Radiopaedia Helpers

"Spatial resolution is the ability of a gamma camera to differentiate two close radioactive sources. It takes "full width at half maximum" (FWHM) of the radioactivity count rate from a point source or a line source. FWHM in this case is defined as possible positions of the source when the count rate is half of its maximum. Therefore, the smaller the FWHM, the higher the spatial resolution ¹."

Line 1:160 · 'FWHM' has no definition. Spell it out if it's unfamiliar to the audience.

"Spatial resolution is the ability of a gamma camera to differentiate two close radioactive sources. It takes "full width at half maximum" (FWHM) of the radioactivity count rate from a point source or a line source. FWHM in this case is defined as possible positions of the source when the count rate is half of its maximum. Therefore, the smaller the FWHM, the higher the spatial resolution ¹."

Line 1:236 · 'FWHM' has no definition. Spell it out if it's unfamiliar to the audience.

"Spatial resolution is the ability of a gamma camera to differentiate two close radioactive sources. It takes "full width at half maximum" (FWHM) of the radioactivity count rate from a point source or a line source. FWHM in this case is defined as possible positions of the source when the count rate is half of its maximum. Therefore, the smaller the FWHM, the higher the spatial resolution ¹."

Line 1:372 · 'FWHM' has no definition. Spell it out if it's unfamiliar to the audience.

"The higher the gamma photon energy, the higher the number of scintillation photons reaching a photomultiplier tube (PM tube). Thus, there are fewer variations of the position of the source ¹."

Line 10:120 · 'PM' has no definition. Spell it out if it's unfamiliar to the audience.

"A good connection between the scintillation crystal and the photomultiplier tube allows maximum light collection. Hexagonal or square-shaped PM tubes cover a greater area of the crystal instead of circular ones because there is less wasted space between the PM tubes ¹."

Line 12:145 · 'PM' has no definition. Spell it out if it's unfamiliar to the audience.

"A good connection between the scintillation crystal and the photomultiplier tube allows maximum light collection. Hexagonal or square-shaped PM tubes cover a greater area of the crystal instead of circular ones because there is less wasted space between the PM tubes ¹."

Line 12:262 · 'PM' has no definition. Spell it out if it's unfamiliar to the audience.

"A larger number of PM tubes allows better sampling of light, as long as the minimum number of scintillation photons collected per tube is achieved."

Line 13:23 · 'PM' has no definition. Spell it out if it's unfamiliar to the audience.

"More efficient PM tube releases more photoelectrons per photon detected, thus improving spatial resolution."

Line 14:19 · 'PM' has no definition. Spell it out if it's unfamiliar to the audience.

"The intrinsic resolution of gamma camera is 2.5 to 4 mm of FWHM ¹."

Line 17:63 · 'FWHM' has no definition. Spell it out if it's unfamiliar to the audience.

Lint: spatial-resolution-gamma-camera