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Biomedical subjects

W Dihlmann

Publications and source records attributed to W Dihlmann.

At least 55 records · Page 3Linked to original sources
PubMed1983

[Computed tomography of Paget's disease of the hip].

Paget's disease of the hip has been studied by computed tomography in 53 instances. The changes in the bone are defined (sclerotic, trabecular, nodular and lacunar-erosive type). Changes in the joints, consisting of widening, deformity and coincidental arthritic manifestations are differentiated. A special type of change in the joint consists of narrowing of the anterior and posterior aspects, with widening of the central portion. Acetabular protrusion (60.4%) is more common than previously recognised; coexisting arthritic changes were found 69.8%.

Acetabulum↗
PubMed1983

[Spondylosclerosis hemispherica. Roentgenmorphologic and histomorphologic contribution to this syndrome].

We have observed 87 cases of spondylosclerosis hemispherica. This lesion has a multiple aetiology, including bacterial causes (florid or low grade infections), stress due to scoliosis, ankylosing spondylitis, dorsal disc prolapse or diffuse disc degeneration. In the majority of cases it is possible to ascertain the aetiology from a consideration of the clinical and serological findings, together with ordinary radiography, conventional tomography or computed tomography. Appropriate treatment can then be given.

Adult↗
PubMed1983

[The dorsum sellae as an indicator of axial skeletal osteoporosis. The results of computer tomographic densitometry].

Computer tomographic densitometry of the dorsum sellae shows decreasing density with increasing age. This reduction does not take place evenly, but increases markedly at the age of 50. Densities below twice a standard deviation of mean values suggest that there is porosis of the axial skeleton as well. This provides an interesting and useful piece of additional information during cranial computed tomography.

Adult↗
PubMed1983

Computed tomography of the hip joint capsule.

In 95% of cases, computed tomography (CT) enables the articular capsule of the hip joint to be directly visualized. Articular effusion in the hip joint can also be recognized in the CT image. In inflammatory arthritis and active osteoarthrosis of the hip joint, thickening of the articular capsule or articular effusion appears in the CT image. In addition, "undulation" of the articular capsule sometimes occurs. However, we have also observed this wavy configuration of the hip joint capsule in discrete latent osteoarthrosis of the hip joint. It is, therefore, unequivocally indicative of disease only when seen in association with articular effusion or thickening of the capsule. Focal fatty accumulation of the capsule distinguished from articular capsule tissue by its low density.

Arthritis↗
PubMed1982

CT analysis of the upper end of the femur: the asterisk sign and ischaemic bone necrosis of the femoral head.

In computed tomography (CT) of the head of the femur, a star-shaped structure can be seen which we refer to as the asterisk or asterisk sign. The asterisk is formed by thickened weight-bearing bone trabeculae. It can be shown by CT that the asterisk exhibits a characteristic change in ischaemic bone necrosis of the femoral head, even when the disease is in an early stage. CT of the hip joint is therefore an important examination for early diagnosis of ischaemic disease of the femoral head.

Femur Head↗
PubMed1982

[Computerized tomography of the talo-crural joint].

CT provides an additional method of investigating the ankle joint in cases of trauma and posttraumatic lesions. Concerning fractures CT displays preoperatively the true extent of the bony lesion. The ligaments of the tibiofibular syndesmosis are directly visible in CT. Posttraumatic states (reparatively ossified avulsions of ligaments, partial osteonecrosis of the astragalus) are recognizable in CT.

Ankle Injuries↗
PubMed1981

Hemispherical spondylosclerosis--a polyetiologic syndrome.

Radiologic examination of 43 patients revealed 47 lesions of a type which we have termed hemispherical spondylosclerosis (HSS). This term describes and includes the following essential and possible radiologic findings of the disease: 1) Hemispherical (or "dome-" or "helmet-shaped") sclerosis of the vertebra above the intervertebral disk. Thus it is a supradiscal HSS. 2) One or more small erosions of the inferior end plate of the vertebra involved. 3) Periosteal apposition on the anterior border of the vertebra along the length of the sclerosis. 4) New bone formation on the inferior end plate. 5) Anterior vertebral osteophytes. 6) Narrowing of the disk space below the affected vertebra. HSS occurs not only as a sequel of degenerative disk disease, but also in bacterial (tuberculous and non-tuberculous) spondylitis, ankylosing spondylitis, osteoid osteoma, and metastases of neoplasms. The differential diagnosis between inflammatory and noninflammatory pathogenesis and etiology of HSS is described. The characteristic shape of HSS, its sites of predilection (14 greater than L5 greater than L3), and the preponderance of female sufferers from this painful condition are due to factors which, as yet, remain unknown.

Adult↗
PubMed1981

[Computed tomography of the hip joint].

Computed tomography through the hip joint should be used only after conventional radiographs (at least a.p. views). It may provide information that is diagnostic or helpful, eg. in bacterial infections, trauma or praearthrotic states. Indications for surgery may be obtained in the presence of inflammatory-rheumatic and degenerative hip disease, arthritic deformities and trauma, and the type of suitable operation may be indicated. The obturator internus muscle, which can be seen medial to the acetabulum on the scan, is an important diagnostic indicator where there is trauma or bacterial infection of the hip joint. The capsule of the hip joint can be visualized directly. Slice thickness of 6 mm. or less is necessary.

Hip Dislocation↗
PubMed1981

Computerized tomography in typical hyperostosis cranii (THC).

THC is a remodelling process affecting the bones of the neurocranium. CT analysis shows that both the inner and the outer table as well as the diploë can be involved in this process. The term typical hyperostosis cranii (THC) replaces the terms derived from conventional radiography such as nebula frontalis, hyperostosis frontalis interna, etc., as CT shows transitional stages between them. A new type of THC is described. There are morphological similarities between THC and Paget's disease in CT.

Adult↗
PubMed1981

Computed tomography in the diagnosis of prolapsed intervertebral disc.

In thirty-nine out of forty-one patients with radicular pain in the lumbar region, prolapse of the intervertebral disc could be diagnosed by computed tomography without intrathecal administration of contrast medium. In one patient a paravertebral tumour (malignant neurilemmoma) was found. One case could not be diagnosed by computed tomography. Myelographic findings in the patients corresponded with those of computed tomography, and the findings in CT scans made immediately after myelography. The technical requirements for non-invasive CT of the intervertebral disc are discussed.

Humans↗
PubMed1980

[Aphthous ulcers--an early radiological sign of Crohn's disease? (author's transl)].

Thirty-eight patients with histologically confirmed Crohn's disease are described. Eleven of these showed so-called aphthous ulcers. These were most common in the colon (five patients) and terminal ileum (four patients). Aphthous ulcers are small mucous membrane erosions on the surface of hypertrophic lymph follicles with surrounding oedema. From our material and from the literature we conclude that aphthous ulcers are occasional radiological signs and not invariable early signs of Crohn's disease. Their specificity has not been proved. Differentiation from gastric erosions in cases of gastro-duodenal involvement is discussed.

Adult↗
PubMed1979

Current radiodiagnostic concept of ankylosing spondylitis.

Nine radiodiagnostic rules are drawn from the X-rays of 2125 ankylosing spondylitis patients. The significance of early diagnosis of the 'multicolored' saroiliac X-ray is looked onto; the syndesmophyte, squaring-phenomenon, barrel-shaped vertebra, Romanus and Andersson lesions, and the ossification of ligaments are discussed. The changes at the apophyseal and the costovertebral joints, unimportant for early diagnosis, are explored.

Adult↗