Clinical Experience with the Intraparenchymal Intracranial Pressure Monitoring Codman MicroSensor System

Neurosurgery ◽  
2005 ◽  
Vol 56 (4) ◽  
pp. 693-698 ◽  
Author(s):  
Lars-Owe D. Koskinen ◽  
Magnus Olivecrona
Keyword(s):  
Magnetic Resonance Imaging ◽  
Intracranial Pressure ◽  
Zero Drift ◽  
Resonance Imaging ◽  
Pressure Monitoring ◽  
General Data ◽  
A Minor ◽  
A Prospective Study ◽  
Codman Microsensor ◽  
Over Time

Abstract OBJECTIVE: Our main objective was to study the reliability of the Codman MicroSensor (CMS), used for intracranial pressure (ICP) measurements, as it is used in a clinical setting. In particular, the drift from zero was studied. METHODS: The investigation is a prospective study of 128 patients with a need for neurointensive care who have been treated for various diseases. The patients received an intraparenchymal CMS device, and the zero drift was measured at explantation of the sensor. In another 22 patients, the ICP was recorded simultaneously from a ventriculostomy and a CMS, and the values were compared. The general data of complications and pitfalls are collected from close to 1000 CMS devices implanted. RESULTS: The CMS was used, on average, 7.2 ± 0.4 days per patient. The total time of ICP measurement was 20,040 hours, resulting in at least 7.2 × 107 measuring values displayed. The drift from zero was 0.9 ± 0.2 mm Hg, and no correlation with duration of use was found (P = 0.9, r = 0.002). There was a good correlation between ICP measured by CMS and by ventriculostomy (P < 0.0001, r = 0.79). The average ICP measured with the ventriculostomy was 18.3 ± 0.3 mm Hg, and with the CMS, it was 19.0 ± 0.2 mm Hg. A few minor hematomas were identified, and no infections directly connected to the device were observed. Some pitfalls in handling and problems during magnetic resonance imaging investigations are discussed. CONCLUSION: In our hands, the CMS device is reliable and easy to use. The ICP recordings are stable over time, and there is only a minor zero drift. The device is today our standard method for ICP measurements.

Potential heating caused by intraparenchymal intracranial pressure transducers in a 3-tesla magnetic resonance imaging system using a body radiofrequency resonator: assessment of the Codman MicroSensor Transducer

2008 ◽  
Vol 109 (1) ◽  
pp. 159-164 ◽  
Author(s):  
Virginia F. J. Newcombe ◽  
Robert C. Hawkes ◽  
Sally G. Harding ◽  
Roslyn Willcox ◽  
Sarah Brock ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Intracranial Pressure ◽  
Mr Imaging ◽  
Imaging System ◽  
Resonance Imaging ◽  
Mr Conditional ◽  
Body Coil ◽  
Codman Microsensor ◽  
Head Coil

Magnetic resonance imaging and spectroscopy may provide important clinical information in the acute stages of brain injury. For this to occur it must be ensured that intracranial pressure (ICP) monitoring devices are safe to bring into the MR imaging suite. The authors tested a Codman MicroSensor ICP Transducer (Codman & Shurtleff, Inc.) within a 3-T MR imaging system using the transmit body coil and receive-only coils and the transmit-and-receive head coil. Extreme and rapid heating of 64°C was noted with the transducer wire in certain positions when using the transmit body coil and receive-only head coil. This is consistent with the phenomenon of resonance, and the probe was shown to have a distinct resonant response when coupled to HP 4195A Network Analyzer (Hewlett Packard). Coiling some of the transducer wire outside of the receive-only head coil reduced the generated current and so stopped the thermogenesis. This may be due to the introduction of a radiofrequency choke. The ICP transducer performed within clinically acceptable limits in both the static magnetic field and during imaging with high radiofrequency power when the excess wire was in this configuration. No heating was observed when a transmit-and-receive head coil was used. This study has shown when using a high-field magnet, the Codman ICP probe is MR conditional. That is, in the authors' system, it can be safely used with the transmit-and-receive head coil, but when using the transmit body coil the transducer wire must be coiled into concentric loops outside of the receive-only head coil.

Fiberoptic Intracranial Pressure Monitoring during Magnetic Resonance Imaging 

1997 ◽  
Vol 87 (4) ◽  
pp. 1001-1003 ◽  
Author(s):  
Robert E. Grady ◽  
C. Thomas Wass ◽  
Timothy P. Maus ◽  
Joel P. Felmlee
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Intracranial Pressure ◽  
Intracranial Pressure Monitoring ◽  
Resonance Imaging ◽  
Pressure Monitoring

scholarly journals Magnetic Resonance Imaging of the Codman Microsensor Transducer Used for Intraspinal Pressure Monitoring

Spine ◽  
2016 ◽  
Vol 41 (10) ◽  
pp. E605-E610 ◽  
Author(s):  
Isaac Phang ◽  
Marius Mada ◽  
Angelos G. Kolias ◽  
Virginia F. J. Newcombe ◽  
Rikin A. Trivedi ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Pressure Monitoring ◽  
Codman Microsensor

scholarly journals Lhermitte–Duclos Disease: Incidental Finding in Traumatic Cerebral Hemorrhage

2021 ◽  
Author(s):  
Hemant Kumar Beniwal ◽  
Thatikonda Satish ◽  
Gollapudi Prakash Rao ◽  
Musali Siddartha Reddy ◽  
Srikrishnaaditya Manne
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Intracranial Pressure ◽  
Cerebellar Ataxia ◽  
Cerebral Hemorrhage ◽  
Incidental Finding ◽  
Cowden Syndrome ◽  
Young Female ◽  
Resonance Imaging ◽  
Increased Intracranial Pressure

AbstractLhermitte–Duclos disease, also known as dysplastic cerebellar gangliocytoma, is a rare hamartomatous tumor localized in cerebellum. An association with Cowden syndrome is observed in 50% of cases who present with symptoms of increased intracranial pressure and cerebellar ataxia. These patients have specific magnetic resonance imaging and histopathological findings. Surgical resection is the treatment of choice. Here, we report a case of a young female with traumatic frontal hemorrhage associated with Lhermitte–Duclos disease.

scholarly journals Migraine or idiopathic intracranial hypertension: Magnetic resonance venography and magnetic resonance imaging findings

2020 ◽  
Vol 33 (3) ◽  
pp. 244-251
Author(s):  
Aynur Guliyeva ◽  
Melda Apaydin ◽  
Yesim Beckmann ◽  
Gulten Sezgin ◽  
Fazil Gelal
Keyword(s):  
Magnetic Resonance Imaging ◽  
Optic Nerve ◽  
Magnetic Resonance ◽  
Intracranial Pressure ◽  
Pituitary Gland ◽  
Optic Nerve Sheath ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Chi Square ◽  
Nerve Sheath

Background Idiopathic intracranial hypertension (IIH) is a disease characterised by increased cerebral pressure without a mass or hydrocephalus. We aimed to differentiate migraine and IIH patients based on imaging findings. Results Patients with IIH ( n = 32), migraine patients ( n = 34) and control subjects ( n = 33) were evaluated. Routine magnetic resonance imaging, contrast-enhanced 3D magnetic resonance venography and/or T1-weighted 3D gradient-recalled echo were taken with a 1.5 T magnetic resonance scanner. Optic-nerve sheath distention, flattened posterior globe and the height of the pituitary gland were evaluated in the three groups. Transverse sinuses (TS) were evaluated with respect to score of attenuation/stenosis and distribution. Pearson chi-square, Fisher’s exact test and chi-square trend statistical analyses were used for comparisons between the groups. A p-value of <0.05 was considered statistically significant. Decreased pituitary gland height, optic-nerve sheath distention and flattened posterior globe were found to be statistically significant ( p < 0.001) in IIH patients. Bilateral TS stenosis was also more common in IIH patients than in the control group and migraine group ( p = 0.02). Conclusion Decreased pituitary gland height, optic-nerve sheath distention, flattened posterior globe, bilateral stenosis and discontinuity in TS are significant findings in differentiating IIH cases from healthy individuals and migraine patients. Bilateral TS stenosis may be the cause rather than the result of increased intracranial pressure. The increase in intracranial pressure, which is considered to be responsible for the pathophysiology of IIH, is not involved in the pathophysiology of migraine.

Magnetic Resonance Imaging Evaluation of Neonates With Retinal Hemorrhages

PEDIATRICS ◽  
1992 ◽  
Vol 89 (2) ◽  
pp. 332-333
Author(s):  
WILBUR L. SMITH ◽  
RANDELL C. ALEXANDER ◽  
G. FRANK JUDISCH ◽  
YUTAKA SATO ◽  
SIMON C. S. KAO
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Abusive Head Trauma ◽  
Full Term ◽  
Resonance Imaging ◽  
Retinal Hemorrhages ◽  
Imaging Evaluation ◽  
Term Neonates ◽  
Magnetic Resonance Imaging Evaluation ◽  
A Prospective Study

Retinal hemorrhages occur frequently in association with abusive head trauma.1 The injuries are venous [See table in the PDF] in origin and, as such, are similar to the retinal hemorrhages which frequently occur in full-term neonates after vaginal delivery. Because retinal hemorrhages in child abuse frequently are associated with intracranial bleeding, we questioned the possibility of a relationship between parturitional retinal hemorrhages and concurrent intracranial injuries. To answer this question we designed a prospective study in which we performed magnetic resonance imaging on 10 randomly selected full-term neonates in whom the presence of retinal hemorrhages was confirmed on fundascopic examination by a pediatric ophthalmologist.

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