TY  - GEN
N2  - Attenuation correction (AC) in PET/MR imaging significantly alters the displayed PET signal. Modern AC methods forgo the process of directly calculating attenuation through transmission scans by using MR data to assign a tissue class and corresponding attenuation value to each voxel. However, MR AC often fails in the vicinity of medical implants, which create artifacts in the MR signal. Artifacts cause misclassification of tissue in the AC map, leading to miscalculation of PET signal. These issues are anticipated to affect PET/MR images of colorectal cancer patients with hepatic arterial infusion pumps (HAIPs). However, PET/MR imaging of these patients is desired for simultaneous visualization of liver soft tissue contrast and PET tracer uptake. This research investigated the effect of HAIPs on PET signal using various AC methods.
DO  - 10.6083/h128nf502
DO  - DOI
AB  - Attenuation correction (AC) in PET/MR imaging significantly alters the displayed PET signal. Modern AC methods forgo the process of directly calculating attenuation through transmission scans by using MR data to assign a tissue class and corresponding attenuation value to each voxel. However, MR AC often fails in the vicinity of medical implants, which create artifacts in the MR signal. Artifacts cause misclassification of tissue in the AC map, leading to miscalculation of PET signal. These issues are anticipated to affect PET/MR images of colorectal cancer patients with hepatic arterial infusion pumps (HAIPs). However, PET/MR imaging of these patients is desired for simultaneous visualization of liver soft tissue contrast and PET tracer uptake. This research investigated the effect of HAIPs on PET signal using various AC methods.
AD  - Oregon Health and Science University
AD  - Oregon Health and Science University
AD  - Oregon Health and Science University
AD  - Oregon Health and Science University
T1  - Effect of hepatic arterial infusion pumps on PET/MR images
DA  - 2022
AU  - Wishart, Joseph
AU  - Winters, Celeste
AU  - Mench, Anna
AU  - Gillan, Derrick
L1  - https://digitalcollections.ohsu.edu/record/9596/files/Wishart-Joseph-OHSU-ResearchWeek-2022.pdf
PB  - Oregon Health and Science University
LA  - eng
PY  - 2022
ID  - 9596
L4  - https://digitalcollections.ohsu.edu/record/9596/files/Wishart-Joseph-OHSU-ResearchWeek-2022.pdf
KW  - Diagnostic Imaging
KW  - Image Processing, Computer-Assisted
KW  - Drug Therapy
KW  - Colorectal Neoplasms
KW  - Positron Emission Tomography Computed Tomography
KW  - Magnetic Resonance Imaging, Interventional
KW  - Phantoms, Imaging
KW  - hepatic arterial infusion pump
KW  - colorectal cancer
KW  - medical physics
KW  - chemotherapy
KW  - attenuation correction
KW  - liver metastasis
TI  - Effect of hepatic arterial infusion pumps on PET/MR images
Y1  - 2022
L2  - https://digitalcollections.ohsu.edu/record/9596/files/Wishart-Joseph-OHSU-ResearchWeek-2022.pdf
LK  - https://digitalcollections.ohsu.edu/record/9596/files/Wishart-Joseph-OHSU-ResearchWeek-2022.pdf
UR  - https://digitalcollections.ohsu.edu/record/9596/files/Wishart-Joseph-OHSU-ResearchWeek-2022.pdf
ER  -