Abstract
Study design
To determine the capability to predict the clinical manifestations and treatment outcomes of traumatic cervicothoracic cord injury patients based on MR images.
Objective
To determine the relationship between the differences in MR patterns and signal areas according to Maravilla and Cohen’s classification and the PA CS system compared with the Frankel classification, in patients that demonstrated neurologic improvement within 1 year.
Summary of Literature Review
MR is the first imaging modality that directly visualizes the extent of spinal cord derange-ment, and thus, it has the potential to provide an accurate diagnosis of an injury and to determine the prognosis.
Materials and Methods
MR images were evaluated within 3 days of trauma in 36 spinal cord injury patients. The clinical follow-up period was more than 1 year. Quantitative analysis of spinal cord lesions was performed according to the PA CS system.
Results
A ccording to Maravilla and Cohen’s classification, 36 cases were classified as follows: 8 cases of type I, 10 cases of type II, 9 cases of type III and 9 cases of type IV. There was 1 case of type I, 8 cases of type II, 5 cases of type III, and no cases of type IV, who demonstrated neurologic improvements of more than 1 grade in the Frankel classification. A n analysis of the signal areas according to the PA CS system demonstrated no cases of areas greater than 100 mm2, 5 cases of areas between 50 to 100 mm2, and 9 cases of areas less than 50 mm2 who demonstrated neurologic improvement.
REFERENCES
1). Blumenkopt B and Juneau PA. Magnetic resonance imaging of thoracolumbar fracture. J Spinal Disorder. 1:144–150. 1988.
2). Frankel HL, Hancock DO, Hyslop G, Melzak J, Michaelis LS, Ungar GH, Vernon JD and Walsh JJ. The value of postural reduction in the initial management of closed injuries of the spine with paralplegia and tetraplegia, Part I. Paraplegia. 7:179–192. 1969.
3). Melbourne B and Daniel W. Performance analysis of a multicarrier PACS system. Telcordia Technologies 331 Newman Springs Road. Red Bank, NJ 07701, USA.
4). Maravilla KR & Cohen WA. MRI Atlas of the spine. London: Martin Dunitz;p. 302–339. 1991.
5). Schaefer DM, Flanders AE, Northrup BE, Doan HT and Osterholm JL. Magnetic resonance imaging of acute spinal trauma: Correlation with severity of neurologic injury. Spine. 14:1090–1095. 1988.
6). Betz RR, Gelman AJ, DeFilipp GJ, et al. Magnetic reso - nance imaging(MRI) in the evaluation of spinal cord injured children and adolescents. Paraplegia. 25:92–99. 1987.
7). Chakeres DW, Flickenger F, Bresnahan JC, et al. MR imaging of acute spinal cord trauma. AJNR. 8:5–10. 1987.
8). Dee GJ, Bello JA, Hilal SK. High field, thin section unclear magnetic resonance imaging of the cervical spine. Cardiovasc Intervent Radiol. 8:283–291. 1986.
9). Gold berg AL, Rothfus WE, Deeb AL, et al. The impact of magnetic resonance on the diagnostic evaluation of acute cervicothoracic spinal trauma. Skeletal Radiol. 17:89–95. 1988.
10). Hackney DB, Asato R, Joseph PM, et al. Hemorrh age and edema in acute spinal cord compression: Demonstration by MR imaging. Radiology. 161:387–390. 1987.
11). Mirvis SE. MR provides clues to cervical spine trauma. Diagn Imaging, July. 1988.
12). Tarr RW, Drolshagen LF, Kerner TC, et al. MR imaging of recent spinal trauma. Comp Assist Tomogr. 11:412–417. 1987.
13). Quencer RM, Sheldon JJ, Post MJD, et al. MRI of the chronically injured cervical spinal cord. AJR. 147:125–132. 1986.
14). Vink R, Knoblach SM, Faden AI. 31P magnetic resonance spectroscopy of trumatic spinal cord injury. Magn Reson Med. 5:390–394. 1987.
15). Kulkarni MV, McArdle CB, Kopanicky D, Miner M, Cotler H, Lee KF and Harris JH. Acute spinal cord injury: MR imaging at 1.5 T. Radiology. 164:837–843. 1987.
16). Osterholm JL. The pathophysiological response to spinal cord injury. J Neurosurg. 40:5–33. 1974.
17). Gomori JN, Grossman RI, Goldberg HI, Zimmerman RA and Bilaniuk LT. intracranial hematomas: Imaging by high-field MRI. Radiology. 157:87–93. 1985.
18). Koyanagi I, Iwasaki Y, Isu T, Akino M and Abe H. Significance of spinal cord swelling in the prognosis of acute spinal cord injury. Paraplegia. 27:190–197. 1989.
Table 1.
Table 3.
Allen classification | Case |
---|---|
Distractive flexion | 9 |
Compressive flexion | 3 |
Distractive extension | 2 |
Vertical compression | 1 |
Total | 15 |
Table 4.
McAfee classificaton | Case |
---|---|
Unstable burst fractures | 05 |
Chance fractures | 03 |
Flexion distraction injuries | 02 |
Translational injuries | 01 |
Total | 11 |