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M Gade

Publications and source records attributed to M Gade.

8 recordsLinked to original sources
PubMed1999

Using ERS-2 SAR images for routine observation of marine pollution in European coastal waters.

More than 660 synthetic aperture radar (SAR) images acquired over the southern Baltic Sea, the North Sea, and the Gulf of Lion in the Mediterranean Sea by the Second European Remote Sensing Satellite (ERS-2) have been analyzed since December 1996 with respect to radar signatures of marine pollution and other phenomena causing similar signatures. First results of our analysis reveal that the seas are most polluted along the main shipping routes. The sizes of the detected oil spills vary between < 0.1 km2 and > 56 km2. SAR images acquired during descending (morning) and ascending (evening) satellite passes show different percentages of oil pollution, because most of this pollution occurs during night time and is still visible on the SAR images acquired in the morning time. Moreover, we found a higher amount of oil spills on SAR images acquired during summer (April-September) than on SAR images acquired during winter (October-March). We attribute this finding to the higher mean wind speed encountered in all three test areas during winter. By using an ERS-2 SAR image of the North Sea test area we show how the reduction of the normalized radar backscattering cross section (NRCS) by an oil spill depends on wind speed.

Environmental Monitoring↗
PubMed1997

Cost and effectiveness analysis of chiropractic and physiotherapy treatment for low back and neck pain. Six-month follow-up.

STUDY DESIGN: A randomized, clinical trial was conducted in which patients with back/neck problems, visiting a general practitioner, were allocated to chiropractic or physiotherapy as primary management. OBJECTIVES: To compare outcome and costs of chiropractic and physiotherapy in managing patients with low back or neck pain. SUMMARY OF BACKGROUND DATA: Earlier studies on the treatment of back pain by spinal manipulation have shown inconsistent results. When a "new" strategy--chiropractic--in the treatment of back pain was introduced in public health care in Sweden, there was a need to compare the effects and costs of chiropractic with the established physiotherapy. METHODS: Three hundred twenty-three patients aged 18 to 60 years who had no contraindications to manipulation and who had not been treated within the previous month were included in the study. Treatment was carried out at the discretion of the therapist. Outcome measures were primarily changes in pain intensity and general health, both assessed with visual analog scale and Oswestry pain disability questionnaire. Direct and indirect costs were measured. RESULTS: For patients with low back or neck pain visiting the general practitioner in primary care, both chiropractic and physiotherapy as primary treatment reduced the symptoms. No difference in outcome or direct or indirect costs between the two groups could be seen, nor in subgroups defined as duration, history, or severity. CONCLUSIONS: The effectiveness and total costs of chiropractic or physiotherapy as primary treatment were similar to reach the same result after treatment and after 6 months.

Adolescent↗
PubMed1983

Urinomas secondary to pyelosinus backflow.

Pyelosinus backflow of urine usually occurs through infractions of the calyceal fornices from obstruction or retrograde study. The primary cause appears to be a rapid rise in intrapelvic pressure with the backflow representing a physiologic release mechanism which returns the intrapelvic pressure to normal. Pyelosinus backflow is a benign process. However, complications can occur. In some persons whose urine transport cannot accommodate periodic increased urine flow or pressure, repeated pyelosinus backflow may lead to pseudocyst (urinomas) or retroperitoneal fibrosis. Several mechanisms produce these complications in children and adults. The authors present cases of urinomas related to upper tract obstruction from posterior urethral valves as well as ureteral obstruction by tumor, post-treatment scarring, retroperitoneal fibrosis, or calculus. Intrarenal urinomas are illustrated presumably in kidneys with firm capsular attachments to the renal pelvis which do not allow retroperitoneal extravasation.

Aged↗
PubMed1976

The normal and abnormal development of the appendix. A radiographic assessment.

Radiographic examinations of the colon in the adult demonstrate a wide variety of contours of the interior cecal segment and appendix. These findings are a result of the normal developmental process of the appendix which can be arbitrarily separated into four stages. Examples of appendiceal development arrested at different stages, as well as variations of the normal adult appendix, are explained and illustrated. Forms of primitive development and lack of development (agenesis) are discussed.

Appendix↗
PubMedDate not supplied

CT features of primary cerebral lymphoma in AIDS and non-AIDS patients.

Computed tomographic study of six cases with primary cerebral non-Hodgkin lymphoma are reviewed. Three had a history of intravenous drug abuse and were diagnosed as having acquired immunodeficiency syndrome (AIDS). All cases presented with space occupying lesions in the frontal lobe with the exception of Case 4. Computed tomography demonstrated multiple lesions in AIDS cases whereas non-AIDS lesions were invariably single. The AIDS patients died within 1 year despite radiotherapy as compared with the non-AIDS patients.

Acquired Immunodeficiency Syndrome↗