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Biomedical subjects

S O Rodiek

Publications and source records attributed to S O Rodiek.

18 recordsLinked to original sources
PubMed1991

[Gliomatosis cerebri: the diagnostic potential of MRT].

Gliomatosis cerebri is a rare tumor of neuroepithelial origin in middle aged persons presented by deterioration of cognitive functions, psychomotor retardation and cerebral convulsions. MRI predominantly shows a bilateral and diffuse infiltration of midline adjacent brain structures including medulla. Areas with focal anaplasia occasionally reveal an accumulation of contrast media. The diffuse tumor manifestation requires a differentiation from encephalitis and demyelinating diseases with a similar distribution pattern of lesions. Three cases have been examined. In conclusion the performance of MRI including control and brain biopsy are indicated to establish an in vivo diagnosis.

Biopsy↗
PubMed1988

[MR tomography of nonspecific infectious spondylodiscitis].

In 14 cases of unspecific infectious spondylodiscitis 11 patients underwent MR tomography, 3 of them were followed up. At the acute stage of the disease characteristic MR patterns are revealed. The main symptoms are 1) transdiscal hypointensity of the affected segment in T1-weighted images without differentiation of disk and adjacent vertebral bodies as well as 2) the manifestation of a hyperintense signal of diseased disks, vertebral bodies and paravertebral inflammation on T2-weighted images. A signal void is produced by sclerotic reactions of spongiosa. The formation of intraspinal abscesses and the compression of the spinal cord are clearly outlined by MR. When therapy is successfully applied, signal alterations largely normalize.

Adult↗
PubMed1987

[MR and CT patterns of neurocysticercosis].

MRI and CT manifestations were studied in five cases of neurocysticercosis. As demonstrated by long-term follow-ups the disease usually causes multiple lesions the morphology of which depends on the life cycle of the parasite. Tissue lesions consist of three main types: 1) vital cysticerci, 2) inflammatory parenchymatous reactions following degenerating cysts and 3) calcified granulomas. MRI provides all information that is given by CT except for small calcifications which are usually missed. Morphological details of vital cysticerci like cyst wall and scolex are better outlined by MRI. When i.v. contrast medium is applied, it leads to nodular or annular enhancement of inflamed tissue. The sensitivity of MRI towards edema caused by parasite exceeds that of CT by several weeks. CT and MRI are complementary methods providing at the present time the highest degree of specificity in diagnosing neurocysticercosis.

Adult↗
PubMed1987

[Magnetic resonance tomography of non-tumorous lesions of the pons].

The paper gives details of the diagnostic value of MRI in 20 cases of non-tumorous lesions of the pons. MR findings in haematoma (3), vascular malformations (2), infarctions (6), encephalitis (1), demyelinations (6) and atrophies (2) resulted in signal changes typical of the kind of disease. A pontine volume increase or decrease was proved comparing the data of the normal and affected brain stem. The topography of lesions was clearly documented by MRI. Subacute haematomas were better outlined than by CT, while acute infarctions, foci of demyelination and one case of ponsencephalitis were proved only by MRI. Small calcifications and vessels of an arteriovenous malformation, however, caused the same MR signal patterns.

Adult↗
PubMed1987

[Assessment of the muscles of the extremities with imaging procedures (CT and MR)].

Modern imaging techniques like CT-scanning and Magnetic Resonance imaging are advantageous for macroscopic evaluation of muscles in the extremities. By correct positioning of the patient the muscles of the arms can be scanned without artefact. Our experience is based on 160 CT and 47 MR cases. While healthy muscles reveal regular morphology, atrophic muscles become reduced in size as well as demonstrating complex structural alterations. The distribution pattern, type, and degree of atrophy can be accurately documented by both techniques. Furthermore, MR can clearly detect edema, hematoma, and myositis of muscles. Hence CT and MR may prove useful tools for preoperative assessment as well as a postoperative follow-up.

Arm↗
PubMed1986

[MR-tomography and -spectroscopy of skeletal muscles using high magnetic field strengths].

Intact as well as neuromuscular affected skeletal muscles can be precisely analysed by MR tomography with high magnetic field strengths. The substitution of muscle by adipose tissue under atrophic conditions is seen most clearly in fat images, while the morphology of small structures is predominantly shown by water images. The aim of in-vivo spectroscopy is an identification and quantification of metabolites. A relative increase in the amount of adipose tissue within atrophic muscles was confirmed by the 1-H spectrum. As concluded from 13-C and 31-P spectra there was neither a change in adipose tissue composition nor a modification of energy metabolism.

Adenosine Triphosphate↗
PubMed1985

[Computed tomography of the skeletal muscles in neuromuscular diseases].

CT-documentation of skeletal muscular lesions caused by neuromuscular diseases implies an essential contribution to conventional techniques in the macroscopic field. Size, distribution and degree of lesions as well as compensatory mechanisms are proved thereby. We report about the different effects on muscle appearance referring to 106 patients of our own experience in amyotrophic lateral sclerosis, spinal muscular atrophy, poliomyelitis, polyradiculitis, polyneuropathy as well as peripheral traumatic nerve lesions.

Accessory Nerve Injuries↗
PubMed1985

[Technic for computed tomographic study of skeletal muscles in neuromuscular diseases].

Computed tomography provides a complete view of morphological alterations in skeletal muscle caused by neuromuscular diseases. A good image quality of the lower as well as of the upper limbs is obtained by choosing a small scanning-field and an appropriate scanning-position. The arms are best examined one by one. In follow-up studies muscular atrophy can be documented by planimetric and densimetric measurements. Furthermore CT-scanning is a convenient method for selecting suitable muscles for muscle biopsy.

Adult↗
PubMed1985

[NMR tomography of the skeletal muscles in neuromuscular diseases].

MR tomography is a useful procedure for assessing changes in size and structure of skeletal muscles in three dimensions. It provides excellent soft tissue contrast resolution, but spatial resolution requires to be improved. Myatrophic alterations can be shown best by using short echo delay times (TE) and short repetition times (TR). Muscles with fatty degeneration reveal a change in signal intensity and in relaxation times. These reproducible MR findings indicate appropriate areas of EMG diagnosis and biopsy and provide objective follow-ups.

Adult↗
PubMed1984

[Computed tomographic classification of gunshot wounds of the head].

Twenty-four patients following head bullet injuries were analyzed by CT. The major part, concerning 10 patients, refers to acute perforating lesions. Five cases showed penetrating injuries, 3 cases bolt injuries, the other ones lesions of the facial skull and residues of former bullet injuries. Because of a tempory cavitation the bullet track is wider than the bullet itself. The position of the skull fragments gives a hint to the shot direction. A reconstruction of intracranial bullet movements and spontaneous bullet dislocations is made possible by CT. It further shows secondary posttraumatic lesions.

Adolescent↗
PubMed1984

[Herpes simplex encephalitis on the computed tomogram].

Referring to 9 patients of our own material we report on the pattern of distribution and the development of CT-changes in Herpes simplex encephalitis (HSE). Our cases include the outstanding findings of a primarily hemorrhagic HSE and an extensive calcification at the residual stage on the borderline of widespread tissue necrosis on a baby. With respect to literature we receive a quite homogeneous picture, reflecting the crucial characteristics of the disease as known from neuropathology.

Adult↗
PubMed1983

[Computed tomographic studies in cervical spinal stenosis].

Computed tomography was applied in 29 patients with cervical spinal stenosis. In 8 cases there was a congenital narrowed spinal canal. In 18 cases we found dorsal spondylotic ridges of the vertebral bodies and in three cases an atlanto-dental dislocation. The complaints showed either radicular character or in case of myelopathy came out as para- and quadriplegia. In 25 cases the spinal sagittal diameter was a lot below a critical borderline of about 13 mm. The kind and localisation of the underlying process can be demonstrated very excellent by computed tomography.

Adult↗
PubMed1983

[Demonstration of cerebral complications in internal diseases and in drug therapy by computerized tomography].

If the central nervous system is affected in internal diseases or during drug therapy accompanied by lesions within the cerebral tissue, there will be normally found changes in cranial computed tomography. 14% of our cranial scans have been done of patients from internal wards. Among these patients 10 cases have been elected to review the typical findings. In particular neurological complications are described in cardio-vascular and hematological diseases, in insufficiency of liver and kidney as well as in therapy with anticoagulants, fibrinolytics and cytostatics.

Adult↗
PubMed1983

[Metatypical basaloma. A case report].

Report of a female patient with a so-called metatypical carcinoma of big size causing destruction of the facial skull and penetration into the cerebral frontal lobe. After classification of the metatypical carcinoma into the group of basalioma tumors similar computertomographic patterns of different origin are pointed out.

Aged↗
PubMed1977

[The informative value of diagnostic methods in chronic headache. A study of 112 cases (author's transl)].

A thorough neurological diagnostic investigation was carried out in 112 patients with chronic headache existing for an average of 14 years, using a case history questionnaire we had designed for the purpose. Apart from the history and clinical examination, the program included X-ray negatives, angiography, computer tomography, sequence scanning, electroencephalogram and echoencephalogram. Migraine was the most common diagnosis (54.5%). Three cases in which admission to a ward was necessary for more detailed examination are described and demonstrated with reference to neuroradiological illustrative material.

Adolescent↗