Clinical Trial: Diagnostic of Lewy Body Dementia by Combining Scintigraphy (SPECT) Using a Specific Transporter and Magnetic Resonance Imaging (MRI)

Study Status: Completed
Recruit Status: Completed
Study Type: Interventional

Official Title: Interest of the Combination of the DaTSCAN Scintigraphy and MRI Scan in the Differential Diagnosis of Lewy Body Dementia From Alzheimer Disease in Patients With Hallucinat

Brief Summary: The aim of this study is to improve the diagnostic of Lewy body dementia by combining the scintigraphy (SPECT) usig a spécific transporter and magnetic resonance imaging (MRI).

Detailed Summary:

Lewy body dementia is the second leading cause of dementia in France after degenerative Alzheimer's disease.

However its dignosis is difficult. Its comes in large part from the similarity of symptoms with another close dementia syndrome : the Alzheimer disease . Therfore, its is very important to have a mean to distinguish between the two dementias.

One highlight of the Lewy body dementia process being dopaminergic degeneration, the use of specific radioactive tracers is thought to be the way. The radiotracer that has the greatest advantage for these explorations is currently the DaTSCAN because it binds specifically on the dopamine transporter and can be used in Single photon emission computed tomography (SPECT).

The aim of this study is to improve the performance of imaging in the diagnosis of dementia by combining scintigraphy (SPECT) and magnetic resonance imaging (MRI) in the exploration of the striatal region . The development of this method applied to a population of subjects, with hallucinations and cognitive disorders, should demonstrate the value and complementarity of metabolic images (SPECT) and morphological (MRI) within the differential diagnosis of Lewy body dementia and the Alzheimer disease .

From a methodological point of view, the patient will be included in hospital and will have a clinical diagnosis defined according to the criteria of dementia NINCDS-ADRDA for the Alzheimer disease and Mc-Keith criteria for Lewy body dementia. Their MMSE will be over 18 and they have in common recurrent visual hallucinations.

After the inclusion, two steps must be distinguished, a neuropsychological evaluation stage and an scitigraphy exploration . Before the SPECT , all
Sponsor: University Hospital, Limoges

Current Primary Outcome: SPECT and MRI differential imaging [ Time Frame: Visit 1 ]

Original Primary Outcome: Same as current

Current Secondary Outcome: Neuropsychological analysis [ Time Frame: Visit 1 ]

Original Secondary Outcome: Same as current

Information By: University Hospital, Limoges

Dates:
Date Received: December 27, 2008
Date Started: March 2006
Date Completion:
Last Updated: August 26, 2009
Last Verified: August 2009