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At least 253 records · Page 14Linked to original sources
PubMed1990

[Roentgenologic heart volume determination for the diagnosis of fatal heart failure].

In order to investigate the connection between the cardiac volume and the cardiac shadow plane, 385 anterior-posterior radiographs of the thorax have been selected comparing their cardiac shadow plane with the corresponding cardiac volumes determined by the autopsy of the cadavers. The comparison showed a connection of both magnitudes by means of the formula Hvol = 0.49 x Fa x square root of Fa (Hvol = cardiac volume in cm3, Fa = cardiac shadow plane of the anterior-posterior radiograph in cm2, corrections were made from the radiation divergence). A verification of the formula showed a very high correlation (r = 0.984) in 25 cadavers to be dissected. The comparing volume of the cardiac shadow plane has been investigated by means of the water displacement method, in which the cardiac vessels were ligated and the heart taken out of the cadaver. The cardiac volume, evaluated from the cardiac shadow plane showed a significant correlation at the cardiac death by internal natural cause. The comparison of the mathematical evaluated cardiac blood volumes of the symptoms causing death showed that the cardiac blood volumes in the group of poisonings and the group of drowning, suffocations and hanging with 231 ml and 211 ml in the men collective were at the same level as the cardiac death (246 ml). About the same applied to the women collective.(ABSTRACT TRUNCATED AT 250 WORDS)

Cardiac Output↗
PubMed1987

Roentgenological investigation of cavernous sinus structure with special reference to paracavernous cranial nerves.

We have evaluated the anatomical structure of cavernous sinuses in parasellar blocks obtained from adult cadavers to gain clinically useful information. Ten microdissectional studies of parasellar blocks (20 sides of cavernous sinus) were carried out with special emphasis on the course of paracavernous cranial nerves (3rd to 6th). These were also examined on plain radiographs. Secondly, CT investigations of the cavernous sinuses (notably as to paracavernous cranial nerves) were undertaken in twenty clinical cases having presumed parasellar lesions and in three parasellar blocks from cadavers. The results from microdissectional studies and plain radiographs were as follows. It was found that the 3rd cranial nerve entered the lateral wall of the cavernous sinus close to the antero-inferior part of the posterior clinoid on lateral projection. The 4th cranial nerve, on the other hand, entered near the postero-inferior portion of the posterior clinoid on the same view. Variations in Parkinson's triangle were fairly often noted, although marked asymmetry was not seen in individual cases. From CT findings, it was found that a postenhanced, magnified direct coronal study was essential for identifying paracavernous cranial nerves more clearly. The 3rd and 5th cranial nerves were fairly well identified on axial and coronal projections. Careful radiological investigation including plain skull radiographs & CT seems to be of value for those who diagnose or treat parasellar lesions.

Abducens Nerve↗
PubMed1976

[Roentgenologic and morphologic studies of experimental tibial-plateau fractures (author's transl)].

Experimental tibial-plateau fractures had been produced to a series of 12 knee joints of corpses. The knee-joints had been exposed to vertical pressure in an extended position. The exerted pressure and the achieved deformation had been noted down in a diagram. The following radiological and morphological examination of the specimen showed that clear impressed fractured had arrived in case of a small deformation, whereas stronger compression had always caused combinated impression and split fractures. Impressions up to a depth of 3 to 5 mm cannot be proved radiologically. A certain unknown figure must be reckoned with in cases of distorsions of the knee-joint without a striking radiological finding. This will, however, hardly involve therapeutic consequences, because the carrying capacity of the tibial condyle will not be considerably reduced by such small impressions, and there is no fear of a further impression under load.

Biomechanical Phenomena↗
PubMed1976

Menière's disease - roentgenologic diagnosis.

Radiologic diagnosis in Menière's disease should not be based on the vestibular aqueducts tomographic reproducibility. Instead, valuable preoperative information should be given about the size and location of the aqueducts external aperture in relation to the posterior and lateral semicircular canals. In saccotomy the semicircular canals are landmarks for identification of the endolymphatic sac. The periaqueductal pneumatization is demonstrated to be partly decisive for the vestibular aqueducts gross morphology. In Menière's disease either a sparse or a total lack of periaqueductal pneumatization is observed in most of all cases. The development of peri- and infralabyrinthine pneumatization is also decisive for the position of the foveate impression, which houses the extraosseous part of the endolymphatic sac. Its location and size can be evaluated by tomographic characterization of the vestibular aqueducts external aperture.

Humans↗