What is Inphase and Outphase?
phrase. If two things are out of phase with each other, they are not working or happening together as they should. If two things are in phase, they are working or occurring together as they should.
What is T2 * in MRI?
T2 images are a map of proton energy within fatty AND water-based tissues of the body. Fatty tissue is distinguished from water-based tissue by comparing with the T1 images – anything that is bright on the T2 images but dark on the T1 images is fluid-based tissue.
What is T2 * used for?
T2*-weighted sequences are used to depict paramagnetic deoxyhemoglobin, methemoglobin, or hemosiderin in lesions and tissues.
What do you mean by Inphase?
adjective Electricity. having the same phase.
What is T2 * vs T2?
T2* can be considered an “observed” or “effective” T2, whereas the first T2 can be considered the “natural” or “true” T2 of the tissue being imaged. T2* is always less than or equal to T2. T2* results principally from inhomogeneities in the main magnetic field.
What is T1W and T2W?
The standard MR sequences obtained are: noncontrast T1-weighted (T1W) in-phase, out-of-phase and fat-suppressed images, and T2-weighted (T2W) fat- and non-fat-suppressed images.
What is a Dixon MRI sequence?
The Dixon method is an MRI sequence based on chemical shift and designed to achieve uniform fat suppression. It has been gaining popularity as it has some advantages over other fat suppression techniques, namely: suppression of fat signal is more uniform and less affected by artifacts than many other techniques.
What does 90 degrees out of phase mean?
“90 degrees out of phase” means when one wave is at zero, the other will be at its peak (see Figure 1.4.) In other words, when the green wave is at 0° phase, the blue wave is at 90°. In other words, when the green wave is at 0° phase, the blue wave is at 180°.
Where can I find information on adnexal masses?
For information about the SORT evidence rating system, go to https://www.aafp.org/afpsort. The differential diagnosis for adnexal masses is broad.
Can a pelvic exam detect an adnexal mass?
Pelvic examination has low sensitivity for detecting an adnexal mass; negative pelvic examination findings in a symptomatic woman should not deter further workup. Ectopic pregnancy must be ruled out in women of reproductive age. A cancer antigen 125 (CA 125) test may assist in the evaluation of an adnexal mass in appropriate patients.
When to use serum CA 125 for adnexal masses?
Serum CA 125 levels should not be routinely used during the diagnostic workup of an adnexal mass in a premenopausal patient. Serum CA 125 levels should be drawn in postmenopausal patients with adnexal masses to guide treatment options.
When do adnexal masses occur in a pregnant woman?
An ectopic pregnancy is when an embryo implants somewhere other than in the uterine cavity—most frequently in the fallopian tube. In cases of pregnant individuals for whom ectopic pregnancy has been ruled out, adnexal masses are usually benign and occur as a result of hormonal changes identified during pregnancy.