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(Anterior cruciate ligament) AND t1rho

Jenna Le, Qi Peng, Karen Sperling
Osteoarthritis (OA) is a disease whose hallmark is the degeneration of articular cartilage. There is a worsening epidemic of OA in the United States today, with considerable economic costs. In order to develop more effective treatments for OA, noninvasive biomarkers that permit early diagnosis and treatment monitoring are necessary. T1rho and T2 mapping are two magnetic resonance imaging techniques that have shown great promise as noninvasive biomarkers of cartilage degeneration. Each of the two techniques is endowed with advantages and disadvantages: T1rho can discern earlier biochemical changes of OA than T2 mapping, while T2 mapping is more widely available and can be incorporated into existing imaging protocols in a more time-efficient manner than T1rho...
July 29, 2016: Annals of the New York Academy of Sciences
Kanji Osaki, Ken Okazaki, Yukihisa Takayama, Hirokazu Matsubara, Umito Kuwashima, Koji Murakami, Toshio Doi, Yoshio Matsuo, Hiroshi Honda, Yukihide Iwamoto
BACKGROUND: Patients with anterior cruciate ligament (ACL)-injured knees are at an increased risk of posttraumatic osteoarthritis (OA). OA changes secondary to ACL injuries have many variations, and when and where early cartilage degenerative change begins has not yet been established. PURPOSE: To characterize the location of cartilage degeneration after ACL injury associated with time since injury using T1rho (T1ρ) mapping. STUDY DESIGN: Cross-sectional study; Level of evidence, 3...
May 2015: Orthopaedic Journal of Sports Medicine
Ligong Wang, Gregory Chang, Jenny Bencardino, James S Babb, Andrew Rokito, Laith Jazrawi, Orrin Sherman, Ravinder R Regatte
PURPOSE: To explore the feasibility of T1rho mapping of menisci at 3T in discriminating between patients with acute anterior cruciate ligament (ACL) injury and healthy controls. MATERIALS AND METHODS: Thirty-three subjects were included in the study and subdivided into two subgroups: 16 healthy controls (4 females, 12 males; mean age = 34.4 ± 10.2 years, age range 24-63 years), 17 patients with ACL injury (3 females, 14 males; mean age = 29.8 ± 10...
February 2015: Journal of Magnetic Resonance Imaging: JMRI
Stephen J Matzat, Jasper van Tiel, Garry E Gold, Edwin H G Oei
Due to aging populations and increasing rates of obesity in the developed world, the prevalence of osteoarthritis (OA) is continually increasing. Decreasing the societal and patient burden of this disease motivates research in prevention, early detection of OA, and novel treatment strategies against OA. One key facet of this effort is the need to track the degradation of tissues within joints, especially cartilage. Currently, conventional imaging techniques provide accurate means to detect morphological deterioration of cartilage in the later stages of OA, but these methods are not sensitive to the subtle biochemical changes during early disease stages...
June 2013: Quantitative Imaging in Medicine and Surgery
Alexander A Theologis, Bryan Haughom, Fei Liang, Yu Zhang, Sharmila Majumdar, Thomas M Link, C Benjamin Ma, Xiaojuan Li
PURPOSE: The goal of this study is to compare the cartilage of anterior cruciate ligament (ACL)-reconstructed and uninjured contralateral knees using T 1ρ MRI 12-16 months after ACL reconstructions. METHODS: Eighteen patients with ACL-reconstructed knees (10 women, 8 men, mean age = 38.3 ± 7.8 years) were studied using 3T MRI. Injured and contralateral knee MR studies were acquired 12-16 months post-operatively. Cartilage sub-compartment T 1ρ values of each injured knee were compared with the contralateral knee's values...
February 2014: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Douglas R Pedersen, Noelle F Klocke, Daniel R Thedens, James A Martin, Glenn N Williams, Annunziato Amendola
With a rise in post-traumatic osteoarthritis, OA no longer is considered just a disease of aging. The 'gold standard' for OA diagnosis has long been planar radiographs for visualizing osteophytes, joint space narrowing and sclerotic changes. A typical magnetic resonance imaging (MRI) protocol will acquire proton density, T1, T2, and fat suppressed images that give a comprehensive picture of morphologic changes associated with injury and subsequent degenerative processes. However, the earliest events of cartilage degeneration occur within the tissue, before measureable changes in morphology...
2011: Iowa Orthopaedic Journal
Bryan Haughom, William Schairer, Richard B Souza, Dana Carpenter, C Benjamin Ma, Xiaojuan Li
PURPOSE: Altered kinematics following ACL-reconstruction may be a cause of post-traumatic osteoarthritis. T(1ρ) MRI is a technique that detects early cartilage matrix degeneration. Our study aimed to evaluate kinematics following ACL-reconstruction, cartilage health (using T(1ρ) MRI), and assess whether altered kinematics following ACL-reconstruction are associated with early cartilage degeneration. METHODS: Eleven patients (average age: 33 ± 9 years) underwent 3T MRI 18 ± 5 months following ACL-reconstruction...
August 2012: Knee
Radu I Bolbos, C Benjamin Ma, Thomas M Link, Sharmila Majumdar, Xiaojuan Li
OBJECTIVE: The aims of this study were to evaluate the spatial distribution of cartilage structure in controls and patients, and to quantitatively assess the cartilage overlying bone marrow edema-like lesion (BMEL) and within defined cartilage compartments in knees with anterior cruciate ligament (ACL) tears using T1rho mapping technique at 3 T magnetic resonance imaging. MATERIALS AND METHODS: The knee joints of 15 healthy controls (4 women, 11 men, mean age = 30...
November 2008: Investigative Radiology
R I Bolbos, T M Link, C Benjamin Ma, S Majumdar, X Li
OBJECTIVE: The aim of this study was to assess the reproducibility of meniscus T1rho measurements, and to study T1rho relaxation time in the lateral meniscus (LM) and its relationship with adjacent cartilage T1rho in knees with acute anterior cruciate ligament (ACL) injuries at 3T magnetic resonance imaging. METHOD: Quantitative assessment of the meniscus and cartilage was performed in 15 healthy controls and 16 ACL-injured patients using a T1rho mapping technique...
January 2009: Osteoarthritis and Cartilage
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