Abstract
PET using FDG is a critical tool for evaluation of dementias, with characteristic patterns of hypometabolism suggesting specific diagnoses. Hypometabolism in the occipital region is recognized as an important finding associated with dementia with Lewy bodies and posterior cortical atrophy. We describe here the novel "occipital tunnel" sign, which results from relative sparing of FDG uptake in the medial occipital (primary visual) cortex compared with more severe loss in the surrounding lateral occipital (visual association) cortex. This sign is useful for recognizing the occipital findings of dementia with Lewy bodies and posterior cortical atrophy, especially when viewing sagittal projections.
| Original language | English (US) |
|---|---|
| Pages (from-to) | e59-e61 |
| Journal | Clinical Nuclear Medicine |
| Volume | 43 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 1 2018 |
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Keywords
- Alzheimer disease
- dementia
- dementia with Lewy bodies
- FDG PET
- neurodegenerative disease
- posterior cortical atrophy
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
Cite this
"Occipital Tunnel" Sign on FDG PET for Differentiating Dementias. / Sawyer, David M.; Kuo, Phillip H.
In: Clinical Nuclear Medicine, Vol. 43, No. 2, 01.02.2018, p. e59-e61.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - "Occipital Tunnel" Sign on FDG PET for Differentiating Dementias
AU - Sawyer, David M.
AU - Kuo, Phillip H.
PY - 2018/2/1
Y1 - 2018/2/1
N2 - PET using FDG is a critical tool for evaluation of dementias, with characteristic patterns of hypometabolism suggesting specific diagnoses. Hypometabolism in the occipital region is recognized as an important finding associated with dementia with Lewy bodies and posterior cortical atrophy. We describe here the novel "occipital tunnel" sign, which results from relative sparing of FDG uptake in the medial occipital (primary visual) cortex compared with more severe loss in the surrounding lateral occipital (visual association) cortex. This sign is useful for recognizing the occipital findings of dementia with Lewy bodies and posterior cortical atrophy, especially when viewing sagittal projections.
AB - PET using FDG is a critical tool for evaluation of dementias, with characteristic patterns of hypometabolism suggesting specific diagnoses. Hypometabolism in the occipital region is recognized as an important finding associated with dementia with Lewy bodies and posterior cortical atrophy. We describe here the novel "occipital tunnel" sign, which results from relative sparing of FDG uptake in the medial occipital (primary visual) cortex compared with more severe loss in the surrounding lateral occipital (visual association) cortex. This sign is useful for recognizing the occipital findings of dementia with Lewy bodies and posterior cortical atrophy, especially when viewing sagittal projections.
KW - Alzheimer disease
KW - dementia
KW - dementia with Lewy bodies
KW - FDG PET
KW - neurodegenerative disease
KW - posterior cortical atrophy
UR - http://www.scopus.com/inward/record.url?scp=85040792522&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85040792522&partnerID=8YFLogxK
U2 - 10.1097/RLU.0000000000001925
DO - 10.1097/RLU.0000000000001925
M3 - Article
C2 - 29232244
AN - SCOPUS:85040792522
VL - 43
SP - e59-e61
JO - Clinical Nuclear Medicine
JF - Clinical Nuclear Medicine
SN - 0363-9762
IS - 2
ER -