Myoview Tetrofosmin 1.38 mg Injection, Powder, Lyophilized, For Solution, 5 vials
🆔 Identity & classification
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🏭 Manufacturer & labeler
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🩺 Clinical
Patient education
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💊 What it looks like
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🧪 Inactive Ingredients / Excipients
Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.
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3 mg
UNII PQ6CK8PD0R
Ascorbic acid, also known as vitamin C, is a white crystalline powder. It serves as an antioxidant to prevent degradation of other ingredients and may also function as a preservative in the formulation.
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11 mg
UNII 8MDF5V39QO
A white powder form of baking soda that acts as a buffer and pH regulator in medicines. It helps maintain the right acid-base balance and may aid tablet disintegration.
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0.09 mg
UNII 1BQV3749L5
Stannous chloride is a tin-based chemical compound used as a reducing agent and antioxidant in pharmaceuticals. It helps prevent oxidation of active ingredients and stabilizes certain formulations, particularly in products requiring preservation of potency.
3 inactive ingredients listed in the exact product block matched to this NDC.
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ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.Inactive ingredient FAQ
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💲 Pricing
A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.
| Price system | Per mL | Per package |
|---|---|---|
| Retail pharmacies payNADAC · weekly | Not in the retail survey — common for institutional, discontinued, or low-volume packs. | |
| Medicaid paysCMS SDUD · 12 mo | No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data. | |
| Medicare drug plans payPart D · quarterly | No Part D plan price is available for this NDC in our data. | |
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🔁 Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| Myoview 1.38 mgthis 17156-0026-30 | Medi-Physics | 5 vials | — | — | Discontinued | — |
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⏳ Availability & generic status
We did not find an FDA-approved generic match for this exact strength, form and route. Patent/protection dates below may affect future generic timing.
Why the date isn’t exact: Generic timing can change because patents may be challenged, settled, licensed, added, removed, or worked around with a narrower label — and FDA approval does not always mean a pharmacy can get the generic today.
🛈 What do these terms mean?
- Patent
- Legal protection listed in the Orange Book that may delay generic approval or launch. Issued by the U.S. Patent & Trademark Office.
- Substance patent
- Covers the active drug molecule itself — the hardest to design around. A generic generally can’t launch until it expires.
- Formulation (product) patent
- Covers a specific formulation or dosage form. A generic can sometimes work around it with a different formulation.
- Method-of-use patent
- A patent covering one specific approved use of the drug — not necessarily the whole molecule. A generic can sometimes launch with a “skinny label” that carves out the protected use and keeps the others.
- Skinny label
- A generic label that omits a still-patented use when the FDA allows it — letting a generic reach the market for the unprotected uses.
- Exclusivity
- FDA-granted marketing protection, separate from patents — e.g. 5-yr new chemical entity, 7-yr orphan drug, or a +6-month pediatric extension.
- Paragraph IV
- A generic applicant’s formal challenge to a listed patent. It can potentially lead to earlier generic entry, but often involves litigation or a settlement.
- RLD / RS
- Reference Listed Drug — the brand product the FDA uses as the reference for generic applications. Reference Standard — the product the FDA expects generics to compare against in bioequivalence testing.
- TE / AB rating
- FDA therapeutic-equivalence rating. An AB rating generally means the FDA considers a generic therapeutically equivalent to — and substitutable for — the brand.
- LOE (loss of exclusivity)
- The latest patent or exclusivity currently listed — the loss-of-exclusivity / latest-listed-protection date shown on this page. Paragraph-IV challenges and settlements can move the real date earlier; FDA approval and a manufacturer’s decision to market can move it later.
Built from the FDA Orange Book. The bars above are scaled to each protection’s expiry; the red LOE marker is the last one to lapse.
| Patent | Type | Use code | Expires |
|---|---|---|---|
| US 9549999 ↗ | Drug product | — | Mar 10, 2030 |
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📦 Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Status |
|---|---|---|---|
| 17156-0026-30 You're viewing this | 5 VIAL in 1 KIT (17156-026-30) / 1 INJECTION, POWDER, LYOPHILIZED, FOR SOLUTION in 1 VIAL | 2009-02-26 | Discontinued by firm |
🧭 About this NDC listing & data coverage
Kit / multi-component package
This NDC identifies a kit — a package containing more than one component. Structured data (pricing, ingredients, equivalents) is often reported per component rather than for the kit NDC itself, which can make this page look thinner than the components' own pages.
What data is (and isn’t) available for this NDC — tap to expand
| NDC identity (package / product / labeler codes) | ✓ Available |
| Labeler | ✓ Available |
| Product & package description | ✓ Available |
| Marketing category & status | ✓ Available |
| Active ingredient / dosage form / route | ✓ Available |
| FDA label (SPL via DailyMed) | ✓ Available |
| Package photos | ✓ Available |
| Inactive ingredients (structured) | ✓ Available |
| NADAC pharmacy acquisition price (CMS) | — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey. |
| Orange Book / therapeutic-equivalence data | ✓ Available |
| HCPCS J-code billing crosswalk | — Not published for this NDC Most self-administered / retail products have no J-code — that is normal. |
| Medicaid utilization (CMS SDUD) | — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold. |
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📄 Full prescribing information FDA SPL
🎯 Indications and Usage ▾
1 INDICATIONS AND USAGE MYOVIEW 30 mL is a kit for the preparation of technetium Tc99m tetrofosmin for injection. Technetium Tc99m tetrofosmin injection is a radioactive diagnostic agent indicated for the following: Myocardial perfusion imaging under rest and/or exercise or pharmacologic stress conditions to delineate regions of reversible myocardial ischemia or infarcted myocardium in patients with known or suspected coronary artery disease ( 1.1 ) Assessment of left ventricular function (left ventricular ejection fraction and wall motion) in patients with known or suspected heart disease ( 1.2 )
1.1Myocardial Perfusion Imaging Myocardial perfusion imaging under rest and/or exercise or pharmacologic stress conditions to delineate regions of reversible myocardial ischemia or infarcted myocardium in patients with known or suspected coronary artery disease.
1.2Ventricular Function Imaging MYOVIEW is indicated for assessment of left ventricular function (left ventricular ejection fraction and wall motion) in patients with known or suspected heart disease.
⏱️ Dosage and Administration ▾
2 DOSAGE AND ADMINISTRATION Use appropriate radiation safety measures and aseptic technique during preparation and handling ( 2.1 , 2.3 ) The recommended dose range for MYOVIEW for rest or stress imaging is 185 to 1,221 megabecquerels (MBq) [5 to 33 millicuries (mCi)] by intravenous administration ( 2.2 ) When rest and stress injections are administered on the same day, the first dose should be 185 to 444 MBq (5 to 12 mCi) followed by the second dose of 555 to 1,221 MBq (15 to 33 mCi) given approximately 1 to 4 hours later ( 2.2 ) The recommended dose range for MYOVIEW for ventricular function assessment is 185 to 1,221 MBq (5 to 33 mCi) as an intravenous injection ( 2.2 ) See Full Prescribing Information for instructions for preparation and determination of radiochemical purity ( 2.4 , 2.5 ) Imaging may begin 15 minutes following administration of the agent ( 2.6 )
2.1Radiation Safety – Drug Handling Technetium Tc99m tetrofosmin is a radioactive drug and should be handled with appropriate safety measures to minimize radiation exposure during administration [ see Warnings and Precautions (5.2) ] . Use waterproof gloves and effective shielding, including syringe shields, when preparing and administering technetium Tc99m tetrofosmin injection.
2.2Recommended Dosage The recommended dose range for MYOVIEW is 185 to 1,221 MBq (5 to 33 mCi) by intravenous administration for rest and stress imaging. When rest and stress intravenous injections are administered on the same day, the first dose should be 185 to 444 MBq (5 to 12 mCi) and followed by the second dose of 555 to 1,221 MBq (15 to 33 mCi) given approximately 1 to 4 hours later. The recommended dose range for MYOVIEW is 185 to 1,221 MBq (5 to 33 mCi) by intravenous administration as an intravenous injection for ventricular function assessment.
2.3Administration Instructions Use aseptic technique for all drug preparation and handling. Measure the dose in a suitable radioactivity calibration system immediately prior to intravenous administration. Visually inspect the drug for particulate matter and discoloration prior to administration.
Do not use or administer the drug if there is evidence of particulate matter or discoloration. Instruct patients to remain hydrated and void frequently following administration to decrease radiation exposure [ see Warnings and Precautions (5.2) ].
2.4Instructions for Preparation The technetium Tc99m labeling reaction involved in the preparation of MYOVIEW Injection depends on maintaining tin in the divalent (reduced) state. Any oxidant present in the sodium pertechnetate Tc99m used may adversely affect the quality of the preparation. Sodium pertechnetate Tc99m containing oxidants should not be used for the preparation of the labeled product.
Elute the technetium generator with sodium chloride injection, USP. Insert a venting needle (standard 18 to 26 gauge needle, not provided) through the rubber septum of the shielded vial containing the lyophilized powder. Inject no more than 89 GBq (2.4 Ci) of technetium Tc99m generator eluate into the shielded vial.
Use sodium chloride injection, USP as a diluent. Inject 10 to 30 mL to achieve a radioactive concentration no greater than
2.96GBq/mL (80 mCi/mL) in the vial. If a venting needle is not used, before removing the syringe from the vial, withdraw an adequate volume of gas from above the solution to avoid over-pressurizing the vial. Remove the venting needle.
Mix gently for 10 seconds to ensure complete dissolution of the powder. Incubate at room temperature for 15 minutes. Assay the total activity using a suitably calibrated instrument; complete the user radiation label and attach it to the vial.
Measure the pH of the prepared injection and verify it is between 7.5 to 9.0. Store the radiolabeled MYOVIEW 30 mL vial and withdrawals for injection at 2° to 25°C (36° to 77°F) and use within 12 hours of preparation.
2.5 Determination of Radiochemical Purity Obtain the following materials : SA TLC strip…
💊 Dosage Forms and Strengths ▾
3 DOSAGE FORMS AND STRENGTHS Kit for the preparation of technetium Tc99m tetrofosmin injection: 30 mL multiple-dose, clear, glass vial with a white sterile, non-pyrogenic, lyophilized powder of 1.38 mg tetrofosmin, 0.09 mg stannous chloride dihydrate, 1.92 mg disodium sulphosalicylate, 3 mg sodium D-gluconate, 11 mg sodium hydrogen carbonate, and 3 mg ascorbic acid. Following radiolabeling with the Tc99m eluate, MYOVIEW is a clear solution not exceeding 2,960 MBq/mL (80 mCi/mL) of Tc99m. Kit for preparation injection: lyophilized powder containing 1.38 mg tetrofosmin in a multiple-dose vial after radiolabeling with Tc99m eluate, clear solution not exceeding 2,960 MBq/mL (80 mCi/mL).
( 3 )
⛔ Contraindications ▾
4 CONTRAINDICATIONS None. None ( 4 )
⚠️ Warnings and Cautions ▾
5 WARNINGS AND PRECAUTIONS Risk with exercise or pharmacologic stress: Continuous cardiac monitoring should be performed in studying patients with known or suspected coronary artery disease ( 5.1 ) When pharmacologic stress is selected as an alternative to exercise, perform the procedure in accordance with the pharmacologic stress agent's prescribing information ( 5.1 ) Appropriate safety measures should be used to minimize radiation exposure to clinical personnel and to the patient consistent with proper patient management ( 2.1 , 5.2 )
5.1Risks Associated with Exercise or Pharmacologic Stress Patients evaluated with exercise or pharmacologic stress may experience serious adverse reactions such as myocardial infarction, arrhythmia, hypotension, bronchoconstriction, and cerebrovascular reactions such as headache, paraesthesias, convulsions, somnolence and cerebrovascular accident, including hemorrhage. Perform stress testing in the setting where cardiac resuscitation equipment and trained staff are readily available. When pharmacologic stress is selected as an alternative to exercise, perform the procedure in accordance with the pharmacologic stress agent's prescribing information.
5.2Radiation Risks Technetium Tc99m contributes to a patient's overall long-term cumulative radiation exposure. Long-term cumulative radiation exposure is associated with an increased risk of cancer. Ensure safe handling and preparation radiolabeling procedures to protect patients and health care workers from unintentional radiation exposure.
Encourage adequate hydration; instruct patients to void when the examination is completed and as often thereafter as possible [ see Dosage and Administration (2.1) and (2.3) ] .
5.3Hypersensitivity Reactions Hypersensitivity reactions including anaphylaxis, dyspnea, bronchospasm, throat tightness, coughing, tachycardia, chest pain, hypotension, abdominal pain, and cutaneous reactions (rash, urticaria, pruritus, erythema, and swelling or angioedema) have been observed after the administration of MYOVIEW. Always have cardiopulmonary resuscitation equipment and personnel available and monitor all patients for hypersensitivity reactions.
🤒 Adverse Reactions ▾
6 ADVERSE REACTIONS The following clinically significant adverse reactions are described elsewhere in the labeling: Hypersensitivity Reactions [ see Warnings and Precautions (5.3) ] Most common adverse reactions (incidence < 1%) after MYOVIEW injection: Cardiovascular: angina, hypertension, torsades de pointes. Gastrointestinal: vomiting, abdominal discomfort. Hypersensitivity: cutaneous allergy, hypotension, dyspnea.
Special Senses: metallic taste, burning of the mouth, smell alteration. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact GE Healthcare at 1-800-654-0118 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch .
6.1Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of MYOVIEW cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. Adverse reactions were evaluated in clinical studies (using an exercise/rest protocol) of 764 adults (511 men) with a mean age of 58.7 years (range 29 to 94 years). The subjects received a mean dose of 285 MBq (7.7 mCi) on the first injection and 829 MBq (22.4 mCi) on the second injection of MYOVIEW.
After MYOVIEW injection, angina occurred in 4 subjects, ventricular tachycardia in 1 subject, and respiratory arrest in 1 subject. The following reactions were noted in less than 1% of subjects: Cardiovascular: angina, hypertension, torsades de pointes. Gastrointestinal: vomiting, abdominal discomfort.
Hypersensitivity: cutaneous allergy, hypotension, dyspnea. Special Senses: metallic taste, burning of the mouth, smell alteration. In four studies,438 adults (232 men and 205 women: gender was not recorded for one subject) with a mean age of 65 years (range 27 to 97 years) received a single pharmacologic stress agent.
The subjects received a mean dose of 7 to 8 mCi on the rest/first injection and 22 to 34 mCi on the stress/second injection. Among the 438 subjects, 319 subjects (73%) experienced an adverse reaction. Reactions occurring in ≥1% of the subjects included angina (39%), flushing (36%), dyspnea (28%), headache (14%), abdominal pain (11%), dizziness (7%), palpitations (2%), nausea (2%), hypotension (1%) and pain (1%).
Events occurring in <1% include cough, arrhythmia, bronchospasm, ECG abnormalities, hypertension, vomiting and asthenia.
6.2Postmarketing Experience The following adverse reactions have been identified during post approval use of MYOVIEW. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. The most common adverse reactions reported included: rash, urticaria, abnormal vision, hypersensitivity reactions, and fever.
👥 Use in Specific Populations ▾
8 USE IN SPECIFIC POPULATIONS Advise the pregnant woman of the potential risk to the fetus based on the radiation dose from technetium Tc99m and the gestational timing of exposure ( 8.1 ) Lactation - A lactating woman should pump and discard breastmilk for 60 hours after technetium Tc99m tetrofosmin administration ( 8.2 )
8.1Pregnancy Risk Summary There are no data with technetium Tc99m tetrafosmin use in pregnant women to inform any drug associated risks. Animal reproduction studies with technetium Tc99m tetrofosmin have not been conducted. However, all radiopharmaceuticals have the potential to cause fetal harm depending on the fetal stage of development and the magnitude of the radiation dose.
If considering technetium Tc99m tetrafosmin administration to a pregnant woman advise the pregnant woman of risk to the fetus. The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes.
In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively.
8.2Lactation Risk Summary Technetium Tc99m tetrofosmin is present in human milk in small amounts (<1% of maternal dose). There are no data available regarding the effects of technetium Tc99m tetrofosmin on the breastfed infant or on milk production. The developmental and health benefits of breastfeeding should be considered along with the mother's clinical need for MYOVIEW and any potential adverse effects on the breastfed child from MYOVIEW or from the underlying maternal condition.
Clinical Considerations To decrease radiation exposure to the breastfed infant, advise a lactating woman to pump and discard breast milk for 60 hours (10 half-lives) after technetium Tc99m tetrofosmin administration.
8.4Pediatric Use Safety and effectiveness in pediatric patients have not been established.
8.5Geriatric Use Of 2,300 subjects in clinical studies of MYOVIEW, 1,053 (46%) were 65 or older and 270 (12%) were 75 or older. No overall differences in safety were observed between these subjects and younger subjects, and other reported clinical experience has not identified differences in responses between elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out.
🤰 Pregnancy ▾
8.1Pregnancy Risk Summary There are no data with technetium Tc99m tetrafosmin use in pregnant women to inform any drug associated risks. Animal reproduction studies with technetium Tc99m tetrofosmin have not been conducted. However, all radiopharmaceuticals have the potential to cause fetal harm depending on the fetal stage of development and the magnitude of the radiation dose.
If considering technetium Tc99m tetrafosmin administration to a pregnant woman advise the pregnant woman of risk to the fetus. The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes.
In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2 to 4% and 15 to 20%, respectively.
🧒 Pediatric Use ▾
8.4Pediatric Use Safety and effectiveness in pediatric patients have not been established.
🧓 Geriatric Use ▾
8.5Geriatric Use Of 2,300 subjects in clinical studies of MYOVIEW, 1,053 (46%) were 65 or older and 270 (12%) were 75 or older. No overall differences in safety were observed between these subjects and younger subjects, and other reported clinical experience has not identified differences in responses between elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out.
🧬 Clinical Pharmacology ▾
12 CLINICAL PHARMACOLOGY
12.1Mechanism of Action Technetium (99mTc) tetrofosmin is a lipophilic, cationic complex which diffuses passively through the cell membrane and is locally retained actively due to the presence of intact mitochondria reflecting the presence of viable cells. After intravenous injection, it is distributed within the myocardium according to myocardial perfusion and viability.
12.2Pharmacodynamics The relationship between Tc99m tetrofosmin plasma concentrations and successful imaging has not been explored in clinical trials.
12.3Pharmacokinetics Uptake in the myocardium is dependent on coronary flow and reaches a maximum of 1.2% of the injected dose (i.d.) at 5 minutes and 1% of the i.d. at 2 hours, respectively. Background activities in the blood, liver and lung were less than 5% of the administered activity in whole blood at 10 minutes post-injection, less than 4.5% i.d., after 60 minutes, and less than 2% i.d. after 30 minutes. Elimination Approximately 66% of the injected activity is excreted within 48 hours post-injection, with approximately 40% excreted in the urine and 26% in the feces.
🧬 Mechanism of Action ▾
12.1Mechanism of Action Technetium (99mTc) tetrofosmin is a lipophilic, cationic complex which diffuses passively through the cell membrane and is locally retained actively due to the presence of intact mitochondria reflecting the presence of viable cells. After intravenous injection, it is distributed within the myocardium according to myocardial perfusion and viability.
📦 How Supplied / Storage and Handling ▾
16 HOW SUPPLIED/STORAGE AND HANDLING
16.1How supplied Five (5) multiple-dose kits, each containing a 30 mL glass vial with a sterile, non-pyrogenic, lyophilized powder containing 1.38 mg tetrofosmin, 0.09 stannous chloride dihydrate, 1.92 mg disodium sulphosalicylate, 3 mg sodium D-gluconate, 11 mg sodium hydrogen carbonate and 3 mg ascorbic acid. NDC 17156-026-30 The radionuclide is not part of the kit. Before radiolabeling with Tc99m, the contents of the kit are not radioactive.
16.2Storage and Handling Store the kit at 2° to 8°C (36° to 46°F), protected from light. Store the radiolabeled vial at 2° to 25°C (36° to 77°F), using appropriate radiation shielding. Use within 12 hours of preparation.
This reagent kit is approved for use by persons under license by the Nuclear Regulatory Commission or the relevant regulatory authority of an Agreement State; store and dispose of technetium Tc99m tetrofosmin in accordance with these regulations.
📦 Storage and Handling ▾
16.2Storage and Handling Store the kit at 2° to 8°C (36° to 46°F), protected from light. Store the radiolabeled vial at 2° to 25°C (36° to 77°F), using appropriate radiation shielding. Use within 12 hours of preparation.
This reagent kit is approved for use by persons under license by the Nuclear Regulatory Commission or the relevant regulatory authority of an Agreement State; store and dispose of technetium Tc99m tetrofosmin in accordance with these regulations.
📋 Description ▾
11 DESCRIPTION
11.1Chemical Characteristics MYOVIEW 30 mL is a kit for the preparation of technetium Tc99m tetrofosmin injection for intravenous use. Technetium Tc99m tetrofosmin is a radioactive diagnostic agent. Each multiple-dose 30 mL glass vial contains a sterile, non-pyrogenic, lyophilized powder of 1.38 mg tetrofosmin [6,9-bis(2-ethoxyethyl)-3,12-dioxa-6,9-diphosphatetradecane], 0.09 mg stannous chloride dihydrate, (minimum stannous tin 0.015 mg; total stannous and stannic tin 0.0522 mg) 1.92 mg disodium sulphosalicylate, 3 mg sodium D-gluconate, and 11 mg sodium hydrogen carbonate, and 3 mg ascorbic acid.
The lyophilized powder is sealed under a nitrogen atmosphere with a rubber closure. The product contains no antimicrobial preservative. The chemical formula of tetrofosmin is C 18 H 40 O 4 P 2 with the following structural formula: When sterile, pyrogen-free sodium pertechnetate Tc99m in isotonic saline is added to the vial, a Tc99m complex of tetrofosmin is formed.
The radiolabeled product is a clear solution and the pH is in the range of 7.5 to 9.0. Chemical Structure
11.2Physical Characteristics Technetium Tc99m decays by isomeric transition with a physical half-life of 6 hours. Photons that are useful for imaging studies are listed in Table 2. Table 2 Principal radiation emission data - technetium Tc99m Radiation Mean % disintegration Mean energy (keV) Gamma 2 88.5 140.5
11.3External Radiation The air-kerma-rate (exposure-rate) constant for technetium Tc99m is 5.23 m 2 ∙pGy∙(MBq) –1 ∙s –1 [0.795 cm 2 ∙R∙(mCi) –1 ∙h –1 ]. A range of values for the relative radiation attenuation by various thicknesses of Pb shielding is shown in Table 3. For example, the use of 3 mm thick Pb will decrease the external radiation exposure by a factor of approximately 1,000.
Table 3 Radiation attenuation by lead shielding Shield thickness (Pb) mm Factor of attenuation 0.25 0.5 1 10 -1 2 10 -2 3 10 -3 4 10 -4 5 10 -5 To correct for physical decay of this radionuclide, the fractions that remain at selected intervals relative to the time of calibration are shown in Table 4. Table 4 Physical decay chart - Tc99m half-life 6 hours Hours Fraction Remaining Hours Fraction Remaining 0 Calibration time (time of preparation) 1.000 7 0.446 1 0.891 8 0.397 2 0.794 9 0.354 3 0.707 10 0.315 4 0.630 11 0.281 5 0.562 12 0.250 6 0.500 24 0.063
💬 Information for Patients ▾
17 PATIENT COUNSELING INFORMATION Instruct patients to remain hydrated and void frequently following administration to decrease radiation exposure. Advise a lactating woman to pump and discard breast milk for 60 hours (10 half-lives) after technetium Tc99m tetrofosmin administration to decrease radiation exposure to the breastfed infant.