Forensics: Ink Chromatography Lab 2015. Background: Chromatography is a method for analyzing mixtures by separating them into the. chemicals from which they are made. It can be used to separate mixtures like ink, blood, gasoline, and lipstick. In ink chromatography, you are separating the colored pigments that. make up the color of the pen.
Imaging diagnosis: Vascular loop syndrome with 7th - 8th CN Compression, Hemifacial spasm. Vascular loop syndrome Abnormal anatomical variation or course of vessel causing symptomatic compression over cranial nerves at IAC or Cp Angle cistern. Spasmodic hyperfunction of nerve due to compression.
Vascular loop syndrome. 1  A 50 y o male with typical left hemi facial spasm. 2  Routine MRI axial T2w sequences were absolutely normal except tortuous vertebro basilar with marked tortuousity of left sided vertebral. 3  Imaging diagnosis: Vascular loop syndrome with 7th - 8th CN Compression, Hemifacial spasm. Vascular loop syndrome. Abnormal anatomical variation or course of vessel causing symptomatic compression over cranial nerves at IAC or Cp Angle cistern. Spasmodic hyperfunction of nerve due to compression. Compression of 5th CN (Trigeminal nerve) present with trigeminal neuralgia and 7th CN (Facial nerve) present with hemi facial spasm.