Abstract
A positron emission mammography scanner is under development at our laboratory. The tomograph has a rectangular geometry consisting of four banks of detector modules. For each detector, the system can measure the depth of interaction information inside the crystal. The rectangular geometry leads to irregular radial and angular sampling and spatially variant sensitivity that are different from conventional positron emission tomography (PET) systems. We adapted the theoretical analysis that we had developed for conventional PET systems to the list-mode likelihood reconstruction for this tomograph. The local impulse response and covariance of the reconstruction can be easily computed using the fast Fourier transform. These theoretical results are also used with computer observer models to compute the signal-to-noise ratio for lesion detection. The analysis reveals the spatially variant resolution and noise properties of the list-mode likelihood reconstruction. The theoretical predictions are in good agreement with Monte Carlo results.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1343-1349 |
| Number of pages | 7 |
| Journal | IEEE Transactions on Nuclear Science |
| Volume | 48 |
| Issue number | 4 II |
| DOIs | |
| State | Published - Aug 2001 |
| Externally published | Yes |
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Keywords
- Image analysis
- MAP estimation
- Positron emission tomography (PET)
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Nuclear Energy and Engineering
Cite this
Image properties of list-mode likelihood reconstruction for a rectangular positron emission mammograph with DOI measurements. / Qi, Jinyi; Klein, Gregory J.; Huesman, Ronald H.
In: IEEE Transactions on Nuclear Science, Vol. 48, No. 4 II, 08.2001, p. 1343-1349.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Image properties of list-mode likelihood reconstruction for a rectangular positron emission mammograph with DOI measurements
AU - Qi, Jinyi
AU - Klein, Gregory J.
AU - Huesman, Ronald H.
PY - 2001/8
Y1 - 2001/8
N2 - A positron emission mammography scanner is under development at our laboratory. The tomograph has a rectangular geometry consisting of four banks of detector modules. For each detector, the system can measure the depth of interaction information inside the crystal. The rectangular geometry leads to irregular radial and angular sampling and spatially variant sensitivity that are different from conventional positron emission tomography (PET) systems. We adapted the theoretical analysis that we had developed for conventional PET systems to the list-mode likelihood reconstruction for this tomograph. The local impulse response and covariance of the reconstruction can be easily computed using the fast Fourier transform. These theoretical results are also used with computer observer models to compute the signal-to-noise ratio for lesion detection. The analysis reveals the spatially variant resolution and noise properties of the list-mode likelihood reconstruction. The theoretical predictions are in good agreement with Monte Carlo results.
AB - A positron emission mammography scanner is under development at our laboratory. The tomograph has a rectangular geometry consisting of four banks of detector modules. For each detector, the system can measure the depth of interaction information inside the crystal. The rectangular geometry leads to irregular radial and angular sampling and spatially variant sensitivity that are different from conventional positron emission tomography (PET) systems. We adapted the theoretical analysis that we had developed for conventional PET systems to the list-mode likelihood reconstruction for this tomograph. The local impulse response and covariance of the reconstruction can be easily computed using the fast Fourier transform. These theoretical results are also used with computer observer models to compute the signal-to-noise ratio for lesion detection. The analysis reveals the spatially variant resolution and noise properties of the list-mode likelihood reconstruction. The theoretical predictions are in good agreement with Monte Carlo results.
KW - Image analysis
KW - MAP estimation
KW - Positron emission tomography (PET)
UR - http://www.scopus.com/inward/record.url?scp=0035428482&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035428482&partnerID=8YFLogxK
U2 - 10.1109/23.958349
DO - 10.1109/23.958349
M3 - Article
VL - 48
SP - 1343
EP - 1349
JO - IEEE Transactions on Nuclear Science
JF - IEEE Transactions on Nuclear Science
SN - 0018-9499
IS - 4 II
ER -