SINGLE-PHOTON RADIOPHARMACEUTICALS OTHER THAN TC-99m Flashcards
Iodine 131
Energy: __ keV
Half-life:__days
364
8
Presence of beta particle emissions which leads to a higher patient dose
Used primarily for thyroid cancer therapy and treatment of hyperthyroidism
Iodine 131
Iodine 123
Energy:___ keV
Half-life: ____hours
159
13.2
Suited for imaging with the gamma camera
Not readily available
Iodine123
Xenon-133
Advantage over Tc99m DTPA:
Safe to use in patients with chronic obstructive lung disease
Xenon 133 & 127
Disadvantage over Tc99m DTPA:
Not readily available
xenon 133 energy & half -life
: 81 keV
5.2 days
Xenon-127
Energy: ___and ___ keV
172, 203 & 375
xenon 127 half life
36 days
FLUORINE 18
production source:
mode of decay:
half-life:
cyclotron
positron emission
110
carbon 11
production source:
mode of decay:
half-life:
cyclotron
positron emission
20
nitrogen 13
production source:
mode of decay:
half-life:
cyclotron
positron emission
10
oxygen 15
production source:
mode of decay:
half-life:
cyclotron
positron emission
2
Galium 68
production source:
mode of decay:
half-life:
Generator
(Germanium 68)
positron emission
68
Rubidium 82
production source:
mode of decay:
half-life:
Generator
(Strontium 82)
Positron emission
1.3
Thallium 201
Energy: ___and __ keV
Half-life: ___ hours
135 & 167
73.1
Used for cardiac perfusion imaging
Energies 135 and 167 keV occurs in low abundance that results in poor imaging results.
Not readily available
Thallium 201
Indium 111
Energy: ___ and___ keV
Half-life: ___ days
172 & 245
2.8
Detects neuroendocrine tumors
Indium 111 pentetreotide (OctreoScan)
Krypton 81m
Energy:__ keV
Half life:___ seconds
190
13
Very expensive
Krypton 81m
4 Single Photon Radionuclide other
than Tc-99m
•
Radioiodine I-131 and I-123
• Indium – 111
• Thallium-201
• Radioactive inert gas
