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Related Concept Videos

The Parathyroid Glands00:59

The Parathyroid Glands

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The two pairs of parathyroid glands embedded within the posterior surface of the thyroid gland are restricted by a dense capsule around them. These glands comprise two distinct cell populations—parathyroid oxyphil and parathyroid principal cells- pivotal in calcium homeostasis.
Oxyphil cells, whose functions remain elusive, emerge during late puberty, adding a layer of complexity to the parathyroid gland's intricacies. In contrast, principal parathyroid cells undertake a vital role by...
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Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.
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The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
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Chronic Kidney Disease III: Interprofessional Care01:28

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Chronic kidney disease (CKD) requires collaborative and comprehensive management. CKD progresses through stages and can lead to end-stage kidney disease (ESKD) if untreated. Interprofessional collaboration and patient education are crucial, enabling patients to manage their health and improve their quality of life.Diagnostic approach for chronic kidney diseaseThe diagnosis of CKD primarily focuses on the glomerular filtration rate (GFR), which assesses kidney function by measuring how well...
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Synthesis and Functions of Calcitonin00:51

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Calcitonin, a vital polypeptide hormone, regulates calcium levels within body fluids. It is released by the parafollicular cells, also known as C cells, situated in the follicular epithelium of the thyroid gland. Calcitonin responds to fluctuations in blood calcium levels and the influence of gastrointestinal hormones like gastrin and cholecystokinin.
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Related Experiment Video

Updated: Apr 28, 2026

Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy
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Dynamic CT for parathyroid disease: are multiple phases necessary?

P Raghavan1, C R Durst2, D A Ornan2

  • 1From the Department of Diagnostic Radiology and Nuclear Medicine (P.R.), University of Maryland Medical Center, Baltimore, Maryland prashant.raghavan@gmail.com.

AJNR. American Journal of Neuroradiology
|June 7, 2014
PubMed
Summary
This summary is machine-generated.

The arterial phase alone in 4D CT scans accurately detects parathyroid adenomas, potentially reducing radiation dose by 75%. This method offers comparable diagnostic accuracy to multi-phase protocols for parathyroid lesion localization.

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Two Techniques to Create Hypoparathyroid Mice: Parathyroidectomy Using GFP Glands and Diphtheria-Toxin-Mediated Parathyroid Ablation
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Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging
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Area of Science:

  • Radiology
  • Medical Imaging
  • Nuclear Medicine

Background:

  • 4D CT protocols for parathyroid lesion detection typically use multiple imaging phases.
  • Optimizing these protocols is crucial for minimizing radiation exposure.
  • The study aimed to find the most effective combination of phases for diagnostic accuracy and dose reduction.

Purpose of the Study:

  • To determine the ideal combination of 4D CT phases for parathyroid lesion detection.
  • To minimize radiation dose without compromising diagnostic accuracy.
  • To evaluate the efficacy of fewer imaging phases for parathyroid adenoma localization.

Main Methods:

  • Retrospective review of 29 primary hyperparathyroidism patients' 4D CT scans.
  • Neuroradiologists evaluated imaging in five different phase combinations.
  • Accuracy in lateralizing and localizing parathyroid adenomas was assessed.

Main Results:

  • The arterial phase alone demonstrated high accuracy (90.5% lateralization, 91.5% localization).
  • No statistically significant difference in accuracy was found between the arterial phase alone and other multi-phase combinations.
  • P-values of .976 and .996 indicate no significant difference in lateralization and localization accuracy.

Conclusions:

  • Arterial phase imaging alone may be sufficient for accurate parathyroid adenoma localization.
  • Prospective validation in larger patient groups is recommended.
  • This approach could potentially reduce radiation dose to one-fourth of current protocols.