoms and was therefore diagnosed with asymptomatic cerebral edema.

Accuracy of Rotator Cuff Tears and Tendinosis Diagnoses on Shoulder Ultrasound Performed by a Short-experienced Operator

2018 ◽  
Vol 1 ◽  
pp. 9
Author(s):  
Harshad Arvind Vanjare ◽  
Jyoti Panwar
Keyword(s):  
Rotator Cuff ◽  
Negative Predictive Value ◽  
Rotator Cuff Tear ◽  
Predictive Value ◽  
Rotator Cuff Tears ◽  
Mri Findings ◽  
Cuff Tear ◽  
Experienced Operator ◽  
Magnetic Resonance Imaging Mri ◽  
Sensitivity Specificity

Objective The objective of the study was to assess the accuracy of ultrasound examination for the diagnosis of rotator cuff tear and tendinosis performed by a short experienced operator, compared to magnetic resonance imaging (MRI) results. Method A total of 70 subjects suspected to have rotator cuff tear or tendinosis and planned for shoulder MRI were included in the study. Shoulder ultrasound was performed either before or after the MRI scan on the same day. Ultrasound operator had a short experience in performing an ultrasound of the shoulder. Ultrasound findings were correlated to MRI findings. Results Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy for the diagnosis of tendinosis were 58%, 84%, 63%, 80%, and 75%, respectively, and it was 68%, 91%, 73%, 88%, and 85%, respectively, for the diagnosis of rotator cuff tear. Conclusions Sensitivity for diagnosing rotator cuff tear or tendinosis was moderate but had a higher negative predictive value. Thus, the ultrasound operator with a short experience in performing shoulder ultrasound had moderate sensitivity in diagnosing tendinosis or tears; however, could exclude them with confidence.

scholarly journals Brain atrophy and clinical characteristics predicting SDMT performance in multiple sclerosis: A 10-year follow-up study

2021 ◽  
Vol 7 (1) ◽  
pp. 205521732199239
Author(s):  
Cecilie Jacobsen ◽  
Robert Zivadinov ◽  
Kjell-Morten Myhr ◽  
Turi O Dalaker ◽  
Ingvild Dalen ◽  
...  
Keyword(s):  
Clinical Data ◽  
Grey Matter Volume ◽  
Lesion Volume ◽  
Information Processing Speed ◽  
Disability Status ◽  
Mri Scans ◽  
Patients At Risk ◽  
Magnetic Resonance Imaging Mri ◽  
Specific Volumes

Objectives To identify Magnetic Resonance Imaging (MRI), clinical and demographic biomarkers predictive of worsening information processing speed (IPS) as measured by Symbol Digit Modalities Test (SDMT). Methods Demographic, clinical data and 1.5 T MRI scans were collected in 76 patients at time of inclusion, and after 5 and 10 years. Global and tissue-specific volumes were calculated at each time point. For the primary outcome of analysis, SDMT was used. Results Worsening SDMT at 5-year follow-up was predicted by baseline age, Expanded Disability Status Scale (EDSS), SDMT, whole brain volume (WBV) and T2 lesion volume (LV), explaining 30.2% of the variance of SDMT. At 10-year follow-up, age, EDSS, grey matter volume (GMV) and T1 LV explained 39.4% of the variance of SDMT change. Conclusion This longitudinal study shows that baseline MRI-markers, demographic and clinical data can help predict worsening IPS. Identification of patients at risk of IPS decline is of importance as follow-up, treatment and rehabilitation can be optimized.

scholarly journals Cross-sectional analysis of follow-up chest MRI and chest CT scans in patients previously affected by COVID-19

2021 ◽  
Author(s):  
Martina Pecoraro ◽  
Stefano Cipollari ◽  
Livia Marchitelli ◽  
Emanuele Messina ◽  
Maurizio Del Monte ◽  
...  
Keyword(s):  
Chest Ct ◽  
Ct Scans ◽  
Imaging Biomarker ◽  
Cross Sectional ◽  
Mri Scans ◽  
Magnetic Resonance Imaging Mri ◽  
Sectional Analysis ◽  
Ct And Mri ◽  
Interlobular Septal Thickening

Abstract Purpose The aim of the study was to prospectively evaluate the agreement between chest magnetic resonance imaging (MRI) and computed tomography (CT) and to assess the diagnostic performance of chest MRI relative to that of CT during the follow-up of patients recovered from coronavirus disease 2019. Materials and methods Fifty-two patients underwent both follow-up chest CT and MRI scans, evaluated for ground-glass opacities (GGOs), consolidation, interlobular septal thickening, fibrosis, pleural indentation, vessel enlargement, bronchiolar ectasia, and changes compared to prior CT scans. DWI/ADC was evaluated for signal abnormalities suspicious for inflammation. Agreement between CT and MRI was assessed with Cohen’s k and weighted k. Measures of diagnostic accuracy of MRI were calculated. Results The agreement between CT and MRI was almost perfect for consolidation (k = 1.00) and change from prior CT (k = 0.857); substantial for predominant pattern (k = 0.764) and interlobular septal thickening (k = 0.734); and poor for GGOs (k = 0.339), fibrosis (k = 0.224), pleural indentation (k = 0.231), and vessel enlargement (k = 0.339). Meanwhile, the sensitivity of MRI was high for GGOs (1.00), interlobular septal thickening (1.00), and consolidation (1.00) but poor for fibrotic changes (0.18), pleural indentation (0.23), and vessel enlargement (0.50) and the specificity was overall high. DWI was positive in 46.0% of cases. Conclusions The agreement between MRI and CT was overall good. MRI was very sensitive for GGOs, consolidation and interlobular septal thickening and overall specific for most findings. DWI could be a reputable imaging biomarker of inflammatory activity.

Abstract WMP102: Prevalence and Natural History of Superficial Siderosis: A Population-based Study

Stroke ◽  
2017 ◽  
Vol 48 (suppl_1) ◽  
Author(s):  
Michael Pichler ◽  
Kelly Flemming ◽  
Alejandro Rabinstein ◽  
Robert Brown ◽  
Kejal Kantarci ◽  
...  
Keyword(s):  
Population Based ◽  
Superficial Siderosis ◽  
Mri Findings ◽  
Population Based Study ◽  
Mri Scans ◽  
History Of ◽  
Lobar Hemorrhage ◽  
General Elderly Population ◽  
Cortical Superficial Siderosis

Introduction: Cortical superficial siderosis (cSS) refers to deposition of blood breakdown products along the cerebral cortex, causing characteristic staining patterns seen with iron-sensitive MRI techniques. Cortical superficial siderosis is a relatively rare disorder, but has been linked to cerebral amyloid angiopathy and Alzheimer’s disease. The objective of this study was to determine the frequency and natural history of cSS in the general elderly population. Methods: MRI scans from the Mayo Clinic Study of Aging (MCSA), an ongoing population-based study of elderly residents in Olmsted County, Minnesota, were reviewed by neuroradiologists. Participants with cSS were identified based on linear pattern of hypointensity on gradient recalled echo imaging consistent with cSS. Exclusion criteria were: 1) MRI findings not consistent with cSS or 2) alternative explanation for MRI findings (such as aneurysmal subarachnoid hemorrhage, intracranial surgery, or trauma). Additional data abstracted included extent of cSS, presence of cerebral microbleeds, and clinical outcome. Results: Eleven out of 1,441 participants had MRI scans showing cSS (0.8%). When stratified by age, the frequency was 0.4% in those 50 to 70 years old and 1.1% in those over 70 years old. Six participants had only focal involvement of cSS (restricted to three or fewer sulci) and five had disseminated involvement (affecting more than three sulci). Microbleeds were seen in four of five (80%) participants with disseminated cSS, but none with focal cSS. Five participants (2 focal, 3 disseminated cSS) had follow up MRI scans, with an average follow up of 25 months. There was no further hemorrhage in those with focal cSS. However, all three participants with disseminated cSS experienced additional hemorrhage: one with new microbleeds, one with new microbleeds and lobar hemorrhage, and one with sulcal subarachnoid hemorrhage and lobar hemorrhage. Conclusion: Although rare, cSS may be encountered in the general elderly population. Extent of involvement of cSS and concomitant microbleeds may be important risk factors for progression of disease and intracerebral hemorrhage. The clinical significance of focal cSS occurring in the absence of microbleeds requires further investigation.

Posterior Reversible Encephalopathy (PRES) in a Child with Severe Dengue

2019 ◽  
Vol 66 (3) ◽  
pp. 322-326
Author(s):  
Yogini Sawant ◽  
Suresh Birajdar ◽  
Hiren Doshi ◽  
Pooja Soni ◽  
Deepak Patkar ◽  
...  
Keyword(s):  
Pediatric Population ◽  
White Blood Cells ◽  
Neurological Complications ◽  
Severe Dengue ◽  
Mri Findings ◽  
Posterior Reversible Encephalopathy ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Changes ◽  
Reversible Encephalopathy ◽  
Csf Examination

Abstract Among neurological complications associated with dengue, posterior reversible encephalopathy syndrome (PRES) has not been reported in pediatric population. We report a 10-year-old girl with severe dengue who developed PRES. The patient presented with hemorrhagic shock that required fluid resuscitation and inotropic support. She developed seizures with encephalopathy 2 days after recovering from the shock. Cerebrospinal fluid (CSF) examination was negative for dengue (no white blood cells in CSF with negative polymerase chain reaction for dengue). Her clinical features and magnetic resonance imaging (MRI) findings showed typical changes associated with posterior encephalopathy that reverted after resolution of hypertension. Repeat MRI after a month was normal. PRES should be considered as a possible differential diagnoses of dengue associated encephalopathy, especially in cases with normal CSF examination and characteristic MRI changes.

Acute and subacute prostate MRI findings after MRI-guided transurethral ultrasound ablation of prostate cancer

2020 ◽  
pp. 028418512097693
Author(s):  
Pietari Mäkelä ◽  
Mikael Anttinen ◽  
Visa Suomi ◽  
Aida Steiner ◽  
Jani Saunavaara ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Diagnostic Value ◽  
Optimal Timing ◽  
Mri Findings ◽  
Apparent Diffusion Coefficient Values ◽  
Mri Scans ◽  
Ultrasound Ablation ◽  
Mri Guided ◽  
Transurethral Ultrasound

Background Magnetic resonance imaging (MRI)-guided transurethral ultrasound ablation (TULSA) is an emerging method for treatment of localized prostate cancer (PCa). TULSA-related subacute MRI findings have not been previously characterized. Purpose To evaluate acute and subacute MRI findings after TULSA treatment in a treat-and-resect setting. Material and Methods Six men with newly diagnosed MRI-visible and biopsy-concordant clinically significant PCa were enrolled and completed the study. Eight lesions classified as PI-RADS 3–5 were focally ablated using TULSA. One- and three-week follow-up MRI scans were performed between TULSA and robot-assisted laparoscopic prostatectomy. Results TULSA-related hemorrhage was detected as a subtle T1 hyperintensity and more apparent T2 hypointensity in the MRI. Both prostate volume and non-perfused volume (NPV) markedly increased after TULSA at one week and three weeks after treatment, respectively. Lesion apparent diffusion coefficient values increased one week after treatment and decreased nearing the baseline values at the three-week MRI follow-up. Conclusion The optimal timing of MRI follow-up seems to be at the earliest at three weeks after treatment, when the post-procedural edema has decreased and the NPV has matured. Diffusion-weighted imaging has little or no added diagnostic value in the subacute setting.

scholarly journals Pilomyxoid Astrocytoma: Case Report

2018 ◽  
Vol 37 (01) ◽  
pp. 54-57
Author(s):  
Renato Pignatari ◽  
Manoel Teixeira ◽  
Eberval Figueiredo
Keyword(s):  
Subtotal Resection ◽  
Thalamic Lesion ◽  
Separate Entity ◽  
Medical Assistance ◽  
Hypothalamic Area ◽  
Pilomyxoid Astrocytoma ◽  
Mri Scans ◽  
Magnetic Resonance Imaging Mri ◽  
Immunohistochemical Studies

AbstractThe pilomyxoid astrocytoma (PMA) is a rare glioma recently described as a separate entity, which is generally located on the hypothalamic area. The PMA was previously described as pilocytic astrocytoma (PA) due to similarities shared between them. Recent studies provided a deeper understanding of PMA, setting it as a separate entity, though PMA is still considered by many authors a variant of PA. The PMA is considered to be more aggressive than PA; however, further studies are necessary for a better comprehension of its behavior and, hence, for neurosurgeons and neurologists to get to a consensus about its management.This study presents a 16-year-old female patient who looked for medical assistance complaining of headaches of over 6 months and vomiting for 2 weeks prior to the visit to the doctor. She presented no other symptoms. The physical examination displayed only bilateral papilledema. The magnetic resonance imaging (MRI) scans showed an intraventricular and thalamic lesion composed of solid and cystic material associated with peritumoral edema. The patient underwent ventriculoperitoneal shunt and subtotal resection of the lesion. The histological and immunohistochemical studies showed typical features of PMA. The patient started adjuvant therapy with chemotherapy and radiosurgery. She has been asymptomatic for 9 months and has shown no signs of progression of the disease on the follow-up scans.

Neurologic Examination Findings Associated With Small Cerebellar Volumes After Prematurity

2019 ◽  
Vol 34 (10) ◽  
pp. 586-592
Author(s):  
Emily W.Y. Tam ◽  
Vann Chau ◽  
Raphaël Lavoie ◽  
M. Mallar Chakravarty ◽  
Ting Guo ◽  
...  
Keyword(s):  
Brain Magnetic Resonance Imaging ◽  
Postural Instability ◽  
White Matter Injury ◽  
Neurologic Examination ◽  
Equivalent Age ◽  
Cerebellar Volume ◽  
Mri Scans ◽  
Magnetic Resonance Imaging Mri ◽  
Deformation Based Morphometry

To help clinicians understand what to expect from small cerebellar volumes after prematurity, this study aims to characterize the specific impacts of small cerebellar volumes on the infant neurologic examination. A prospective cohort of preterm newborns (<32 weeks’ gestational age) had brain magnetic resonance imaging (MRI) studies at term-equivalent age. Cerebellar volumes were compared with neurologic examination findings in follow-up, adjusting for severity of intraventricular hemorrhage, white matter injury, and cerebellar hemorrhage. Deformation-based analyses delineated regional morphometric differences in the cerebellum associated with these findings. Of 119 infants with MRI scans, 109 (92%) had follow-up at 19.0±1.7 months corrected age. Smaller cerebellar volume at term was associated with increased odds of truncal hypotonia, postural instability on standing, and patellar hyperreflexia ( P < .03). Small cerebellar volume defined as <19 cm3 by 40 weeks was associated with 7.5-fold increased odds of truncal hypotonia ( P < .001), 8.9-fold odds postural instability ( P < .001), and 9.7-fold odds of patellar hyperreflexia ( P < .001). Voxel-based deformation-based morphometry showed postural instability associated with paravermian regions. Small cerebellar volume is associated with specific abnormalities on neurologic examination by 18 months of age, including truncal tone, reflexes, and postural stability.

The contribution of assessing cognitive impairment in radiologically-isolated syndrome (RIS): a single case report follow-up study

2014 ◽  
Vol 20 (14) ◽  
pp. 1912-1915 ◽  
Author(s):  
L D’Anna ◽  
S Lorenzut ◽  
A Perelli ◽  
B Zanchettin ◽  
M Valente ◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
Single Case ◽  
Brain Magnetic Resonance Imaging ◽  
Single Case Report ◽  
Radiologically Isolated Syndrome ◽  
Therapeutic Decisions ◽  
Mri Scans ◽  
Incidental Discovery ◽  
Magnetic Resonance Imaging Mri

Radiologically-isolated syndrome (RIS) is a recently-defined entity, described as the incidental discovery of lesions suggestive of multiple sclerosis (MS) on brain magnetic resonance imaging (MRI) scans demonstrating dissemination in space (DIS) without symptom expression and with a normal neurological examination. Recent studies demonstrate that RIS patients present similar features of cognitive impairment as MS patients. We describe a case of a RIS patient in whom investigating cognitive functions was a useful tool for diagnostic and therapeutic decisions.

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