Sensitometric response of Cd1-xZnxTe detectors for chest radiography

The sensitometric response of Cd/sub 1-x/Zn/sub x/Te semiconductor detectors using a geometrical chest phantom, within the X-ray diagnostic energy range, has been studied with the aim of optimizing the image quality parameters of these solid state-ionization devices. In addition, the dependence of the spatial resolution of a planar Cd/sub 1-x/Zn/sub x/Te substrate on the phantom thickness has been experimentally determined. The results of this study indicate that Cd/sub 1-x/Zn/sub x/Te detectors exhibit a high signal-to-noise ratio (S/N).

[1]  Cornelis H. Slump,et al.  Image quality characteristics of a novel x-ray detector with multiple screen: CCD sensors for real-time diagnostic imaging , 1997, Medical Imaging.

[2]  George C. Giakos,et al.  Engineering aspects of a kinestatic charge detector. , 1995 .

[3]  John H. Reed,et al.  Application of monolithic CdZnTe linear solid state ionization detectors for x-ray imaging , 1993, Optics & Photonics.

[4]  A Fenster,et al.  A spatial-frequency dependent quantum accounting diagram and detective quantum efficiency model of signal and noise propagation in cascaded imaging systems. , 1994, Medical physics.

[5]  George C. Giakos,et al.  Novel multimedia detectors for medical imaging , 1996, Medical Imaging.

[6]  Applications of CdTe detectors in x-ray imaging and metrology , 1993, Optics & Photonics.

[7]  Tetsuro Ohtsuchi,et al.  Fabrication and Characteristics of a Submillimeter Detector Element Formed on a CdTe Single-Crystal Wafer as a Multichannel Detector Array Applicable to Diagnostic Imaging with Energy Information , 1993 .

[8]  John A. Rowlands,et al.  Digital radiology using self-scanned readout of amorphous selenium: design considerations for mammography , 1995, Medical Imaging.

[9]  F A DiBianca,et al.  Kinestatic charge detection. , 1985, Medical physics.

[10]  Tetsuro Ohtsuchi,et al.  CdTe semiconductor X-ray imaging sensor and energy subtraction method using X-ray energy information , 1993 .

[11]  G. Giakos,et al.  Sensitometric response of CdZnTe detectors for digital radiography , 1997, IEEE Instrumentation and Measurement Technology Conference Sensing, Processing, Networking. IMTC Proceedings.

[12]  G. Giakos,et al.  Collection efficiency of CdZnTe detectors , 1997, IEEE Instrumentation and Measurement Technology Conference Sensing, Processing, Networking. IMTC Proceedings.

[13]  Benjamin M. W. Tsui,et al.  Principles of Medical Imaging , 1992 .

[14]  A Fenster,et al.  Efficiency and resolution of ionography in diagnostic radiology. , 1974, Medical physics.

[15]  A R Cowen,et al.  Physical evaluation of computed radiography as a mammographic X-ray imaging system. , 1994, The British journal of radiology.

[16]  William V. Schempp,et al.  Signal, noise, and detective quantum efficiency in CCD-based x-ray imaging systems for use in mammography , 1994, Medical Imaging.

[17]  Cornelis H. Slump,et al.  A novel X-ray detector with multiple screen-CCD sensors for real-time diagnostic imaging. Physics of Medical Imaging , 1996 .

[18]  G. Entine,et al.  High contrast, CdTe portal scanner for radiation therapy , 1991, Conference Record of the 1991 IEEE Nuclear Science Symposium and Medical Imaging Conference.

[19]  John H. Reed,et al.  High-dynamic-range x-ray imager employing CdZnTe detector arrays , 1993, Optics & Photonics.

[20]  J. F. Butler,et al.  Recent developments in CdZnTe gamma-ray detector technology , 1992, Optics & Photonics.

[21]  Satoshi Tokuda,et al.  Development of multichannel CdTe radiation detectors , 1995 .

[22]  Performance characteristics of a dual-energy detector for digital scan projection radiography. , 1987, Medical physics.

[23]  J A Rowlands,et al.  X-ray imaging using amorphous selenium: inherent spatial resolution. , 1995, Medical physics.

[24]  J. Coltman.  The Specification of Imaging Properties by Response to a Sine Wave Input , 1954 .

[25]  R. D. Nelson,et al.  Large area image plane sensors for radiography , 1994 .

[26]  M. Cuzin,et al.  Preliminary characterizations of a new hybrid CdTe structure for x-ray dental imaging , 1995, Medical Imaging.

[27]  F. P. Doty,et al.  Cd/sub 1-x/Zn/sub x/Te gamma ray detectors , 1992 .

[28]  G. Entine,et al.  Recent results with a CdTe imaging portal scanner for radiation therapy , 1992 .

[29]  J Yorkston,et al.  A real-time, flat-panel, amorphous silicon, digital x-ray imager. , 1995, Radiographics : a review publication of the Radiological Society of North America, Inc.

[30]  Cornelis H. Slump,et al.  Novel x-ray detector with multiple-screen-CCD sensors for real-time diagnostic imaging , 1996, Medical Imaging.

[31]  S. Adachi,et al.  A CMOS detector readout front-end for X-ray digital radiography systems , 1996 .