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.
These vascular loops are suspected of causing hearing loss, tinnitus, and vertigo, and surgery has been advocated to separate the vascular loop from the eighth cranial nerve.Previous reports have described pathologic anatomy, surgical approaches, and results of treatment.he wide range of audiometric and vestibular system test results probably reflects the complex interaction between the vascular loop and eighth cranial nerve, in which the loop exerts pressure on the nerve, and the nerve compromises inner ear circulation.