Abstract
Shunt malfunction is common and its diagnosis may require invasive testing that may be inaccurate or result in complications. Magnetic resonance imaging (MRI) may prove to be a useful noninvasive test of shunt function as it has been shown that MRI is capable of measuring cerebrospinal fluid (CSF) flows from 2 ml/h to 40 ml/h in model systems. Since flows in functioning shunt systems can be less than 2 ml/h, MRI must be sensitive enough to detect flow in this range in order to be a valid test for shunt function. Continuing previous studies, we have studied MRI flow-related enhancement at flow rates from 0 to 2 ml/h. Multiple spin echo scans (TR2000, TE20) were made through a specialized section of tubing in a model shunt system. The intensity of the MRI signal at points known to demonstrate maximal flow-related enhancement was measured. A linear relationship was demonstrated between signal intensity and flow as low as 0.8 ml/h. These results add support to the concept that MRI is sensitive enough to detect the lowest flows present in functioning shunt systems and therefore may be useful as a noninvasive test of shunt function.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 73-75 |
| Number of pages | 3 |
| Journal | Child's Nervous System |
| Volume | 8 |
| Issue number | 2 |
| DOIs | |
| State | Published - Mar 1992 |
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Keywords
- Cerebrospinal fluid
- Cerebrospinal fluid shunt
- Magnetic resonance imaging
- Shunt malfunction
ASJC Scopus subject areas
- Pediatrics, Perinatology, and Child Health
- Clinical Neurology
Cite this
Magnetic resonance imaging analysis of extremely slow flow in a model shunt system. / Frank, Edmund; Buonocore, Michael; Hein, Larry.
In: Child's Nervous System, Vol. 8, No. 2, 03.1992, p. 73-75.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Magnetic resonance imaging analysis of extremely slow flow in a model shunt system
AU - Frank, Edmund
AU - Buonocore, Michael
AU - Hein, Larry
PY - 1992/3
Y1 - 1992/3
N2 - Shunt malfunction is common and its diagnosis may require invasive testing that may be inaccurate or result in complications. Magnetic resonance imaging (MRI) may prove to be a useful noninvasive test of shunt function as it has been shown that MRI is capable of measuring cerebrospinal fluid (CSF) flows from 2 ml/h to 40 ml/h in model systems. Since flows in functioning shunt systems can be less than 2 ml/h, MRI must be sensitive enough to detect flow in this range in order to be a valid test for shunt function. Continuing previous studies, we have studied MRI flow-related enhancement at flow rates from 0 to 2 ml/h. Multiple spin echo scans (TR2000, TE20) were made through a specialized section of tubing in a model shunt system. The intensity of the MRI signal at points known to demonstrate maximal flow-related enhancement was measured. A linear relationship was demonstrated between signal intensity and flow as low as 0.8 ml/h. These results add support to the concept that MRI is sensitive enough to detect the lowest flows present in functioning shunt systems and therefore may be useful as a noninvasive test of shunt function.
AB - Shunt malfunction is common and its diagnosis may require invasive testing that may be inaccurate or result in complications. Magnetic resonance imaging (MRI) may prove to be a useful noninvasive test of shunt function as it has been shown that MRI is capable of measuring cerebrospinal fluid (CSF) flows from 2 ml/h to 40 ml/h in model systems. Since flows in functioning shunt systems can be less than 2 ml/h, MRI must be sensitive enough to detect flow in this range in order to be a valid test for shunt function. Continuing previous studies, we have studied MRI flow-related enhancement at flow rates from 0 to 2 ml/h. Multiple spin echo scans (TR2000, TE20) were made through a specialized section of tubing in a model shunt system. The intensity of the MRI signal at points known to demonstrate maximal flow-related enhancement was measured. A linear relationship was demonstrated between signal intensity and flow as low as 0.8 ml/h. These results add support to the concept that MRI is sensitive enough to detect the lowest flows present in functioning shunt systems and therefore may be useful as a noninvasive test of shunt function.
KW - Cerebrospinal fluid
KW - Cerebrospinal fluid shunt
KW - Magnetic resonance imaging
KW - Shunt malfunction
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UR - http://www.scopus.com/inward/citedby.url?scp=0026513403&partnerID=8YFLogxK
U2 - 10.1007/BF00298443
DO - 10.1007/BF00298443
M3 - Article
C2 - 1591749
AN - SCOPUS:0026513403
VL - 8
SP - 73
EP - 75
JO - Child's Nervous System
JF - Child's Nervous System
SN - 0256-7040
IS - 2
ER -