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[Thermography in healthy subjects and in the syndrome of vegetative-vascular dystonia].

The effectiveness and information content of thermography were studied in 20 normal subjects and 40 patients with vegetative vascular dystonia. There were some individuals in the control group who had "thermal amputation" and who also had some specific features of psychovegetative nature. Patients with vegetative vascular dystonia, apart from the syndrome of "thermoamputation" observed in a great number of cases, particularly in neurotic patients, had other types of skin temperature distribution as well. Thus, patients with hypothalamic insufficiency presented with hyperthermia of the distal portions of the extremities and asymmetry.

Adult↗

Thermography of the bovine scrotum.

Thermographic patterns of the bovine scrotum were established in 15 clinically normal bulls and were compared with patterns in 10 bulls with scrotal and testicular diseases. Thermography of a normal scrotum was characterized by a symmetrical and constant thermal pattern with a temperature gradient of 4 degrees to 6 degrees (C) from the base to the apex of the scrotum. There was a significant difference (P less than 0.05) in the temperature from the base to the apex of the scrotum (34.94 +/- 0.60 C to 30.11 +/- 0.91 C). Lack of thermal symmetry was seen in bulls with unilateral lesions. Inflammation of one testicle increased ipsilateral scrotal infrared emission temperature 2.5 degrees to 3 degrees (C) above that in the contralateral side. If both testes were inflamed and hyperemic, there was an overall increase in scrotal temperature of at least 3 degrees (C), and a reduction in temperature gradient of 2 to 3 degrees (C) from the base to the apex of the scrotum. Area temperatures in bulls with chronic testicular degeneration with fibrosis were reduced.

Animals↗

Liquid crystal thermography of the thyroid.

The results of 102 thyroid liquid crystal thermography (LCT) examinations are discussed. Clinical and laboratory examination, scintigraphy, ultrasonography and LCT were performed in all of the cases. LCT is not suitable for obtaining morphological data and not accurate enough in evaluating thyroid function, but it is a good additional study. It is inexpensive, not hazardous and fast, and can be the first examination in an endocrine outpatient clinic as well as in the follow up of patients with thyroid disease.

Adolescent↗

[Cutaneous thermography in changes of the peripheral vessels in traumatological practice (author's transl)].

The article reports on the method of cutaneous thermography in the diagnosis of superficial thrombophlebitis, acute and chronic thrombosis of the veins and arterial occlusion, in a case material of 80 patients. Cholesterol ester foils were used. Results indicate that this method supplies valuable information on local temperature increases thanks to its rapid, simple and non-hazardous application.

Acute Disease↗

[Thermography in the diagnosis of spinal cord tumors].

Clinical studies of 22 patients with pathological processes in the spinal cord and vertebral column allowed a new method of diagnosing spinal tumors with the aid thermography on a Soviet thermovision "Rubin" set. According to the preliminary data this method facilitates the diagnosis and differentiation between tumors of the spinal cord. The paper contains thermograms of the back in normals and patients with extramedullar tumors of the spinal cord at the vertebral level D5--D6 and thermograms of the lower extremities in this pathological condition.

Adolescent↗

[Localisation of placenta by liquid crystal thermography (author's transl)].

The efficiency of liquid crystals in placenta localisation was checked by comparison of thermographic results with those obtained from using the ultrasonic B-scan method. Ther results obtained from the two techniques were in fair agreement in 93 of 106 cases or 87.7 per cent. The highest amount of agreement was recorded from the group with anterior-wall placenta. For placenta localisation the sensitivity of liquid crystal thermography was found to be inferior to that of the ultrasonic B-scan method.

Female↗

Temperature changes during exercise measured by thermography.

The present study explores the dynamic changes of surface temperatures associated with peripheral vascular shifts during and following hand gripping, one-legged ergometric, and running exercise. An AGA 680 thermovision system, incorporating a Bolex 16-mm camera and displaying 10-colored isotherms on a slave monitor, generated synchronous infrared (IR) movies at 16 frame/s. Incremental increases in surface skin temperatures (Ts) were observed while gripping at 20, 50, and 80% of maximum with a peak rise of 1.7 degrees C. Thermographic recorded Ts changes during dynamic one-legged exercise were higher in the exercising leg than the resting leg. Surface temperatures dropped in both limbs following exercise. The advantages of the use of thermography during transient thermal states, as produced by dynamic exercise, is supported by comparative Ts data taken from thermograms and thermistors.

Hand↗

[Localization of ovulation by contact thermography (author's transl)].

40 patients were examined by means of ELC-contact thermography in order to demonstrate hyperemic areas over the lower abdomen in relation to cycle day and localization of ovulation. Anovulatory women showed no change in the thermic pattern on repeated examinations. However, in 75% of infertile patients with proven ovulation marked hyperemia was demonstrated over one side of the lower abdomen at the time of ovulation and during the luteal phase. In 26 out of 63 recorded menstrual cycles intermenstrual dysmenorrhea was reported which corresponded with the localization of hyperemia 19 times. This simple and noninvasive method could therefore be used to demonstrate ovulation in infertile women. If artificial insemination is indicated in a patient with unilateral tubal stenosis this procedure could be limited to those menstrual cycles in which ovulation is demonstrated on the unaffected side.

Female↗

[Problems of photographic documentation of color patterns in connection with the use of thermography with liquid crystals (author's transl)].

Cholesteric liquid crystals show different colors dependent on their temperature. The "thermography with liquid crystals" makes use of this property for the determination of temperature distributions of human skin. The correct photographic documentation of the color patterns is difficult, because the colors depend on the angle of incidence of light and the direction of observation. Further, the quality of the photos is reduced by the direct reflection of light at the surface. Possible geometrical conditions of taking photos are discussed. An optimum arrangement for producing photos without reflections and color changes is proposed.

Color↗

[Contact thermography in the early diagnosis of tumors of the breast].

After a brief review of thermal physics and physiology, the authors explain the applications of cholesterol ester plates in the study of breast malignancy. Accumulated experience plus the fruits of statistical studies conducted in leading centers, make it advantageous to use contact thermography not only for the early diagnosis of breast malignancy but also for mass screening of the general population. In competent hands, this technic yields accurate and dependable diagnosis; the method is completely harmless to patient and physician and can be used as many times as needed; and in addition, the method is economical both in terms of time consumed and of actual cost of materials. The new method does not supersede roentgenological investigation indiscriminately but confines it to cases that remain doubtful or suspicious after clinical and thermographic examination.

Breast Neoplasms↗

[Clinico-experimental studies of the diagnostic value of plate thermography in the detection of thyroid cold nodules].

Thermography was employed in addition to scintiscanning in the preoperative diagnosis of 87 surgically treated cold thyroid nodes. A new thermographic method was used. Comparison with the scanning and clinical data and the histological finding showed it to be useful, so that its routine employment has been principally in the investigation of cold nodes in addition to hyperfunctioning nodes. The results obtained are of particular value, since they enable a resonably reliable differential diagnosis to be made of benign and malignant forms prior to surgery.

Diagnosis, Differential↗

Thermography as a preoperative and follow-up method for surgery of the hand.

This paper presents thermography as a useful method for the determination of regional thermal variations, during the pre- and postoperative periods, in the surgery and pathology of the hand. This method can give, directly or indirectly, very valuable information for both diagnosis and prognosis, and at times, can give additional data to that provided by clinical and instrumental investigation.

Arthritis↗

After-exercise thermography compared to strain-gauge plethysmography and venous pressure measurements to detect deep venous insufficiency.

After-exercise thermography (AET) has been claimed to be a means of detecting deep venous insufficiency. The question was studied in 167 patients four to five years after major surgery. The tests af follow-up included AET, strain-gauge plethysmography and venous pressure measurements in addition to clinical examination and a questionnaire concerning history, symptoms etc. No correlation was found between abnormal AET and objective manifestations of deep venous insufficiency.

Aged↗

Contact thermography of spinal root compression syndromes.

A thermographic technique is described that uses cholesteric liquid crystals that change color in response to variations in surface temperature. The crystals are embedded in elastic flexible sheets that conform to the contours of the torso and extremities. The technique is well suited to temperature measurement of individual skin dermatomes and myotomes. Typical heat patterns emanating from the torso and extremities have been observed and correlated with root compression syndromes at low cervical and low lumbosacral levels. The imaging results correlate well with clinical and surgical findings, particularly when the extremity dermatomes are included. The technique objectively documents the subjective complaint of pain and approaches myelography in accuracy. It was in agreement with myelography in 86% of cases and with surgery in 95% of cases. Liquid crystal thermography may, therefore, effectively screen patients of myelography and can complement it in identifying clinically significant abnormalities.

Diagnosis, Differential↗

[Liquid crystal thermography in the diagnosis of acute appendicitis, cholecystitis and pancreatitis].

The authors have shown the diagnostic value of the coloured liquid crystal thermography on the basis of a comparative investigation of the data of clinical and thermographic studies, operation findings and histological studies in 223 patients with acute appendicitis, cholecystitis, pancreatitis and other diseases of organs of the abdominal cavity. The method is recommended for wide use in clinical practice.

Acute Disease↗