Biomedical subjects

L Stöppler

Publications and source records attributed to L Stöppler.

6 recordsLinked to original sources

PubMed1979

[Noncontact detection of intraocular lesions by means of a gamma scintillation camera].

A gamma scintillation camera is used for noncontact detection of intraocular mass lesions. A double aperture pinhole collimator was designed for this special application. The collimator projects a magnified image of the radioactivity present in each eye onto the detector crystal of the camera. Details of the collimator design are described. The image-making properties of a double aperture pinhole collimator for ocular scintigraphy in regard to resolution and response were studied and demonstrated by phantom experiments. So far we have studied 50 cases with this new nuclear medicine procedure, using mainly technetium-pertechnetate as the radioindicator. Case histories and records of some typical results are presented. Better designed radiopharmaceuticals with appropriate tumor-seeking properties should be developed. Labeled melanin precursors are promising for detection of these lesions.

Breast Neoplasms↗

PubMed1979

[The value of cranial computed tomography in posterior fossa epidermoids and dermoids (author's transl)].

Report on posterior fossa epidermoids and dermoids (3 in the cerebellopontine angle, 1 in the region of the fourth ventricle). Computed tomographic aspects are related with other neuroradiological findings. Differential diagnosis of these mass lesions is discussed in detail, especially of low density and (rarely occuring) high density epidermoids.

Adult↗

PubMed1978

[Interobserver variability in CT reporting. A comparative evaluation (author's transl)].

Within a test of interobserver variability 88 CCT images were described by four physicians. In spite of a standardized documentation method, first results demonstrate that continuous quality control is necessary if the data is gathered into CCT data bases. The evaluation of uncontrolled data seems to be limited.

Brain↗

PubMed1978

[Fibrous dysplasia of the skull--a radiological, computer tomographic and scintigraphic study (author's transl)].

The diagnosis of fibrous dysplasia (Jaffé-Lichtenstein) of the skull can generally be made by plain films, occasionally supplemented by tomography. The differential diagnosis from sclerosing meningiomas in the anterior fossa can usually be made by cranial computer tomography. Cerebral scintigraphy does not play an important part in the differentiation from a meningioma. Total body scintigraphy, on the other hand, is useful, particularly in distinguishing between monostotic and polyostotic bone conditions. Invasive neurological methods, such as cerebral angiography, are in our opinion unnecessary unless there are definite clinical focal cerebral symptoms in the presence of a normal computer tomogram.

Diagnosis, Differential↗

PubMed1978

[Cerebral and spinal angiography with metrizamide (amipaque) (author's transl)].

Metrizamide (Amipaque) has been used as the contrast medium for angiography in neuroradiological investigations. Solutions containing 280 mgI/ml. are well tolerated and produce good contrast. The most important difference from previously used contrast media is the lack of pain when injections are made selectively or super-selectively into the external carotid artery and its branches, or into the spinal arteries.

Adolescent↗

PubMed1977

[Axial computer tomography of the neurocranium (author's transl)].

Computer tomography (CT), a new radiographic examination technique, is very highly efficient, for it has high informative content with little stress for the patient. In contrast to the conventional X-ray technology, CT succeeds, by direct presentation of the structure of the soft parts, in obtaining information which comes close to that of macroscopic neuropathology. The capacity and limitations of the method at the present stage of development are reported. Computer tomography cannot displace conventional neuroradiological methods of investigation, although it is rightly presented as a screening method and helps towards selective use. Indications, technical integration and handling of CT are prerequisites for the exhaustive benefit of the excellent new technique.

Brain Diseases↗