CAMRT MRI Spine pathology Final Complete Questions and Answers

CAMRT MRI Spine pathology Final
Complete Questions and Answers

Arnold Chiari malformation - CORRECT ANSWER-3 types

Type 1: cerebellar tonsils displaced 5-6mm below foramen, mo hydrocephalus, 4th
ventricle doesnt move, syrinx is possible

Type 2: Cerebellar tonsils, vermis, cerebellum, medulla oblongata herniate down
through foramen, hydrocephalus, associated with myelomeningocele and agenesis of
CC

Type 3: Cerebellum meninges and sometimes brainstem into encephalocele, type 2
characteristics may be present

What are associated findings of arnold chiari malformation - CORRECT ANSWER-
hydrocephalus and syrinx

Syringomyelia / hydromyelia - CORRECT ANSWER-Fluid filled cavity in the spinal cord,
mostly congenital, acquired due to tumours, trauma, hemorrhage. 90% occur with
arnold chiari type 1

Sympyoms of syrinx - CORRECT ANSWER--Sensory loss
-Muscle atrophy
- T spine scoliosis

Appearance of syrinx on MRI - CORRECT ANSWER-Isointense to CSF on T1 and T2

Tethered cord - CORRECT ANSWER-Conus doesnt descend to its usual position at
L1/L2, congenital. T1 would show a thickened filum terminale

Disc herniation - CORRECT ANSWER-Nucleus pulposes protrudes through outer
fibrous ring (annulus fibrosis), can pinch nerves, may be due to trauma or strain. 90%
occur in L spine

Symptoms of disc herniation - CORRECT ANSWER--Pain radiating down legs
-Sensory + motor loss + muscle weakness

Vertebral osteomyelitis and appearance on MRI - CORRECT ANSWER-Can occur due
to disc infection, people most at risk: diabetics, steroid/ drug users (heroin)

T1- hypo