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4 mSv (thorax) per fraction for a risk estimate of 0.004% (brain), 0.01% (H&N), 0.1% (pelvis), and 0.2% (thorax). Calculated ESD were compatible with existing data. CONCLUSIONS Dose calculation models for CyberKnife IGRT kV beams were implemented in a clinical treatment planning system and validated in water and heterogeneous phantoms. We determined the effective dose and the related risk estimate resulting from CyberKnife IGRT protocols for brain, head and neck, thorax, and pelvis cases. The effective doses calculated for CyberKnife IGRT protocols were similar to those obtained for cone beam CT protocols on conventional C-arm linear accelerators, except for extreme irradiation conditions for thorax cases (140 kV X-ray tube tension). © 2020 American Association of Physicists in Medicine.OBJECTIVES The aim of this study was to detect visual field defects (VFD) after occipital infarction, investigate the rate of recovery and the impact of VFD upon vision related quality of life (QoL). MATERIALS & METHODS Multicenter, prospective study including patients with MRI verified acute occipital infarction (NOR-OCCIP project). Ophthalmological examination including perimetry was performed within two weeks and after six months. Vision related QoL was assessed by the National Eye Institute Visual Function Questionnaire 25 (VFQ-25) at one and six months post stroke. RESULTS We included 76 patients, reliable perimetry results were obtained in 66 patients (87%) at a median of eight days after admittance and VFD were found in 52 cases (79%). Evaluation of VFD after six months revealed improvement in 52%. Patients with VFD had significantly lower composite score in VFQ-25 at both test points (77 vs. 96, p=0.001 and 87 vs. 97, p=0.009), in nine out of eleven subscales of VFQ-25 at 1 month and seven subscales after 6 months, including mental health, dependency, near and distance activities. Milder VFD had better results on VFQ-25 modified composite score (95 vs. 74, p=0.002).VFD improvement was related to improved VFQ-25 modified composite score (9.6 vs. 0.8, p=0.018). 10% of patients with VFD reported driving one month post stroke and 38% after six months. CONCLUSION VFD substantially reduces multiple aspects of vision related QoL. Severity of VFD is related to QoL and VFD improvement results in better QoL. Neglecting visual impairment after stroke may result in deterioration of rehabilitation efforts. Driving post stroke deserves particular attention. This article is protected by copyright. All rights reserved.CONTEXT Having succeeded in being selected for medical school, medical students are not always familiar with failure and yet they are expected to graduate prepared to effectively function in the failure burdened arena of clinical medicine. Lacking in the developing literature on learners and failure is an exploration of how this transformation is accomplished. The purpose of this study was to examine how medical students perceive and experience failure during their medical school training. METHOD We used a qualitative description methodology to probe the failure experiences of medical students attending a Canadian medical school. Participants were provided with the broad definition of failure used in this research "deviation from expected and desired results". Twelve students were sampled, three from each of the four years of study, and participated in individual, semi-structured interviews that were analyzed using thematic analysis to identify and describe core themes. RESULTS At the start of medical school,g failures that occur on their watch. This article is protected by copyright. All rights reserved.Hidradenitis suppurativa (HS) is a chronic skin disease with point prevalence between 1% and 4%, characterized by recurrent inflammation and painful formation of nodules in the intertriginous areas of the skin. In some patients, these lesions progress into the formation of abscesses and/or tunnels, ultimately causing restrictive scaring, and health-related quality of life impairment. click here Growing evidence suggests that the primary event is infundibular hyperkeratosis at the terminal follicles causing follicle dilatation and perifollicular inflammation followed by cyst formation.1 However, the exact aetiology of HS is still unknown, but likely multifactorial with involvement of genetic and immunological factors. This article is protected by copyright. All rights reserved.New World cutaneous leishmaniasis (CL) is endemic in many countries of Latin America, including French Guiana 1 . While pentamidine is the first-line treatment against Leishmania guyanensis in this territory 2 , pentavalent antimonials such as meglumine antimoniate (MA) are recommended in case of L. braziliensis or pentamidine-resistant strains of other species 2 . Liposomal amphotericin B (L-AmB) (Ambisome ®) is widely used against fungi and visceral leishmaniasis 3 . However, data concerning its efficacy in New World CL are scarce and contradictory 4-7 . Due to a shortage in MA, the Cayenne Hospital started using L-AmB as an alternative in 2015. We conducted a retrospective study to compare efficacy and safety of L-AmB and MA in patients treated for CL. This article is protected by copyright. All rights reserved.OBJECTIVES Deep brain stimulation (DBS) of the anterior thalamic nucleus (ANT) may be used against refractory focal epilepsy, but only two randomized double-blinded trials have been performed. The Oslo study was discontinued prematurely since reduction in seizure frequency was less than expected. The aim of the present study was to review the targeting used in the Oslo study and to identify the actual positions of the contacts used for stimulation. MATERIAL AND METHODS BrainLab MRI data were available from 12 Oslo study patients. Based on MRI the coordinates of the center of the ANT were identified. The coordinates were considered as the visually identified preferred target and were compared with the target originally used for ANT electrode implantation and with the actual electrode positions estimated from post-operative CT scans. RESULTS We found considerable differences between the visually identified preferred target, the originally planned target, and the actual electrode position. The total distance between the active electrode position and the visually identified preferred target was on average 3.
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