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Articles by Francesco Sciacca
Vertebral body endplate
Vertebral body endplates are anatomically discrete structures that form the interface between the vertebral bodies and the adjacent intervertebral discs. They are constituted centrally by a cartilaginous layer and peripherally by a bone ring apophysis. The cartilaginous layer is related to the nucleus pulposus and annulus fibrosus and has an important role in intervertebral disc nutrition 1. The bone ring apophysis is connected to the annulus fibrosus by Sharpey fibers.
Law of Bergonié and Tribondeau
The law of Bergonie and Tribondeau is that the radiosensitivity of a biological tissue is directly proportional to the mitotic activity and inversely proportional to the degree of differentiation of its cells. This law underpins the field of radiation-oncology, although such a general law may not apply precisely in all cases. Usually neoplastic cells are more radiosensitive than the cells from which they originate; in fact, they reproduce much faster than healthy cells.
Post-acute COVID-19 vaccination syndrome
Citation: Sciacca F, Post-acute COVID-19 vaccination syndrome. Reference article, Radiopaedia.org (Accessed on 10 Apr 2024) https://radiopaedia.org/articles/187452 DOI: - rID: 187452 Article created: 10 Apr 2024, Francesco Sciacca ◉ Disclosures: At the time the article was created Francesco Sciacca had no financial relationships to ineligible companies to disclose.
Diagnostic and Statistical Manual of Mental Disorders
The Diagnostic and Statistical Manual of Mental Disorders (more commonly known as the DSM) is published by the American Psychiatric Association and is the most widely used guide to psychiatric diseases in clinical practice and research globally. The first edition was published in 1952; the latest, the fifth edition, and known as DSM-5 - came out in the United States in 2013 7.
Guillain-Barré syndrome
Guillain-Barré syndrome (GBS) is a heterogeneous group of autoimmune polyradiculopathies, involving sensory, motor, and autonomic nerves. It is the most common cause of rapidly progressive flaccid paralysis. It is believed to be one of a number of related conditions, sharing a similar underlying autoimmune abnormality, collectively known as anti-GQ1b IgG antibody syndrome.
Bell palsy | Radiology Reference Article | Radiopaedia.org
Bell palsy, also known as idiopathic peripheral facial paralysis,is characterized by rapid onset facial nerve paralysis, often with resolution in 6-8 weeks, without an identifiable etiology. As there are numerous causes of facial nerve palsy, many acute in onset, it is currently a diagnosis of exclusion supported by a typical presentation. The peak age of presentation is between 15-50 years with ~25 cases per 100,000 per year. There is no gender predominance 10.
DNA | Radiology Reference Article | Radiopaedia.org
DNA (deoxyribonucleic acid) is a nucleic acid that encodes the genetic information (genome) necessary for RNA (ribonucleic acid) transcription (transcriptome) and protein synthesis (proteome) 1. It is contained in the nucleus of eukaryotic cells in the form of chromatin or chromosomes 7,8. DNA is made up of two double-stranded polynucleotide chains.
Meta-analysis | Radiology Reference Article | Radiopaedia.org
Citation: Sciacca F, Meta-analysis. Reference article, Radiopaedia.org (Accessed on 20 Jan 2024) https://radiopaedia.org/articles/182580 Article created: 20 Jan 2024, Francesco Sciacca ◉ Disclosures: At the time the article was created Francesco Sciacca had no financial relationships to ineligible companies to disclose.
Medical abbreviations and acronyms (V)
Citation: Bell D, Sciacca F, Sharma R, et al. Medical abbreviations and acronyms (V). Reference article, Radiopaedia.org (Accessed on 20 Jan 2024) https://doi.org/10.53347/rID-54610 Article created: 17 Jul 2017, Daniel J Bell ◉ Last revised: 20 Jan 2024, Francesco Sciacca ◉ Disclosures: At the time the article was last revised Francesco Sciacca had no financial relationships to ineligible companies to disclose.
Medical abbreviations and acronyms (F)
Citation: Bell D, Sciacca F, Knipe H, et al. Medical abbreviations and acronyms (F). Reference article, Radiopaedia.org (Accessed on 19 Jan 2024) https://doi.org/10.53347/rID-54594 Article created: 17 Jul 2017, Daniel J Bell ◉ Last revised: 19 Jan 2024, Francesco Sciacca ◉ Disclosures: At the time the article was last revised Francesco Sciacca had no financial relationships to ineligible companies to disclose.
Medical abbreviations and acronyms (O)
Citation: Bell D, Sciacca F, Sharma R, et al. Medical abbreviations and acronyms (O). Reference article, Radiopaedia.org (Accessed on 13 Dec 2023) https://doi.org/10.53347/rID-54603 Article created: 17 Jul 2017, Daniel J Bell ◉ Last revised: 13 Dec 2023, Francesco Sciacca ◉ Disclosures: At the time the article was last revised Francesco Sciacca had no financial relationships to ineligible companies to disclose.
COVID-19 | Radiology Reference Article | Radiopaedia.org
For a quick reference guide, please see our COVID-19 summary article. COVID-19 (coronavirus disease-2019) is an infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a strain of coronavirus. The first cases were seen in Wuhan, China, in December 2019 before spreading globally. The current outbreak was officially recognized as a pandemic by the World Health Organization (WHO) in March 2020.
Scintillator (gamma camera)
The scintillator is the component of a gamma camera which receives the gamma rays emitted from a radionuclide in a nuclear medicine scan and converts it to visible light photons. It is located just behind the collimator device. A scintillator crystal may have properties of phosphorescence, where trapped charges within the crystal are released as light later (known as afterglow), which can negatively affect the gamma camera performance 3.
D-dimer | Radiology Reference Article | Radiopaedia.org
D-dimer is a commonly tested biological marker which is produced by the enzymatic breakdown of cross-linked fibrin which forms the fibrous mesh of a blood clot. The measurement of D-dimer in the circulation acts as a marker of coagulation and fibrinolysis, which can be useful in the diagnosis of multiple diseases.
Long COVID-19 | Radiology Reference Article | Radiopaedia.org
Long COVID-19 also known as post-acute sequelae of SARS-CoV-2 infection (PASC) or post COVID-19 condition, is a post-viral syndrome affecting people who have recovered from COVID-19 infection. Symptoms are similar to those experienced by patients with chronic inflammatory response syndrome (CIRS) rather than myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) 6. To aid research, codes have been introduced to identify certain cohorts (ICD-10, U09.9) 11.
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