Atom-optics hologram in the time domain

The temporal evolution of an atomic wave packet interacting with object and reference electromagnetic waves is investigated beyond the weak perturbation of the initial state. It is shown that the diffraction of an ultracold atomic beam by the inhomogeneous laser field can be interpreted as if the beam passes through a three-dimensional hologram, whose thickness is proportional to the interaction time. It is found that the diffraction efficiency of such a hologram may reach 100% and is determined by the duration of laser pulses. On this basis a method for reconstruction of the object image with matter waves is offered.Comment: RevTeX, 13 pages, 8 figures; minor grammatical change

RESULTS OF TREATMENT OF GLIAL BRAIN TUMORS

Objective: To improve the treatment results of patients with brain glioma of varying degrees of malignancy by improving post-operative diagnostics and surgical tactics. Methods: A retrospective analysis of 843 patients was carried out. Examined indicators of overall survival according to the degree of malignancy of neoplasms and the use of modern surgical technologies. The prospective analysis included 118 patients with brain glioma located in the functionally significant brain zones. Specified patients in addition to the standard neuroimaging study, diffusion-tensor tractography, surgical interventions used neuronavigation, microsurgical and intraoperative neurophysiological monitoring techniques. Results: Among treated patients with brain gliomas, the 1-, 3-, 5-, and 10-years overall survival probability amounted accordingly 60.9%, 37.6%, 32.3%, and 22.7%, with median survival rates of 1.42 years, respectively. Implementation of both navigation and microsurgery technique during surgery significantly improved long-term outcomes, especially for high level malignant gliomas (p=0,005). When comparing the frequency of postoperative neurologic deficits in the main and control groups, revealed a statistically significant difference (p1 =0.049). Conclusion: The diagnostic algorithm optimization and improvement of the surgical approach contribute to improving the results of treatment in patients with brain gliomas

НЕЙРОВИЗУАЛИЗАЦИЯ ПРИ ПРОВЕДЕНИИ БОТУЛИНОТЕРАПИИ

We describe a clinical case of a piriformis syndrome in a patient with lumboischialgia. A technique of botulinum toxin therapy is described which was performed under neuroimaging control, i.e., with pelvic computerized tomography, that allowed for an accurate injection of the botulinum toxin into the deeply located muscle. Insufficient accuracy in determination of the injection site based on external reference points was shown.Приведено описание клинического случая – синдрома грушевидной мышцы у боль-ного с люмбоишиалгией. Описана техника проведения ботулинотерапии данномубольному под контролем нейровизуализации – рентгеновской компьютерной томо-графии области таза, что позволило точно осуществить инъекцию ботулотоксинав глубоко расположенную мышцу. Показана неточность определения места инъек-ции по наружным ориентирам