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For aligned visual-inertial headings the rate of common causation was higher during alignment in cardinal than non-cardinal directions. When visual and inertial stimuli were separated by 30° the rate of reported common causation remained >50%, but decreased below 15% for separation of ≥90°. The inertial heading was biased towards the visual heading by 11-20° for separations of 30-120°. Thus, there was sensory integration even in conditions without reported common causation. The visual heading was minimally influenced by inertial direction. When trials with common causation perception were compared to those without, inertial heading perception had a stronger bias towards visual stimulus direction.Purpose To demonstrate the reliability of conjunctival biopsy analyzed by direct immunofluorescence (DIF) and supplemented with avidin-biotin complex immunoperoxidase (ABC) in diagnosing oMMP, and report therapy response in biopsy-positive patients, particularly when previously biopsy-negative elsewhere.Methods Retrospective outcomes review of 136 consecutive patients after conjunctival biopsy for suspected oMMP.Results Among 136 patients, 66% were diagnosed with oMMP by DIF and 13% via supplemental ABC immunoperoxidase. Sensitivity increased from 79.6% with DIF to 95.6% with supplemental ABC. Among 57 biopsy-positive patients, 77% were in remission at 1-year follow-up and 88% after 2 years. Of 34 previous biopsy-negative but now biopsy-positive patients with a 2-year follow-up, 91% achieved remission, including all 16 diagnosed via DIF and ABC.Conclusion Conjunctival biopsy analyzed by histopathology and DIF supplemented by ABC has high reliability for diagnosing oMMP and is a useful tool to use before starting long-term immunomodulatory therapy in a patient with suspected oMMP.OBJECTIVE. In this article, we discuss the evolving roles of imaging modalities in patients presenting with biochemical recurrence after prostatectomy. CONCLUSION. Multiple imaging modalities are currently available to evaluate patients with prostate cancer presenting with biochemical recurrence after prostatectomy. Multiparametric MRI (mpMRI) focuses on the postsurgical bed as well as regional lymph nodes and bones. PET/CT studies using 18F-fluciclovine, 11C-choline, and prostate-specific membrane antigen (PSMA) ligands are useful in detecting locoregional and distant metastasis. Multiparametric MRI is preferred for patients with low risk of metastasis for localizing recurrence in prostate bed as well as pelvic lymph node and bone recurrence. Moreover, mpMRI aids in guiding biopsy and additional salvage treatments. For patients with high risk of metastatic disease, both mpMRI and whole-body PET/CT may be performed. PET/MRI using 68Ga-PSMA has potential to enable one-stop shop for local recurrence and metastatic disease evaluation, and clinical trials of PET/MRI are ongoing.OBJECTIVE. The objective of our study was to determine the performance of 3-T multiparametric MRI (mpMRI) for prostate cancer (PCa) detection and localization, stratified by anatomic zone and level, using Prostate Imaging Reporting and Data System version 2 (PI-RADSv2) and whole-mount histopathology (WMHP) as reference. MATERIALS AND METHODS. Poly-D-lysine Multiparametric MRI examinations of 415 consecutive men were compared with thin-section WMHP results. A genitourinary radiologist and pathologist collectively determined concordance. Two radiologists assigned PI-RADSv2 scores and sector location to all detected foci by consensus. Tumor detection rates were calculated for clinical and pathologic (tumor location and zone) variables. Both rigid and adjusted sector-matching models were used to account for fixation-related issues. RESULTS. Of 863 PCa foci in 16,185 prostate sectors, the detection of overall and index PCa lesions in the midgland, base, and apex was 54.9% and 83.1%, 42.1% and 64.0% (p = 0.04, p = 0.02), and 41.9% and 71.4% (p = 0.001, p = 0.006), respectively. Tumor localization sensitivity was highest in the midgland compared with the base and apex using an adjusted match compared with a rigid match (index lesions, 71.3% vs 43.7%; all lesions, 70.8% vs 36.0%) and was greater in the peripheral zone (PZ) than in the transition zone (TZ). Three-Tesla mpMRI had similarly high specificity (range, 93.8-98.3%) for overall and index tumor localization when using both rigid and adjusted sector-matching approaches. CONCLUSION. For 3-T mpMRI, the highest sensitivity (83.1%) for detection of index PCa lesions was in the midgland, with 98.3% specificity. Multiparametric MRI performance for sectoral localization of PCa within the prostate was moderate and was best for index lesions in the PZ using an adjusted model.OBJECTIVE. This article shares the ground operational perspective of how a tertiary hospital radiology department in Singapore is responding to the coronavirus disease (COVID-19) epidemic. This same department was also deeply impacted by the severe acute respiratory syndrome (SARS) outbreak in 2003. CONCLUSION. Though similar to SARS, the COVID-19 outbreak has several differences. We share how lessons from 2003 are applied and modified in our ongoing operational response to this evolving novel pathogen.OBJECTIVE. The aim of this study was to evaluate the amount of free radioactivity in renal and intestinal excretions during the first 48 hours after transarterial radioembolization (TARE) procedures on the liver. SUBJECTS AND METHODS. Urinary, intestinal, and biliary excretions of patients who underwent TARE with three different types of microspheres were collected during a postinterventional period of 48 hours (divided into two 24-hour intervals). Radioactivity measurements were performed. The detected amounts of activity were correlated to clinical and procedural characteristics, times of excretion, and microsphere types. RESULTS. Twenty-four patients were evaluated, 10 treated with 90Y-glass, 10 with 90Y-resin, and four with 166Ho-poly-L-lactic acid (PLLA) microspheres. Activity excretion occurred in all cases. The highest total excretion proportions of the injected activities were 0.011% for 90Y-glass, 0.119% for 90Y-resin, and 0.005% for 166Ho-PLLA microspheres. Intestinal excretion was markedly less than renal excretion (p less then 0.
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