Items tagged “nuclear medicine”

58 results found
Article

Tc-99m MAA

Tc-99m MAA (macroaggregated albumin) is one of the technetium radiopharmaceuticals used in lung perfusion imaging. Characteristics photon energy: 140 KeV physical half life: 6 hours biological half life: 2-3 hours normal distribution: lungs, liver, spleen, kidneys pharmacokinetics: >90% p...
Article

Tc-99m labeled RBC

Tc-99m labeled RBC is one of the technetium radiopharmaceuticals used in the assessment of GI bleeding. Characteristics photon energy: 140 KeV physical half life: 6 hours biological half life:  normal distribution: heart, vessels, spleen miscellaneous facts: threshold for detection is 0.0...
Article

Tc-99m sestamibi

Tc-99m sestamibi (also known as sesta-methoxyisobutylisonitrile) is one of the technetium radiopharmaceuticals.  Characteristics photon energy: 140 KeV physical half-life: 6 hours normal distribution: thyroid, parathyroid, heart (myocardium) excretion: hepatobiliary and renal target organ:...
Article

Tc-99m DTPA (aerosol)

Tc-99m DTPA (diethylenetriamine-pentaacetic acid) (aerosol) is one of the technetium agents and is used in VQ imaging. Characteristics photon energy: 140 KeV physical half life: 6 hours biological half life: 1 hour normal distribution: lungs pharmacokinetics: aerosol deposited in bronhoal...
Case

Graves disease (thyroid scintigraphy)

 Diagnosis probable
Dr Arshdeep Sidhu
Published 28 Feb 2013
69% complete
Nuclear medicine
Article

Ioflupane (I-123)

Ioflupane (I-123) is a radiopharmaceutical for the diagnosis of Parkinson disease and its differential diagnoses. Characteristics iodine-123 is a cyclotron product physical half-life is 13.22 hours predominant energy of its gamma spectrum is 159 keV Ioflupane is the international non-propri...
Article

Parathyroid adenoma

Parathyroid adenomas are benign tumors of the parathyroid glands, and are the most common cause of primary hyperparathyroidism. Clinical presentation Patients present with primary hyperparathyroidism: elevated serum calcium levels and elevated serum parathyroid hormone levels. This results in ...
Case

Abdominal aortic aneurysm (incidental finding on renal scintigraphy)

 Diagnosis certain
Dr Christian T. Schmitt
Published 23 Jul 2013
75% complete
Nuclear medicineCT
Article

Radioisotope spills

Radioisotope spills are classified as major or minor Examples of major spills include quantities equal to or larger than: 1mCi I-131 100 mCi Tc-99m or Tl-201 10 mCi Ga-67, In-111, or I-123
Article

Gallium 67 scintigraphy

Gallium 67 is a photon-emitting radiotracer which is used in the form of various salts like citrate and nitrate. Once administered, imaging may consist of planar (2 dimensional) , SPECT, and SPECT/CT acquisitions. Once injected it binds to plasma proteins (especially transferrin), and has a pred...
Article

Positron emission tomography

Positron emission tomography (PET) is a modern non-invasive imaging technique for quantification of radioactivity in vivo. It involves the intravenous injection of a positron-emitting radiopharmaceutical, waiting to allow for systemic distribution, and then scanning for detection and quantificat...
Article

SPECT vs PET

Single photon emission computed tomography (SPECT) and positron emission tomography (PET) are nuclear medicine imaging techniques which provide metabolic and functional information unlike CT and MRI. They have been combined with CT and MRI to provide detailed anatomical and metabolic informatio...
Case

Transient ischemic dilatation

 Diagnosis certain
Dr Matt A. Morgan
Published 29 Oct 2014
88% complete
Nuclear medicine
Article

Postoperative assessment after thyroid cancer surgery

Postoperative assessment after thyroid cancer surgery is performed in the surgical bed and regional lymph nodes, looking for possible recurrence of disease. Radiographic features Ultrasound usually performed in first 6-12 months, and then as needed by the patient's risk factors 1 suspicious ...
Case

Alpha decay

 Diagnosis not applicable
Ass. Pr. Mirjan M. Nadrljanski
Published 28 Apr 2015
32% complete
Diagram
Case

Renal osteodystrophy - metabolic superscan

 Diagnosis certain
Dr Evan Sirc
Published 12 Aug 2015
82% complete
X-rayNuclear medicine
Article

SeHCAT

SeHCAT™ (23-seleno-25-homo-tauro-cholic acid or tauroselcholic acid) is a radiopharmaceutical used in the investigation of bile salt malabsorption, which is a cause of chronic diarrhea.  Characteristics physical half-life: 118 days Uses, dosage and timings A capsule containing SeHCAT is inge...
Case

Normal V/Q scan

 Diagnosis not applicable
Dr Craig Hacking
Published 23 Dec 2015
54% complete
Nuclear medicine
Article

Iodine-131

Iodine-131​ (131I or I-131) is a radioisotope of iodine, which is used in the diagnosis and treatment of thyroid lesions. It is one of the oldest radiotracers used in nuclear medicine, in use for over 50 years. It is predominately used in thyroid ablation therapy, for patients post-thyroidectomy...
Article

Indium-111 OncoScint

Indium-111 OncoScint is a radiopharmaceutical used in SPECT imaging. It is a labeled monoclonal antibody that is directed against TAG-72, which is a tumor-associated antigen associated with ~95% of colorectal carcinomas and 100% of ovarian carcinomas 1,2. Background hepatic uptake limits sensiti...

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