ABSTRACT
To study and analyse the variations in ethmoid roof anatomy and estimate the anatomical location and variations of AEA on CT scans. The study is conducted on 200 patients for detailed analysis of the olfactory fossa (OF) depth, supraorbital pneumatisation, and AEA location and distance from the skull base. In our study, Keros type II was predominant type seen followed by type I. Asymmetry was noted in 32/200 subjects (16%). The anterior ethmoidal artery (AEA) canal was seen in 341/400 sides (85.2%). We found Keros type II was the most common type in our study. We also found grade I anterior ethmoidal artery as the most common variant and the dangerous grade III anterior ethmoidal artery was least common type found in this study, and there was a significant association of Keros type II with increasing anterior ethmoidal artery grading.
ABSTRACT
BACKGROUND: The corona virus disease (COVID-19) pandemic has caused widespread effect on the lives of health care professionals. The postgraduate medical students, who are the major pillars of medical institutions had to bear multitude of setbacks due to the pandemic involving academic, research and well-being issues. MATERIALS AND METHODS: This was a cross sectional feedback based online survey done in the month of October 2021 to study the effect of COVID-19 pandemic induced changes in the postgraduate medical education; amongst 78 students pursuing MD/MS degree in all departments of a tertiary medical institute in Himalayan foothills of North India. The questionnaire consisted of ten questions; each of which needed to be answered on a five point Likert scale ranging from strongly disagree to strongly agree. Results were assessed for the most common answers of each question (represented by mode) and association between various components of the questionnaire analyzed by Spearman's rho correlation coefficient. RESULTS: The internal consistency of the questionnaire as tested by Cronbach's Alpha (0.82) was good. Most number or respondents were from surgical branches (n = 31, 39.74%). There was a generalized agreement towards preference of resumption of onsite education (75.64%), the lack of variety of cases causing hampering of thesis work (88.46%) and increased mental stress during the pandemic (58.9%). While more time for self-study was seen as the only consensual positive aspect of online teaching (64%), most students opined that technical glitches are a major roadblock in online education (80.76%). Significant positive correlation was seen between disciplinary ease and punctuality in online teaching (R = 0.543, P < 0.001), lack of interaction and its effect on learning and mental health (R = 0.471; P < 0.001) and the lack of diversity in cases and difficulties in dissertation work (R = 0.351; P < 0.05). Negative correlation was observed between the satisfaction from overall learning through online teaching and the desire of resumption of offline classes (R = -0.491; P < 0.001). CONCLUSION: COVID-19 pandemic and its effects on medical education are long lasting. A comprehensive approach is required to rebuild the medical education curriculum, inculcating both traditional and newer virtual methods of education. A consistent support in academics and overall growth needs to be provided to medical postgraduate residents who have been the first line fighters in face of the massive disaster compromising their basic needs and education.
ABSTRACT
OBJECTIVE: To compare the contrast-enhanced fluid-attenuated inversion recovery (CE-FLAIR), the CE T1-weighted (CE-T1W) sequence with fat suppression (FS) and magnetization transfer (MT) for early detection and characterization of infectious meningitis. MATERIALS AND METHODS: Fifty patients and 10 control subjects were evaluated with the CE-FLAIR and the CE-T1W sequences with FS and MT. Qualitative assessment was done by two observers for presence and grading of abnormal leptomeningeal enhancement. Quantitative assessment included computation of net meningeal enhancement, using single pixel signal intensity software. A newly devised FLAIR based scoring system, based on certain imaging features including ventricular dilatation, ependymal enhancement, infarcts and subdural effusions was used to indicate the etiology. Data were analysed using the Student's t test, Cohen's Kappa coefficient, Pearson's correlation coefficient, the intraclass correlation coefficient, one way analysis of variance, and Fisher's exact test with Bonferroni correction as the post hoc test. RESULTS: The CE-FLAIR sequence demonstrated a better sensitivity (100%), diagnostic accuracy (95%), and a stronger correlation with the cerebrospinal fluid, total leukocyte count (r = 0.75), protein (r = 0.77), adenosine deaminase (r = 0.81) and blood glucose (r = -0.6) values compared to the CE-T1W sequences. Qualitative grades and quantitative meningeal enhancement on the CE-FLAIR sequence were also significantly greater than those on the other sequences. The FLAIR based scoring system yielded a diagnostic accuracy of 91.6% and a sensitivity of 96%. A strong inverse Pearson's correlation (r = -0.95) was found between the assigned score and patient's Glasgow Coma Scale at the time of admission. CONCLUSION: The CE-FLAIR sequence is better suited for evaluating infectious meningitis and could be included as a part of the routine MR imaging protocol.
Subject(s)
Magnetic Resonance Imaging/methods , Meningitis/diagnosis , Adenosine Deaminase/cerebrospinal fluid , Adolescent , Adult , Aged , Aged, 80 and over , Blood Glucose/analysis , Child , Child, Preschool , Contrast Media/chemistry , Female , Humans , Leukocyte Count , Male , Middle Aged , Sensitivity and Specificity , Young AdultABSTRACT
The term stromal tumor was coined in 1983 by Clark and Mazur for smooth muscle neoplasm of the gastrointestinal tract (GIT). Gastrointestinal stromal tumors (GIST) are nonepithelial tumors arising from the interstitial cells of Cajal, which express KIT protein-CD117 on immunohistochemistry. GIST can arise anywhere in the GIT, including the mesentery, omentum, and retroperitoneum.
