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Impact of intravenous CT contrast agents on internal calibration techniques to determine trabecular BMD of the lumbar spine.
Eur J Radiol
January 2025
Department of Medicine 3, Friedrich-Alexander-University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany; Institute of Medical Physics, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany. Electronic address:
Objectives: Contrast agents are frequently administered in computed tomography (CT) scans used for opportunistic screening of osteoporosis. The objective of this study is to compare the impact of contrast-related bone mineral density (BMD) increase between phantom-based and internal CT calibration techniques.
Materials And Methods: Phantom-based and internal CT calibration techniques were used to determine trabecular BMD in 93 existing clinical CT scans of the lumbar spine of 34 subjects, scanned before and after administration of contrast agents.
Short- and long-term effects of transcutaneous spinal cord stimulation on autonomic cardiovascular control and arm-crank exercise capacity in individuals with a spinal cord injury (STIMEX-SCI): study protocol.
BMJ Open
January 2025
School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
Introduction: Individuals with higher neurological levels of spinal cord injury (SCI) at or above the sixth thoracic segment (≥T6), exhibit impaired resting cardiovascular control and responses during upper-body exercise. Over time, impaired cardiovascular control predisposes individuals to lower cardiorespiratory fitness and thus a greater risk for cardiovascular disease and mortality. Non-invasive transcutaneous spinal cord stimulation (TSCS) has been shown to modulate cardiovascular responses at rest in individuals with SCI, yet its effectiveness to enhance exercise performance acutely, or promote superior physiological adaptations to exercise following an intervention, in an adequately powered cohort is unknown.
View Article and Find Full Text PDFThe Relationship Between ADAMTS-4 and ADAMTS-5 Enzyme Levels in Patients With Degenerative Disc Disease: A Prospective Biochemical Study.
JOR Spine
March 2025
Department of Neurosurgery Celal Bayar University, Faculty of Medicine Manisa Turkey.
Study Design: Prospective biochemical study of comparison of A Disintegrin and Metalloproteinase with Thrombospondin motifs-4 (ADAMTS-4) and A Disintegrin and Metalloproteinase with Thrombospondin motifs 5 (ADAMTS5) levels in preoperative and postoperative venous blood, as well as in disc tissue obtained during surgery, in patients undergoing surgery for intervertebral disc disease, with enzyme levels in venous blood from a control group.
Objective: To compare the levels of ADAMTS-4 and ADAMTS-5 between patients with degenerative intervertebral discs and a healthy control group, aiming to identify biomarkers associated with intervertebral disc degeneration.
Literature: Although numerous studies have investigated the relationship between ADAMTS-4 and ADAMTS-5 enzymes and degeneration in experimental rat models and human tissues, no study has correlated their serum levels with intervertebral disc degeneration.
Microsurgical Treatment of a Recurrent Tentorial Dural Arteriovenous Fistula After Endovascular Embolization With Skeletonization of the Dural Venous Sinuses: 2-Dimensional Operative Video.
Oper Neurosurg (Hagerstown)
January 2025
Department of Neurosurgery, University of Tennessee Health Science Center, Memphis, Tennessee, USA.
Congestive myelopathy secondary to epidural venous engorgement and venous congestion in a patient with Budd-Chiari syndrome and its management through inferior vena cava stenting.
BMJ Case Rep
January 2025
Radiodiagnosis and Interventional Radiology, AIIMS Bhubaneswar, Bhubaneswar, Odisha, India.
Budd-Chiari syndrome with obstruction in the inferior vena cava causes increased venous pressure in the azygous-hemiazygous system and paravertebral venous plexus, which is transmitted to the epidural venous plexus, devoid of the valves. It causes epidural venous plexus engorgement and venous congestion and may present rarely with low back pain or radiating pain. However, patients developing lower limb weakness as a complication of Budd-Chiari syndrome is an infrequent and severe presentation.
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