Doctor insights on:
Which Result Is More Reliable Doppler Or Cta Of Neck Carotid For A Patient Of Tia Symptoms
What is a better test for coronary artery blockage.... A CCTA ct heart of coronaries or a stress echo? Is either 1 more accurate? Both non invasive...
Coronary: In general you get better info with CT at the expense of being exposed to a lot of X Ray radiation ...Read more
Transient Ischemic Attack (Mini Stroke) (Definition)
A condition where a blood vessel in the brain is temporarily blocked by a blood clot, causing neurologic symptoms such as weakness in an arm or leg, or sensory changes.The symptoms are similar to those from a stroke, but are temporary, disappearing within minutes after the clot breaks apart. ...Read more
Is it possible that a shunt of the carotid artery produce a positive test result on transcranial doppler?
Which is the most accurate test to measure stenosis of
the Carotid Arteries expressed in percentage or grading , CT ,MRI, CTA or Ultrsound?
Brain angio: An MRA of the brain is very robust. With MR you can have a 3-dimensional picture of the vascular anatomy. MR does not have any radiation, the contrast less commonly has adverse reaction and is noninvasive. The only compelling reason not to do MR is if you have other contraindications or need actual intervention (ex. embolization) ...Read more
What are the primary differences in a CT scan of heart and a nuclear stress test? Would one make more sense looking for blockages?
CARDIAC IMAGING: A CT reveals anatomy with some limitation if heavy calcium is present & scanner technology dependent,A nuclear stress depends on the isotope (TCc vs Thallium vs one of the PET agents) reveals detailed information on function,often the 2 modalities are complementary and necessary for appropriate diagnosis and treatment/prognostication ...Read more
Clopidogrel for a TIA Consultant found an ordinary diseased Vein in neckand NOT Carotid Artery from the Tests.take Fibrazate any ideas of treatment?
Not usually reported: In 35 years of medical practice, I don't think I've ever heard of incidentally finding a diseased VEIN in the neck when an ultrasound/CT/MR angiogram for carotid artery diagnosis. The most important thing to prevent if you have vein disease is a clot; you are already taking clopidogrel for this purpose. Vascular disease risk lowering (lipids, BP, non-smoking, weight, blood sugar) targets arteries. ...Read more
Unclear: I'm not clear what you're asking? If carotid stenosis is suspected, the neck is auscultated for bruits. The pt is queried for neurologic deficit and, if appropriate, a neurologic exam is done. Duplex ultrasound exam of the neck is done. If necessary, a ct, mra, or angiogram may be necessary in selected cases. ...Read more
What are the typical causes of artery blockage requiring a stent with a patient has low cholesterol?
Blockages: Even people with low cholesterol can form blockages, so that may be a cause. Also elevated triglycerides can cause blockages and are different from cholesterol. Smoking can cause blockages. There are also some types of vasculitis that can cause blockages due to inflammation. ...Read moreSee 1 more doctor answer
What's more accurate test for a LV injection fraction? A specialized echo with 3d or an MRA of the heart with contrast?
MRA: I would give the advantage to MRA with contrast.. The picture resolution is very high and the image does not depend on patient's body habitus!! ...Read more
Will a CT angiogram of the coronary arteries reveal a pulmonary embolism or other lung disease and is it harmful to have 2 CT scans in the same month?
It might: A CT angiogram or the coronaries might show a pulmonary embolism, provided that the radiologists obtained full field of view reconstructions (some do not) and the pulmonary embolism is not higher or lower than the field of view. most often, the answer would be yes, a significant PE would be identified on this type of scan. having two ct's in the same month is not optimal, but likely of no harm. ...Read more
Ultrasound venous or arterial are the only ultrasounds for diagnosis of soft plaque blockage/blood clot/aneurysm. which is best?
Which test is more accurate a cardiac petscan or thallium stress test? Why is one or the other chosen by cardiologists?
PET over thallium: Both tests use nuclear isotopes. The isotope used in pet scans has better visualization/resolution characteristics than thallium which is a spect study (like technetium). Tissue viability is also superior in pet as compared to thallium. The problem is usually that pet is done in fewer cardiology systems than spect (technetium or thallium) of the spect scans, technetium is superior to thallium. ...Read moreSee 1 more doctor answer
MRI brain find: presence of a persistent trigeminal artery and hypoplasia of the basilar artery? What is this I read its very rare & cause aneurysm?
Dodged a bullet: Persistent Trigeminal art. is associated with aneurysm in 14%, likely on a congenital basis. If one does not exist, it is unlikely to develop. http://thejns.org/doi/abs/10.3171/jns.1971.35.5.0601 Association does not prove causality, but we don't understand the embryology well enough to know the causes of aneurysms. ...Read more
Would a Contrast-enhanced CT pulmonary angiogram also show lesions, abnormalities, masses, nodes, etc. of the lung or does it only show the blood vessels? (Basically, does it provide more or less information than regular Chest CT?)
Is image quality of magnetic resonance venography for the leg equivalent to CT venography? Is there a reason a dr. should opt for one over the other?
No radiation: in the MRI. THe real question is comparison to the more standard, and no radiation, and much cheaper ultrasound. "Magnetic resonance venography can differentiate an acute occlusion from chronic thrombus, but because of its high cost and limited availability, it is not yet used for the routine diagnosis of lower extremity venous occlusion" http://www.ncbi.nlm.nih.gov/pubmed/12386751 shows WHEN. ...Read more