Basic performance and stability of a CdTe solid-state detector panel

Tsuchiya, Katsutoshi; Takahashi, Isao; Kawaguchi, Tsuneaki; Yokoi, Kazuma; Morimoto, Yuuichi; Ishitsu, Takafumi; Suzuki, Atsurou; Ueno, Y.; Kobashi, Keiji

doi:10.1007/s12149-010-0354-1

Cited by 25 publications

(22 citation statements)

References 10 publications

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“…The long-term stability of the energy resolution of the CdTe detectors was assured by periodically resetting the bias [8]. No significant variances in the spectral peak position and energy resolution of the CdTe detectors were observed for over a year [9]. The energy of detected gamma rays is recorded in list-mode data.…”

Section: Outline Of Cdte-pet and Its Parameter Settingsmentioning

confidence: 99%

“…The size of each detector pixel is 1.2 Â 1.4 Â 5 mm. The intrinsic energy resolution (FWHM) of the CdTe detector is 6.6 % at 140.5 keV, and the count-rate linearity is maintained at 200 kcps per head and under [9]. For high-sensitivity imaging, a wide aperture parallel-hole collimator (Fig.…”

Section: Outline Of Cdte-spectmentioning

confidence: 99%

“…The hole size of the 4-PMC is matched to four detector pixels, that is, there are four (2 Â 2) pixels per collimator hole. By contrast, the hole size of the standard parallel-hole collimator [9] is matched to one detector pixel, that is, a 1-pixel matched collimator (1-PMC). The specifications of both collimators are shown in Table 4.1.…”

Section: Outline Of Cdte-spectmentioning

confidence: 99%

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Semiconductor Detector-Based Scanners for Nuclear Medicine

Takeuchi

Suzuki

Ueno

et al. 2016

Perspectives on Nuclear Medicine for Molecular Diagnosis and Integrated Therapy

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Semiconductor detectors have the potential to improve the quantitative accuracy of nuclear medicine imaging with their better energy and intrinsic spatial resolutions than those of conventional scintillator-based detectors. The fine energy resolution leads to a better image contrast due to better scatter rejection. The fine intrinsic spatial resolution due to a pixelated structure leads to a better image contrast and lower partial volume effect. Their pixelated structures also improve the count-rate capability. The authors developed CdTe semiconductor detectorbased positron emission tomography (CdTe-PET) and single-photon emission computed tomography (CdTe-SPECT) in order to test the potential of using semiconductor detectors in nuclear medicine. The physical performances of both systems were measured in several phantom experiments. The capability of using CdTe-PET

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Section: Outline Of Cdte-pet and Its Parameter Settingsmentioning

confidence: 99%

Section: Outline Of Cdte-spectmentioning

confidence: 99%

Section: Outline Of Cdte-spectmentioning

confidence: 99%

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Semiconductor Detector-Based Scanners for Nuclear Medicine

Takeuchi

Suzuki

Ueno

et al. 2016

Perspectives on Nuclear Medicine for Molecular Diagnosis and Integrated Therapy

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“…Discovery NM 530c or 630 (GE healthcare) and D-SPECT (Spectrum Dynamics), equipped with cadmium-zinc-telluride (CZT) detecting elements, are commercially available [35][36][37][38] and a prototype gamma camera: R1-M (Hitachi, Ltd.), equipped with cadmium-telluride detecting elements, is currently being developed [39,40]. Compared with conventional NaI gamma cameras, the CZT gamma cameras have multiple advantages, such as improved spatial resolution, high energy resolution, and high sensitivity which reduces patients' discomfort and minimizes motion artifacts [37,40,41].…”

Section: Ctac For Myocardial Spect Using Solid-state Gamma Camerasmentioning

confidence: 99%

Cardiac SPECT/CT Imaging: CT Attenuation Correction and SPECT/CT Hybrid Imaging

Fukushima¹,

Kumita²

2016

Int J Radiol Med Imag

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Cardiac single photon emission computed tomography (SPECT)/computed tomography (CT) imaging is facilitated by the dissemination of SPECT/CT hybrid systems and dedicated image fusion software. The combined approach of SPECT and CT has various advantages when compared with stand-alone imaging. CT attenuation correction can correct attenuation artifacts in myocardial SPECT and improves diagnostic accuracy for patients with coronary artery disease (CAD). Cardiac SPECT/CT hybrid imaging allows detection of coronary artery stenoses and abnormalities in myocardial perfusion and fatty-acid metabolism in patients with cardiac disease. It has been reported that this modality improves diagnostic accuracy in the detection of CAD compared to the individual imaging techniques. Furthermore, this approach facilitates the detection of hemodynamically significant coronary artery stenoses and the management of revascularization procedures. These abilities of cardiac hybrid SPECT/CT imaging will be further refined validating a range of clinical applications in large-scale clinical trials. Int J Radiol Med ImagIJRMI, an open access journal

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“…imaging [2,3]. Flexibility in both sizing and fine arrangement of detectors has improved the spatial resolution and image quality.…”

Section: Semiconductor Detectors Have In Recent Times Emerged As a Nementioning

confidence: 99%

Evaluation of delineation of image details in semiconductor PET utilizing the normalized mutual information technique

Kubo

Hirata

Matsuzaki

et al. 2014

Nuclear Medicine Communications

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Delineation of image details in semiconductor PET Kubo et al. 2 Objective PET using semiconductor detectors provides high-quality images of the human brain because of its high spatial resolution. To quantitatively evaluate the delineation of image details in clinical PET images, we used normalized mutual information (NMI) to quantify the similarity with images obtained through MRI. NMI is used to evaluate image quality by determining similarity with a reference image. The aim of this study was to evaluate quantitatively the delineation of image details provided by semiconductor PET. Materials and methodsTo quantitatively evaluate anatomical delineation in clinical PET images, MRI scans of patients were used as T1-weighted images. ResultsNMIsemic ranged from 1.22 to 1.29, whereas NMIconve ranged from 1.13 to 1.18 (P<0.05). Furthermore, all the NMI values of the semiconductor PET were higher than those of the conventional scintillator PET. ConclusionUtilizing NMI, we quantitatively evaluated the delineation of image details in clinical PET images. The results reveal that semiconductor PET has superior anatomical delineation 3 and physical performance compared with conventional scintillator PET. This improved delineation of image details makes semiconductor PET promising for clinical applications.

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Basic performance and stability of a CdTe solid-state detector panel

Abstract: The basic performance of the CdTe-gamma camera system was evaluated, and its stability was verified. It was shown that the camera could be operated daily for several months without calibration.

Cited by 25 publications

References 10 publications

Semiconductor Detector-Based Scanners for Nuclear Medicine

Semiconductor Detector-Based Scanners for Nuclear Medicine

Cardiac SPECT/CT Imaging: CT Attenuation Correction and SPECT/CT Hybrid Imaging

Evaluation of delineation of image details in semiconductor PET utilizing the normalized mutual information technique

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