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The goal of this study is to explore the effect of subthalamic nucleus (STN)-DBS surgery and stimulation in PD (Parkinson's disease) patients on regional cerebral blood (CBF) flow during cognitive task performance or at rest.
In this study subjects undergo SPECT scans for CBF mapping. PD patients before the surgery and healthy controls undergo two scans. PD patients after the surgery undergo four scans. PD patients who undergo two scans before the surgery, undergo only two scans after the surgery.
Uptake of Tc-ECD, a CBF radiotracer, is done in the following conditions:
Following the Tc-ECD injection, the subjects are scanned by Irix SPECT camera for 15min.
Scans are analyzed and the regional CBF is measured using imaging software. Statistical analysis is done to discover the effect of the surgery, stimulation and the disease on blood flow at rest and during task performance. In addition, differences between groups in number of words produced during the task are also statistically analyzed.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| PD, DBS, healthy controls | Other | Patients with idiopathic PD before or after DBS surgery (during on or off-stimulation) and healthy controls. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Injection of 15mCi of Tc-ECD and scanning by SPECT camera | Radiation | All subjects (PD patients with or without DBS and healthy controls) will be injected with 15mCi of Tc-ECD and afterwards will be scanned by an Irix SPECT camera. |
| Measure | Description | Time Frame |
|---|---|---|
| CBF values in different brain regions | 3 months to 2 years post-surgery |
| Measure | Description | Time Frame |
|---|---|---|
| Number of words produced in the semantic fluency task | 3 months to 2 years post-surgery |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Sharon Hassin, MD | Contact | 97235305791 | sharon.hassin@sheba.health.gov.il | |
| Yafit Kuttner, B.Sc | Contact | 97235304753 | yafitkuttner@yahoo.com |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Movement Disorders Clinic, Sheba Medical Center | Recruiting | Ramat Gan | 52621 | Israel |
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| Semantic verbal fluency task performance | Behavioral | All Subjects (PD patients with or without DBS and healthy controls) before one of the two scans will perform the semantic verbal fluency task during the Tc-ECD uptake for 9 minutes. Before the other scan subjects will be at rest. |
|
| Turning off the stimulator | Device | For PD patients treated with DBS, the neurologist will turn off the stimulator after the injection of Tc-ECD for ten minutes and then turn it back on. |
|
| ID | Term |
|---|---|
| D010300 | Parkinson Disease |
| ID | Term |
|---|---|
| D020734 | Parkinsonian Disorders |
| D001480 | Basal Ganglia Diseases |
| D001927 | Brain Diseases |
| D002493 | Central Nervous System Diseases |
| D009422 | Nervous System Diseases |
| D009069 | Movement Disorders |
| D000080874 | Synucleinopathies |
| D019636 | Neurodegenerative Diseases |
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