Table 2 P-values of Mann–Whitney U-test of PET/CT parameters comparing the three samples (all accessory spleens, IPAS and pNETs) in each reconstruction in the subcohort of exams acquired retrospectively (42 accessory spleens, 6 IPAS and 8 pNET), as well as P-values of Wilcoxon signed-ranks test of PET/CT parameters of all lesions (42 accessory spleens, 6 IPAS and 8 pNET) among different reconstructions in the subcohort of exams acquired retrospectively.

From: Impact of PET data driven respiratory motion correction and BSREM reconstruction of 68Ga-DOTATATE PET/CT for differentiating neuroendocrine tumors (NET) and intrapancreatic accessory spleens (IPAS)

 

PET/CT parameters

BSREM1000 vs. OSEM

BSREM1000 (DDG 10.0) vs. OSEM (DDG 10.0)

OSEM (DDG 10.0) vs. OSEM (1/2)

BSREM1000 (DDG 10.0) vs. BSREM1000 (1/2)

All lesion* (accessory spleen, IPAS and pNET)

SUVmax

0.010

0.126

0.001

0.001

SUVmean

0.297

0.482

0.001

0.001

PET volume

0.136

0.152

0.001

0.086

Reconstructions**

PET parameters

Intrapancreatic spleen vs all accessory spleen

Intrapancreatic spleen vs pNET

pNET vs all accessory spleen

 

OSEM

SUVmax

0.166

0.057

0.024

 

SUVmean

0.121

0.044

0.029

BSREM1000

SUVmax

0.117

0.034

0.014

SUVmean

0.114

0.044

0.018

OSEM DDG 10.0

SUVmax

0.559

0.033

0.002

SUVmean

0.473

0.024

0.003

BSREM1000 DDG 10.0

SUVmax

0.854

0.033

0.002

SUVmean

0.676

0.033

0.003

  1. All lesion*: p-value was calculated with Wilcoxon signed-ranks test.
  2. Reconstructions**: p-value was calculated with Mann–Whitney U-test.
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