Serai Suraj,  Carson Robert,  Venkatesh Tanvi,  Kollasch Peter,  Liu Ke Cheng,  Rajapakse Chamith,  Nguyen Jie

Final Pr. ID: Paper #: 049

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

Authors:  Serai Suraj,  Carson Robert,  Venkatesh Tanvi,  Kollasch Peter,  Liu Ke Cheng,  Rajapakse Chamith,  Nguyen Jie

Keywords:  UTE

Elangovan Stacey,  Moon Chan,  Zhang Bin,  Kim Hee Kyung

Final Pr. ID: Paper #: 050

Cartilage imaging in adults has been a rich area of research in which MR T2 and T1rho mapping provide complementary information regarding the extracellular matrix, including collagen fibers and glycosaminoglycans, respectively. However, in the pediatric population, there remains a need to obtain normative data for these variables during skeletal maturation.

The purpose of this study is to provide complementary information regarding cartilage during skeletal maturation with T2 and T1rho maps. Read More

Authors:  Elangovan Stacey,  Moon Chan,  Zhang Bin,  Kim Hee Kyung

Keywords:  Cartilage ,  Knee ,  Normal

Nguyen Jie,  Bram Joshua,  Ganley Theodore,  Lawrence John,  Patel Maya,  Ho-fung Victor

Final Pr. ID: Paper #: 051

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

Authors:  Nguyen Jie,  Bram Joshua,  Ganley Theodore,  Lawrence John,  Patel Maya,  Ho-fung Victor

Keywords:  Knee ,  MRI ,  ramp

Nguyen Jie,  Barrera Christian,  Back Susan,  Patel Maya,  Sankar Wudbhav

Final Pr. ID: Paper #: 052

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

Authors:  Nguyen Jie,  Barrera Christian,  Back Susan,  Patel Maya,  Sankar Wudbhav

Keywords:  DDH ,  MRI ,  AVN

Nguyen Jie,  Hong Shijie,  Nguyen Michael,  Venkatesh Tanvi,  Serai Suraj,  Carson Robert,  Barrera Christian,  Cahill Patrick,  Rajapakse Chamith

Final Pr. ID: Paper #: 053

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

Authors:  Nguyen Jie,  Hong Shijie,  Nguyen Michael,  Venkatesh Tanvi,  Serai Suraj,  Carson Robert,  Barrera Christian,  Cahill Patrick,  Rajapakse Chamith

Keywords:  quantitative MRI ,  bone ,  spine

Bedoya Maria,  Barrera Christian,  Ho-fung Victor

Final Pr. ID: Paper #: 054

Humeral lesser tuberosity avulsion fractures (LTAF) are rare injuries in children. Limited information is available describing MRI characteristics. We aim to describe demographics, mechanism of injury, and MRI findings of LTAF. Read More

Authors:  Bedoya Maria,  Barrera Christian,  Ho-fung Victor

Keywords:  Avulsion ,  MRI

Messer Diana,  Adler Brent,  Ruess Lynne,  Brink Farah,  Xiang Henry,  Agnew Amanda

Final Pr. ID: Paper #: 055

Healing fractures are a common radiographic finding in cases of child physical abuse. Accurate time since injury estimation of healing fractures may provide an opportunity for identification and characterization of physical abuse, especially in young children unable to verbalize. This study examines patterns of long bone fracture healing in a modern sample of young children. Read More

Authors:  Messer Diana,  Adler Brent,  Ruess Lynne,  Brink Farah,  Xiang Henry,  Agnew Amanda

Keywords:  Child Abuse ,  Fracture Healing ,  Radiography

Snider Terry

Final Pr. ID: Paper #: 056

Increased rates of survival of patients diagnosed with childhood cancer presents an opportunity to assess long-term effects of treatments. Bone health has been identified as one of the processes impacted by cancer treatment. Bone densitometry is a tool used for patients currently undergoing treatment for childhood cancer and hematologic diseases such as sickle cell disease and those having completed therapy. This discussion will focus on the methods used to measure bone health and some of the challenges involved in doing so. Read More

Authors:  Snider Terry

Keywords:  Bone Densitometry ,  Childhood cancer

Duong Phuong,  Mostoufi-moab Sogol,  Raya José,  Jaimes Camilo,  Delgado Jorge,  Jaramillo Diego

Final Pr. ID: Paper #: 057

To compare how 3D MRI measurements of physeal cartilage volume, and DTI measurements (tract volume and length) correlate with growth parameters and detect differences in growth between patients treated with cis-retinoic acid and controls.
Read More

Authors:  Duong Phuong,  Mostoufi-moab Sogol,  Raya José,  Jaimes Camilo,  Delgado Jorge,  Jaramillo Diego

Keywords:  magnetic resonance imaging ,  growth plate ,  short stature

Hesse Derek,  Finlayson Craig,  Gladstein Aharon,  Samet Jonathan

Final Pr. ID: Paper #: 058

Clear MRI criteria for discoid meniscus in the pediatric population is limited in the literature. This has resulted in a range of meniscal sizes and shapes being called discoid. While the diagnosis may be correct, features that could predict patient symptoms or increase the likelihood of meniscal surgery are unknown. The purpose of this study was to assess MRI features of intact discoid menisci and correlate with clinical outcomes in order to improve the prognostic utility of MRI. Read More

Authors:  Hesse Derek,  Finlayson Craig,  Gladstein Aharon,  Samet Jonathan

Keywords:  discoid ,  meniscus