Roy Edwards and David Kuhn developed the first SPECT camera, the Mark IV, in which period?

Roy Edwards and David Kuhn developed the first SPECT camera, the Mark IV, in which period?

• A. 1958
• B. 1931
• C. 1923
• D. Early 1960s

Answer: (D)

SPECT imaging introduces tomography to functional gamma imaging, which means creating 3D pictures by rotating a gamma camera around the patient and reconstructing cross-sectional data. After the first practical gamma cameras appeared around 1958, work progressed toward true tomographic techniques. Roy Edwards and David Kuhn developed the first camera specifically for SPECT, the Mark IV, in the early 1960s, marking the start of practical single-photon emission computed tomography. The other dates are outside this timeline: 1923 and 1931 are well before gamma cameras existed, and 1958 is the era of the initial gamma camera rather than a dedicated SPECT instrument.

SPECT imaging introduces tomography to functional gamma imaging, which means creating 3D pictures by rotating a gamma camera around the patient and reconstructing cross-sectional data. After the first practical gamma cameras appeared around 1958, work progressed toward true tomographic techniques. Roy Edwards and David Kuhn developed the first camera specifically for SPECT, the Mark IV, in the early 1960s, marking the start of practical single-photon emission computed tomography. The other dates are outside this timeline: 1923 and 1931 are well before gamma cameras existed, and 1958 is the era of the initial gamma camera rather than a dedicated SPECT instrument.