The 3' -OH of the sugar group forms a bond with one of the negatively charged oxygens of the phosphate group attached to the 5' carbon of another sugar. When many of these nucleotide subunits combine, the result is the large single-stranded polynucleotide or nucleic acid, DNA ().
The length of the exam depends on the type of study being performed. 1  MRI of the Brain â¦ 20-45 minute scan time. 2  MRI of the Orbits â¦ 20-35 minute scan time.3  MRI of the TMJ â¦ 45-60 minute scan time.4  MRI of the Soft Tissue Neck â¦ 25-35 minute scan time.5  MRI of the Cervical Spine â¦ 20-35 minute scan time. MRI of the Brain â¦ 20-45 minute scan time. 2  MRI of the Orbits â¦ 20-35 minute scan time. 3  MRI of the TMJ â¦ 45-60 minute scan time. 4  MRI of the Soft Tissue Neck â¦ 25-35 minute scan time.
Each procedure will take between 30-45 minutes. Scanning times will vary, depending on the scanning protocol and machine at each facility. For a more accurate time frame, you should call the facility where you are scheduled and ask how long those exams take.A brain MRI shows brain tissue, ventricles, sinuses etc.t's also real loud, so if you can, bring those little foam ear plugs with you and put them in before hand. Hope it helps! http://wiki.answers.com/Q/How_long_does_an_mri_take. A complete scan, depending on the organs studied, sequences performed, and need for contrast enhancement may take up to one hour or more.