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Biomedical subjects

K Köhler

Publications and source records attributed to K Köhler.

At least 109 records · Page 6Linked to original sources
PubMed1989

[The strategy of new imaging procedures in the diagnosis of malignant bone processes].

From the comparison of conventional radiography, computed tomography and angiography the diagnostic value of each of these methods is evaluated. Conventional radiography will remain the most significant method for detecting primary skeletal tumours even if magnetic resonance imaging is considered. CT is an important additional method for the evaluation of tumour size, but is disappointing for tumour classification. Bone scintigraphy is the most sensitive method for the differentiation of solitary and multiple tumours. Angiography is not necessary, except for the planning of surgery in certain cases.

Angiography↗
PubMed1989

[Modern imaging procedures in the diagnosis of an acute apoplectic insult and their therapeutic consequences].

The acute occlusion of arteries as an acute condition demands immediate action. Previously the radiologist was only involved with the angiography elucidation but with the advent of hemolytic therapy a close cooperation of radiologist and intensive care physicians becomes necessary. Under intensive care conditions, the radiologist must be available around the clock, even at night and on holidays. First results of haemolytic therapy seem to justify these efforts.

Adult↗
PubMed1988

[The use of CT in meniscopathy].

The results of CT examination of meniscopathies in 54 patients, most of them competitive athletes, are presented. CT has an overall accuracy of about 90 per cent and can hence be used for diagnosing a lesion of the meniscus with a reasonable amount of safety, while being rapid and avoiding unnecessary exposure to stress. This method, therefore, should be a focal point of the imaging methods and thus be placed between the specialist doctor's findings and possible surgery. The pros and cons of CT compared with other imaging methods are discussed.

Athletic Injuries↗
PubMed1987

[Computed tomography changes during radiotherapy of intracranial tumors].

722 CT examinations were carried out in 178 patients having intracranial tumours. The CT changes resulting from radiotherapy have been analysed. The examinations were performed at the beginning of treatment, after 30 and 50 Gy, after a three months' pause and at the conclusion of the planned total irradiation with 70 Gy. The results indicate that CT of intracranial tumours is an excellent method of demonstrating the effect of treatment. Information regarding the surroundings of the tumour (eg. cerebral oedema, displacement, herniation, compression of the ventricular system etc.) may be as important as that concerning the tumour itself. For evaluating the effect of radiation therapy, measurements of the size of the tumour are much more informative than density measurements. Even after 30 Gy, there was a change in tumour size in 49% of patients. Planned CT control used in conjunction with clinical information provides an effective means of adapting treatment to the changes in the tumour.

Adult↗
PubMed1987

[Dynamic CT in the follow-up assessment of irradiated intracranial tumors].

The importance of follow-up monitoring of the course of irradiated intracranial tumours was underlined by a study of 98 cerebral dynamic computer tomograms made on 38 irradiated intracranial tumour patients. It is demonstrated that dynamic cerebral CT is a sensitive method for assessing tumour vascularisation and for assessing a disturbance of the blood-brain barrier. An adequately adjusted and standardised examination programme is demonstrated and recommended for determining the blood-brain barrier disturbance. The assessment criteria of the density-time curves for evaluating the radiotherapeutic effectively are presented; in this connection, the change in tumour vascularisation. In conclusion, the article explains the most important indications for cerebral dynamic CT in intracranial tumours.

Astrocytoma↗
PubMed1987

Environmental influences on UVB erythema.

In 31 volunteers the superficial skin temperature of one forearm was either raised or lowered by a warm or cold water bath. Immediately afterwards the individual minimal erythema dose (MED) for monochromatic light of 300 +/- 5 nm (UVB) was determined on both arms. Compared to the control forearm, a warm water bath significantly lowered the MED (p less than 0.001), whereas a cold water bath had no influence on the light sensitivity. In 14 volunteers the MED for polychromatic UVB was determined on the lower back with and without a continuous cold air flow 5 min before and during the UVB exposure. The continuous cold air flow significantly increased the MED (p less than 0.05). Environmental factors such as warm water or cold air have modulating effects on UVB erythema. These interactions should be considered when dealing with the effects of natural sun exposure or phototherapy.

Adolescent↗