Biomedical subjects
H Dengel
Publications and source records attributed to H Dengel.
[A comparative study of methods of preparing the colon for a double-contrast study: Prepacol versus ricinus capsules with a cleansing enema].
In a controlled study, we analyzed the efficiency of cleansing out the colon and the best contrast medium of two different regimens (total n = 237) for preparing the colon for double-contrast examination. The recommendations regarding diet and liquid intake, contrast medium and examination technique were identical in both groups. The combination laxative Prepacol without cleansing enema resulted in a more thoroughly cleaned colon that ricinol with cleansing enema (very good/good cleanliness: Prepacol, 92.4%; ricinol, 83.2%, p less than 0.05). However, the quality of contrast medium (good: Prepacol 71.2% as opposed to ricinol 74.8%) was (independent of the preparation method) below standard regarding cleansing of the colon. Better patient compliance was accomplished by Prepacol because the medication was easier to take, and omitting the cleansing enema was a reduction in burden for both patients and medical staff. Written instructions for diet is essential and was of help to the patients.
[Mammography after breast-preserving therapy of breast cancer].
Follow-up after tumorectomy and intensive irradiation for carcinoma of the breast creates new diagnostic problems. In particular, more experience is necessary about the value of mammography. We have therefore analysed the mammograms of 104 patients intensively followed over one to eight years after primary treatment. Changes in the appearances of the breast due to irradiation are compared with mammographic changes caused by recurrence of tumor. It can be shown that definite structural patterns can be recognised regularly. Optimal diagnosis of recurrencies, however, is only possible by comparing all follow-up mammograms, and additionally the pre-operative films. Close cooperation between the surgeon, radiotherapist and diagnostic radiologist is essential.
[Value of special roentgen studies of lesions of external ligaments of the upper ankle joint].
The advantage of special radiological investigations after damage of the external tendon of the ankle joint is absolutely certain. Clinical findings, functional x-ray pictures, and for some cases arthrography of the ankle joint render the correct diagnosis. Merely functional x-ray pictures will not always be sufficient, although sometimes this has been pretended. Experiences are described and indications for arthrography are pointed out. Arthrography certainly is the most accurate method for investigations of lesions of the external tendon of the ankle joint. Nevertheless it should only be performed for special cases and after critical interpretation of the functional x-ray pictures, because it is a rather invasive method.
[Carbon black pneumoconiosis (author's transl)].
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