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Biomedical subjects

J Lang

Publications and source records attributed to J Lang.

At least 505 records · Page 28Linked to original sources
PubMed1978

[The posterior opening of the pterygopalatine fossa and the position of the pterygopalatine ganglion].

Our material consisted of 100 adult skulls and 50 adult half-head sections where the posterior opening of the pterygopalatinate fossa and the position of the pterygopalatinate ganglion were investigated. The report contains the following specifics: 1. Course and contents of the pterygoidal canal as well as the topographical relations of the canal to the sphenoid sinus. 2. Positioning of the axis of the foramen rotundum to the various planes of the head and its contents. 3. Course of the vomerovaginal canal and its contents. 4. Distances of the pterygopalatinate ganglion to important reference points of the head and to the median-sagittal line.

Ganglia↗
PubMed1978

[The central branches of the anterior and median cerebral artery].

1. In our examined subjects, the A. recurrens anterior was found to be more frequently doubled than as has been reported. 2. The number of central rami arising from the A. cerebri media varies between 3 and 13. 10% of these already divide extracerebrally so that the number of small asts actually present lies between 4 and 20. The count presented by Lazorthes appears to be based on the former method and by Jain on the latter. The ramifications arise from the main artery as well as from its insular branches. Arterial trunks are likewise often present that give off a large portion of the asts. When operating aneurysms of the A. cerebri media, these facts are of importance to the neurosurgeon who must sprare these vessels whenever possible. Should more of these branches or one of these arterial trunks be bound with a clip, serious neurological deficits will occur.

Cerebral Arteries↗
PubMed1978

[Normosensorial essential late convergent strabismus, a clinical entity (author's transl)].

A group of 50 patients is presented to discuss this clinical entity. Late onset of squint. Sometimes accompanied by diplopia, normal retinal correspondence, absence of serious sensorial and refractional defects are the characteristics. Differential diagnosis is discussed. Early operation together with prisms is the treatment of choice. A real cure can be achieved in these cases.

Adolescent↗
PubMed1978

[Scotoma in the binocular field of vision in severe amblyopia and microstrabismus (author's transl)].

Binocular perimetry with Aulhorn's Phase difference haploscope is described. Of 62 patients with primary micro-squint, 21 patients showed no scotoma, 15 patients showed a fixation or zero point scotoma of 0.5-1 degrees, 26 patients showed a larger scotoma (average: 3.7 degrees). In addition, 15 patients with larger angle and deep amblyopia were examined. The scotoma average was 8.8 degrees. A zero point scotoma was always present, whereas the central foveal scotoma was often missing.

Adolescent↗
PubMed1977

[Binocular triplopia induced by weak prisms (author's transl)].

The prescription of weak prisms may induce monocular diplopia or binocular triplopia. The monocular double image is due to internal reflexion at the glass-air interface. The intensity of the secondary image is very weak (0.2% of the primary image). The prismatic deflection of the secondary image is six times the deflection of the primage image.

Diplopia↗
PubMed1977

Steroids: theoretical and experimental basis for utilization in prevention of contrast media reactions.

In vitro and in vivo studies were done to examine the effects of methylprednisolone on the adverse reactions induced by contrast media. At very high concentrations, the steroid potentiated the complement-activating effect produced in vitro by iodipamide, but inhibited the immune and nonimmune mechanisms of hemolysis. Rabbits pretreated for 3 days with intramuscular methylprednisolone (at high or low dosages) were significantly protected against an LD47 challenging dose of iodipamide. Those treated once with a low intravenous dose immediately prior to iodipamide challenge were protected to a lesser degree. Rabbits treated once with a very high intravenous dose of steroid evidenced no protection. A hyper-responsive dog was consistently protected against adverse reactions to injected sodium iothalamate by a 3-day steroid pretreatment.

Animals↗
PubMed1977

Structure and postnatal organization of heretofore uninvestigated and infrequent ossifications of the sella turcica region.

A heretofore unreported spine, which protrudes into the pituitary fossa, has been described and recorded. Complete and incomplete 'sella bridges', their angle formations with the planes of the head, dimensions and sutures have been detailed and their origin postulated. The development and formation of the carotico-clinoid foramina have been exhibited and interpreted. Development stages of the ophthalmic canals have been elicited. An ossified trigeminus bridge has been measured and its origin elucidated. The supracochlear cartilages have been traced from their appearance in the new-born to their supposed fate (os suprapetrosum).

Adult↗
PubMed1977

Action of ultrasonic irradiation on the DNA of cultivated bovine epithelial lens cell.

Cultivated epithelial lens cells have been submitted to a 20 kHz continuous ultrasonic irradiation. At relativity high intensity, destruction of the cells was observed. At lower intensities, where no cell destruction appeared, the molecular weight of the single strand DNA of these cells was monitored to determine whether breakage of DNA molecules was induced by the ultrasound. No breakage of the single strand DNA was observed for intensities below 0.1 and 0.4 W cm-2 with irradiation times of less than 20 minutes and 15 seconds, respectively. These intensities and their corresponding irradiation time are higher than those used in current diagnostic practice.

Animals↗
PubMed1977

[Form, size and variations of the plexus chorioideus ventriculi IV].

The form, size and variations of the Plexus chorioideus ventr. IV were investigated on 55 brain stem specimens. Because up until now there has been no definitive standard nomenclature, the plexus has been divided into a medial part (Pars medialis)--with its Processus fastigii, Processus inferior and Processus paramedianus--and into a lateral part (Pars lateralis). The plexus parts which stickout of the apertures are accordingly termed Partes aperturae lateralis et mediana. The greatest transverse expansion (= span of the plexus) varies between 27 and 52 mm. The greatest longitudinal values measured along the arc are between 10 and 40 mm. The variability of the Processus fastigii--if present--varies between 3 and 9 mm in length and has been schematically presented along with the position of the Processus paramedianus and the length of the Processus inferior. The size of the plexus-free middle area, its form and form-varitions, likewise has been studied and has been presented in schematic drawings and evidenced with photographs, along with those of the Apertura lateralis and the diverse lengths of the Pars aperturae mediana.

Brain Stem↗