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  1. AU="Eun Kyung Khil"
  2. AU="Mellaerts, B."
  3. AU="Xiang Yao"
  4. AU="Lan, Tao"
  5. AU="Arnaud Rossard"
  6. AU="Huang, Pau-Yi"
  7. AU="Gangxian He"
  8. AU="Stallings, Amy P"
  9. AU="Hardy, Mark A"
  10. AU="Kotrulja, Lena"
  11. AU="Meeremans, Marguerite"
  12. AU="Chen, Yanguang"
  13. AU="Sakizono, Kenji"
  14. AU="Romero-Daza, Nancy"
  15. AU="Jean-Pierre Thomé"
  16. AU=Narayanan Naveen
  17. AU=Azam Faizul
  18. AU="Özdog˘ru, Asil Ali"
  19. AU="Emami, Hajar"
  20. AU="Cimino, R."
  21. AU="Judith R. Stabel"
  22. AU="Takeuchi, Kazuto"
  23. AU="Mirzaei, Samira"
  24. AU="Carolina Salgado"
  25. AU="Mate, Sebastian"
  26. AU="Hou, Tian-Yang Liu"
  27. AU=Nino Gustavo
  28. AU="Lydon, Myra"
  29. AU="Jain, Nibha"
  30. AU="David A Schwartz"
  31. AU="Swart, Jonathan"
  32. AU="Karol, Agnieszka"
  33. AU="Reilly, Brittni"
  34. AU="Arfaatabar, Maryam"
  35. AU="Kumar Pandey, Anand"

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  1. Artikel ; Online: Histiocytic sarcoma mimicking localized tenosynovial giant cell tumor in the pediatric foot

    Eun Kyung Khil, MD / Jang Gyu Cha, MD, PhD / Yu Sung Yoon, MD / Hee Kyung Kim, MD, PhD

    Radiology Case Reports, Vol 19, Iss 3, Pp 1149-

    A rare case report with MRI Findings

    2024  Band 1153

    Abstract: We present a rare case of histiocytic sarcoma (HS) occurring in the foot of a 12-year-old male, initially misdiagnosed as localized tenosynovial giant cell tumor (TSGCT). HS is an exceptionally uncommon hematologic malignant neoplasm, with its occurrence ...

    Abstract We present a rare case of histiocytic sarcoma (HS) occurring in the foot of a 12-year-old male, initially misdiagnosed as localized tenosynovial giant cell tumor (TSGCT). HS is an exceptionally uncommon hematologic malignant neoplasm, with its occurrence in children and extranodal sites being even rarer. To our knowledge, this is the first reported case of extranodal HS in the foot, emphasizing comprehensive MRI findings. Initially, the patient was diagnosed with TSGCT based on histological results following surgical resection. However, after recurrence and subsequent surgical resection, histological and immunochemical analyses led to a revised diagnosis of HS. This report focuses on the MRI findings of HS, highlighting the distinctions from localized TSGCT. While both conditions share histopathological similarities, immunohistochemical tests are crucial for accurate diagnosis. The report underscores the importance of differentiating HS for appropriate treatment.
    Schlagwörter Histiocytic sarcoma ; Tenosynovial giant cell tumor ; Ultrasound ; MRI ; Soft tissue tumor ; Pediatric ; Medical physics. Medical radiology. Nuclear medicine ; R895-920
    Thema/Rubrik (Code) 610
    Sprache Englisch
    Erscheinungsdatum 2024-03-01T00:00:00Z
    Verlag Elsevier
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  2. Artikel ; Online: High-Resolution Finger MRI

    Kyoung Yeon Lee / Jiwon Rim / Jung-Ah Choi / Eun Kyung Khil

    Journal of the Korean Society of Radiology, Vol 84, Iss 5, Pp 1031-

    What Should You Look for in Trauma of the Fingers?

    2023  Band 1046

    Abstract: The fingers are among the most commonly injured structures in traumatic injuries resulting from sports and work. Finger injuries encompass a broad spectrum of injuries to bone and soft tissues, including tendons, ligaments, and cartilage. The high ... ...

    Abstract The fingers are among the most commonly injured structures in traumatic injuries resulting from sports and work. Finger injuries encompass a broad spectrum of injuries to bone and soft tissues, including tendons, ligaments, and cartilage. The high resolution of 3T MRI with dedicated surface coils allows for optimal assessment of the intricate soft tissue structures of the fingers. There have been several reports on detailed MRI features of the basic anatomy and common pathological findings of the finger and hand. Understanding the normal anatomy and familiarization with common traumatic lesions of the ligaments, tendons, and pulleys of the fingers on high-resolution MRI will allow radiologists to perform accurate preoperative evaluations of traumatic hand lesions. The purpose of this study is to review the normal hand anatomy and common traumatic lesions of the finger on high-resolution MRI and correlate them with surgical findings.
    Schlagwörter fingers ; anatomy ; finger injuries ; diagnostic imaging ; magnetic resonance imaging ; Medical physics. Medical radiology. Nuclear medicine ; R895-920
    Thema/Rubrik (Code) 616
    Sprache Englisch
    Erscheinungsdatum 2023-09-01T00:00:00Z
    Verlag The Korean Society of Radiology
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  3. Artikel ; Online: A modified MRI protocol for the increased detection of sacrococcygeal fractures in patients with thoracolumbar junction fractures

    Eun Kyung Khil / Il Choi / Jung-Ah Choi / Young Woo Kim

    Scientific Reports, Vol 11, Iss 1, Pp 1-

    2021  Band 10

    Abstract: Abstract This study aimed to identify concurrent thoracolumbar junction (TLJ) and sacrococcygeal (SC) fractures using a modified MRI protocol and analyze the risk factors associated with tandem fractures. We retrospectively investigated patients with MRI- ...

    Abstract Abstract This study aimed to identify concurrent thoracolumbar junction (TLJ) and sacrococcygeal (SC) fractures using a modified MRI protocol and analyze the risk factors associated with tandem fractures. We retrospectively investigated patients with MRI-confirmed TLJ fractures from January 2017 to March 2020. Patients were divided into two study groups: study 1 with a modified MRI protocol and study 2 with a routine protocol. The modified protocol included an extended field of view of sagittal scans in L-spine MRI covering the full SC spine. In study 1, frequency of concurrent TLJ and SC fractures was investigated. And we analyzed risk factors and compared CT and MRI for detecting SC fractures. In study 2, co-occurrence of both fractures was investigated. A total of 176 and 399 patients with TLJ fractures were enrolled in study 1 and 2, then SC fractures were identified in 53 (30.14%) and 36 patients (9.02%), respectively. An axial loading trauma mechanism was a significant risk factor (Odds ratio 7.0, p < 0.001), and MRI was more sensitive than CT in detecting SC fractures (p < 0.002). Thus, a modified MRI protocol was useful to detect the high occurrence of SC fractures in TLJ fractures, which concurrent fractures increased by an axial loading mechanism.
    Schlagwörter Medicine ; R ; Science ; Q
    Thema/Rubrik (Code) 610
    Sprache Englisch
    Erscheinungsdatum 2021-03-01T00:00:00Z
    Verlag Nature Portfolio
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  4. Artikel ; Online: Deep learning system for automated detection of posterior ligamentous complex injury in patients with thoracolumbar fracture on MRI

    Sang Won Jo / Eun Kyung Khil / Kyoung Yeon Lee / Il Choi / Yu Sung Yoon / Jang Gyu Cha / Jae Hyeok Lee / Hyunggi Kim / Sun Yeop Lee

    Scientific Reports, Vol 13, Iss 1, Pp 1-

    2023  Band 12

    Abstract: Abstract This study aimed to develop a deep learning (DL) algorithm for automated detection and localization of posterior ligamentous complex (PLC) injury in patients with acute thoracolumbar (TL) fracture on magnetic resonance imaging (MRI) and evaluate ...

    Abstract Abstract This study aimed to develop a deep learning (DL) algorithm for automated detection and localization of posterior ligamentous complex (PLC) injury in patients with acute thoracolumbar (TL) fracture on magnetic resonance imaging (MRI) and evaluate its diagnostic performance. In this retrospective multicenter study, using midline sagittal T2-weighted image with fracture (± PLC injury), a training dataset and internal and external validation sets of 300, 100, and 100 patients, were constructed with equal numbers of injured and normal PLCs. The DL algorithm was developed through two steps (Attention U-net and Inception-ResNet-V2). We evaluate the diagnostic performance for PLC injury between the DL algorithm and radiologists with different levels of experience. The area under the curves (AUCs) generated by the DL algorithm were 0.928, 0.916 for internal and external validations, and by two radiologists for observer performance test were 0.930, 0.830, respectively. Although no significant difference was found in diagnosing PLC injury between the DL algorithm and radiologists, the DL algorithm exhibited a trend of higher AUC than the radiology trainee. Notably, the radiology trainee's diagnostic performance significantly improved with DL algorithm assistance. Therefore, the DL algorithm exhibited high diagnostic performance in detecting PLC injuries in acute TL fractures.
    Schlagwörter Medicine ; R ; Science ; Q
    Thema/Rubrik (Code) 610
    Sprache Englisch
    Erscheinungsdatum 2023-11-01T00:00:00Z
    Verlag Nature Portfolio
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  5. Artikel ; Online: Gray Ramus Communicans Nerve Block for Acute Pain Control in Vertebral Compression Fracture

    Dou-Young Park / Il Choi / Tae-Gyum Kim / Woo-Jae Kim / Il-Young Shin / Eun-Kyung Khil

    Medicina, Vol 57, Iss 744, p

    2021  Band 744

    Abstract: Background and Objectives : The current options for acute pain control of vertebral compression fracture include hard brace, vertebroplasty, early surgery, and analgesic injection. We hypothesize that the gray ramus communicans nerve block (GRNB) ... ...

    Abstract Background and Objectives : The current options for acute pain control of vertebral compression fracture include hard brace, vertebroplasty, early surgery, and analgesic injection. We hypothesize that the gray ramus communicans nerve block (GRNB) controls the acute pain experienced during vertebral compression fractures. This study assessed the time course of pain control after injection and evaluated the risk factors affecting pain control failure. Materials and methods: Sixty-three patients (24 male, 66.19 ± 15.17 y) with a thoracolumbar vertebral fracture at the T10-L5 spine, who presented to our hospital from November 2018 to October 2019, were included in this retrospective cohort study. GRNB was performed within 1 week of the trauma. The patients were followed up on days 3, 14, 30, 90, and 180 and assessed with the serial visual analog scale (VAS, resting and motion), Oswestry Low Back Disability (ODI) questionnaire, and Roland–Morris Disability Questionnaire (RDQ). The failure group was defined by the need for an additional block or cement injection after a single GRNB. The failure group’s risk factors, such as body mass index, initial thoracolumbar injury classification and severity score, Kummel’s disease, age, bone marrow density (BMD), and underlying disease, were analyzed. Results : The motion VAS score improved from preoperative to three months post-procedure, but the resting VAS was affected by the procedure for only three days. The quality of life index improved at postoperative six months. A lower BMD was the only risk that affected treatment failure in the logistic regression analysis ( p = 0.0038). Conclusion : The effect of GRNB was maintained even at three months after trauma based on motion VAS results. The only risk factor identified for GRNB failure was lower BMD.
    Schlagwörter osteoporosis ; compression fracture ; bone marrow density ; serial visual analog scale ; Oswestry Low Back Disability Questionnaire ; Roland–Morris Disability Questionnaire ; Medicine (General) ; R5-920
    Thema/Rubrik (Code) 616
    Sprache Englisch
    Erscheinungsdatum 2021-07-01T00:00:00Z
    Verlag MDPI AG
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  6. Artikel ; Online: Comparison of Metal Artifact Reduction for Orthopedic Implants versus Standard Filtered Back Projection

    Jiwon Rim / Jung-Ah Choi / Seun Ah Lee / Eun Kyung Khil

    대한영상의학회지, Vol 78, Iss 1, Pp 22-

    Value of Postoperative CT after Hip Replacement

    2018  Band 29

    Abstract: Purpose: To evaluate Metal Artifact Reduction for Orthopedic Implants (O-MAR, Philips Healthcare) technique compared with standard filtered back projection (SFBP) technique on post-operative hip CT regarding image noise reduction and detection of post- ... ...

    Abstract Purpose: To evaluate Metal Artifact Reduction for Orthopedic Implants (O-MAR, Philips Healthcare) technique compared with standard filtered back projection (SFBP) technique on post-operative hip CT regarding image noise reduction and detection of post-operative complications. Materials and Methods: Fifty-six hip CT scans after hip replacement with SFBP technique and O-MAR application were retrospectively reviewed. Region of interests (ROIs) were drawn at levels wherein acetabular cup and femoral head were largest at anterior and posterior acetabula, gluteus maximus muscle, subcutaneous fat adjacent to gluteus maximus muscle, and in area adjacent to prosthesis stem wherein lesser trochanter is largest. Hounsfield units (HU) were measured to evaluate artifact quantitatively; mean and standard deviations (SDs) calculated and compared. Periprosthetic complications were evaluated, and visibility rated between two reconstruction techniques; 1-SFBP better, 2–SFBP same as O-MAR, 3–O-MAR better. Results: Average HU was significantly lower in O-MAR at posterior acetabulum, gluteus maximus muscle, and subcutaneous fat (p < 0.05). SD for HU was significantly lower in O-MAR at all ROIs (p < 0.05). Mean visibility of periprosthetic complications was 2.0, so equivalent. Conclusion: Reconstruction with O-MAR technique in post-operative hip CT scans after hip replacement yielded statistically significant decrease in image noise. However, visibility of periprosthetic complications was not impacted by reconstruction technique.
    Schlagwörter tomography ; x-ray computed ; metals ; artifacts ; prosthesis ; hip ; Medical physics. Medical radiology. Nuclear medicine ; R895-920
    Sprache Englisch
    Erscheinungsdatum 2018-01-01T00:00:00Z
    Verlag The Korean Society of Radiology
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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