Performance characteristics of a dual head SPECT scanner with PET capability

Nellemann, P.; Hines, H.; Braymer, WK; Muehllehner, G.; Geagan, Michael

doi:10.1109/nssmic.1995.501924

Cited by 45 publications

(11 citation statements)

References 14 publications

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“…[30][31][32] Pai et al 33 have published post-treatment results of dual head PET scanning with FDG for detection of a local recurrence in head and neck cancer, showing a 100% sensitivity and specificity. However, their results are based on a limited group, consisting of 19 patients.…”

Section: The Value Of Laryngoscopy In Detection Of a Localmentioning

confidence: 99%

F‐18‐fluoro‐deoxy‐glucose positron‐emission tomography scanning in detection of local recurrence after radiotherapy for laryngeal/ pharyngeal cancer

et al. 2001

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Section: The Value Of Laryngoscopy In Detection Of a Localmentioning

confidence: 99%

F‐18‐fluoro‐deoxy‐glucose positron‐emission tomography scanning in detection of local recurrence after radiotherapy for laryngeal/ pharyngeal cancer

et al. 2001

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“…This dual-head camera has 5/8-in NaI crystal thickness and a 20 15-in FOV [6]. Data can be acquired in photopeak-photopeak (p-p) mode, where the energy of both detected -rays falls into the photopeak window or photopeak-photopeak 0018-9499/01$10.00 © 2001 IEEE photopeak-Compton (p-C) mode, where, in addition to the previous condition, the energy of one -ray may fall into the Compton window.…”

Section: A Adac MCD Cameramentioning

confidence: 99%

NEMA NU 2-2000+ performance measurements on an ADAC MCD camera

Pointon

Boudoux

Cohen

et al. 2001

IEEE Trans. Nucl. Sci.

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The clinically oriented NEMA NU-2 2000+ performance standards have been performed on an ADAC molecular coincidence detection dual-head camera. At 1 cm radius, the transverse resolution full-width at half-maximum was measured to be 5.2 (10.0) mm and the axial was 5.0 (10.6) mm. At 10 cm radius, the transverse radial resolution was 4.7 (7.4) mm and the transverse tangential was 8.5 (20.9) mm. The axial resolution was 14.0 (41.1) mm. The peak true count rate was 4370 counts/s at a concentration of 4.3 kBq/ml. The peak noise equivalent count rate (NECR) was 1620 counts/s at 2.9 kBq/ml. The system scatter fraction was 48%. The maximum relative count rate error observed at the NECR peak was 42%. The sensitivity was 1010 counts/s/MBq in the center and 870 counts/s/MBq at an offset of 10 cm. The contrast for the hot spheres ranged from 18.5 (11.6)% to 11.6 (7.9)% for a contrast ratio of 8:1 (4:1). For the cold spheres, it ranged from 41% to 25% with an overall background variability of 7%. The residual error in scatter and attenuation correction was approximately 50%. All measurements were performed at the maximum allowed crystal-to-crystal distance of 810 mm.Index Terms-Dual-head coincidence imaging, NEMA, performance standards.

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“…Recently, PET scanners coupled with CT scanners, called PET-CT, have been developed, overcoming the problem (at a very high cost). However, still many of the existing scanners are not PET-CT, and there is not such a capability in most of the gamma-camera based systems [22] with coincidence detection (SPECTscanners adapted for coincidence detection), and in small high resolution tomographs for research purposes [19]. Methods trying to perform this task, without CT corrections, tend to retrieve solutions that generate an undesired cross talk between the activity and attenuation images, unless a considerable amount of information about attenuation values is assumed as in [20].…”

Section: The Need For Attenuation Correction: Attenuated Transforms mentioning

confidence: 99%

Activity and attenuation recovery from activity dataonly in emission computed tomography

Pierro¹,

Crepaldi²

2006

Mat. apl. comput.

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Abstract.We describe the continuous and discrete mathematical models for Emission Computed Tomography (ECT) and the need for attenuation correction. Then we analyse the problem of retrieving the attenuation directly from the emission data, nonuniqueness and its consequences.We present the existing and new approaches for solving the problem. Methods are compared and illustrated by numerical simulations. The presentation focuses on Positron Emission Tomography, but we also discuss the extensions to Single Photon Emission Computed Tomography.Mathematical subject classification: 44A12, 65R30, 65R32.

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Performance characteristics of a dual head SPECT scanner with PET capability

Cited by 45 publications

References 14 publications

F‐18‐fluoro‐deoxy‐glucose positron‐emission tomography scanning in detection of local recurrence after radiotherapy for laryngeal/ pharyngeal cancer

F‐18‐fluoro‐deoxy‐glucose positron‐emission tomography scanning in detection of local recurrence after radiotherapy for laryngeal/ pharyngeal cancer

NEMA NU 2-2000+ performance measurements on an ADAC MCD camera

Activity and attenuation recovery from activity dataonly in emission computed tomography

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