Radiopharmaceutical

Radiopharmaceuticals, or medicinal radiocompounds, are a group of pharmaceutical drugs containing radioactive isotopes. Radiopharmaceuticals can be used as diagnostic and therapeutic agents. Radiopharmaceuticals emit radiation themselves, which is different from contrast media which absorb or alter external electromagnetism or ultrasound. Radiopharmacology is the branch of pharmacology that specializes in these agents.
The main group of these compounds are the radiotracers used to diagnose dysfunction in body tissues. While not all medical isotopes are radioactive, radiopharmaceuticals are the oldest and still most common such drugs.

Drug nomenclature

As with other pharmaceutical drugs, there is standardization of the drug nomenclature for radiopharmaceuticals, although various standards coexist. The International Nonproprietary Names, United States Pharmacopeia names, and IUPAC names for these agents are usually similar other than trivial style differences. The details are explained at Radiopharmacology § Drug nomenclature for radiopharmaceuticals.

Specific radiopharmaceuticals

A list of nuclear medicine radiopharmaceuticals follows. Some radioisotopes are used in ionic or inert form without attachment to a pharmaceutical; these are also included. There is a section for each radioisotope with a table of radiopharmaceuticals using that radioisotope. The sections are ordered alphabetically by the English name of the radioisotope. Sections for the same element are then ordered by atomic mass number.

Calcium-47

⁴⁷Ca is a beta and gamma emitter.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
Ca-47-Ca²⁺	Bone metabolism	IV	In-vitro	Non-imaging

Carbon-11

¹¹C is a positron emitter.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
C11-L-methyl-methionine	Brain tumour imaging Parathyroid imaging	IV	In-vivo	Imaging

Carbon-14

is a beta emitter.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
C14-Glycocholic acid	Breath test for small intestine bacterial overgrowth	Oral	In-vitro	Non-imaging
C14-PABA	Pancreatic studies	Oral	In-vitro	Non-imaging
C14-Urea	Breath test to detect Helicobacter pylori	Oral	In-vitro	Non-imaging
C14-d-xylose	Breath test for small intestine bacterial overgrowth	Oral	In-vitro	Non-imaging

Chromium-51

is a gamma emitter.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
Cr51-heart scan/blood volume	[Red cell volume heart scan; sites of sequestration; gastrointestinal blood loss	IV	In-vitro	Non-imaging
Cr51-Cr³⁺	Gastrointestinal protein loss	IV	In-vitro	Non-imaging
Cr51-EDTA	Glomerular filtration rate measurement	IV	In-vitro	Non-imaging

Cobalt-57

is a gamma emitter.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
Co57-Cyanocobalamin	Gastrointestinal absorption	Oral	In-vitro	Non-imaging

Cobalt-58

is a gamma emitter.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
Co58-Cyanocobalamin	Gastrointestinal absorption	Oral	In-vitro	Non-imaging

Erbium-169

is a beta emitter.

Name	Treatment of	Route of administration
Er169-Colloid	Arthritic conditions	Intra-articular

Fluorine-18

is a positron emitter with a half-life of 109 minutes. It is produced in medical cyclotrons, usually from oxygen-18, and then chemically attached to a pharmaceutical. See PET scan.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
F18-FDG	Tumor imaging Myocardial imaging	IV	In-vivo	Imaging
F18-Sodium Fluoride	Bone imaging	IV	In-vivo	Imaging
F18-Fluorocholine	Prostate tumor imaging	IV	In-vivo	Imaging
F18-Desmethoxyfallypride	Dopamine receptor imaging	IV	In-vivo	Imaging

Gallium-67

is a gamma emitter. See gallium scan.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
Ga67-Ga³⁺	Tumor imaging	IV	In-vivo	Imaging
Ga67-Ga³⁺	Infection/inflammation imaging	IV	In-vivo	Imaging

Gallium-68

is a positron emitter, with a 68-minute half-life, produced by elution from germanium-68 in a gallium-68 generator. See also positron emission tomography.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
Ga68-Dotatoc or Dotatate	Neuroendocrine tumor imaging	IV	In-vivo	Imaging
Ga68-PSMA	Prostate cancer imaging	IV	In-vivo	Imaging

Hydrogen-3

³H or tritium is a beta emitter.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
H3-water	Total body water	Oral or IV	In-vitro	Non-imaging

Indium-111

is a gamma emitter.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
In111-DTPA	Ventriculo-peritoneal shunt	intraperitoneal injection	In-vivo	Imaging the radioactive substance
In111-DTPA	Cisternography	Intra-cisternal	In-vivo	Imaging
In111-Leukocytes	Infection/inflammation imaging	IV	In-vivo	Imaging
In111-Platelets	Thrombus imaging	IV	In-vivo	Imaging
In111-Pentetreotide	Somatostatin receptor imaging	IV	In-vivo	Imaging
In111-Octreotide	Somatostatin receptor imaging	IV	In-vivo	Imaging

Iodine-123

is a gamma emitter. It is used only diagnostically, as its radiation is penetrating and short-lived.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
I123-Iodide	Thyroid uptake	Oral or IV	In-vivo	Non-imaging
I123-Iodide	Thyroid imaging Thyroid metastases imaging	Oral or IV	In-vivo	Imaging
I123-o-Iodohippurate	Renal imaging	IV	In-vivo	Imaging
I123-MIBG	Neuroectodermal tumour imaging	IV	In-vivo	Imaging
I123-FP-CIT	SPECT imaging of Parkinson's Disease	IV	In-vivo	Imaging

Iodine-125

is a gamma emitter with a long half-life of 59.4 days. Iodine-123 is preferred for imaging, so I-125 is used diagnostically only when the test requires a longer period to prepare the radiopharmaceutical and trace it, such as a fibrinogen scan to diagnose clotting. I-125's gamma radiation is of medium penetration, making it more useful as a therapeutic isotope for brachytherapy implant of radioisotope capsules for local treatment of cancers.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
I125-fibrinogen	Clot imaging	IV	In-vivo	Imaging

Iodine-131

is a beta and gamma emitter. It is used both to destroy thyroid and thyroid cancer tissues, and also other neuroendocrine tissues when used in MIBG. It can also be seen by a gamma camera, and can serve as a diagnostic imaging tracer, when treatment is also being attempted at the same time. However iodine-123 is usually preferred when only imaging is desired.

Diagnostic

Therapeutic

Iron-59

is a beta and gamma emitter.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
Fe59-Fe²⁺ or Fe³⁺	Iron metabolism	IV	In-vitro	Non-imaging

Krypton-81m

is a gamma emitter.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging the radioactive substance
Kr81m-Gas	Lung ventilation imaging	Inhalation	In-vivo	Imaging
Kr-81m-Aqueous solution	Lung perfusion imaging	IV	In-vivo	Imaging

Lutetium-177

is a beta emitter.

Name	Treatment of	Route of administration	In-vitro / in-vivo
¹⁷⁷Lu-DOTA-TATE	gastroenteropancreatic neuroendocrine tumors	IV	In-vivo

Nitrogen-13

is a positron emitter.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
N13-Ammonia	Myocardial blood flow imaging	IV	In-vivo	Imaging

Oxygen-15

is a positron emitter.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
O15-Water	Cerebral blood flow imaging Myocardial blood flow imaging	IV bolus	In-vivo	Imaging

Phosphorus-32

is a beta emitter.

Name	Treatment of	Route of administration
P32-Phosphate	Polycythemia and related disorders	IV or Oral

Radium-223

is an alpha emitter.

Name	Treatment of	Route of administration
Ra223 cation	metastatic cancer in bone	IV

Rubidium-82

is a positron and gamma emitter.

Name	Treatment of	Route of administration
Rb-82 Chloride	Myocardial Imaging	IV

Samarium-153

is a beta and gamma emitter.

Name	Treatment of	Route of administration
Sm153-EDTMP	Bone metastases	IV

Selenium-75

is a gamma emitter.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
Se75-Selenorcholesterol	Adrenal gland imaging	IV	In-vivo	Imaging
Se75-SeHCAT	Bile salt absorption	Oral	In-vivo	Imaging

Sodium-22

is a positron and gamma emitter.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
Na22-Na⁺	Electrolyte studies	Oral or IV	In-vitro	Non-imaging

Sodium-24

is a beta and gamma emitter.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
Na24-Na⁺	Electrolyte studies	Oral or IV	In-vitro	Non-imaging

Strontium-89

is a beta emitter.

Name	Treatment of	Route of administration
Sr89-Chloride	Bone metastases	IV

Technetium-99m

is a gamma emitter. It is obtained on-site at the imaging center as the soluble pertechnetate which is eluted from a technetium-99m generator, and then either used directly as this soluble salt, or else used to synthesize a number of technetium-99m-based radiopharmaceuticals.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
Tc99m-pertechnetate	Thyroid uptake and thyroid imaging Stomach and salivary gland imaging Meckel's diverticulum imaging Brain imaging Micturating cystogram First pass blood flow imaging First pass peripheral vascular imaging	IV	In-vivo	Imaging
Tc99m-pertechnetate	Lacrimal imaging	Eye drops	In-vivo	Imaging
Tc99m-Human albumin	Cardiac blood pool imaging	IV	In-vivo	Imaging
Tc99m-Human albumin	Peripheral vascular imaging	IV	In-vivo	Imaging
Tc99m-Human albumin macroaggregates or microspheres	Lung perfusion imaging	IV	In-vivo	Imaging
Tc99m-Human albumin macroaggregates or microspheres	Lung perfusion imaging with venography	IV	In-vivo	Imaging
Tc99m-Phosphonates and phosphates	Bone imaging	IV	In-vivo	Imaging
Tc99m-Phosphonates and phosphates	Myocardial imaging	IV	In-vivo	Imaging
Tc99m-DTPA	Renal imaging First pass blood flow studies Brain imaging	IV	In-vivo	Imaging
Tc99m-DTPA	Lung ventilation imaging	Aerosol inhalation	In-vivo	Imaging
Tc99m-DMSA	Tumor imaging	IV	In-vivo	Imaging
Tc99m-DMSA	Renal imaging	IV	In-vivo	Imaging
Tc99m-Colloid	Bone marrow imaging GI Bleeding	IV	In-vivo	Imaging
Tc99m-Colloid	Lymph node imaging	Interstitial	In-vivo	Imaging
Tc99m-Colloid	Esophageal transit and reflux imaging Gastric emptying imaging	Oral	In-vivo	Imaging
Tc99m-Colloid	Lacrimal imaging	Eye drops	In-vivo	Imaging
Tc99m-HIDA	Functional biliary system imaging	IV	In-vivo	Imaging
Tc99m-Denatured red blood cells	Red cell volume Spleen imaging	IV	In-vitro	Non-imaging
Tc99m-Whole red blood cells	GI bleeding Cardiac blood pool imaging Peripheral vascular imaging	IV	In-vivo	Imaging
Tc99m-MAG3	Renal imaging First pass blood flow imaging	IV	In-vivo	Imaging
Tc99m-Exametazime	Cerebral blood flow imaging	IV	In-vivo	Imaging
Tc99m-Exametazime labelled leucocytes	Infection/inflammation imaging	IV	In-vivo	Imaging
Tc99m-Sestamibi	Parathyroid imaging Non-specific tumor imaging Thyroid tumor imaging Breast imaging Myocardial imaging	IV	In-vivo	Imaging
Tc99m-Sulesomab	Infection/inflammation imaging	IV	In-vivo	Imaging
Tc99m-Technegas	Lung ventilation imaging	Inhalation	In-vivo	Imaging
Tc99m-Human immunoglobulin	Infection/inflammation imaging	IV	In-vivo	Imaging
Tc99m-Tetrofosmin	Parathyroid imaging Myocardial imaging	IV	In-vivo	Imaging
Tc99m-ECD	Brain imaging-----	IV	In-vivo	Imaging

Thallium-201

is a gamma emitter.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
Tl201-Tl⁺	Non-specific tumor imaging Thyroid tumor imaging Myocardial imaging Parathyroid imaging	IV	In-vivo	Imaging

Xenon-133

is a gamma emitter.

Name	Investigation	Route of administration	In-vitro / in-vivo	Imaging / non-imaging
Xe133-gas	Lung ventilation studies	Inhalation	In-vivo	Imaging
Xe133 in isotonic sodium chloride solution	Cerebral blood flow	IV	In-vivo	Imaging

Yttrium-90

is a beta emitter.

Name	Treatment of	Route of administration
Y90-Silicate	Arthritic conditions	Intra-articular
Y90-Silicate	Malignant disease	Intracavitary

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