Related Experiment Videos
Acute and chronic radiation injury
1Division of Vascular Surgery at The Medical College of Wisconsin, Milwaukee, WI 53226, USA. krbrown@mcw.edu
Journal of Vascular Surgery
|September 17, 2010
Summary
Radiation exposure can cause tissue injury at the cellular level. Employing effective fluoroscopic techniques is crucial for protecting both patients and physicians during medical procedures.
Area of Science:
- Radiation Biology
- Medical Physics
- Cellular Biology
Background:
- Different body tissues exhibit varying tolerances to radiation exposure.
- Understanding radiation biology is key to mitigating potential harm.
Purpose of the Study:
- To introduce fundamental concepts of radiation biology.
- To discuss the impact of radiation on diverse human tissues.
- To highlight protective measures against radiation injury.
Main Methods:
- A comprehensive review of reference texts and scientific literature.
- Summarization of key principles in radiation biology.
- Analysis of direct and indirect cellular damage mechanisms induced by radiation.
Main Results:
- Prolonged radiation exposure time is a significant risk factor for injury, particularly in lengthy vascular interventions.
- Specific procedural maneuvers can effectively reduce radiation exposure for both patients and medical professionals.
- Cellular-level damage is the primary mechanism through which radiation induces tissue injury.
Conclusions:
- Adherence to optimal fluoroscopic techniques is essential for safeguarding physicians and patients.
- Minimizing radiation exposure is critical in interventional procedures.
Related Concept Videos
Biological Effects of Radiation
All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they produce ions...
Chronic Inflammation: Introduction
Chronic inflammation is a prolonged, dysregulated immune response that persists for weeks to years when the inciting stimulus is difficult to eradicate or when self‑antigens drive ongoing reactivity. Morphologically, it is defined by mononuclear cell infiltration, progressive tissue destruction, and concurrent attempts at healing via angiogenesis and fibrosis. Compared with acute inflammation, edema is less prominent while cellular infiltration predominates; triggers include persistent...
Cellular Injury I: Introduction
Cellular injury occurs when a cell cannot maintain homeostasis or adapt to stressors such as hypoxia, toxins, or trauma. Depending on severity and duration, injury may be reversible, allowing recovery, or irreversible, leading to cell death.General Mechanisms of Cell InjuryAlthough causes vary, most cellular injuries arise from a few key mechanisms that disrupt essential functions and often amplify one another. Cell survival depends on the extent and balance of these disturbances.ATP depletion...
Acute Inflammation I: Inflammatory Response
Acute inflammation is a rapid, short-lived physiological response to tissue injury or infection, designed to eliminate harmful agents and initiate repair. This tightly regulated process typically lasts from minutes to several days and is triggered by factors such as microbial invasion, physical trauma, or chemical injury.Recognition and Mediator ReleaseThe inflammatory response begins when resident immune cells—such as mast cells, macrophages, and dendritic cells—detect damage-associated...
Acute Kidney Injury II: Pathophysiology
Acute kidney injury (AKI) causes are categorized into three primary categories based on the location of the injury: prerenal, intrarenal (or intrinsic), and postrenal causes. This classification guides clinical management and illustrates how different pathways can impair kidney function.Etiology and Pathophysiology of Acute Kidney Injury1. Prerenal causesEtiology: Prerenal Acute Kidney Injury, the most common type, occurs when reduced blood flow to the kidneys decreases filtration capacity...
Acute Kidney Injury III: Clinical Manifestations
Acute Kidney Injury (AKI) progresses through distinct clinical phases: the oliguric, diuretic, and recovery phases, each marked by unique manifestations and challenges.Oliguric Phase:The oliguric phase is the initial stage of AKI, typically lasting 10 to 14 days. This phase is marked by a significant reduction in urine output, usually less than 400 mL per day, indicating decreased kidney function. Fluid retention is a prominent feature, leading to symptoms such as edema, hypertension, and...