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Li HY, Wang Y, Tong YP, Zhang MY, Ju Y, Xia Y. [Clinical characteristics of sudden sensorineural hearing loss with acute cerebral infarction]. Zhonghua Nei Ke Za Zhi 2023; 62:1121-1125. [PMID: 37495421 DOI: 10.3760/cma.j.cn112138-20230405-00184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
Objective: To analyze the clinical and imaging features of patients with sudden sensorineural deafness and acute cerebral infarction in order to provide evidence for early recognition of such diseases. Methods: This was a case series reporting study. A retrospective analysis was performed on the clinical and imaging data of 29 patients with sudden hearing loss (SHL) who admitted to the Otolaryngology Head and Neck Surgery Department of Beijing Tiantan Hospital from January 2017 to December 2021 and diagnosed with acute cerebral infarction using MRI-DWI. Results: The patients were aged 31-71 years, with an average age of 56±12 years, and 82.8% (24/29) were men. In total, 82.8% (24/29) of the patients had three or more atherosclerotic risk factors, and 24.1% (7/29) had a history of SHL. The hearing types were flat and total deafness: 86.2% (25/29) of the patients had severe hearing loss, 27.6% (8/29) had bilateral SHL, 17.2% (5/29) had further hearing loss during hospitalization, and 82.8% (24/29) had dizziness or vertigo at the onset. The signs of central nervous system involvement mainly included speech impairment, diplopia, dysphagia, central facial paralysis, facial and limb hypoesthesia, ataxia, and decreased muscle strength. Imaging evaluation showed that 21 cases were located in the posterior circulation supply area and 8 cases in the anterior circulation supply area. Additionally, 82.8% (24/29) patients had vertebrobasilar artery stenosis, and 58.6% (17/29) patients had severe vertebrobasilar artery stenosis or occlusion. Conclusions: Patients with SHL who progress to cerebral infarction often have multiple atherosclerotic risk factors and SHL. Most of the patients are middle-aged and older men who often complain of dizziness or dizziness accompanied by severe flat and total deafness with unilateral or bilateral SHL. Imaging findings suggest that most patients have posterior circulation infarction, often accompanied by severe stenosis or occlusion of the vertebrobasilar artery.
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Affiliation(s)
- H Y Li
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, China Clinical Center for Vertigo and Balance Disturbance, Capital Medical University, Beijing 100070,China
| | - Y Wang
- Clinical Center for Vertigo and Balance Disturbance, Capital Medical University, Beijing 100070,China Neurology Center, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, China
| | - Y P Tong
- Department of Traditional Chinese Medicine, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, China
| | - M Y Zhang
- Department of Radiology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, China
| | - Y Ju
- Clinical Center for Vertigo and Balance Disturbance, Capital Medical University, Beijing 100070,China Neurology Center, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, China
| | - Y Xia
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, China Clinical Center for Vertigo and Balance Disturbance, Capital Medical University, Beijing 100070,China
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Affiliation(s)
- A J Lin
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuangqing Road, Haidian, Beijing 100085, People's Republic of China
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Kung HC, Yau HF, Lee HY, Kukhtarev N, Chen TC, Sun CC, Chang CC, Tong YP. Double phase conjugation with orthogonally polarized beams in a BaTiO(3) crystal. Opt Lett 2000; 25:1031-1033. [PMID: 18064263 DOI: 10.1364/ol.25.001031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
We have demonstrated experimentally the simultaneous self-conjugation of extraordinarily and ordinarily polarized light waves (lambda=514 nm), with the polarization state preserved, in a Ce:BaTiO(3) crystal. Conjugate o waves originate from coupling between o and e waves by means of a circular photogalvanic effect. The conjugator also takes advantage of the Ce:BaTiO(3) crystal, for which it is easy to generate an extraordinary conjugate beam by photorefractive backscattering. This beam of light is necessary for double phase conjugation.
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Tong YP, Sutherland JM, French PM, Taylor JR, Shestakov AV, Chai BH. Self-starting Kerr-lens mode-locked femtosecond Cr(4+):YAG and picosecond Pr(3+):YLF solid-state lasers. Opt Lett 1996; 21:644-646. [PMID: 19876111 DOI: 10.1364/ol.21.000644] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We have observed true self-starting Kerr-lens mode locking in two distinct solid-state laser systems operating at room temperature by optimizing the cavity geometry to maximize the amplitude modulation with respect to the intracavity power variation. Pulses of 15 ps have been obtained from a Pr(3+):YLF laser system operating at 607 nm, and 53-fs pulses have been obtained from Cr(4+):YAG at 1.54 microm.
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Conlon PJ, Tong YP, French PM, Taylor JR, Shestakov AV. Passive mode locking and dispersion measurement of a sub-100-fs Cr(4+):YAG laser. Opt Lett 1994; 19:1468-1470. [PMID: 19855555 DOI: 10.1364/ol.19.001468] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We report the passive mode locking of a Cr(4+):YAG laser by use of a moving mirror and the generation of pulses as short as 70 fs by use of Kerr-lens mode locking. The intracavity dispersion has been measured, and the laser performance has been related to water absorption lines.
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Tong YP, Zhang YP, Xu YL, Rui JY, Li MQ, Shen CY, Xiao ZM, Hong JX. Determination of eight elements in six human cancer cell lines and two human normal cell lines by PIXE. Biol Trace Elem Res 1991; 29:31-4. [PMID: 1711359 DOI: 10.1007/bf03032671] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Gastric, hepatic, and pulmonary cancer cell lines, and the third passage of normal gastric and pulmonary cell lines were analyzed by proton induced X-ray emission (PIXE) method. The contents of element Sr, Ca, Fe, Zn, P, K, Cu, and As in the cell lines were determined. The Sr, Ca, Fe, Zn, and As contents in cancer cell lines were significantly lower than those in the normal cell lines (p less than 0.05), whereas there were no significant differences for the P, K, and Cu contents (p greater than 0.1). The results suggest that the need of some essential elements has been diminished in cancer cell proliferation.
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Affiliation(s)
- Y P Tong
- Shanghai Institute of Nuclear Research, Academia Sinica, PRC
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