Amyand's hernia in a 2-month-old infant: The first case report from Sudan.

INTRODUCTION AND IMPORTANCE: Amyand's hernia (AH) is an extremely rare type of inguinal hernia where the vermiform appendix is present within the inguinal hernia sac. This report documents the first known instance of AH in Sudan, highlighting its unprecedented occurrence in this region. CASE PRESENTATION: A 2-month-old infant presented to the ER with an obstructed right-sided inguinal hernia for 6 h. During surgical repair, an inflamed appendix was found within the hernial sac. The appendix was ligated, excised, herniotomy was performed to repair the hernia, and the appendix was sent for histopathological examination. CLINICAL DISCUSSION: This case underscores the importance of recognizing rare presentations of common conditions in different geographical and demographic contexts. The co-occurrence of acute appendicitis and AH in infants poses a diagnostic challenge, often only detected incidentally during surgical exploration. CONCLUSION: By presenting this unique case, we aim to raise awareness about the potential for such rare hernias in pediatric populations. Early recognition and proper management are crucial for ensuring optimal patient outcomes and preventing complications associated with delayed diagnosis or treatment.

Assessing the Influence of Age, Weight, and Pirani Score on the Number of Casts During the Initial Phase of Clubfoot Treatment Using the Ponseti Method: A Prospective Study.

Background: Clubfoot, also known as congenital talipes equinovarus is a prevalent childhood ailment that, if untreated, can lead to long-term discomfort and impairment. The Ponseti technique, aimed at achieving corrected foot positioning, is widely accepted. This study investigated the influence of clubfoot severity (Pirani score), patient age, and initial manipulation and casting weight on the overall number of casts needed for effective treatment. Methods: A prospective study was carried out involving 40 idiopathic clubfoot patients where manipulation and casting were performed following the Ponseti method. Patient age, weight, and foot Pirani score were evaluated concerning the total number of casts needed to achieve 70° of abduction. Results: The majority of participants were male infants aged 4-6 months, with a median age of 4.5 months. Half of them weighed between 3.00 and 4.99 kg at their first hospital visit, with a median weight of 3.20 kg. Bilateral clubfoot involvement was common (57.5%). Children with Pirani HFCS 2.0-3 often required percutaneous tenotomy (87.5%, p value 0.05). On average, patients needed 5 casts (range 3-9). The mean total Pirani scores were 4.71 for the right foot and 4.61 for the left foot. The study reported a positive correlation between higher total Pirani scores and the required number of casts. Conclusions: The Pirani scoring system is highly accurate in assessing clubfoot severity and predicting treatment success. It emerged as the single most significant predictor for both the total number of casts and the need for percutaneous tenotomy.

The Long-Pulse Potassium-Titanyl-Phosphate Laser: Promising Treatment for Resistant Port-Wine Stains.

Port-wine stains (PWSs), or port-wine birthmarks, are congenital vascular malformations that manifest as erythematous to pink patches at birth. At present, lasers are the preferred method for treating PWSs, with pulsed dye laser (PDL) being regarded as the gold standard because of its superior efficacy compared to alternative procedures. Despite the progress made in laser therapy, a subset of patients continue to experience PWSs that cannot be resolved effectively even with PDL. A new long-pulse potassium-titanyl-phosphate (KTP) laser with a trail of sub-pulses (Derma V, Lutronic, Seoul, South Korea) is a promising treatment for PWSs resistant to PDL therapies. This is a case of a female patient with PDL-resistance PWSs that was treated successfully with a long-pulse KTP laser. Long-pulse KTP appears to be not just more effective in treating PDL-resistant PWSs but also less costly as less number of sessions are needed, with no significant side effects reported such as purpura.

Transbronchial lymph node forceps biopsy as a novel tool in diagnosis of mediastinal lymphadenopathy: a pilot study.

BACKGROUND: Differential diagnosis of mediastinal lymphadenopathy is an issue of debate. Lymph nodes may be enlarged due to a variety of inflammatory, infectious, or malignant reasons. Therefore, obtaining samples from the affected nodes is crucial for the diagnosis. Usually, these patients are subjected to TBNA (EBUS or conventional) or mediastinoscopy if TBNA is not conclusive. This study evaluated the safety and feasibility of this new technique of transbronchial forceps biopsy for the diagnosis of mediastinal lymphadenopathy. METHODS: The study included 18 patients with confirmed mediastinal lymphadenopathy who were admitted in Chest Department, Cairo University in the period from December 2019 to December 2020. All patients were subjected to flexible bronchoscopy with conventional transbronchial needle aspiration (C-TBNA) and transbronchial forceps biopsy (LN-TBFB) from the enlarged mediastinal lymph node in the same procedure. RESULTS: we found the technique of LN-TBFB safe with no serious complications. We were able to reach a diagnosis in 7/7 (100%) cases of sarcoidosis, 6/7 (85.7%) cases of malignant lymph nodes. We had three cases where the histopathology showed hyperactive follicular hyperplasia, and a single case of tuberculous lymphadenitis. C-TBNA was diagnostic in 71.4% of sarcoidosis cases, 42.9% of malignant cases, but failed to diagnose the one patient with tuberculous lymphadenitis. CONCLUSION: Lymph node transbronchial forceps biopsy (LN-TBFB) was found to be safe and effective in the diagnosis of mediastinal lymphadenopathy. We strongly advocate the use of this minimally invasive technique for diagnosing pathologically enlarged mediastinal lymph nodes, as a last step before mediastinoscopy.

A Modified and Refined Classification System for Secondary Cleft Nasolabial Deformities.

Secondary cleft lip (CL) deformities are commonly encountered in cleft management. Various attempts have been made to create a classification system that can comprehensively encapsulate residual CL deformities after primary repair. The aim of this study is to reinforce valid classification systems and to introduce a new classification subtype (Type V Revision). A longitudinal retrospective analysis was done in 35 outreach programs in 4 countries (Ecuador, Lebanon, Peru, and El Salvador) between 2015 and 2023. Two hundred sixty-nine patients, between the ages of 9 months and 45 years, with residual CL deformities after primary lip repair, were classified into one of the 5 classification types. Patients with syndromes were excluded from the study. Patients received one of 5 revision types depending on their initial preoperative evaluation and intraoperative analysis of anatomic involvement. The mean age at surgery was 12.86 years. Twenty-five patients received type I revision, 29 patients received type II revision, 81 patients received type III revision, 106 patients received type IV revision, and 28 patients received type V revision. As the surgical complexity advanced from type I to V, there was a gradual increase in the average surgical time. The Congruence between preoperative and postoperative revision types was substantial. Residual CL defects cause a significant burden on both the patient and cleft care provider. This classification system, with the newly introduced type V revision, enhances and eases the categorization and management of secondary CL deformities.

Ergonomics for Cleft Providers: A Brief Communication.

Musculoskeletal (MSK) injuries are the most common and debilitating work-related injuries among healthcare providers. These injuries often occur due to a lack of awareness and insufficient guidance during the early years of medical training. Recognizing the need to address this issue, the Comprehensive Cleft Care Workshop (CCCW) has taken steps to integrate an ergonomics session into its curriculum. The goal of this initiative is to enhance awareness on ergonomics, improve the integration of ergonomics into daily routine, and ultimately reduce the occurrence of MSK injuries among healthcare professionals.

Single-Stage Posterior Vomerine Ostectomy and Primary Cheiloplasty in Patients with Bilateral Cleft Lip & Palate and Protuberant Premaxilla.

OBJECTIVE: A protruded premaxilla has always been challenging to care for by cleft care professionals. This study aims to fortify the use of a single-stage premaxillary setback, with posterior vomerine ostectomy and primary cheiloplasty to achieve proper care for patients with bilateral cleft lip and palate (BCLP) and protruded premaxilla. DESIGN: Longitudinal retrospective analysis. SETTING: Twenty-three outreach programs to four countries (Ecuador, Lebanon, Peru, and El-Salvador) between 2016-2022. PATIENTS/PARTICIPANTS: Sixty-five patients between the ages of 3 months and 6 years and 5 months, with BCLP and severely protruded premaxilla underwent premaxillary setback via posterior vomerine ostectomy and primary cheiloplasty. Patients with diagnosed syndromes and inaccessible vomer bone due to fused palates were excluded from the study. INTERVENTIONS: Premaxillary setback with posterior vomerine ostectomy, bilateral gingivoperiosteoplasties (GPP), and primary cheiloplasty. MAIN OUTCOME MEASURE(S): Postoperative complications and aesthetic outcomes. RESULTS: The mean age at surgery was 13.17 ± 14.1 months, with an average follow-up time of 26 ± 17 months. Patients underwent their procedures in Ecuador (72%), Peru (9%), Lebanon (8%) and El-Salvador (1%). The majority of patients were aged 1 year or less (66.7%) and were males (58.5%). All patients were operated on successfully and had good aesthetic outcomes. Only one patient developed partial necrosis. CONCLUSION: Patients with BCLP and severe premaxillary protrusion have always carried immense social, psychological, and financial burdens, especially in outreach settings. Our described single-stage technique has proven to be safe and effective with good aesthetic results. Further follow-up after primary repair should be done to document and ensure proper facial growth and normal nasolabial maturation.

Violence and sociodemographic related factors among a sample of Egyptian women during the COVID-19 pandemic.

BACKGROUND: Violence against women is a worldwide problem that affects different social and economic classes, and this violence has almost increased with pandemics as the COVID-19 pandemic. The present survey aimed to assess the prevalence of violence against women in Egypt during the COVID-19 pandemic and to identify the relationship between sociodemographic factors and violence exposure. A total of 509 women were recruited using a self-completion e-form questionnaire. RESULTS: The prevalence of violence experienced by women was (43.8%); the most common type was the emotional representing (96.0%) of exposed women, while sexual violence was the least common (13.5%). Violence exposure was affected significantly by residence governorates, husbands' working status, reduced husbands' working hours, and history of violence exposure. CONCLUSIONS: Violence against women in Egypt was increased during the COVID-19 pandemic, which raises the need for a strong and urgent anti-violence program to control this problem.

An Interventional Call-Back Service to Improve Appropriate Use of Antibiotics in Community Pharmacies.

Pharmacists play a key role in tackling antibiotic misuse through counseling and education of patients and healthcare providers. The study aim is to evaluate the appropriateness of antibiotic prescriptions in community pharmacy settings while implementing an interventional call-back service to assess adherence and symptom resolution among patients prescribed an antibiotic. Patients were recruited by community pharmacists who were assigned to either the call-back, structured counseling, or standard care arms. Patients in the call-back group received intensive antibiotic counseling and a phone call from the study pharmacist 3 to 5 days after antibiotic initiation. The counseling arm patients received intensive antibiotic counseling from the study pharmacist while patients in the standard care arm received routine care. Antibiotic adherence rates among the standard care (n = 25), counseling (n = 29), and call-back (n = 26) groups were 64%, 86.2%, and 88.5%, respectively (X2 = 5.862, p = 0.053). Symptom severity scores after completion of antibiotic treatment among all groups were rated as excellent. Twenty-nine percent of the outpatient antibiotic prescriptions were deemed as inappropriate. A pharmacist call-back service is a simple and inexpensive intervention which can effectively identify opportunities for improving appropriate antibiotic use, particularly with respect to adherence.

Statin-induced anti-HMGCR myopathy: successful therapeutic strategies for corticosteroid-free remission in 55 patients.

OBJECTIVE: To describe successful therapeutic strategies in statin-induced anti-HMGCR myopathy. METHODS: Retrospective data from a cohort of 55 patients with statin-induced anti-HMGCR myopathy, sequentially stratified by the presence of proximal weakness, early remission, and corticosteroid and IVIG use at treatment induction, were analyzed for optimal successful induction and maintenance of remission strategies. RESULTS: A total of 14 patients achieved remission with a corticosteroid-free induction strategy (25%). In 41 patients treated with corticosteroids, only 4 patients (10%) failed an initial triple steroid/IVIG/steroid-sparing immunosuppressant (SSI) induction strategy. Delay in treatment initiation was independently associated with lower odds of successful maintenance with immunosuppressant monotherapy (OR 0.92, 95% CI 0.85 to 0.97, P = 0.015). While 22 patients (40%) presented with normal strength, only 9 had normal strength at initiation of treatment. CONCLUSION: While corticosteroid-free treatment of anti-HMGCR myopathy is now a safe option in selected cases, initial triple steroid/IVIG/SSI was very efficacious in induction. Delays in treatment initiation and, as a corollary, delays in achieving remission decrease the odds of achieving successful maintenance with an SSI alone. Avoiding such delays, most notably in patients with normal strength, may reset the natural history of anti-HMGCR myopathy from a refractory entity to a treatable disease.

Laparoscopic management of uncommon benign uterine tumors: a systematic review.

The objective of the study was to review the reported cases of uncommon benign uterine tumors managed by laparoscopy. Medline database was searched using predefined search terms linked to atypical leiomyomas, leiomyoma variants, laparoscopy and morcellation. Quality of articles was assessed using Joanna Briggs Institute (JBI) critical appraisal tool. Due to heterogeneity in reporting characteristics of the patients, radiological findings, macroscopic findings, histological characteristics and follow-up, we performed a narrative synthesis. We included 109 cases of leiomyoma variants managed by laparoscopy. This stands for an incidence of 2.5% out of all the included laparoscopic management of leiomyomas. These cases were approached as classic leiomyoma. Only after the final histological results that their uncommon aspect was diagnosed. Intra-operatively, the management was similar to that of leiomyoma, with either myomectomy or hysterectomy performed depending on each individual case. Follow-up of these cases was variable: one case (0.9%) recurred as peritoneal sarcoma after 5 years of follow-up. It is important for the gynecologist, radiologist and pathologist to be aware about leiomyoma variants trying to diagnose them preoperatively. Strict follow-up of these cases is mandatory, because of the risk of recurrence and the very low but possible risk of future sarcomas.

Canadian Rheumatology Association Recommendations for the Assessment and Monitoring of Systemic Lupus Erythematosus.

OBJECTIVE: To develop recommendations for the assessment of people with systemic lupus erythematosus (SLE) in Canada. METHODS: Recommendations were developed using the GRADE (Grading of Recommendations Assessment, Development, and Evaluation) approach. The Canadian SLE Working Group (panel of Canadian rheumatologists and a patient representative from Canadian Arthritis Patient Alliance) was created. Questions for recommendation development were identified based on the results of a previous survey of SLE practice patterns of members of the Canadian Rheumatology Association. Systematic literature reviews of randomized trials and observational studies were conducted. Evidence to Decision tables were prepared and presented to the panel at 2 face-to-face meetings and online. RESULTS: There are 15 recommendations for assessing and monitoring SLE, with varying applicability to adult and pediatric patients. Three recommendations focus on diagnosis, disease activity, and damage assessment, suggesting the use of a validated disease activity score per visit and annual damage score. Strong recommendations were made for cardiovascular risk assessment and measuring anti-Ro and anti-La antibodies in the peripartum period and conditional recommendations for osteoporosis and osteonecrosis. Two conditional recommendations were made for peripartum assessments, 1 for cervical cancer screening and 2 for hepatitis B and C screening. A strong recommendation was made for annual influenza vaccination. CONCLUSION: These are considered the first guidelines using the GRADE method for the monitoring of SLE. Existing evidence is largely of low to moderate quality, resulting in more conditional than strong recommendations. Additional rigorous studies and special attention to pediatric SLE populations and patient preferences are needed.

Monitoring of Osteonecrosis in Systemic Lupus Erythematosus: A Systematic Review and Metaanalysis.

OBJECTIVE: Nontraumatic osteonecrosis (ON) is a well-recognized complication causing disability and affecting quality of life in patients with systemic lupus erythematosus (SLE). The aim of this study was to identify the risk factors for ON, and to identify the minimal investigation(s) needed to optimally monitor the risk of ON in patients with SLE. METHODS: A systematic review was conducted using MEDLINE and EMBASE. These databases were searched up to January 2016 using the Medical Subject Heading (MeSH) terms "Osteonecrosis," "Systemic lupus erythematosus," and synonymous text words. Randomized controlled trials, case control, cohort, and cross-sectional studies were included. Risk factors for ON in patients with SLE were compiled. The quality of each study was assessed using the Newcastle-Ottawa scale for nonrandomized studies. The quality of evidence of each risk factor was assessed using the Grading of Recommendations, Assessment, Development, and Evaluation method. RESULTS: Of the 545 references yielded, 50 met inclusion criteria. Corticosteroid (CS) use may be strongly associated with ON in patients with SLE. Other clinical variables were moderately associated, including hypertension, serositis, renal disease, vasculitis, arthritis, and central nervous system disease. However, the evidence was low to very low in quality. CONCLUSION: Based on the best evidence available, CS use may be strongly associated with ON in patients with SLE. Results of this review were considered in the development of recommendations for the diagnosis and monitoring of patients with SLE in Canada and will guide clinicians in their assessment of these patients.

Improved operator agreement and efficiency using the minimum area contour change method for delineation of hyperintense multiple sclerosis lesions on FLAIR MRI.

BACKGROUND: Activity of disease in patients with multiple sclerosis (MS) is monitored by detecting and delineating hyper-intense lesions on MRI scans. The Minimum Area Contour Change (MACC) algorithm has been created with two main goals: a) to improve inter-operator agreement on outlining regions of interest (ROIs) and b) to automatically propagate longitudinal ROIs from the baseline scan to a follow-up scan. METHODS: The MACC algorithm first identifies an outer bound for the solution path, forms a high number of iso-contour curves based on equally spaced contour values, and then selects the best contour value to outline the lesion. The MACC software was tested on a set of 17 FLAIR MRI images evaluated by a pair of human experts and a longitudinal dataset of 12 pairs of T2-weighted Fluid Attenuated Inversion Recovery (FLAIR) images that had lesion analysis ROIs drawn by a single expert operator. RESULTS: In the tests where two human experts evaluated the same MRI images, the MACC program demonstrated that it could markedly reduce inter-operator outline error. In the longitudinal part of the study, the MACC program created ROIs on follow-up scans that were in close agreement to the original expert's ROIs. Finally, in a post-hoc analysis of 424 follow-up scans 91% of propagated MACC were accepted by an expert and only 9% of the final accepted ROIS had to be created or edited by the expert. CONCLUSION: When used with an expert operator's verification of automatically created ROIs, MACC can be used to improve inter- operator agreement and decrease analysis time, which should improve data collected and analyzed in multicenter clinical trials.

Lipid profiles are associated with lesion formation over 24 months in interferon-ß treated patients following the first demyelinating event.

OBJECTIVES: To investigate the associations of serum lipid profile with disease progression in high-risk clinically isolated syndromes (CIS) after the first demyelinating event. METHODS: High density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol (LDL-C) and total cholesterol (TC) were obtained in pretreatment serum from 135 high risk patients with CIS (≥ 2 brain MRI lesions and ≥ 2 oligoclonal bands) enrolled in the Observational Study of Early Interferon ß-1a Treatment in High Risk Subjects after CIS study (SET study), which prospectively evaluated the effect of intramuscular interferon ß-1a treatment following the first demyelinating event. Thyroid stimulating hormone, free thyroxine, 25-hydroxy vitamin D3, active smoking status and body mass index were also obtained. Clinical and MRI assessments were obtained within 4 months of the initial demyelinating event and at 6, 12 and 24 months. RESULTS: The time to first relapse and number of relapses were not associated with any of the lipid profile variables. Higher LDL-C (p=0.006) and TC (p=0.001) levels were associated with increased cumulative number of new T2 lesions over 2 years. Higher free thyroxine levels were associated with lower cumulative number of contrast-enhancing lesions (p=0.008). Higher TC was associated as a trend with lower baseline whole brain volume (p=0.020). Higher high density lipoprotein was associated with higher deseasonalised 1,25-dihydroxy vitamin D3 (p=0.003) levels and a trend was found for deseasonalised 25-hydroxy vitamin D3 (p=0.014). CONCLUSIONS: In early multiple sclerosis, lipid profile variables particularly LDL-C and TC levels are associated with inflammatory MRI activity measures.

Environmental factors associated with disease progression after the first demyelinating event: results from the multi-center SET study.

OBJECTIVES: To investigate the associations of environmental MS risk factors with clinical and MRI measures of progression in high-risk clinically isolated syndromes (CIS) after the first demyelinating event. METHODS: We analyzed 211 CIS patients (age: 28.9±7.8 years) enrolled in the SET study, a multi-center study of high-risk CIS patients. Pre-treatment samples were analyzed for IgG antibodies against cytomegalovirus (anti-CMV), Epstein Barr virus (EBV) early nuclear antigen-1 (EBNA-1), viral capsid antigen (VCA), early antigen-diffuse (EA-D), 25 hydroxy-vitamin D3 and cotinine levels and HLA DRB1*1501 status. The inclusion criteria required evaluation within 4 months of the initial demyelinating event, 2 or more brain MRI lesions and the presence of two or more oligoclonal bands in cerebrospinal fluid. All patients were treated with interferon-beta. Clinical and MRI assessments were obtained at baseline, 6, 12, and 24 months. RESULTS: The time to first relapse decreased and the number of relapses increased with anti-CMV IgG positivity. Smoking was associated with increased number and volume of contrast-enhancing lesions (CEL) during the 2-year period. The cumulative number of CEL and T2 lesions during the 2-year period was greater for individuals in the highest quartile of anti-EBV VCA IgG antibodies. The percent loss of brain volume was increased for those in the highest quartile of with anti-EBV VCA IgG antibodies. CONCLUSIONS: Relapses in CIS patients were associated with CMV positivity whereas anti-EBV VCA positivity was associated with progression on MRI measures, including accumulation of CEL and T2 lesions and development of brain atrophy.

MRI characteristics of familial and sporadic multiple sclerosis patients.

PURPOSE: To investigate the MRI characteristics in a large cohort of multiple sclerosis (MS) patients with and without a family history of MS. METHODS: Enrolled in this prospective study were 758 consecutive MS patients (mean age 46.2 ± 10.1 years, disease duration 13.6 ± 9.2 years and EDSS 3.4 ± 2.1), of whom 477 had relapsing-remitting, 222 secondary-progressive, and 30 primary-progressive disease courses and 29 had clinically isolated syndrome. One hundred and ninety-six patients (25.9%) had a positive family history of MS. Patients were assessed using measurements of lesions, brain atrophy, magnetization transfer ratio (MTR) and diffusion-weighted imaging. RESULTS: The familial MS group had greater T1-lesion volume (p=0.009) and a trend for lower MTR of T1-lesion volume (p=0.047) than the sporadic MS group. No clinical differences were found between familial versus sporadic group, or by a degree of affected relative subgroups. CONCLUSIONS: While familial MS was associated with more severe T1-lesion volume and its MTR characteristics, there were no clinical status differences between familial and sporadic MS patients. Therefore, a better understanding of the genetic and/or epigenetic influences causing these differences can advance the understanding and management of MS.

Anti-phospholipid antibodies are associated with response to interferon-beta1a treatment in MS: results from a 3-year longitudinal study.

OBJECTIVES: To prospectively investigate the associations of baseline serum anti-phospholipid antibody (APLA) status on evolution of clinical and MRI measures in a multiple sclerosis (MS) patient cohort treated with interferon-beta (IFN-beta). METHODS: Forty-seven relapsing-remitting (RR) MS patients, [26 APLA-positive (APLA(+)) and 21 APLA-negative (APLA(-))] matched for age, sex, disease duration, MRI characteristics, disability, and time on IFN-beta treatment, were enrolled. All patients were on intramuscular (IM) IFN-beta1a for at least 3 years and remained on the same treatment over the 3-year duration of the study. RESULTS: The APLA(+) group accumulated significantly higher T2-LV over the 3-year follow-up than the APLA(-) group (+31% versus -1·1%, P = 0·043). The MTR of T1-LV (-3·3% versus +4·7%, P = 0·04) in the APLA(+) group was lower compared to the APLA(-) group. At 3-year follow-up, the APLA(+) group had increased tissue damage as measured by diffusion entropy (+4% versus -2·5%, P = 0·019) and whole brain volume loss (-0·69% versus -0·37%, P = 0·041), compared to the APLA(-) group. There were more clinical relapses in the MS APLA(+) group compared to APLA(-) patients (18 versus 10) and a higher frequency of sustained disability progression (7/26 or 27% versus 2/21 or 9·5%). CONCLUSIONS: This study suggests that APLA(+) RRMS patients treated with IFN-beta1a develop more severe MRI and clinical deterioration. Future studies are required to evaluate the role of APLA as potential biomarkers for disease prognosis versus predictors for therapeutic response to IFN-beta therapy.

Comparison of standard 1.5 T vs. 3 T optimized protocols in patients treated with glatiramer acetate. A serial MRI pilot study.

This study explored the effect of glatiramer acetate (GA, 20 mg) on lesion activity using the 1.5 T standard MRI protocol (single dose gadolinium [Gd] and 5-min delay) or optimized 3 T protocol (triple dose of Gd, 20-min delay and application of an off-resonance saturated magnetization transfer pulse). A 15-month, phase IV, open-label, single-blinded, prospective, observational study included 12 patients with relapsing-remitting multiple sclerosis who underwent serial MRI scans (Days -45, -20, 0; the minus ign indicates the number of days before GA treatment; and on Days 30, 60, 90, 120, 150, 180, 270 and 360 during GA treatment) on 1.5 T and 3 T protocols. Cumulative number and volume of Gd enhancing (Gd-E) and T2 lesions were calculated. At Days -45 and 0, there were higher number (p < 0.01) and volume (p < 0.05) of Gd-E lesions on 3 T optimized compared to 1.5 T standard protocol. However, at 180 and 360 days of the study, no significant differences in total and cumulative number of new Gd-E and T 2 lesions were found between the two protocols. Compared to pre-treatment period, at Days 180 and 360 a significantly greater decrease in the cumulative number of Gd-E lesions (p = 0.03 and 0.021, respectively) was found using the 3 T vs. the 1.5 T protocol (p = NS for both time points). This MRI mechanistic study suggests that GA may exert a greater effect on decreasing lesion activity as measured on 3 T optimized compared to 1.5 T standard protocol.

Improved assessment of multiple sclerosis lesion segmentation agreement via detection and outline error estimates.

BACKGROUND: Presented is the method "Detection and Outline Error Estimates" (DOEE) for assessing rater agreement in the delineation of multiple sclerosis (MS) lesions. The DOEE method divides operator or rater assessment into two parts: 1) Detection Error (DE) -- rater agreement in detecting the same regions to mark, and 2) Outline Error (OE) -- agreement of the raters in outlining of the same lesion. METHODS: DE, OE and Similarity Index (SI) values were calculated for two raters tested on a set of 17 fluid-attenuated inversion-recovery (FLAIR) images of patients with MS. DE, OE, and SI values were tested for dependence with mean total area (MTA) of the raters' Region of Interests (ROIs). RESULTS: When correlated with MTA, neither DE (ρ = .056, p=.83) nor the ratio of OE to MTA (ρ = .23, p=.37), referred to as Outline Error Rate (OER), exhibited significant correlation. In contrast, SI is found to be strongly correlated with MTA (ρ = .75, p < .001). Furthermore, DE and OER values can be used to model the variation in SI with MTA. CONCLUSIONS: The DE and OER indices are proposed as a better method than SI for comparing rater agreement of ROIs, which also provide specific information for raters to improve their agreement.