Difference Between MRI SPIR and Spair:

There is a big difference between MRI SPIR and SPAIR.

1. Whether it is adiabatic or not

The SPIR is very insulated, while the SPAIR is almost non-diabatic.

2. Different uses

Magnetic resonance spir was discovered as a physical phenomenon in 1946. It is mainly used in the fields of physics, chemistry and biology, and its main function is to conduct qualitative and quantitative and spatial positioning research on substances. In 1973, Lauterbur et al. first reported the technique of imaging using the principle of magnetic resonance.

More recently, magnetic resonance imaging.

The technique has been widely used in daily clinical work as part of medical imaging, in order to avoid radioisotopes associated with nuclear medicine.

Imaging is confused, so this technique is called magnetic resonance imaging. Spair is the use of atomic nuclei.

It is a new diagnostic method that generates magnetic resonance signals by resonance in a magnetic field to create images, which is used to detect the density of hydrogen protons, the flow rate of hydrogen proton motion, the T1 relaxation time, the T2 relaxation time, and various scanning parameters that can produce the MRI signal and affect the intensity of the MRI signal.

3. Different ways to use

With the SPIR test, the patient's bladder needs to be moderately filled, both as an anatomical marker for surrounding organs and to squeeze the bowel loops out of the pelvis to some extent. and remove metal foreign objects from the body. In contrast, the body coil or pelvic phased coil or intrarectal coil should be used for SPAIR examination, and T1-weighted axial image and T2-weighted axis, crown, and sagittal three-dimensional image are routinely used.

Scanning sequence T, weighted image with conventional SE, TR600ms, TEL5 20ms; T2-weighted images are detected with a fast spin-echo sequence.

4. The cost of use is different

It costs about 500 yuan to do an MRI SPIR, while SPAIR is relatively cheap, only more than 100 yuan.

Encyclopedia - Magnetic Resonance.

The main differences between the two include:

1.SPIR is a non-adiabatic pulse and SPAIR is an adiabatic pulse.

2.In general, spir takes less time and spair takes less time.

3.SPIR is more sensitive to RF field B1, while SPAIR is less sensitive.

Magnetic resonance. Magnetic resonance refers to the phenomenon of spin magnetic resonance. It has a broad meaning and includes nuclear magnetic resonance (NMR), electron paramagnetic resonance (EPR), or electron spin resonance (ESR).

In addition, magnetic resonance is often referred to in people's daily life, which refers to magnetic resonance imaging (MRI), which is a type of imaging equipment used for medical examination made by using the phenomenon of nuclear magnetic resonance.