We report on typing behaviour and performance of 168,000 volunteers in an online study. The large dataset allows detailed statistical analyses of keystroking patterns, linking them to typing performance. Besides reporting distributions and confirming some earlier findings, we report two new findings. First, letter pairs typed by different hands or fingers are more predictive of typing speed than, for example, letter repetitions. Second, rollover-typing, wherein the next key is pressed before the previous one is released, is surprisingly prevalent. Notwithstanding considerable variation in typing patterns, unsupervised clustering using normalised inter-key intervals reveals that most users can be divided into eight groups of typists that differ in performance, accuracy, hand and finger usage, and rollover. The code and dataset are released for scientific use.

Background & Objectives: Estimation of the length of gestation is of paramount importance to obstetricians. The fetal cerebellum grows progressively along gestational period and transverse cerebellar diameter can be used as a new biometric parameter to assess the gestational age of fetus. This study was done to evaluate the accuracy transverse cerebellar diameter against other regularly measured parameters like biparietal diameter, head circumference, abdominal circumference and femur length in pregnant women between 15 to 40 weeks of gestation.Materials & Methods: In this study of 60 pregnant women between 15-40 weeks of gestation, all the parameters like biparietal diameter, head circumference, abdominal circumference, femur length and transverse cerebellar diameter were measured with ultrasonography. The measured values were then correlated with gestational age using regression coefficient.Results: Gestational age estimated by transverse cerebellar diameter (R2 = 0.989; p < 0.001) had good predictive value which was comparable to gestational age estimated by biparietal diameter (R2 =0.929; P < 0.01), head circumference (R2 =0.964; P < 0.01), abdominal circumference (R2 =0.931; P < 0.01) and fetal length (R2 = 0.966; P < 0.01). Conclusion: Transverse cerebellar diameter has a good predictive accuracy for gestational age estimation which is comparableto other routinely used parameters and can be used as an alternative parameter to predict the gestational age.

Introduction A knowledge of renal artery dimension is necessary for characterizing the physiological change as well as pathological process undergoing in the renal artery likely stenosis, ectasia, or aneurysm. This study aims to explore the anatomy of the renal artery with regards to its dimension, relation, and branching and identify the common anatomical variation. Materials and Methods The study was a retrospective hospital record-based study conducted during the period of one year from 2019 January to 2019 December. All abdominal CT angiograms were reviewed for renal artery anatomy and variation. Abnormal Abdominal CT angiograms were excluded from the study. Normal anatomy, dimensions, and variation of renal vasculature were assessed. ResultsA total of 110 patients included the inclusion criteria and was included in the study. The renal length and size of the renal artery were significantly larger on the left side. The renal artery diameter showed positive correlation with renal length (r= 0.432; p<0.001). No variation of the renal size of renal artery diameter was however noted with sex. Supernumerary arteries were seen in 33(30%) patients. The optimum cut-off value of renal artery diameter for predicting accessory renal artery was 5.35 or less which yielded a sensitivity of 75% and specificity of 70%. (AUC-0.79; p<0.001). When 4.15 mm was taken as cut-off, the specificity increased to 96% with a marked reduction in sensitivity to 3.6%. Conclusion Renal artery diameter is dependent on laterality, kidney size, and presence of accessory artery and independent of sex.

No abstract

Zinner Syndrome is a rare urogenital tract anomaly with unilateral renal agenesis, ipsilateral seminal vesicle cyst, and ipsilateral ejaculatory duct obstruction. The syndrome occurs due to an insult to the development of the paramesonephric duct during embryogenesis. Patients may present late due to dysejaculation as a result of obstruction of the ejaculatory duct or commonly remain asymptomatic. Here, we present such a case presenting with dysejaculation which was diagnosed with Zinner syndrome on ultrasound.