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At least 685 records · Page 38Linked to original sources
PubMed1991

Pyroelectric vidicon thermography and cold challenge quantify the severity of Raynaud's phenomenon.

Thermographic images of the hands of patients with primary and secondary Raynaud's phenomenon and of a group of normal subjects, recorded before and after cold provocation using a pyroelectric vidicon thermal imaging system, showed differences in thermal distribution patterns that were characteristic of primary Raynaud's phenomenon (RP), scleroderma (RS) and normal, and were exaggerated by cold provocation. The responses to cold challenge, assessed by computing the mean temperature of the hand as it recovered from cold challenge and plotting these values against time to produce a rewarming curve, were also characteristic of the patient and the normal groups, and gave an indication of the severity of circulatory impairment. Methods are described for the simple numerical characterization of these parameters.

Adolescent↗
PubMed1975

Mammography, xeroradiography, and thermography.

The concept of early breast cancer as a palpable mass with limited secondary manifestations is rapidly changing. Thanks largely to mammography, a malignant breast neoplasm can be detected long before it forms a mass. Because cure rates in this stage are high, reliable means of early detection and diagnosis are of deep concern. Early detection has certainly been the major influence in reducing mortality from cancer of the cervix, and results of recent studies indicate that this will also be true for cancer of the breast.

Adult↗
PubMedDate not supplied

Use of thermography to predict intestinal viability and survival after ischemic injury: a blind experimental study.

Reactive hyperemia is a characteristic of viable ischemic tissue that has been revascularized. In 14 normal dogs, segments of bowel were made ischemic for periods of 2--8 hours. Thermograms and surface temperature measurements of exposed ischemic and nonischemic segments were obtained before and every 5 minutes for 30 minutes after revascularization. Thermograms demonstrated uniform reactive hyperemia throughout the segments ischemic for 2--3 hours; hyperemia with some nonuniform, patchy areas in segments ischemic for 3--7 hours; and no hyperemic response in segments ischemic for 8 hours. All five dogs demonstrating uniform hyperemia survived and the bowels were found to be histologically normal. Four of the six dogs showing hyperemia with some nonuniform areas survived, but all six showed areas of transmural damage with fibrosis and scarring histopathologically. The three dogs with no hyperemic response died of pathologically proved bowel infarction. Our results indicate that thermograms can document the degree and extent of reactive hyperemia. Thermograms, therefore, may be an important aid in assessing bowel viability during surgery.

Animals↗