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Evidence of Bilateral Temporal Lobe Involvement in Primary Progressive Aphasia: A SPECT Study

Marie-Hélène Soriani-Lefèvre, MD1,2, Didier Hannequin, MD, PhD2, Serge Bakchine, MD, PhD3, Jean-François Ménard, PhD4, Alain Manrique, MD1, Anne Hitzel, MD1, Pierre-Olivier Kotzki, MD, PhD5, Vincent Boudousq, MD5 and Pierre Vera, MD, PhD1,6

1 Department of Nuclear Medicine, Rouen University Hospital, Henri Becquerel Center, Laboratoire Universitaire Quantification en Imagerie Fonctionnelle, Rouen, France
2 Department of Neurology, Rouen University Hospital, Rouen, France
3 Department of Neurology, Reims University Hospital, Reims, France
4 Department of Biostatistics, Rouen University Hospital, Rouen, France
5 Department of Nuclear Medicine, Nime University Hospital, Nime, France
6 Service Hospitalier Frédéric Joliot, Commissariat à l’Energie Atomique–Direction des Sciences du Vivant–Orsay, France



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  		FIGURE 1. Brain systematization. (A) Lateral side. (B) Medial side. Broca = Broca region; Calc = calcarine region; CinA = anterior cingulate region; EF = external frontal region; IF = internal frontal region; Insul = insular region; LobQ = lobulus quadrilatere; LT = lateral temporal region; MT = medial temporal region; Occ = occipital region; OF = orbitofrontal region; P = parietal lobe; PreC = precentral region; PreF = prefrontal region; SM = sensorimotor region; Tha = thalamus; TP = temporal pole; W = Wernicke region.

 


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  		FIGURE 2. Percentage of PI decrease in 29 patients vs. 12 control subjects. (A) Right hemisphere. (B) Left hemisphere.

 


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  		FIGURE 3. Comparison of PI in patients with lexicosemantic disorders and control subjects. (A) Right hemisphere, lateral and medial side. (B) Left hemisphere, lateral and medial side.

 


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  		FIGURE 4. Comparison of PI in patients with or without atrophy and control subjects. (A) Right hemisphere, atrophic and nonatrophic groups. (B) Left hemisphere, atrophic and nonatrophic groups.

 




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