Showing 9 Abstracts.
Developmental dysplasia of the hip (DDH) is the leading cause of hip disease in infants. AVN is a potential complication of treatment for DDH, which is traditionally diagnosed on follow-up pelvic radiographs. But classic radiographic findings of AVN may be radiographically-occult for months to years after surgery. To investigate the performance of gadolinium-enhanced magnetic resonance imaging (MRI) for predicting avascular necrosis (AVN) of the femoral head following surgical hip reduction for developmental dysplasia of the hip (DDH) using qualitative and quantitative methods. Read More
Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020
Authors: Nguyen Jie, Barrera Christian, Back Susan, Patel Maya, Sankar Wudbhav
Scaphoid fractures are well-recognized in adults where delayed diagnosis and treatment of displaced or rotated fragments can produce avascular necrosis and long-term morbidity. In children, scaphoid fractures are uncommon, particularly in the skeletally immature, with an estimated incidence of 11 per 100,000, and there is a relative paucity of published literature on its imaging characteristics and clinical prognosis. Therefore, the purpose of this study was to investigate imaging findings, fracture locations, and the clinical outcomes of scaphoid fractures in pre-teen children. Read More
Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020
Authors: Nguyen Michael, Hong Shijie, Sze Alyssa, Chang Benjamin, Nguyen Jie
Mensicocapsular injury (ramp lesion) occurs in 9-17% of ACL tears. These injuries are a risk factor for instability and failure following ACL reconstruction. The far peripheral location has contributed to under-diagnosis during routine anterior-approach arthroscopy. While there has been increasing interest in the identification and treatment of these lesions in adults, there is a paucity of published data on children and the proposed MRI features lack specificity. Therefore, the purpose of this study was to investigate the performance of MRI criteria for identifying ramp lesions in children. Read More
Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020
Authors: Nguyen Jie, Bram Joshua, Ganley Theodore, Lawrence John, Patel Maya, Ho-fung Victor
The tibiotalar joint is the third most common location for osteochondritis dissecans (OCD) lesions, which poses the risk of premature osteoarthritis, and often associates with a history of prior ankle sprains and fractures. Unstable lesions require surgical intervention. A 4-stage radiographic classification system has been previously proposed, but this system has a 50% false negative rate when compared to arthroscopic assessment (reference standard). Recently, MRI and arthroscopic findings have been correlated in adults, but no such validation study has been performed in children. Thus, the purpose of our study was to identify MRI findings that predict instability of OCD lesions of the ankle in children. Read More
Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020
Authors: Patel Maya, Francavilla Michael, Longoria Cruz, Nguyen Michael, Barrera Christian, Nguyen Jie
Keywords: tibiotalar joint, OCD
To investigate magnetic resonance (MR) imaging features of sacroiliac joint infections in children with respect to age and with clinical correlation. Read More
Meeting name: SPR 2019 Annual Meeting & Postgraduate Course , 2019
Authors: Cohen Sara, Biko David, Kaplan Summer, Barrera Christian, Serai Suraj, Nguyen Jie
Keywords: sacroiliitis
Ultra-Short Echo Time (UTE) imaging, characterized by acquisition schemes with Echo Times (TE) of < 1 msec, have enabled new applications of pediatric musculoskeletal (MSK) MRI including cortical bone, tendons and ligaments. The protons in the bone collagen matrix have an effective T2* on the order of 20 – 80 µsec. The UTE sequence consists of a 40 µs long non-selective RF pulse followed by transmit/receive switch time and a 100% asymmetric data, i.e. free induction decay, acquisition from the center to the surface of a sphere. In order to achieve the shortest possible TE, data acquisition starts already during ramp-up time of the readout gradient. The aim of our study was to assess the feasibility and compare two UTE sequences, a prototype 3D UTE with radial koosh-ball acquisition and clinically available pointwise encoding time reduction with radial acquisition (PETRA), in pediatric patients referred for clinical MSK studies. Read More
Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020
Authors: Serai Suraj, Carson Robert, Venkatesh Tanvi, Kollasch Peter, Liu Ke Cheng, Rajapakse Chamith, Nguyen Jie
Keywords: UTE
Osteoid osteomas of the hands and feet can be very challenging diagnoses to make. We attempt to assess diagnostic features to aid in detection and prevent delay of treatment. Read More
Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020
Authors: Gendler Liya, Ho-fung Victor, Degnan Andrew, Sze Raymond, Nguyen Michael, Hong Shijie, Chang Benjamin, Arkader Alexandre, Nguyen Jie
Keywords: Osteoid Osteoma, Benign Bone Tumor, MRI
Anatomic changes during bone growth and skeletal maturation are under-studied and incompletely understood, partially attributed to the sparing use of ionizing radiation in children. Recently, a clinically-feasible UTE (ultra-short echo time) MRI technique has emerged, enabling the direct visualization of bone. Although validated in adults, its spatial resolution and reproducibility have not been fully investigated in children. Therefore, the purpose of this study is 1) to determine the feasibility of UTE MRI to quantify changes in vertebral porosity and disc hydration along the thoracolumbar spine and 2) to investigate inter-rater reproducibility. Read More
Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020
Authors: Nguyen Jie, Hong Shijie, Nguyen Michael, Venkatesh Tanvi, Serai Suraj, Carson Robert, Barrera Christian, Cahill Patrick, Rajapakse Chamith
Keywords: quantitative MRI, bone, spine
Effective triage and timely communication are critical for optimal patient care. MSK diagnoses that are considered emergent (requiring immediate attention), urgent (warranting attention sooner), and non-urgent (necessitating follow-up) are not yet defined. The purposes of this project are 1) to define the clinical importance of MSK diagnoses and the preferred communication methods, and 2) to investigate differences between subspecialties and between those with different years in practice. Read More
Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020
Authors: Patel Maya, Nguyen Jie, Gaballah Marian, Arkader Alexandre, Lawrence John, Kaplan Summer, Johnson Ann, Grady Matthew, Sze Raymond, Talwar Divya
Keywords: communication