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相关概念视频

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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Hormones and Bone Tissue01:17

Hormones and Bone Tissue

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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.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
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Skeleton and Calcium Homeostasis01:21

Skeleton and Calcium Homeostasis

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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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Synthesis and Functions of Calcitonin00:51

Synthesis and Functions of Calcitonin

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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.
The exact mechanisms by which calcitonin operates in calcium homeostasis remain elusive, but its significance is evident in several vital...
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Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies01:28

Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies

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Peptic ulcer disease (PUD) presents with diverse symptoms depending on the location and severity of the ulcer. Clinical manifestations of peptic ulcer include dull pain and a burning sensation in the mid-epigastric region.
Few clinical manifestations differentiate gastric ulcers from duodenal ulcers. Distinctions in the location, timing, and pain relief are crucial for healthcare providers in differentiating between gastric and duodenal ulcers during clinical assessments.
88
The Thyroid Gland01:23

The Thyroid Gland

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The thyroid gland is a small, butterfly-shaped gland located in the neck and covers the anterior surface of the trachea. The gland has two lateral lobes connected by a thin tissue mass called the isthmus. Internally, each lobe comprises many small spherical structures known as thyroid follicles, surrounded by a network of blood vessels.
The follicles have a central cavity lined by simple cuboidal to squamous epithelial cells called follicular cells. These cells produce the glycoprotein...
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相关实验视频

Updated: Jun 4, 2025

Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging
07:12

Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging

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在原发性副甲状腺功能障碍症的局部化.

Piyush Aggarwal1, Vinisha Gunasekaran1, Ashwani Sood1

  • 1Department of Nuclear Medicine, Post Graduate Institute of Medical Education and Research, Sector 12, Chandigarh 160012, India.

Best practice & research. Clinical endocrinology & metabolism
|January 4, 2025
PubMed
概括

准确的术前定位甲状腺功能障碍,主要是由甲状腺腺瘤引起的,对于成功的手术至关重要. 像99米Tc-MIBI扫描和F-Choline PET/CT等先进的成像技术可以提高诊断准确度.

科学领域:

  • 内分泌学 在内分泌学.
  • 核医学是一种核医学.
  • 放射学 放射学是一门学科.

背景情况:

  • 初级甲状腺功能障碍是一种常见的内分泌疾病,主要是由甲状腺腺瘤或甲状腺增生引起的.
  • 高血是生物化学发现的标志,需要准确的诊断和局部化才能有效管理.
  • 在手术前定位异常的甲状腺腺体对于优化手术结果至关重要.

研究的目的:

  • 审查和比较各种非侵入性成像方式,以在手术前定位甲状腺腺在一次性甲状腺功能障碍.
  • 评估功能性成像技术的诊断性能,包括放射性核素扫描和PET/CT,用于识别副甲状腺病理.
  • 突出高级成像在复杂病例中的作用,如宫外腺瘤,持续/复发性甲状腺功能障碍症和并发性甲状腺疾病.

主要方法:

  • 审查当前的非侵入性成像技术:宫超声波,99米Tc-Methoxyisobutyl isonitrile (MIBI) 剪影用SPECT/CT,4DCT,MRI和F-Choline PET/CT.
  • 功能性成像准确性的分析,特别是异位,持久或复发的甲状腺腺瘤.
  • 组合成像方式 (例如超声波和99mTc-MIBI) 与单个技术的比较.
  • 评估F-胆PET/CT和PET/MRI用于增生和多重腺瘤.
  • 在模两可的病例和并发性甲状腺疾病中考虑4DCT.
关键词:
腺瘤腺瘤是一种过高血症的情况.甲状腺功能障碍症的高甲状腺功能障碍.过度增生症 过度增生症最少侵入性的外科手术程序.定子发射断层扫描/计算机断层扫描主要的,主要的,主要的.

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Last Updated: Jun 4, 2025

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Two Techniques to Create Hypoparathyroid Mice: Parathyroidectomy Using GFP Glands and Diphtheria-Toxin-Mediated Parathyroid Ablation
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主要成果:

  • 功能性成像,包括99mTc-MIBI光学成像和18F-Choline PET/CT,在局部化副甲状腺瘤方面表现出高度准确性,特别是在具有挑战性的病例中.
  • 结合超声波和99米Tc-MIBI光阴学,与单独使用这两种方式相比,提供了更高的灵敏度和特异性.
  • F-Choline PET/CT显示了对副甲状腺增生和多重腺瘤的增强诊断性能.
  • 18F-胆PET/MRI和4DCT有助于在患有模两可的发现或并发性甲状腺结节性疾病的患者中表征病变.
  • 术内探针引导手术提高了针对性,微创手术的成功率.

结论:

  • 使用先进的成像方法进行准确的手术前定位对于成功的手术治疗原发性甲状腺功能障碍症至关重要.
  • 功能性成像技术,特别是F-Choline PET/CT和组合方式,显著提高了诊断产量.
  • 需要进一步开发更具特异性的放射性药物,以减少假阳性结果并提高成像精度.