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Dr. Raymond Taillefer

Nuclear Medicine
Saint-Jean-sur-Richelieu, QC, Canada
43 years experience male

Locations

Office

Saint-Jean-sur-Richelieu, null

Address

920 Boul. Du Seminaire nord, null, Saint-Jean-sur-Richelieu
Directions

About

Specialties
Doctors may have more than one area of specialty interest. Board certification in a specialty area means the doctor has completed formal training and has practice experience in that specialty, and has passed the certification examination from the corresponding accredited medical specialty board.

Nuclear Medicine

Languages spoken

English

Doctor Q&A

63 Answers
5 Agrees
The number of answers this doctor has agreed with.
A 46-year-old member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Detection of angina: A myocardial perfusion study is performed in order to detect blockage of the coronary (heart) arteries using intravenous injection of radiotracers whi... Read More
A 17-year-old female asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Probably not: The effect of several medications on the gastric emptying studies are currently under investigation. So far, there is no clear evidence that MiraLAX (... Read More
A 25-year-old female asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
48 hours.: Hida is labeled to 99mtc-technetium, which is a radioisotope with a physical half-life of 6 hours, meaning that the radioactivity decreases by 50% eve... Read More
A 29-year-old male asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Probably yes: A normal gallbladder ejection fraction on a hida scan should be more than 40%. At 12%, this means that you have a dyskinesia of your gallbladder which... Read More
A 53-year-old female asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Usually, yes.: The gallbladder ejection fraction should be more than 40%, meaning that after a meal, more than 40% of the content of the gallbladder (bile) is evacu... Read More
A 29-year-old male asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Highly accurate: The gallbladder ejection fraction should be more than 40%. This means that more than 40% of the gallbladder content is evacuated when it contracts. In... Read More
A 37-year-old female asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
No irritation: The radiotracer used for a hepatobiliary scan ( 99mtc-hida) is a very safe agent with only a fraction of mg injected . This product has not been repor... Read More
A 37-year-old member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Various possibilitie: Thyroid uptake must be interpreted with the results of some blood tests such as TSH , T3 (liothyronine) and T4 values and the clinical context. Usuall... Read More
A 39-year-old member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Two steps procedure: A lung scintigraphy has two components. The ventilation part (v of v/q) which consists in inhalation of 99mtc-gaz or aerosols and the perfusion part (... Read More
A member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Pulmonary emboli: The main reason to perform a radionuclide lung study for both ventilation (=v) and perfusion ( =q) is to detect lung embolism, usually caused by a blo... Read More
A 28-year-old male asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Hepatobiliary scan: A hida scan or hepatobiliary scan is performed following intravenous administration of 99mtc-hida. This allows the specialist in nuclear medicine to l... Read More
A 48-year-old member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Between 3-4 hours: A bone scan can be performed in 4 steps. The first one is the blood flow followed by the immediate bone study, according to the reason of doing the te... Read More
A 17-year-old male asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Gallbladder disease: When the ejection fraction of the gallbladder is less than 40%, this usually caused by gallbladder dysfunction ( or dyskinesia) which may cause your ... Read More
A 17-year-old male asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Cholecystokinine: The radioactive material injected during a hida scan is the 99mtc-hida while the non -radioactive part is usually cholecystokinine which will be helpf... Read More
A 52-year-old female asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Patient preparation: Your second scan with a gallbladder ejection fraction of 53% is normal. Nonvisualization of gb after 4 hours is usually related to an obstruction of t... Read More
A 58-year-old female asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
X-ray or bone scan: If you are having pain in both hips, it is unlikely that this pain is related to bone metastases from your breast cancer you had more than 6 years ago... Read More
A 31-year-old female asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Biopsy: Most of the cold nodules on thyroid scans are benign but cancer has to be ruled out. Thyroid biopsy is a relatively noninvasive and simple procedure t... Read More
A 62-year-old female asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Simple non invasive.: Bone scan is a very simple and noninvasive test involving the intravenous injection ( usually into an arm or hand vein) of 99mtc-mdp, a very common ra... Read More
A 35-year-old member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Yes: Make-up will not cause any interference with the gamma rays used during a bone scintigraphy.
A 34-year-old member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Normal finding: The radiotracer used for bone scans ( 99mtc-mdp) is mainly excreted by the kidneys. Therefore, not seeing the kidneys would be abnormal. Kidneys are a... Read More
A 33-year-old member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Yes and no.: The degree of tracer uptake depends on several factors such as the size and the type of tumor. Bone scan detects the bone metabolism surrounding the t... Read More
A 35-year-old female asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Yes and no: Bone scintigraphy is a very sensitive way to detect this type of enthesopathy. However, the lesion can be seen for several months and sometimes many y... Read More
A 31-year-old male asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Yes and no: There are several potential causes for abdominal pain or discomforts. A 99mtc-hida scan is performed to detect intra or extrahepatic billiary obstruc... Read More
A 41-year-old member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Different agents: Renal scintigraphy involves an intravenous injection of a radionuclide. The main preparation is the hydration and sometimes stopping specific medicat... Read More
A 37-year-old member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
No: There is no medical imaging test 100% accurate so far. Furthermore, there is a very large spectrum of nuclear medicine procedures that can be performe... Read More
A 41-year-old member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
10-20 mSv approx.: The thallium-201 dose administered varies from one patient to another according to the patient's weight. The radiation from a standard dose varies fro... Read More
A 34-year-old member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Cardiac scan: Myocardial perfusion scan refers to the intravenous administration of a radiotracer which is distributed in proportion of the blood flow to the heart.... Read More
A 61-year-old female asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
No, its different: The thyroid scan is performed to make a diagnosis on the status of the thyroid gland ( hyperthyroidism, thyroid nodules, thyroiditis, evaluation of go... Read More
A 73-year-old male asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
More than 40%: After administration of fatty meal or cck (cholecystokinin) intravenous injection , the ejection fraction of the gallbladder should be equal or more t... Read More
A 28-year-old male asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
MIBI, Thallium scan: Myocardial perfusion study refers to the use of radionuclide to evaluate the degree of blood flow (also called perfusion)in the arteries of the heart ... Read More
A 34-year-old member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
other G.I problems: If the ultrasound and hida scan are completely normal, it is very likely that you do not have any biliary tree problems. However, many other diseases ... Read More
A 17-year-old female asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Standard procedure: Gastric emtying studies are standardized procedures because some variations in the meals may affect the values of emtying and therefore difficult to c... Read More
A 28-year-old male asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Nuclear medicinetest: A nuclear scan refer to a medical imaging study performed in nuclear medicine, using intravenous, oral administration or inhalation of radionuclide tr... Read More
A 58-year-old male asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Usually, yes.: In the case of reflex sympathetic dystrophy (rsd) we usually performed a "triple phase" bone scan, the first phase is the bone blood flow study and t... Read More
A 30-year-old member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Yes: Bone scan is a very sensitive way to detect local changes in bone metabolism but is less specific to define the type of lesions in various circumstanc... Read More
A 47-year-old member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
No: Very rarely a chest x-ray can show typical signs of plumonary emboli. Chest-x-ray is performed to rule out other causes of symptoms such as pneumonia ... Read More
A 52-year-old male asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Hyperthyroidism: Increased iodine uptake usually is secondary to hyperthyroidism which is an increased function of the thyroid, accompanied by decreased TSH and increa... Read More
A 28-year-old male asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Thyroid imaging: A thyroid nuclear scan is an imaging study of the thyroid gland using radioiosotopes such as iodine 131, iodine 123, or 99mtc-pertechnetate. Following... Read More
A 28-year-old male asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Liver veins obstruct: Budd chiari syndrome is defined as the clinical presentation ( symptoms) related to the occlusion or obstruction of the hepatic ( liver) veins. Most o... Read More
A 31-year-old female asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Depends on symptoms: Cardiac echography may sometimes be technically difficult to perform. The determination of the left ventricle ejection fraction ( i.e. The relative am... Read More
A 35-year-old female asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Repeat hida scan: The ultrasound study is negative and the hida scan seems to be negative as well. However, the ejection of the gallbladder ( 36%) is in the lower limi... Read More
A 28-year-old male asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Bone scan: Bone scintigraphy ( or radionuclide bone scan) is the study of bone metabolism obtained after intravenous injection of a weakly radioactive material (... Read More
A 44-year-old member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Radioisotope used.: There are three basic ways of reducing radiation exposure" 1- decrease exposure time, 2- increase the distance, 3- adequate shielding ( not practical ... Read More
A 33-year-old member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Hydration and rest: After a treadmill stress test or a pharmacological stress test, patients sometimes feel tired, therefore rest is recommended. A good hydration will he... Read More
A 49-year-old member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Normal uptake: This percentage refers to the percentage of radioiodine uptake at 24 hours after its administration. In your case, this means that 13.8% of the radioa... Read More
A 63-year-old female asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Yes: Before having a 99mtc-hida scan to evaluate gallbladder ejection fraction ( function) or patency of intra or extra biliary tree, it is always recomman... Read More
A 52-year-old male asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
One or two days: The thyroid scan can be performed either with iodine 123 or iodine 131. The scan itself is very rapid ( approximately 10 minutes). According to the ty... Read More
A 44-year-old member asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
These are different: A radionuclide bone scan is performed with 99mtc-mdp and is used to detect bone infection, trauma, metastases, inflammation etc. Radioactive iodine wi... Read More
A 66-year-old male asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Yes: Several tests can help making the diagnosis and evaluating the extent of heart scar tissues such as ekg, echocardiogram, radionuclide ventriculography... Read More
A 42-year-old male asked:
Dr. Raymond Taillefer
Nuclear Medicine 43 years experience
Normal hida scan: A normal gallbladder ejection fraction is more than 50%. It is normal in your case. Unless you have a situs invertus ( in this case the liver on the l... Read More

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Testimonials
Recommendations and Thank you notes are endorsements given from patients or other doctors.

3
Recommendations
86
Thank you notes
Jul 17, 2013
great answers. Very helpful. thank you!
HealthTap member
Mar 30, 2015
Dr. Taillefer is an amazing doctor! #nationaldoctorsday2015 #virtualflower1
HealthTap member
Mar 31, 2015
Dr. Taillefer is an amazing doctor! #nationaldoctorsday2015 #virtualflower1
HealthTap member
Thank you, your answer was very helpful! Very thanks will going again with my gastro to perform the hida again.
HealthTap member
Your answer was very helpful! Thanks :) thankyou dr tailefer
HealthTap member
Thank you, your answer or tip was very helpful!

Education & Training

Medical/Graduate school

University of Montreal Faculty of Medicine
Graduated 1979MD

Residency

Hotel Dieu Hospital

Residency

Hopital Maisonneuve-Rosemont

Residency

Hopital du Sacre-CÅ“ur de Montreal

Awards

Herman L.B.Blumgart Award from the Cardiovascular Council of the Society of Nuclear Medicine

Affiliations

Professor of Nuclear Mexicine, University of Montreal
90,000 U.S. doctors in 147 specialties are here to answer your questions, provide medical advice, write prescriptions, and more.
Answer emailed
in 24 hours or less