[Variant radiation anatomy of the lacrimal sac at visualization by contrast-free computed tomography].

OBJECTIVE: to morphometrically estimate normal variations in the sizes of lacrimal sacs on the basis of computed tomography findings to optimize the choice of endoscopic surgical intervention tactics for dacryocystitis. MATERIAL AND METHODS: Preoperative orbital computed tomography data were comparatively morphometrically processed in two groups of patients with or without clinically verified dacryo- cystitis. RESULTS: Data on the typical variants of the sizes of the lacrimal sac in health and in clinically manifested dacryocystitis were obtained and statistically processed. The advantages of using the design volume of the lacrimal sac over other measurements were shown. A method for the morphometry of lacrimal sacs was proposed on the strength of computed tomography data. CONCLUSION: The obtained new refined data on the holotopy of the lacrimal sac in health and clinically verified dacryocystitis can simplify the choice of an approach to planning endonasal dacryocystorhinostomy.

[Magnetic resonance tomography of temporomandibular joint]. / Magnitno-rezonansnaia tomografiia visochno-nizhnecheliustnogo sustava.

The paper shows the place of magnetic resonance imaging among other radiation diagnostic techniques in detecting abnormal changes in the temporomandibular joint. The authors' own data were based on the results of 315 examinations. The paper describes the technical features of examination of the joint and shows it possible to visualize different anatomic structures on T1-, T2- and Pd-weighted images. It also indicates the diagnostic potentialities of magnetic resonance imaging in identifying abnormal changes in the joint in its diseases and lesions. This has allowed the authors to show what is indicated for magnetic resonance imaging of the temporomandibular joint and that it is necessary to develop an algorithm of radiation diagnosis for patients with different clinical forms of joint diseases.

[Technique of X-ray computed arthro-tomography in the diagnosis of internal disorders of the temporomandibular joint]. / Metodika rentgenovskoi komp'iuternoi artrotomografii v diagnostike vnutrennikh narushenii visochno-nizhnecheliustnogo sustava.

141 patients suffering by internal derangements temporomandibular joint are surveyed with the help x-ray computed arthrotomography. The opportunity of reception of precise intra-articular elements after introduction of contrast substance allows treat results of researches with high reliability. X-ray's data received with the help CT are investigated and systematized. The features of x-ray's picture TMJ, capable to affect tactics of spent treatment, are revealed.