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At least 271 records · Page 15Linked to original sources
PubMed1991

Liquid crystal contact thermography and its role in evaluating sensory disorders of primary neurological origin as revealed by intraneural microstimulation: a review.

Significant neurological research using liquid crystal thermography (LCT) has been performed; however, its acceptance as a practical and useful modality has been slow. Reviewing the method together with some of the most current research should help clarify its role and reveal its potential. This paper defines thermography, describes how infrared patterns are recorded, and reviews determinants of skin temperature, proposed mechanisms of thermal control, normal thermographic patterns, and the role of intraneural microstimulation (INMS) and LCT in evaluating unmyelinated C fibers in sensory disorders of primary neurological origin. The conclusion is that the anatomical and physiological basis for temperature changes in some sensory disorders of primary neurological origin have been established. LCT emerges as a relatively inexpensive, noninvasive, nonionizing technique that may provide insights on the status of unmyelinated systems plus documentation of subjective sensory symptoms.

Animals↗
PubMed1990

[Possibilities of liquid crystal thermography in the diagnosis of acute paraproctitis].

Results of using coloured thermography with cholesterol liquid crystals in complex diagnostics in 123 patients with different forms of acute paraproctitis are presented. The diagnostic value of the method was established to increase along with deepening and spreading the inflammation focus and development of the scar process in the pararectal fat. In 46 patients (37.4%) with deep forms of the disease the liquid crystal thermography has acquired the leading diagnostic value.

Abscess↗
PubMed1991

[A case of inflammatory breast cancer well treated with intraarterial infusion chemotherapy-- evaluation of therapy by contact thermography].

A case of inflammatory breast cancer, for which an intra-arterial infusion chemotherapy was reported that it was effective. A 63 year-old woman was admitted with the complaint of left breast mass and reddish skin. Clinically it was diagnosed to be inflammatory breast cancer and was treated with an intra-arterial infusion. Contact thermography was employed for the efficacy of the treatment. Three weeks after the chemotherapy the temperature of the tumor site was decreased with a reduction of the tumor size. But, the opposite symptoms appeared before the tum or size increased. Contact thermography seemed to be useful for an evaluation of the preoperative chemotherapy for inflammatory breast cancer.

Breast Neoplasms↗
PubMed1990

Research on the acupuncture principles and meridian phenomena by means of infrared thermography.

In this study, the observation on acupuncture manner, the specificity of acupoints, maintaining needle and "MiuCi" needling, manual and electrical acupuncture, the thermal characteristics of meridians etc. were carried out in order to apply the thermography in the research of principles of acupuncture and meridian phenomena thus create a way to approach to the mechanism of acupuncture effect. Results showed a good prospect for this technique being widely used in the investigation of acupuncture and meridians and its practical significance. It's also identified that the thermography with the advantages of straight-forward, objective and simple fitted to be used in the research of acupuncture and meridians.

Acupuncture Points↗
PubMed1990

[Thermography and scintigraphy of soft tissue tumors in children].

The paper is devoted to analysis of the potentialities of the combined use of thermographic and scintigraphic methods of investigation in differential diagnosis of malignant and benign soft tissue tumors in 51 children. Malignant tumors were diagnosed in 27 patients, benign tumors--in 13, pathological conditions of nontumorous etiology--in 11. Thermography revealed malignant tumors in 18 patients. The GTT based on V. S. Shapot's theory was used for the first time to increase the efficacy of thermography in differential diagnosis of malignant tumors in children. GTT sensitivity in the detection of malignant tumors was 100%. Positive scintigraphy with the tumoritropic agent 67Ga-citrate showing the highest specificity in the diagnosis of soft tissue tumors, was used in combination with thermographic methods. The combined use of the above three methods permitted differential diagnosis of malignant and benign soft tissue tumors in children with the accuracy of 90.1%.

Adolescent↗
PubMed1976

[Role of thermography in the diagnosis of breast neoplasms].

319 cases of breast pathology of doubtful clinical diagnosis were studied by means of thermography and mammography, with histological verification: 214 proved to be malignant tumours and 105 benign. The role of thermography is discussed on the basis of these results; it would appear to be restricted to diagnostic aid status associated with other procedures, particularly clinical examination and mammography.

Adenocarcinoma↗
PubMed1990

[Role of cancer thermography for detection of breast cancer].

Out of one hundred and sixty-two patients that examined by contact thermography, forty-five cases involving 55 cancers were assessed for malignancy. The sensitivity and the specificity of this method of testing were 81.5% and 83.5%, respectively. False negative cases included early stage, small sized and papillotubular carcinomas. Twenty-five per cent of the fibroadenoma and mastopathy cases showed false positive findings. Further, half of the phyllodes tumor and mastitis cases also showed false positive findings. Two of six T0, Tis cases (33.3%) were diagnosed as malignant tumors by thermography. Contact thermographic examinations will be more widely used in the near future.

Breast Neoplasms↗
PubMed1990

[Diagnosis of mammary gland diseases using microwave thermography: a study on adjunctive diagnostic methods in relation to different factors in breast diseases].

Since 1982, a 4.7 GHz microwave radiometer has been used for diagnosis of mammary gland diseases by obtaining temperature information on the region surrounding deeply located tumors. The subjects comprised 95 cases of malignant tumors and 331 cases of benign tumors (total, 426 cases). The analysis of the diagnostic results showed a 91.3% specificity, 72.6% sensitivity, 70.4% predictability, and 87.1% accuracy. The method provides different information on temperatures from conventional infrared telethermography and contact thermography due to the tissue permeability of microwave. Utilizing a combination of conventional methods and microwave thermography (MWT), the diagnostic rate was found to be 94.7%, resulting in an accuracy improvement of approximately 10%. Various factors are investigated for their effects on MWT diagnosis. No significant difference was seen with respect to histologic types. Although significant difference was seen with respect to histologic types. Although significant difference was not observed in relation to the diameter of the tumor, the diagnostic rate in T1 cases, which was 75.0% using two conventional methods, was improved to 100% when combined with MWT. Tumor depth revealed no significant difference. Tumor vascular density showed a high correlation with temperature measured by MWT.

Adolescent↗
PubMed1989

[Active thermography in the diagnosis of breast cancer].

Three procedures of active thermography were used in examination of 1301 patients with stage I-III breast tumors. The evaluation of their diagnostic effectiveness established their evident advantages over any method of passive thermography. Application of active procedures increased diagnostic accuracy by 9-15% and decreased the number of false negative results by 4-10%.

Adenocarcinoma↗
PubMed1989

[SHF-thermography in allergic diseases].

The results of combined clinical allergologic study and SHF thermography in patients with pollenosis, chronic asthmatic bronchitis, bronchial asthma, continuous and seasonal allergic rhinitis and normal controls are reported. Patients with pulmonary disorders showed a reduction by 1 degree C in mean deep temperature around the lungs, and a sevenfold increase in deep temperature dispersion, as compared to the controls. Patients with pollenosis showed a reduction of deep temperatures by 1.5-2 degrees C in the gastric area and the ascending intestinal portion. In patients with allergic rhinitis, the temperature differences between the tip of the nose and maxillary sinuses, typical for normal subjects, become insignificant. Possible mechanisms of the demonstrated temperature abnormalities are discussed. The data obtained are compared to those obtained by means of IR thermography in the same categories of patients.

Abdomen↗
PubMedDate not supplied

[The possibilities of infrared thermography in the diagnosis of thyroid pathology].

The paper is concerned with the results of a retrospective analysis of the diagnostic value of infrared thermography of the thyroid by comparing clinical, histological (75.8% of observed cases) and thermographic diagnoses. Altogether 300 persons were examined, of them 30 were healthy subjects. The clinical diagnosis was based on the results of RIA, radio-isotope, immunological and preoperative cytological methods of investigation. The thermographic criteria of euthyroidism, hypo- and hyperthyroidism permitted accurate characterization of thyroid function in all the examinees, the diagnosis of toxic types of goiter (90.3% of coincidence with clinical diagnosis and 88.3 - with histological diagnosis for diffuse toxic goiter, 83.3 and 85.7% - the nodular toxic goiter), and assessment of the effect of thyrostatic therapy. During pregnancy (48 cases) thermograms of the thyroid of pregnant women were similar to the euthyroid ones, indicating a possibility to use thermography as an objective method of diagnosis of thyroid pathology in pregnancy. This method is informative in the diagnosis of benign nodular lesions (96% of coincidences with histological diagnosis) and less informative in malignant neoplasms and autoimmune thyroiditis (53.8 and 23.5% of coincidences with histological diagnosis).

Adult↗
PubMed1989

Use of thermography in the diagnosis of deep vein thrombosis.

We attempted to evaluate the use of liquid crystal thermography (LCT) as a screening tool in the detection of deep venous thrombosis (DVT) in the lower extremities. Forty patients were examined with LCT and venography. A venogram was used as the standard by which the LCT results were compared. Liquid crystal thermography had a sensitivity of 70% and a specificity of 50%, and it was found not to have a greater accuracy than clinical examination.

Humans↗
PubMed1989

[The use of thermography in clinical practice].

A study is presented of the role of thermography (thermovision) in evaluation of disorders of microcirculation and objectivization of the pain syndrome in some chronic digestive diseases. It is shown that thermography enables to evaluate the functional state of microvessels. Thermovision makes it possible in most cases to objectivize pain, especially in the painful zones on the middle abdominal wall that is registered by an elevated infrared radiation.

Chronic Disease↗
PubMedDate not supplied

Preliminary report on the use of liquid crystal thermography in podiatry.

The use of liquid crystal thermography as an adjuvant in the diagnosis and evaluation of podiatric problems is discussed. Liquid crystal thermography is a useful tool. However, similar to other methods of evaluation that are not diagnostic, specific needs must be weighed with the patient's other clinical and laboratory findings.

Foot↗
PubMed1986

Thermography in the determination of amputation levels in ischaemic limbs.

The reliability of thermography for the determination of the level of amputation for an ischaemic lower limb was compared with that of the doppler flowmeter and the clinical judgement of an experienced surgeon. The results showed that thermography tended to overestimate the degree of ischaemia and to indicate a higher level of amputation than was necessary. The advantages and the limitations of each method are discussed. It is concluded that the clinical judgement of the surgeon was the most reliable method and that the other investigations are only an adjunct to clinical assessment.

Aged↗
PubMed1987

Contact thermography, 99mTc-plasmin scintimetry and 99mTc-plasmin scintigraphy as screening methods for deep venous thrombosis following major hip surgery.

Fifty-six patients scheduled for total hip alloplasty were screened for deep venous thrombosis by means of 99mTc-plasmin scintimetry, 99mTc-plasmin scintigraphy and contact thermography. Investigations were performed on the seventh postoperative day, and a total of 112 legs were examined. Bilateral ascending phlebography was used as reference procedure, and the criteria for deep venous thrombosis were intraluminal filling defects at phlebography. Six patients developed unilateral deep venous thrombosis. All three screening procedures revealed many false positive and several false negative results. The nosographic sensitivity/specificity was 33%/75% for scintimetry, 50%/91% for scintigraphy and 33%/87% for contact thermography, respectively. It is concluded that all three tests are of no value as screening methods for deep venous thrombosis following major elective hip surgery.

False Negative Reactions↗
PubMed1988

[Thermography of the breast. Sensitivity, specificity and reproducibility].

Thermography is a questionable method of diagnosis of breast diseases. In our study, we demonstrate that the low sensitivity and specificity is not related to the experience of the reader. One hundred thermograms were given to five different readers: three of them were thermographists, one was a gynecologist and the last one radiotherapist. Sixteen patients had a breast carcinoma, 18 had benign lesions. Seventy-two patients had no lesion at the time of diagnosis and 4 years after. The false negative and the false positive rates were not different according to the readers. The reproducibility, judged with the Kappa test, was poor. This study, in agreement with most of the previous studies, demonstrates that thermography must not be recommended neither for diagnosis nor for screening of breast diseases.

Breast Neoplasms↗