• Journal of the Korean Society of Radiology
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• v.9 no.6
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• pp.357-362
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• 2015

This study was to evaluate the usefulness through the comparison of patients group and healthy control group by acquiring a variety of functional parameters index from time-activity curves of salivary gland scan using 99mTc-pertechnetate. From December 2014 to February 2015, had the targets of 30 patients with dry mouth and 10 people in healthy control group underwent the salivary gland scan. After intravenous injection of 370 MBq of 99mTc-pertechnetate, Vitamin C powder stimulation was administerd orally at 20 min and then 10 minutes were taken scan. The method of quantitative analysis was as follows, the time-activity curve was drawn after the parotid gland and submandible gland were prescribed as a region of interest, a variety of function parameters index was obtained in each position of the curve, and the patients group and the control group were compared. As for the methods applied in comparison and measurement, uptake ratio (UR), time at maximum counts (Tmax), time at minimum counts (Tmin), maximum accumulation (MA), accumulation velocity, maximum secretion (MS), maximum stimulation secretion (MSS), and secretion velocity (SV) were used. In the comparison of functional parameters index of patient group and normal group, the healthy normal group showed significant difference compared to the patient group in all indices except for the minimum radioactivity time (Tmin), and also in terms of variation over time the normal group showed significant difference compared to the patient group (p<0.05). Consequently, it was considered that the quantitative analysis that used a variety of function parameters index would be useful for evaluating the function of the salivary glands of the patients with dry mouth as an objective and standardized information.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.6
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• pp.341-348
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• 2021

Serum amylase is a representative enzyme secreted by the salivary gland and pancreas. This study investigates the clinical significance of serum amylase levels in Sjögren's syndrome (SS). Totally, 70 female subjects were enrolled, who were diagnosed as SS and had no accompanying afflictions that affected the serum amylase levels. Unstimulated salivary flow rate (U-SFR) and stimulated SFR (S-SFR), salivary gland scan, and disease activity markers (ESSDAI and ESSPRI), as well as blood tests including ESR, CRP, and amylase, were evaluated. Serum amylase showed significant positive correlation with the U-SFR and S-SFR, and was increased with higher ejection fraction (EF) of the parotid gland. However, there was no significant correlation with disease activity and inflammatory markers. Based on their average amylase levels, subjects were divided into two groups. The group with higher serum amylase levels showed a statistically significant increase in the S-SFR and EF of the parotid gland. Considering the results of the salivary gland scan, we conclude that serum amylase is significantly correlated with SFR and the EF of the parotid gland, thereby indicating that the salivary gland function remains intact in SS.

• Tuberculosis and Respiratory Diseases
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• v.61 no.3
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• pp.289-293
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• 2006

Diffuse infiltrative lymphocytosis syndrome is an autoimmune syndrome that is characterized by the oligoclonal expansion of CD8+ T-lymphocytes in response to human immunodeficiency virus (HIV) antigens. The clinical manifestations include bilateral enlargement of the parotid glands, lymphocytic interstitial pneumonitis, lymphocytic hepatitis, neurological involvement and systemic lymphadenopathies. In addition to a positive HIV test, the diagnostic histopathological findings are CD8+ T-lymphocytic infiltrations in the lymphnodes, liver, lung, muscle and the salivary or lacrimal glands without granulomatous or neoplastic involvement. We report a case of pulmonary involvement of diffuse infiltrative lymphocytosis syndrome that was associated with a human immunodeficiency virus infection.

• The Korean Journal of Cytopathology
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• v.15 no.1
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• pp.40-44
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• 2004

To evaluate the quality of fine needle aspiration cytology diagnosis on malignant salivary gland neoplasms, cytologic findings were correlated with histologic diagnosis of 56 surgically removed malignant salivary gland tumors. Seven cases (12.5%) were insufficient, 23 cases (41.1%) were diagnosed as malignant, 17 (30.4%) cases were accurately diagnosed by histologic subtype, and 9 cases (16%) were diagnosed as benign. Five out of 9 false negative cases were misdiagnosed as pleomorphic adenomas. Except the cases with insufficient specimen, overall sensitivity was 81.6%, and the sensitivity varied according to the histologic subtype; 91% in salivary duct carcinoma, 100% in carcinoma ex pleomorphic adenoma, 50% in mucoepidermoid carcinoma, 63% in adenoid cystic carcinoma, and 50% in acinic cell carcinoma. The diagnostic accuracy differed among cytopathologists irrespective of periods after acquisition of board of pathologists. These results confirm that salivary gland neoplasm can be easily misdiagnosed in fine needle aspiration cytology and a great caution should be given in diagnosing the benign appearing salivary aspirates to avoid under-diagnosis of malignant neoplasm with low grade cytologic atypia.

• The Korean Journal of Cytopathology
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• v.17 no.1
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• pp.56-62
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• 2006

Salivary duct carcinoma (SDC) is a rare primary salivary gland malignancy characterized by histological features similar to those of ductal carcinomas of the breast. It is regarded as a high-grade malignancy associated with frequent local recurrences and early distant metastases that require aggressive treatment. The typical fine needle aspiration cytology (FNAC) findings in SDC include cellular smears showing tumor cells with eccentric pleomorphic nuclei and a granular cytoplasm arranged in flat sheets or cribriform patterns against a necrotic background. However, the presence of mucin-containing cells in SDC has been rarely described. We report the FNAC findings in a patient with histologically confirmed SDC that demonstrated numerous mucin-containing cells and was subsequently misdiagnosed as a high-grade mucoepidermoid carcinoma. Here we discuss the problems involved in distinguishing SDC from high-grade mucoepidermoid carcinoma on the basis of cytologic findings alone.

• The Korean Journal of Nuclear Medicine
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• v.30 no.1
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• pp.139-144
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• 1996

갈륨스캔은 여러 종류의 염증성 질환 및 종양을 발견하기 위해 사용되고 있다. 특히 림프종은 갈륨스캔에서 양성율이 비교적 높은 종양으로 알려져 있다. 하지만 기존의 평면 영상만으로는 작은 크기의 종괴나 다른 장기에 의해 가려져 있는 경우에 위음성 결과를 보일 수 있었다. 최근 단일광자 방출 전산화 단층촬영(SPCET)을 도입하여 평면영상에 비해 더 나은 공간해상력으로 많은 정보를 얻고 있다. 저자들은 비호지킨 림프종 환자 30명을 대상으로 갈륨스캔 평면영상과 SPECT 영상을 얻어 비교하였다. 병변의 부위별로 두경부, 흉부, 복부에서 평면영상의 예민도는 각각 71%, 73%, 81%였으며, SPECT 영상의 예민도는 91%, 93%, 96%였다. CT 등 방사선학적 검사소견과 임상소견을 기준으로 하였을 때 위음성율은 평면영상의 경우 24%, SPECT 6.5%였다. 장의 방사능으로 인한 섭취와 폐문부 및 침샘의 비대칭적 섭취로 인한 위양성례가 4예 있었다. 결론적으로 비호지킨 림프종의 진단 및 병기를 결정하는데 있어서 갈륨스캔이 유용하며, SPCET 영상을 얻음으로써 더 나은 해부학적 위치 및 정확한 범위를 보여 줄 수 있을 것으로 생각된다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.7
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• pp.565-568
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• 2017

Sjogren's syndrome is an autoimmune disease characterized by dry mouth and neutropenia. Although it does not commonly involve the central nervous system, Sjogren's syndrome sometimes affects small vessels through microangiopathic alterations. A 34-year-old woman was hospitalized for left upper quadrantanopia and a tingling sensation in the left hemibody. Brain magnetic resonance imaging revealed acute infarction in the right posterior cerebral artery territory. In laboratory tests, antinuclear (FANA2+) and anti-DNA antibodies (anti-SS-A (Ro)) were detected. Salivary gland scintigraphy revealed moderately decreasedexcretion of saliva. Based on these findings, we concluded she had Sjogren's syndrome. As in this patient, large vessel involvement in Sjogren's syndrome is far less common. Furthermore, it is difficult to administer antiplatelet drugsto patients with thrombocytopenia in Sjogren's syndrome. This is a case of the patient with Sjogren's syndrome that involved thrombocytopenia and large vessel invasion who was treated with antiplatelet drugs and hydroxychloroquine.

• Journal of Oral Medicine and Pain
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• v.32 no.4
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• pp.397-402
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• 2007

Sjogren's syndrome is a chronic autoimmune disorder of the exocrine glands with associated lymphocytic infiltrates of the affected glands. Primary SS presents alone as xerostomia, keratoconjunctivitis sicca and patotid gland enlargement, secondary SS occurs in connection with other autoimmune disorder such as rheumatitoid arthritis, systemic lupus erythematosus, or progressive systemic sclerosis. Among many other systemic complication, lymphoma is considered seriously. Patient with SS had a 44 times higher relative risk of lymphoma, and clinically identifiable lymphoma occurs in approximately 5% of patients with SS. So, patients with SS should be closely monitored. In dental office, diagnosis of SS is important in view of high risk of lymphoma. When a dentist diagnose and manage dry mouth, he or she should consider possibility of SS all the times and have knowledge of diagnostic criteria of SS.

• The Korean Journal of Nuclear Medicine Technology
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• v.13 no.1
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• pp.40-46
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• 2009

Purpose: A whole body scan using a radioactive iodine (I-131) for the patients with differentiated thyroid cancer is generally an useful method to detect the remnant thyroid tissue, recurred lesion or metastasis lesion after a surgery. The high dose treatment using the radioactive iodine recently tends to increase, and a hospitalization wait for the treatment has been delayed for several months. In this hospital, the treatable patients per week were increased in number through expanding a water-purifier tank and the examination time also increased as the I-131 whole body scan patients increased. Improvement for this problem, this research reduce the existing examination time and classifying the lesion's exact position intended to by fabricating and utilizing the transmission scan tool and an excellent resolution for whole body imaging. Materials and Methods: After conducting the whole body scan for patients who visited the department from February to July 2008 and received the I-131 whole body scan using the ORBITER Gamma Camera. A rail was installed in the examination table for the transmission scan for show a contour of surface area and then the transmission image was obtained and fused to the whole body scan through fabricating the tool to put a flood phantom of diluted 2 mCi $^{99m}Tc$-pertechnetate. Results: Fused image of I-131 whole body scan and the transmission scan had the excellent resolution to discriminate an oral cavity or salivary gland region, neck region's lesion, and metastasis region's position through a simple marking, and could reduce the examination time of 8~28 minutes because without the additional local image. Conclusions: In I-131 whole body scan, the transmission scan can accurately show a contour of surface area through the attenuation of radioactivity, and is useful to indicate the remnant thyroid tissue or metastasis lesion's position by improving the resolution through the fusion image with alreadyexecuted I-131 whole body scan. Also, because the additional local image is not necessary, it can reduce the time required for the examination. It will extensively apply to other clinical examinations to be helpful for identifying an anatomical position because it shows the contour of surface area.

• Journal of Radiation Protection and Research
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• v.40 no.2
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• pp.118-123
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• 2015

The frequency of diagnostic radiation examinations in medical institutions has recently increased to 220 million cases in 2011, and the annual exposure dose per capita was 1.4 mSv, 51% and 35% respectively, compared to those in 2007. The number of chest radiography was found to be 27.59% of them, the highest frequency of normal radiography. In this study, we developed a shielding device to minimize radiation exposure by shielding areas of the body which are unnecessary for image interpretation, during the chest radiography. And in order to verify its usefulness, we also measured the difference in entrance surface dose (ESD) and the absorbed dose, before and after using the device, by using an international standard pediatric (10 years) phantom and a glass dosimeter. In addition, we calculated the effective dose by using a Monte Carlo simulation-based program (PCXMC 2.0.1) and evaluated the reduction ratio indirectly by comparing lifetime attributable risk of cancer incidence (LAR). When using the protective device, the ESD decreased by 86.36% on average, nasal cavity $0.55{\mu}Sv$ (74.06%), thyroid $1.43{\mu}Sv$ (95.15%), oesophagus $6.35{\mu}Sv$ (78.42%) respectively, and the depth dose decreased by 72.30% on average, the cervical spine(upper spine) $1.23{\mu}Sv$ (89.73%), salivary gland $0.5{\mu}Sv$ (92.31%), oesophagus $3.85{\mu}Sv$ (59.39%), thyroid $2.02{\mu}Sv$ (73.53%), thoracic vertebrae(middle spine) $5.68{\mu}Sv$ (54.01%) respectively, so that we could verify the usefulness of the shielding mechanism. In addition, the effective dose decreased by 11.76% from $8.33{\mu}Sv$ to $7.35{\mu}Sv$ before and after wearing the device, and in LAR assessment, we found that thyroid cancer decreased to male 0.14 people (95.12%) and female 0.77 people (95.16%) per one million 10-year old children, and general cancers decreased to male 0.14 people (11.70%) and female 0.25 people (11.70%). Although diagnostic radiation examinations are necessary for healthcare such as the treatment of diseases, based on the ALARA concept, we should strive to optimize medical radiation by using this shielding device actively in the areas of the body unnecessary for the diagnosis.