Investigating the Effects of Level-Specific CE-Chirp on Auditory Brainstem Response Waves in Normal Hearing Infants.

Background: Auditory brainstem response (ABR) to the level-specific (LS) CE-Chirp has been reported to provide optimum neural synchrony along cochlear partitions, theoretically improving ABR waveform resolution. Despite this promising finding, limited studies have been conducted to contrast the results between LS CE-Chirp and Click stimuli. The current study aimed to compare the results of ABR between the two stimuli (Click and LS CE-Chirp).

[Oculopalpebral and facial synkinesis associated with ptosis: epidemiological, clinical, and therapeutic features].

Synkinetic movements of the upper eyelids may be noted in association with movements of either extraocular muscles or other muscles of the face. Patients with oculopalpebral or facial-palpebral synkinesis may also have ptosis of the involved eyelid. The clinical and therapeutic features of this association are specific.

[Ocular ochronosis. A case report].

Ochronosis or alkaptonuria is a rare inherited disease. It is characterized by the deposition of dark pigments in collagen-rich tissues, which leads to clinical manifestations such as arthropathy. The ochronotic pigment can be found in the sclera, the conjunctiva, and the limbic cornea.

[Quality control--patient doses--guidance dose levels from diagnostic radiology in Tunisia].

Background: Radiation doses from diagnostic radiology are the most important exposure collective doses of the man. Entrance Surface Dose is one of the basic dosimetric quantities for measuring the patient dose and hence, an excellent tool for optimization purposes and for comparison with the international reference values.

Aim: The aim of the study was to assess the delivred quantitis of rayon x to patients who undervent radiography;

Methods: For the first time in Tunisia the doses delivered to the patient undergoing the most common type of X ray examinations (chest, abdomen, lumbar spin) were performed in two university hospitals of Tunis.

[Radon in Tunisian buildings].

Radon is a natural radioactive gas produced by decay of uranium and radium present in soils. Diluted in air, in confined atmospheres, it may accumulate in high concentrations. Inhalation of radon and its progeny is thought to increase lung cancer risk.