• Title/Summary/Keyword: clinical diagnostic procedure

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Application and usefulness of Ultrasound sonography in dentistry (영상치의학에서 초음파영상의 진단과유용성)

  • Choi, Yong Suk;Seo, Yoo Kyung;Kang, Ju Hee;Oh, Song Hee;Kim, Gyu Tae;Hwang, Eui Hwan
    • The Journal of the Korean dental association
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    • v.55 no.11
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    • pp.778-788
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    • 2017
  • Ultrasound sonography(US) is used to evaluate various diseases of oral and maxillofacial region including salivary glands, soft tissue and jaw lesions because of easy accessibility and no hazard of ionizing radiation. Also, US can offer dynamic study showing real-time images during diagnostic or surgical procedure. US images provide accurate information about the internal features of lesions on the jaw prior to surgical treatment. Doppler images are used to visualize the vascular distribution of the lesions and to provide additional information to enhance diagnostic value. It is necessary to evaluate the diagnostic value of US and evaluate its usefulness by looking at clinical cases using US images. Therefore, US imaging may be recommended as an assistant image in evaluating jaw lesions. US images provided accurate information about the internal structure of lesions on the jaw prior to surgical treatment, and diagnostic value was enhanced by visualizing the vascular distribution of the lesion using doppler imaging. We report the protocol and suggest the effectiveness of US for various lesions and US-guided sialography.

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Fine Needle Aspiration Cytology of Palpable Lymph Nodes -A Single Institutional Experience of 1,346 Cases- (촉지 림프절의 세침흡인 세포검사 - 단일 기관의 1,346예 경험 -)

  • Shin, Dong-Hoon;Kim, Jee-Yeon;Kang, Hyun-Jeong;Kim, Ick-Doo;Sol, Mee-Young;Choi, Kyung-Un
    • The Korean Journal of Cytopathology
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    • v.18 no.2
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    • pp.126-132
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    • 2007
  • The aim of this study was to evaluate the diagnostic value of fine needle aspiration cytology (FNAC) for the assessment of palpable enlarged lymph nodes. The authors reviewed the results of 1,346 FNACs of palpable enlarged lymph nodes performed at Pusan National University Hospital from 1998 to 2004. Of the 1,346 cases, 1,265 (94.0%) were satisfactory and 81 (6.0%) unsatisfactory. Cytologic diagnoses were judged in 488 cases, based on subsequent histologic diagnoses, clinical follow up, or both. Global results for all malignancies (lymphoid and non-lymphoid neoplasms) based on cases with final diagnoses, showed a sensitivity of 87.4% and a specificity of 98.7%. The overall diagnostic accuracy was 93,2%, and the false negative rate reduced from 12,6% to 7,3% when lymphomatous cases were excluded. The annual data for this period showed that the number of diagnostic lymph node biopsies and the rate of inadequately sampled material markedly decreased. Gene rearrangement studies for IgH and TCR ${\gamma}$ were helful in 30 cases. FNAC is a useful initial diagnostic procedure for the evaluation of palpable enlarged lymph nodes. However, the technique should be assisted by the appropriate ancillary studies and by proper interpretation by a cytopathologist.

22-gauge Co-Cr versus stainless-steel Franseen needles for endoscopic ultrasound-guided tissue acquisition in patients with solid pancreatic lesions

  • Yuki Tanisaka;Masafumi Mizuide;Akashi Fujita;Ryuhei Jinushi;Rie Shiomi;Takahiro Shin;Kei Sugimoto;Tomoaki Tashima;Yumi Mashimo;Shomei Ryozawa
    • Clinical Endoscopy
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    • v.57 no.2
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    • pp.237-245
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    • 2024
  • Background/Aims: Endoscopic ultrasound-guided tissue acquisition (EUS-TA) using Franseen needles is reportedly useful for its high diagnostic yield. This study compared the diagnostic yield and puncturing ability of EUS-TA using 22-gauge cobalt-chromium (CO-Cr) needles with those of stainless-steel Franseen needles in patients with solid pancreatic lesions. Methods: Outcomes were compared between the 22-gauge Co-Cr Franseen needle (December 2019 to November 2020; group C) and stainless-steel needle (November 2020 to May 2022; group S). Results: A total of 155 patients (group C, 75; group S, 80) were eligible. The diagnostic accuracy was 92.0% in group C and 96.3% in group S with no significant intergroup differences (p=0.32). The rate of change in the operator (from training fellows to experts) was 20.0% (15/75) in group C and 7.5% (6/80) in group S. Stainless-steel Franseen needles showed less inter-operator difference than Co-Cr needles (p=0.03). Conclusions: Both Co-Cr and stainless-steel Franseen needles showed high diagnostic ability. Stainless-steel Franseen needles are soft and flexible; therefore, the range of puncture angles can be widely adjusted, making them suitable for training fellows to complete the procedure.

Diagnostic imaging of isolated splenic torsion in two dogs (개 비장염전의 진단영상 2례)

  • Choi, Jihye;Kim, Hyunwook;Kim, Jinkyung;Jang, Jaeyoung;Kim, Junyoung;Yoon, Junghee
    • Korean Journal of Veterinary Research
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    • v.47 no.3
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    • pp.349-356
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    • 2007
  • Isolated splenic torsion is a rare disease, which is usually produced in deep-chest large breed dogs. A five-year old Pitbull terrier and a four-year old Yorkshire terrier were diagnosed as isolated splenic torsion with chronic form. Leukocytosis, anemia and elevated hepatic enzyme level were found in blood test and a large amount of ascites was observed. Abdominal radiography revealed splenomegaly and ascites and ultrasonography showed diffuse hypoechoic change of spleen in case 1 and hyperechoic change of spleen with focal hypoechoic regions in case 2, thromboembolism of splenic vein and abnormal direction of spleen. To identify the underlying disease of isolated splenic torsion, the histopathologic examination of excised spleen is essential and splenic neoplasia was found in case 2. Chronic isolated splenic torsion shows nonspecific clinical signs and laboratory results. Through diagnostic procedure, particularly ultrasonography, prompt diagnosis may be achieved and improve the prognosis of the patient.

Multimodal Digital Photographic Imaging System for Total Diagnostic Analysis of Skin Lesions: DermaVision-Pro (다모드 디지털 사진 영상 시스템을 이용한 피부 손상의 진단적 분석에 대한 연구 : DermaVision-Pro)

  • Bae, Young-Woo;Kim, Eun-Ji;Jung, Byung-Jo
    • Proceedings of the KIEE Conference
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    • 2008.10b
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    • pp.153-154
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    • 2008
  • Digital photographic analysis is currently considered as a routine procedure in clinic because periodic follow-up examinations can provide meaningful information for diagnosis. However, it is impractical to separately evaluate all suspicious lesions with conventional digital photographic systems, which have inconsistent characteristics of the environmental conditions. To address the issue, it is necessary for total diagnostic evaluation in clinic to integrate conventional systems. Previously, a multimodal digital photographic imaging system, which provides a conventional color image, parallel and cross polarization color images and a fluorescent color image, was developed for objective evaluation of facial skin lesions. Based on our previous study, we introduce a commercial product, "DermaVision-PRO," for routine use in clinical application in dermatology. We characterize the system and describe the image analysis methods for objective evaluation of skin lesions. In order to demonstrate the validity of the system in dermatology, sample images were obtained from subjects with various skin disorders, and image analysis methods were applied for objective evaluation of those lesions.

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Study of The Diagnostic Indicators of Yin-Deficiency Pattern Using by AHP (AHP 분석을 이용한 음허 설문항목의 중요도 부여)

  • Kim, Kitae;Ko, Heung;Shin, Seonmi;Jung, Jinhwa
    • The Journal of the Society of Korean Medicine Diagnostics
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    • v.18 no.3
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    • pp.175-186
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    • 2014
  • The purpose of this study is to give priority in Yin-deficient questionnaire items. if adequate priority is given, clinical judgment and questionnaire of the results is expected to be similar. The AHP is a systematic procedure for analyzing the elements of any problem hierarchically. Based on survey of expertise, as series of pairwise comparison judgements is performed to evaluate the various elements in the hierarchy. We are expected to use the AHP analysis that would apply to oriental doctor's diagnostic process analysis. In this study, korean medical doctors experienced over 5 years was included. Results given the importance to Yin-deficient questionnaire items, Results given the importance to the questionnaire items, the most important item was Irritable fever on the five Hearts, the second was tidal fever.

Clinical Features of the Midgut Volvulus in Children (소아 중장 염전의 임상 양상)

  • Kim, Hyun-Ah;Choi, Kum-Ja
    • Advances in pediatric surgery
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    • v.10 no.2
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    • pp.112-116
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    • 2004
  • Midgut volvulus secondary to intestinal malrotation usually presents within the first month of life. Diagnostic delay may result in midgut infarction and mortality. In this retrospective study, we review seventeen cases of midgut volvulus to assess the importance of early recognition for midgut volvulus in pediatric patients of any age.. These patients were diagnosed as having a midgut volvulus by operation at Ewha Womans University Hospital. Eleven patients (64.7 %) were less than 1 month of age, and fifteen were boys (88.2 %). The mean gestational age was 38.3 weeks and the birth weight was 3.1 kg. Eight patients (47.1 %) had one or more combined anomalies such as heart malformation, brain ischemia, Down's syndrome or duodenal atresia. Vomiting was the most common symptom. Only thirteen patients underwent preoperative diagnostic procedures; 13 abdominal sonography demonstrated the whirlpool sign in 8 patients, upper gastrointestinal tract roentgenography showed a cork-screw pattern in 7 patients, and barium enema or small bowel series demonstrated positive findings in 7 patients. A Ladd's procedure was was formed on all patients.. There was no mortality or severe morbidity such as short bowel syndrome. Midgut volvulus should be included in the differential diagnosis in any infant or child who presents with the symptoms of acute abdomen, especially with vomiting.

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Impression procedures for removable partial dentures (가철성 국소의치 제작을 위한 인상채득)

  • Heo, Yu-Ri;Son, Mee-Kyoung
    • Journal of Dental Rehabilitation and Applied Science
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    • v.30 no.2
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    • pp.152-158
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    • 2014
  • To fabricate removable partial denture which provide patient's comfort and maintain oral health, cast fabrication which reproduce anatomical and functional state of mouth is needed. Diagnostic cast and master cast are produced through the process of preliminary impression and final impression taking. Both of remaining teeth and edentulous area should be well taken in removable partial denture impression. According to the supporting type of partial denture, impression material and method can be changed. Therefore, understanding of impression procedure is essential for the accurate clinical application.

Liquid Biopsy: An Emerging Diagnostic, Prognostic, and Predictive Tool in Gastric Cancer

  • Hye Sook Han;Keun-Wook Lee
    • Journal of Gastric Cancer
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    • v.24 no.1
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    • pp.4-28
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    • 2024
  • Liquid biopsy, a minimally invasive procedure that causes minimal pain and complication risks to patients, has been extensively studied for cancer diagnosis and treatment. Moreover, it facilitates comprehensive quantification and serial assessment of the whole-body tumor burden. Several biosources obtained through liquid biopsy have been studied as important biomarkers for establishing early diagnosis, monitoring minimal residual disease, and predicting the prognosis and response to treatment in patients with cancer. Although the clinical application of liquid biopsy in gastric cancer is not as robust as that in other cancers, biomarker studies using liquid biopsy are being actively conducted in patients with gastric cancer. Herein, we aimed to review the role of various biosources that can be obtained from patients with gastric cancer through liquid biopsies, such as blood, saliva, gastric juice, urine, stool, peritoneal lavage fluid, and ascites, by dividing them into cellular and acellular components. In addition, we reviewed previous studies on the diagnostic, prognostic, and predictive biomarkers for gastric cancer using liquid biopsy and discussed the limitations of liquid biopsy and the challenges to overcome these limitations in patients with gastric cancer.

A Method for Simultaneous Measurement of Air Kerma, Half Value Layer and Tube Potential in Quality Control Procedure of Diagnostic x ray units

  • Katoh, Tsuguhisa;Saitoh, Hidetoshi;Ohtani, Hiroki;Negishi, Tooru;Myojoyama, Atsushi;Ohno, Yuusuke;Sasaki, Takehito
    • Proceedings of the Korean Society of Medical Physics Conference
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    • 2002.09a
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    • pp.294-297
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    • 2002
  • For the quality control procedure of diagnostic x ray units, a method for simultaneous measurement of air kerma, half value layer and tube potential was developed utilizing a computed radiography system for intraoral radiography and film badge case. The response of average pixel values under the windows were calibrated by x rays generated at tube potentials from 40 to 140 kV with filtration from 1.5 to 3.7 mmAl. The calibration curves for half value layer and tube potential were derived as functions of attenuation factors by the 1.4 mmAl filter and the 0.2 mmCu filter. The energy dependency of the open window response was corrected by the calibration factor as a function of the attenuation factor by the 1.4 mmAl filter. The uncertainty of the estimated half value layer, tube potential and air kerma were 0.2 mmAl, 3.6 % and 5 %, respectively. It was thus suggested that this system could be applied to quality control program to detect the variation of working condition of x ray units in clinical use.

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