• Journal of radiological science and technology
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• v.47 no.2
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• pp.97-105
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• 2024

The examination needle used in ultrasound biopsy is a medical device used to determine whether there is an abnormality in the tissue. Typically, stainless steel is the standard material used for such needles; however, this study wanted to identify a material that could better enhance sound compared to traditional stainless steel. In this study, six types of needle materials available with the biopsy gun were inserted into pork and ultrasound images according to the curved probe and linear probe were evaluated using ultrasound equipment. The findings revealed significant improvements in ultrasound acoustic enhancement with alternative materials compared to stainless steel (p<0.05). The results regarding the depth of each ultrasound image using the curved probe showed that tungsten and brass had high sound enhancement(p<0.05), while with the linear probe, sound enhancement was high in brass, pla, aluminum, and copper(p<0.05). Due to these results, the previously used stainless needle showed lower ultrasound acoustic enhancement than the five types of materials being compared. Consequently, the outcomes of this study provide valuable insights for the development of new needle technologies aimed at minimizing patient risks and improving diagnostic accuracy.

• Journal of the Korean Society of Radiology
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• v.10 no.3
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• pp.201-206
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• 2016

Social interest in breast cancer has increased. The most basic exams for diagnosis include breast X-ray and breast ultrasound. In particular, breast microcalcification requires histological diagnosis, and breast microcalcification biopsy is commonly performed. Therefore, this study aimed to analyze and assess X-ray guided biopsy (needle localized open biopsy) and ultrasound guided biopsy (sono guided core needle biopsy), which are basics in diagnosis of microcalcification. Targeting 241 cases in which magnification mammography was performed for patients who visited the hospital due to breast microcalcification, age distribution and the location of lesions were analyzed in X-ray guided biopsy and ultrasound guided biopsy. By classifying exams performed after magnification mammography, the frequencies of X-ray guided biopsy and ultrasound guided biopsy were analyzed, and malignant and benign results were confirmed. The results showed that 64 cases(26.6%) were X-ray guided biopsy, which was 5.4 times higher than 12 cases(4.9%) of ultrasound guided biopsy. Due to development of ultrasound equipments, stereotactic vacuum-assisted biopsy, etc. the methods of histological diagnosis of microcalcification have become diverse, but when considering characteristics and limitations of each exam, X-ray guided biopsy is thought to be most accurate and useful.

• Journal of radiological science and technology
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• v.38 no.3
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• pp.213-220
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• 2015

This research was study the accuracy of three-dimensional stereotactic breast biopsy, using a core Needle Biopsy and to assess the accuracy of Stereotactic biopsy and Sono guided biopsy. Using Stereotactic QC phantom to measure the accuracy of the 3D sterotactic machine. CT Scan and equipment obtained in the measured X, Y, Z and compares the accuracy of the length. Using Agar power phantom compare the accuracy of the 3D sterotactic machine and 2D ultrasound machine. Z axis measured by the equipment to compare the accuracy and reliability. Check the accuracy by using visual inspection and Specimen Medical application phantom. The accuracy of the 3D sterotactic machine measured by Stereotactic QC phantom was 100%. Accuracy as compared to CT, all of X, Y, Z axis is p > 0.05. The accuracy of the two devices was 100% as measured by Agar powder phantom. There was no difference between t he t wo d evices as C T and p > 0.05. 3D sterotactic machine of the ICC was 0.954, 2D ultrasound machine was 0.785. 2D ultrasound machine was different according to the inspector. Medical application phantom experiments in 3D sterotactic machine could not find the Sliced boneless ham. 2D ultrasound machine has not been able to find a small chalk powder group. The reproducibility of the three-dimensional stereotactic breast biopsy was better than effect of Sono guided biopsy.

• Archives of Plastic Surgery
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• v.35 no.1
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• pp.62-66
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• 2008

Purpose: Axillary osmidrosis is a distressing disorder characterized by unpleasant odor from axillary area and it is mainly associated with apocrine glands but also associated with eccrine glands. For surgical treatment of osmidrosis, recently ultrasound assisted liposuction(UAL) had been performed for many patients. According to the recent studies about ultrasound assisted liposuction for the treatment of osmidrosis, histologic studies about apocrine gland had been applied for 35 cases, but there were rare mention about eccrine gland and the relationship between two glands. The purpose of this article is to evaluate the effect of ultrasound assisted liposuction for the treatment of axillary osmidrosis on apocrine and eccrine glands. Methods: From January 2004 to January 2007, 35 patients underwent ultrasound assisted liposuction for the treatment of osmidrosis and 5 patients underwent histologic studies. Histologic examinations were performed before and after ultrasound assisted liposuction and each biopsy was performed in central axillary area. The volume ratio of both glands, presence of degeneration were examined. And in aspirates, distribution and density of both glands and their morphological changes were examined. Results: Preoperative biopsy results showed average volume ratio of apocrine glands to eccrine glands was 65 : 35. According to the postoperative biopsy results, the volume of apocrine glands in dermis were significantly reduced and glands were degenerated, but the volume of eccrine glands were slightly reduced and glands were mildly damaged. And the average volume ratio of two glands was 20 : 80. According to biopsy results of aspirates, the volume ratio of two glands was 85 : 15 and apocrine glands had significantly greater proportion. Conclusion: By comparison of each biopsy result, apocrine glands were more significantly reduced and degenerated than eccrine glands in all 5 cases. However, further studies with large sample sizes and close examinations are required.

• Tuberculosis and Respiratory Diseases
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• v.87 no.3
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• pp.282-291
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• 2024

The increasing incidence of incidental pulmonary nodules necessitates effective biopsy techniques for accurate diagnosis and treatment planning. This paper reviews the widely used advanced bronchoscopic techniques, such as radial endobronchial ultrasound-guided transbronchial lung biopsy, electromagnetic navigation bronchoscopy, and the cutting-edge robotic-assisted bronchoscopy. In addition, the cryobiopsy technique, which can enhance diagnostic yield by combination with conventional biopsy tools, is described for application to peripheral pulmonary lesions and mediastinal lesions, respectively.

• 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.

• Journal of the Korean Society of Radiology
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• v.84 no.6
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• pp.1233-1243
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• 2023

Percutaneous ultrasound-guided biopsy is useful for the pathologic confirmation of variable body lesions to establish diagnostic and therapeutic approaches. However, deep pelvic lesions are a challenge for pathologic diagnoses because of the presence of the bowel, bladder, major vessels, and pelvic bones which make a percutaneous approach difficult and dangerous. In female, the vagina is elastic and near the pelvic internal organs. Therefore, transvaginal ultrasound may serve as an effective and safe guide for the pathologic diagnosis of pelvis lesions. This review aimed to introduce the indications for, and the method of transvaginal ultrasoundguided biopsy, and to describe the reported diagnostic accuracy and safety.

• Korean Journal of Bronchoesophagology
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• v.6 no.2
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• pp.164-171
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• 2000

Background and Objectives： Necrotizing lymphadenitis or Kikuchi's disease is characterized by cervical lymphadenopathy of unknown etiology with unique histologic findings in young female patients. The importance of this disease lies in the fact that it can be easily misdiagnosed as malignant lymphoma, hence, clinicians need to aware of this disease entity. The purpose of this study is to report the clinicopathologic findings, radiographic findings, and many laboratory tests in order to contribute to the diagnosis and treatment of necrotizing lymphadenitis. Materials and Methods： We evaluated 31 patients, who were diagnosed as necrotizing lymphadenitis by excisional biopsy or fine needle aspiration cytology or ultrasound guided 18G cutting needle biopsy, retrospectively. Result : The median age was 24.8 years (range 12 to 43 years) and the male to female ratio was 1 : 2.4(9：22), with 14 females (45.1%) under 30 years. The common chief complaints were neck mass, easy fatigue and fever. Lymph node enlargement was limited to the cervical area in most cases (28cases : 90.3%). The involved lymph nodes were usually multiple (20cases : 64.5%), unilateral (26cases 83.9%) and small sized. Leukopenia (19cases : 61.3%) and elevation of ESR (18cases : 58.1%) appeared most frequently in the abnormal laboratory data. These symptoms will be gone spontaneoulsy without any specific treatment in several weeks or months. Conclusion : We should consider open biopsy or fine needle aspiration cytology or ultrasound guided cutting needle biopsy with lymph node in patients who have cervical lymphadenopathy with easy fatigue and fever, especially young women to exclude other conditions such as malignant lymphoma and tuberculosis, etc.

• Journal of the Korean Society of Radiology
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• v.15 no.7
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• pp.1057-1064
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• 2021

This study was conducted by simulating the same environmental conditions as the actual biopsy to observe the change in formaldehyde(HCHO) concentration in the indoor air during ultrasound guided biopsy. Changes in HCHO concentration in the room were measured by successively performing five steps: sealing the ultrasound room, ventilation, opening formalin containers, sealing formalin containers, and re-ventilating. Trends of measured HCHO concentration changes were visualized using graphs. As a result of analyzing the consistency of the concentration change values measured three times using the intra-class correlation coefficient, it was found to be 0.989, which was statistically significant(p<0.05). Based on the results of this study, we hope that medical workers working in the HCHO exposure environment of the field of radiology part will improve their awareness of the necessity of exposure management at work, and actively discuss the establishment of an environment for exposure control and preparation of countermeasures.

• Korean Journal of Radiology
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• v.21 no.9
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• pp.1087-1094
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• 2020

Transrectal ultrasound (TRUS)-guided systematic biopsy, the current gold standard for the detection of prostate cancer, suffers from low sensitivity for clinically significant cancer. The use of diagnostic multiparametric MRI has increased the relevance of targeted biopsy techniques such as MRI-TRUS fusion biopsy and direct (in-bore) MRI-guided biopsy, which have higher detection rate for clinically significant cancer. Although primarily used in patients who remain at high clinical suspicion for prostate cancer despite a negative systematic biopsy, with the increasing use of upfront diagnostic MRI, these biopsies are expected to replace routine systematic biopsies. This pictorial essay aims to enhance our understanding of the concepts of these biopsy techniques so that they can be performed safely and provide maximum diagnostic yield.