• Title/Summary/Keyword: test specificity

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What are Valuable Positive Signs of Supraspinatus Test for Diagnosis of Torn Rotator Cuff? - Comparison of Pain and Weakness in "Empty Can Test" and "Full Can Test" - (회전근 개 파열의 진단을 위한 극상근 검사에서 유용한 양성 징후는 무엇인가? - "Empty can test"와 full can test"에서 통증과 근력 약화의 비교 -)

  • Shin, Hun-Kyu;Kim, Eu-Gene;Jeong, Hwa-Jae;Kim, Jong-Min;Choi, Jae-Yol;Lee, Yong-Taek
    • Clinics in Shoulder and Elbow
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    • v.10 no.1
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    • pp.27-32
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    • 2007
  • Purpose: To investigate the validity of positive signs of supraspinatus test. Materials and Methods: The empty can test and full can test were performed on 200 shoulders which were diagnosed with magnetic resonance imaging or surgical findings as full thickness tear, partial thickness tear and no tear. Presence of pain, weakness, pain or weakness, and both pain and weakness were recorded as positive signs separately. The two tests with positive signs were compared and analyzed. Results: Pain and weakness were severity-dependent, and the empty-can test had a higher incidence of pain. The sensitivities of the two supraspinatus tests in all positive signs were higher when including partial-thickness tears in the tear group; however, their specificities were higher when excluding partial-thickness tears. The sensitivities of an empty-can test in 'pain', 'pain or weakness', 'both pain and weakness' were higher than those of the full-can test, otherwise, the specificity of the full-can test for 'pain' and 'pain or weakness' were higher. Concordance rate between 'pain or weakness' and 'pain' was the highest in all categorization. Conclusion: Both empty can and full can test were valuable for detecting torn rotator cuff.

Clinical Application of Ultrasound-Guided Thyroid Fine Needle Aspiration Biopsy and Thinprep Cytology Test in Diagnosis of Thyroid Disease

  • Wei, Ying;Lu, Yao;Li, Chenxi
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.10
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    • pp.4689-4692
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    • 2016
  • Purpose: To study the clinical application value of ultrasound guided thyroid fine needle aspiration biopsy and thinprep cytology testing in diagnosis of thyroid disease. Methods: A total of 78 patients with thyroid nodules were enrolled, 34 males and 44 females, aged 33-64 years old with mean age of 47.6 years. All underwent thyroid module fine needle puncture after surgery to assess cell pathology and histopathological features. Results: Sufficient specimens were obtained from all of 78 patients, the cytological results of 73 cases (93.6 %) being consistent with pathological results. While 20 cases (25.6 %) were malignant tumors, 44 (56.4 %) were benign and 9 (11.5 %) were non-tumor lesions. The sensitivity of benign and malignant thyroid nodule by thyroid fine needle puncture was 90.9 %, specificity was 98.1 % and the positive predictive value was 96.3 %. Conclusions: It is demonstrated that ultrasound-guided thyroid fine needle aspiration biopsy and thinprep cytology testing have diagnostic value in clinical application for thyroid disease,showing good diagnostic coincidence rates with histopathological examination. They can thus be regarded as safe and effective for preoperative diagnosis and providing an appropriate basis for selection of surgery.

A New IgG Immunoblot Kit for Diagnosis of Toxoplasmosis in Pregnant Women

  • Khammari, Imen;Saghrouni, Fatma;Lakhal, Sami;Bouratbine, Aida;Said, Moncef Ben;Boukadida, Jalel
    • Parasites, Hosts and Diseases
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    • v.52 no.5
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    • pp.493-499
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    • 2014
  • The determination of the accurate immune status of pregnant women is crucial in order to prevent congenital toxoplasmosis. Equivocal results with conventional serological techniques are not uncommon when IgG titers are close to the cut-off value of the test, so that a confirmatory technique is needed. For this purpose, we developed a homemade immunoblot (IB) using soluble extract of Toxoplasma gondii tachyzoites and assessed it by testing 154 positive, 100 negative, and 123 equivocal sera obtained from pregnant women. In order to select the more valuable bands in terms of sensitivity and specificity, we used the Youden Index (YI). The highest YIs were those given by the 32, 36, 98, 21, and 33 bands. The simultaneous presence on the same blot of at least 3 bands showed a much higher YI (0.964) and was adapted as the positivity criterion. The analysis of results showed that our homemade IB correlated well with the commercial LDBIO Toxo II $IgG^{(R)}$ kit recently recommended as a confirmatory test (96.7% of concordance).

Dot-Blot Immunoassay of Fasciola gigantica Infection using 27 kDa and Adult Worm Regurge Antigens in Egyptian Patients

  • Kamel, Hanan H.;Saad, Ghada A.;Sarhan, Rania M.
    • Parasites, Hosts and Diseases
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    • v.51 no.2
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    • pp.177-182
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    • 2013
  • The purpose of the present study was to evaluate the potential role of the 27-Kilodalton (KDa) antigen versus Fasciola gigantica adult worm regurge antigens in a DOT-Blot assay and to assess this assay as a practical tool for diagnosis fascioliasis in Egyptian patients. Fasciola gigantica antigen of an approximate molecular mass 27- (KDa) was obtained from adult worms by a simple elution SDS-PAGE. A Dot-Blot was developed comparatively to adult worm regurge antigens for the detection of specific antibodies from patients infected with F. gigantica in Egypt. Control sera were obtained from patients with other parasitic infections and healthy volunteers to assess the test and compare between the antigens. The sensitivity, specificity, positive and negative predictive values of Dot-Blot using the adult worm regurge were 80%, 90%, 94.1%, and 69.2% respectively, while those using 27-KDa were 100% which confirms the diagnostic potential of this antigen. All patients infected with Fasciola were positive, with cross reactivity reported with Schistosoma mansoni serum samples. This 27-KDa Dot-Blot assay showed to be a promising test which can be used for serodiagnosis of fascioliasis in Egyptian patients especially, those presenting with hepatic disease. It is specific, sensitive and easy to perform method for the rapid diagnosis particularly when more complex laboratory tests are unavailable.

Comparison on serological reaction between complement fixation test and enzyme-linked immunosorbent assay for detection of antibodies against Sendai virus, mouse hepatitis virus and Mycoplasma pulmonis in mice and rats (마우스 및 랫트의 Sendai virus, mouse hepatitis Virus, Mycoplama pulmonis 감염(感染)에 대한 보체결합반응(補體結合反應)과 효소표식면역흡착측정법(酵素標識免疫吸着測定法)과의 비교(比較))

  • Chung, Yoo-yeul;Lee, Hak-cheul;Lee, Eun;Yoo, Byung-sam
    • Korean Journal of Veterinary Research
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    • v.29 no.4
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    • pp.517-523
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    • 1989
  • This study was undertaken to establish reliable diagnostic-procedures for the microbiological monitoring of laboratory animals. Murine(mice and rats) antibodies against hemagglutinating virus of Japan(HVJ), mouse hepatitis virus(MHV) and Mycoplasma pulmonis(Mp) were detected sensitively and specifically in experimentally and naturally infected animals' sera by an indirect enzyme-linked immunosorbent assay(ELISA), using urease conjugated antimurine immunoglobulin. The sensitivity and specificity of the complement fixation test which has been apllied widely for serodiagnosis of HVJ, MHV and Mp infections were apparently lower than those of ELISA. From these results, the ELISA was found to be available for the serodiagnosis of HVJ, MHV and Mp infections in mice and rats.

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Diagnostic Agents for Oral and Maxillofacial Diseases (구강 질환 진단용 제제)

  • Kho, Hong-Seop
    • Journal of Oral Medicine and Pain
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    • v.24 no.2
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    • pp.181-187
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    • 1999
  • The most important progress in diagnostic sciences is the increased sensitivity and specificity in diagnostic procedures due to the development of newer micromethodologies and increasing availability of immunological and molecular biological reagents. The outcome of researches in this field has already provided DNA probes and antibodies which can be used for diagnosing various kinds of diseases including inherited ones. This development can be also applied to diagnose diseases in oral and maxillofacial regions. Technological advances have yielded highly sensitive test methodologies so that low analyte concentration and small sample volume are no longer limiting factors. Therefore, saliva can be useful test fluid for an array of analytes. Salivary constituents of diagnostic significance include steroid hormones, antibodies, drugs, and tumor markers. Of the proteins present in saliva, viral-specific immunoglobulins are of the greatest diagnostic interest. The development of conjugates and antigens by recombinant DNA technique and peptide synthesis is necessary for clinical application. Several kits developed for the purpose of blood testing should be modified to permit their application to saliva. The final practical outcome of researches in diagnostic sciences will be various diagnostic agents which can be used for detection of bacteria and viruses, screening and diagnosis of diseases, genetic screening for forensic individual identification. For these purposes, collaboration researches and development between institutions and companies are essential.

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Detection of Mycobacterium tuberculosis by PCR from Trace Clinical Specimens and Paraffin-embedded Tissues (임상가검물과 파라핀 포매 조직에서 PCR법을 이용한 결핵균의 검출)

  • 김은중;최우순;황석연
    • Biomedical Science Letters
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    • v.6 no.1
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    • pp.55-63
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    • 2000
  • This study has been carried out to investigate the sensitivity of polymerase chain reaction (PCR) method over conventional acid-fast bacilli (AFB) staining and/culture methods for the detection of Mycobacterium tuberculosis from trace body fluid and paraffin-embedded tissues (PET) specimens. A total of 65 cases were employed for the AFB staining and culture test, and a total of 50 cases were subjected to PCR and histopathological analysis. Among the specimen showing negative reaction to AFB staining, 12.1% were positive to PCR and 3.7% of the specimen representing negative result to culture test showed positive reaction to PCR. In addition, 20.0% of the specimen with AFB negative showed positive reaction to PCR. From these results, it could be concluded that PCR method overwhelms AFB staining and culture tests in sensitivity and specificity to M tuberculosis detection.

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An Experimental Study on the Evaluation of Mechanical Properties of CFT Column by Unstressed Test and Stub Specimen (비재하 가열시험 및 Stub 시험체를 활용한 CFT기둥의 역학적 특성평가에 관한 실험적 연구)

  • Lee, Dae-Hee;Lee, Tae-Gyu;Lee, Eui-Bae;Kim, Young-Sun;Kim, Gyu-Yong;Kim, Moo-Han
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2008.05a
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    • pp.209-213
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    • 2008
  • Recently, it increases in use of CFT(Concrete filled steel tube, below CFT) because material and method are required to be diversification and High-Performance according to increase the super-high structure. But, CFT column lose bearing capacity under fire because steel tube is exposed to outside. As a result, structure is collapsed and then it cause much damage. In case of the Europe, Japan and America, they have studied the fire-resistance performance of CFT under fire for a long time. However, it would have hardly studied it in domestic because it is much difficulty about experiment machine and cost. So it is needed base on fire-resist performance of CFT under fire. Therefore, this study dynamic specificity of stub column which made tester of stub column based on facts of strength and mixing fiber evaluated used heating and load testing machine. As a result, it is willing to propose fundamental data for quick and accurate diagnosis of deteriorated concrete structure by fire damage with experiment according to the design high strength concrete.

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A Study of the Effects of Massage on Hamstring Muscles Extensibility (맛사지가 슬 근 신장성에 미치는 영향)

  • Chung Hyung-Kuk;Choi Jin-Ho;Kwon Hyuk-Cheol
    • The Journal of Korean Physical Therapy
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    • v.5 no.1
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    • pp.3-8
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    • 1993
  • The purpose of this study was to investigate the specificity of the effort of massage on hamstring muscles extensibility a9 measured by fingertip to floor test. The participant were healthy young men(n=25). Manual massage was applied to the posterior aspects of the both thigh (hamsting portion) during 20 mins. We measured four times ; that is, after rest 20 mins-before massage, immediately after massage, immediately after massage and 20 mins. after massage. As the middle fingers are reaching beyond the floor level, the level was considered as ( + ) level. And the middle fingers did not touch the 리oor, the level was considered as ( - ) level. Results were as fellows : 1) There was significant difference between group 1 and group 2(P<0.05), 2) There was no significant difference between group 2 and group 3(P>0.05). 3) There was no significant difference between group 3 and group 4(P>0.05). Therefore, the extensibility of hamstring muscles was increased after massage more than rest during 20 mins, before massage, and the effects of massage application were prolonged during 20 mins, after massage.

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Mitochondrial Disease: Will it become a New Great Imitator? (사립체 질환: 새로운 위대한 모방자가 될 것인가?)

  • Kim, Young Han;Ahn, Seok Min;Seo, Young Jun;Yoon, Jong Hyung;Bae, Eun Ju;Lee, Hong Jin
    • Journal of The Korean Society of Inherited Metabolic disease
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    • v.16 no.3
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    • pp.123-134
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    • 2016
  • Mitochondrial disease is a group of disorders caused by dysfunctional mitochondria, the organelles that generate energy for the cell. Diagnosis of mitochondrial disease is difficult, subtle, and has many problems. It is more likely to miss the diagnosis of mitochondrial disease, especially in borderline cases where the symptoms of the disease are not severe. In this regard, urine organic acid analysis is noninvasive and can increase the sensitivity and specificity through repeated load test with few changes according to the specimen. And, It is considered to be suitable as a screening test for mitochondrial diseases because it has a great advantage of distinguishing from organic aciduria, urea cycle disorder and fatty acid oxidation disorder which may have similar symptoms. The purpose of this study was to investigate the clinical features and age distribution of mitochondrial diseases diagnosed by organic acid analysis and to establish the policy of diagnosis and treatment based on this study.

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